Commit Graph

112 Commits

Author SHA1 Message Date
Harald Welte
ad117091ca usb_buf: Actually limit queue to 3 elements, not 4
In Change-ID Ie15183f16b22193ffdaf01845db2eae4c7f43c17 we wanted
to limit the number of queue elements to 3, but actually implemented 4.

Change-Id: Ic5fb164f2dfd1c293c51bee8184fc34552267a54
2019-12-15 17:25:13 +01:00
Harald Welte
56be0bf317 cardem: Fix memory leak on unsupported SIMTRACE_MSGT_DT_CEMU_CARDINSERT
Some boards like QMOD cannot simulate a virtual card insert signal
towards the modem (as the mPCIe connector doesn't have that signal).

In these situations, we were aborting processing of the related OUT
endpoint command and forgot to release the related memory.

Change-Id: I489097b7e332004e0f2beca0b22fa36d5d1d31b5
Related: OS#4251
2019-12-14 23:26:02 +01:00
Harald Welte
63c9e1f402 implement minimalistic talloc_report(); add 't' command on UART
This helps when debugging the firmware, as it shows the current
utliization of the 10-msgb-talloc pool.

Change-Id: Ib10c4396cd4c9c4a6257cf45886e367214787927
Related: OS#4251
2019-12-14 23:07:04 +01:00
Harald Welte
a14616c096 usb_buf: Limit the maximum queue length to 3 elements
If there are already three elements in the to-be-transmitted queue
for the EP, let's free the first element of the queue.  This is a
clear indication that the USB host is not polling the endpoint
regularly.  Maybe there's no host application running at all?

This should obsolete Change-Id Ie9ebdd2ff966f67c9afd1ed760f106558f0091ad

Change-Id: Ie15183f16b22193ffdaf01845db2eae4c7f43c17
Closes: OS#4251
2019-12-14 21:51:05 +01:00
Harald Welte
f4a625be53 usb_buf: count number of elements in queue
This is in preparation for limiting the maximum queue length

Change-Id: I7cb184d7a1ccb519010a2f3e3295cc3a5fbf8052
Related: OS#4251
2019-12-14 21:50:59 +01:00
Harald Welte
271be9d181 more comments in host_communication.c.
Change-Id: I8b0124ec96b56b7c89e4c7033a11cc93c4fa2d26
2019-12-14 21:13:37 +01:00
Harald Welte
342a7fe039 Add missing CR to achieve CRLF at end of log lines
Change-Id: Ic4afb2981f68811fddb272e64dbddd3397a12642
2019-12-14 17:26:21 +00:00
Harald Welte
3c003cc2fa Fix format string related warnings (int vs. long)
Change-Id: I924a16f03e2a099b9f8eb56746bff2b9101c6802
2019-12-14 11:47:06 +01:00
Harald Welte
37055b9286 stdio: Add support for %p format string (pointer address)
We actually llready had plrenty of code using %p, despite our stdio
not implementing it ;)

Change-Id: Iecf6c849ce5ef72a8fed9b19a18e215c61c3d09f
2019-12-14 11:47:06 +01:00
Kévin Redon
503e184157 cardem: use simplest ATR as default ATR
This is the shortest and simplest ATR possible according to the
ISO 7816-3 spec.

It does not offer any non-default parameters (F, D, WI, ...)

Change-Id: I4ff41b5120bcadca652296f9d3691f7606be2bd2
2019-12-02 19:38:45 +01:00
Kévin Redon
1cfc25e8c1 minor : fix typo in comment
Change-Id: Ie310143fe713a51fa1adf8bf7599374282341f2e
2019-12-02 19:28:07 +01:00
Kévin Redon
3864a794b4 minor: improve debug output
Change-Id: Ibfc22b95c0be3ac78bd50a40e31cc7d8546d81d9
2019-12-02 19:28:00 +01:00
Kévin Redon
b7f94dcb9f qmod: lower VCC threshold to 2.5V
on the QMOD board the VCC signal from the modem is measured using
an ADC (SIMtrace board just use card detect).
the threshold to consider VCC as activated was set to 2.8V, which
gives a bit of margin for the expected 3.0V.
still, we had one board where the voltage was 2.8V.
to be resilient against lower than expected voltages from
modems (or boards), we lowered the threshold to 2.5V.
this is still save for the SAM3S to correctly identify high/low
levels.

Change-Id: Iac2778903690045e4e63fef29f812205d00c28ed
2019-11-26 13:49:53 +01:00
Kévin Redon
c90de6983c free USB buffer when allocation failed
when the reader sends APDU headers (e.g. after multiple reset),
messages are queued for USB transmission.
but if no host software is connected to SIMtrace in card emulation
mode, the USB message queue is not emptied, leading to the memory
getting full and preventing allocation for newer messages (e.g.
more recent APDU).
in this case the oldest queued message is now dropped to free some
memory.

Change-Id: Ie9ebdd2ff966f67c9afd1ed760f106558f0091ad
2019-11-26 09:57:28 +00:00
Kévin Redon
ac7e73a579 check RST/VCC/CLK line at every step of the activation
ISO-7816 specifies a card activation sequence: VCC on, CLK active, then RST
release.
we now check for the end state at every state of the activation in case the
reader does not strictly follows the sequence.

change has been tested on OWHW slot 1.

Change-Id: Ie55505ab3a70cbd64281af40af53d5e120313228
2019-11-14 20:11:48 +01:00
Kévin Redon
7233cf803a initialize VCC, RST, and VCC with actual values
previously the card RST, VCC, and CLK signal states have been initialized with
default values corresponding to an inactive reader.
this worked fine for actual inactive readers since the default values match
and would be updated when the signal changes (edge detection).
but if the reader is in another state, card activation detection could fail.
this is fixed since the actual signal values are now used during initialisation.

at the same time I changed the variable type from uint8_t to boolean since they
have only two possible states, and understanding the actual state when coding
is simpler (no need to check which integer corresponds to which state).

this change has been successfully tested on the 2 slots of OWHW board.

Change-Id: Ie9245d75d48ae93d16f97897d4fa5ad6cd402e73
2019-11-14 19:54:17 +01:00
Kévin Redon
ede87e067d USB: place version string in interface
previously the version string was in the iConfiguration field of a
dedicated USB configuration.
this configuration had no interface, but the USB specification
requires at least one interface.
an interface has been added to this configuration.
the version string is now in the iInterface field, and the
iConfiguration field contains "firmware version".
the USB specification does not require an end-point, and none are
present.

Change-Id: I99361e313979711f4f45ad424a52faa3ddd7c558
2019-08-13 17:03:23 +02:00
Harald Welte
4b487b836a Fix builds on Ubuntu 16.04
The most recent commits introduced 'C99' syntax by declaring variables
inside the 'for' statement itself, rather than before.

This resulted in compile failures in the Ubuntu 16.04 builds on
build.opensuse.org:

[  105s] libcommon/source/usb.c: In function 'SIMtrace_USB_Initialize':
[  105s] libcommon/source/usb.c:679:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
[  105s]   for (uint8_t i = 0; i < ARRAY_SIZE(device_id_string) - 1; i++) {
[  105s]   ^
[  105s] libcommon/source/usb.c:679:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
[  105s] libcommon/source/usb.c:686:15: error: redefinition of 'i'
[  105s]   for (uint8_t i = 0; i < ARRAY_SIZE(git_version) - 1; i++) {
[  105s]                ^
[  105s] libcommon/source/usb.c:679:15: note: previous definition of 'i' was here
[  105s]   for (uint8_t i = 0; i < ARRAY_SIZE(device_id_string) - 1; i++) {
[  105s]                ^
[  105s] libcommon/source/usb.c:686:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
[  105s]   for (uint8_t i = 0; i < ARRAY_SIZE(git_version) - 1; i++) {
[  105s]   ^
[  105s] libcommon/source/usb.c:692:15: error: redefinition of 'i'
[  105s]   for (uint8_t i = 0; i < ARRAY_SIZE(usb_strings) && i < ARRAY_SIZE(usb_strings_extended); i++) {
[  105s]                ^
[  105s] libcommon/source/usb.c:686:15: note: previous definition of 'i' was here
[  105s]   for (uint8_t i = 0; i < ARRAY_SIZE(git_version) - 1; i++) {
[  105s]                ^
[  105s] libcommon/source/usb.c:692:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
[  105s]   for (uint8_t i = 0; i < ARRAY_SIZE(usb_strings) && i < ARRAY_SIZE(usb_strings_extended); i++) {
[  105s]   ^
[  105s] Makefile:227: recipe for target 'obj/simtrace/flash_usb.o' faile

Change-Id: Ibdb837ac105664484b10873c2c0d9561051b1c2a
2019-08-08 10:18:35 +02:00
Kévin Redon
e0265462d8 add serial and version information in USB descriptor
the device ID (unique to the micro-controller) is now displayed in
the USB iSerial descriptor.
the git version is now also displayed in iConfiguration in an
additional (empty) configuration descriptor.
this allows the user to quickly get the device hardware serial and
firmware version just by using lsusb (no need for a custom USB
software).

Change-Id: If9fadecc097ca3e006990160936bf11b22eae4e0
2019-08-06 16:24:58 +00:00
Kévin Redon
2fdcf3b38d cardem: add more debug information for TPDU state
this just adds the name of the TPDU state on top of the state number.

the ISO state is cleaned up accordingly

Change-Id: Id5104a2c3579dedb092c179748e9ed525673841c
2018-10-25 10:42:33 +02:00
Kévin Redon
c171112994 stdio: fix detection of malformated format strings
the error code returned by vsnprintf was ignored,
resulting in printing the string from a previous print.

Change-Id: I8506b05d56da55d1357a1234917adf341b46e1db
2018-09-03 21:10:58 +02:00
Kévin Redon
29200c6223 stdio: add void 'l' format string qualifier
Wformat requires uint32_t to be used in format string with the 'l'
qualifier (l = long = at least 32 bits).
this qualifier was not handled before.
since on ARM 32-bit int == long we can simply ignore it (stdio
already does not support 64-bit data).

Change-Id: Ib506a66f68712c6b3eeb5129a39abf47ec86a2a7
2018-08-28 19:43:37 +02:00
Harald Welte
c394109964 firmware: Enable -Wformat and resolve all related compiler warnings
There have been tons of format-string related bugs in our code which
we never discovered due to disabling -Wformat.  Let's fix that.

Change-Id: I5ec466361bcc526fac1f4897673264ee5af3458b
2018-08-26 10:20:05 +02:00
Kévin Redon
ff3d84922d USB: increase USB reset time
USB reset can be signaled by pulling low USB D+ for at least 10 ms,
according to the USB specification. This force a re-enumeration.
This time is increased to 20 ms to work with more USB HUBs.

Some SAM3S based board have external D+ pull-up mechanism (such as
SIMtrace) which needs to be used to pull D+ low.
This is a legacy mechanism from SAM7S history.
This mechanism is not required anymore on the SAM3S, and the qmod
does not use it. When the USB HAL is suspended, the transceiver is
disabled, causing D+ and D- to be pulled low. Then the HAL is activated
again. This is particularly required when DFU is started (and
enumerated), and after flashing the SAM3S switched to the main
application (without reset), so it can properly re-enumerate.

This board difference is now defined on the board header.

Change-Id: I9b58d8101c2fcf5595026b675728826af26127a3
2018-08-07 12:09:49 +02:00
Kévin Redon
910e6830b9 cardem (minor): trace tx data send over USB
Change-Id: I69cef43dd5a78e9f82cc045cdb90c326b03d1f68
2018-08-04 11:16:15 +02:00
Kévin Redon
8a4fba5ea2 cardem: add state name in trace
this helps reading the output while debugging quite a lot

Change-Id: Idf301e09cf14e2412e29dcb252563bc6e4e5c630
2018-08-04 11:16:15 +02:00
Kévin Redon
1b39fd31ee cardem (minor): remove to verbose log trace
Change-Id: Ie43a33af3728c0700f71527ca75d909a9ebd2529
2018-08-04 11:16:15 +02:00
Kévin Redon
0f4abf5eaa cardem: minor typo fix in comment
Change-Id: Ib1dee95e15db1c6bb3b45920d7c1a567e2ba474b
2018-08-04 11:16:15 +02:00
Kévin Redon
1836ac0761 add synchronous UART transmission and use it in exceptions
The default ISR (particularly the HardFault handler) print information,
but this information was not displayed on the console because the UART
IRQ is lower than some default blocking IRQ.
Allowing to set synchronous transfer corrects this.

The underlying Atmel exception library had to be modified to use the
synchronous output.

Making UART_PutChar always synchronous when called from an ISR is not
desired because we use TRACE_ macros is some ISR. The synchronous
output must be set explicitly.

Change-Id: I1b4ace5185cf2dc32684934ed12bf6a8682e9bad
2018-08-04 11:16:13 +02:00
Kévin Redon
dd36d9b010 sniff: send incomplete TPDU when reset is asserted
Change-Id: I8d7e4d604cded535e40d27c2be872268e0f24c20
2018-08-01 10:35:55 +02:00
Kévin Redon
8b8e58b00e cardem: use TC2 as WI and update WT after ATR
Change-Id: I3e51b16d557bc664f87563e1a3dce6642de474d2
2018-07-30 18:19:11 +02:00
Kévin Redon
ebe672e926 cardem: use TC_ETU to trigger ATR sending
this changes how ATR is handled.
the ATR is also printed when set (as important debug information).
the test is also updated to correspond to the new mechanism (
simulating the timeout before sending the ATR)

Change-Id: I69df797e2feadffa9f5f977cb71b69386cee7cd0
2018-07-30 15:02:35 +02:00
Kévin Redon
2a44dc598d sniff: increase debug output
Change-Id: Ife0bbcf4a25aaa445a36768c00004e6e0d9a4947
2018-07-29 09:58:28 +02:00
Kévin Redon
ec396bf402 sniff: fix ATR checksum calculation
this issue also cause the sent ATR to be empty

Change-Id: I6edff7aeb3185c835656acde75886fb6c90c0582
2018-07-28 20:59:44 +02:00
Kévin Redon
697199676e sniff: ensure the checksum error flag is also printed
the firmware now also use a generic value_string array (as does the
host application)

Change-Id: I861bd8b52e8f2f2a4786bbe1cc834917119dc394
2018-07-28 20:59:41 +02:00
Kévin Redon
8e84f8125c sniff: rename reset hold/release to assert/deassert
this change is to match the nomenclature used in cardem

Change-Id: Ide99e731cad26aec949ad14d54f46fa611a0b7f8
2018-07-26 15:34:08 +02:00
Kévin Redon
b60538888f cardem: fix USB message parsing
the msg->l2h pointer was not set but used later on, e.g. in
dispatch_usb_command_cardem, case SIMTRACE_MSGT_DT_CEMU_SET_ATR):
>   case SIMTRACE_MSGT_DT_CEMU_SET_ATR:
>   >   atr = (struct cardemu_usb_msg_set_atr *) msg->l2h;
>   >   card_emu_set_atr(ci->ch, atr->atr, atr->atr_len);
l2h is by default 0, thus not pointing to the actual message l2h.
I wonder how cardem worked worked before with this issue though.

Change-Id: Ifbb53dbf478d8dade82251f769e78e1306e77434
2018-07-18 14:06:23 +02:00
Kévin Redon
680bdaba96 cardem: fix typo
Change-Id: Ibeeb01b21a3ccfa74642f13694a20054e920837e
2018-07-18 14:00:57 +02:00
Kévin Redon
f66af0c640 sniff: add checksum verification for ATR and PPS
a checksum error is only signaled in the USB message with the
corresponding flag.

Change-Id: I277868267c3199eea216ab47bdd09fb2fb944b06
2018-07-11 22:33:16 +02:00
Kévin Redon
5f6b8717a4 fix 'ISO_S_IN_ATR not handled' gcc warning
when building the cardem application GCC would output the following warning:
libcommon/source/card_emu.c: In function 'card_emu_process_rx_byte':
libcommon/source/card_emu.c:764:2: warning: enumeration value 'ISO_S_IN_ATR' not handled in switch [-Wswitch]
  switch (ch->state) {
  ^~~~~~

in card emulation the reader should not send data while the card is
sending its ATR.
this is true for other states already handled (RESET, ...). in
these cases an error message is output.
this behaviour is now the default case as data from the reader is
only expected in 3 cases: ISO_S_WAIT_TPDU, ISO_S_IN_TPDU, and
ISO_S_IN_PTS.

Change-Id: Ifbc8dbe1c9f176343304f211c7e6068fb977961e
2018-07-11 22:24:46 +02:00
Kévin Redon
ac0843af83 make adc2uv common
when building the trace app for the simtrace board gcc was outputing
the following error:
libboard/common/source/boardver_adc.c:20:17: warning: 'adc2uv' defined but not used [-Wunused-function]
 static uint32_t adc2uv(uint16_t adc)

adc2uv is used by qmod, and defined in two places:
in boardver_adc.c and mode_cardemu.c.

this change will have adc2uv only defined in boardver_adc.c and make
available in the header to be used by mode_cardemu.c.

Change-Id: I8a772638fa8dd02d8bc8b7631de5af5a22647c55
2018-07-11 22:24:46 +02:00
Kévin Redon
f000831d72 sniffer: fix inverted reset meaning
Change-Id: I860e2e29c059e1e0ec126695bb68d489891a17da
2018-07-11 22:01:58 +02:00
Kévin Redon
b37bda0b55 sniffer: only allocate USB message if queue is not too long
When the host does not retrieved the USB messages, they keep getting
queue in the firmware, filling the RAM, and preventing further memory
to be allocated.

Change-Id: I0e447acdf757dcb5dc5c4d8b84a4235866914cad
2018-07-11 22:01:58 +02:00
Kévin Redon
c6b968067d sniffer: also send malformed message over USB
Change-Id: I124c8db1d2f836e185630bbe8b5e52eb085d702a
2018-07-11 22:01:58 +02:00
Kévin Redon
a95bb1e85d minor: fix linker warning
linker warning:
obj/simtrace/dfu_sniffer.o: In function `usb_send_data':
/media/data/work/simtrace2/simtrace2/firmware/libcommon/source/sniffer.c:338: warning: undefined reference to `putchar'

Change-Id: I934f3fcb474d4046e921511a024c3a0b8533c782
2018-07-11 22:01:58 +02:00
Kévin Redon
da5578bd85 sniffer: set LED pattern
The red and green LEDs are now used as follows:
- red on = power (firmware is running)
- red blink = error detected (e.g. during ISO-7816 parsing)
- green on = running (sniffer mode is running)
- green blink = activity (e.g. USB message sent)

Change-Id: Ib1b6ff87fb92d6ed3ecae4bc89386206aaab508e
2018-07-11 22:01:58 +02:00
Kévin Redon
a2fccba96c sniffer: move reset handling from ISR to main loop
Change-Id: Ia88fb4baf49017524bb201123da3511e5342ba48
2018-07-11 22:01:58 +02:00
Kévin Redon
411428eb5e sniffer: move data print before USB send
when the host software does not retrieve the USB messages the memory
is filled and no new USB messages can be allocated, preventing the
following code to print the message

Change-Id: Ie8946894a84cb853b45555f7abb1ca6f32111425
2018-07-11 22:01:58 +02:00
Kévin Redon
f82f0f6eff USB: add flags for sniff data and centralise transfer
Also fix issue in usb_msg_alloc_hdr and add cosmetic spaces around
operations.

Change-Id: I768a0ad639aa5e648a630af72d01f7b68082b6b6
2018-07-11 22:01:58 +02:00
Kévin Redon
55f0612c8e cosmetic: put spaces around operations
Change-Id: If5ba5f8d16680e8403944274336ea595017063db
2018-07-11 22:01:58 +02:00