[PATCH v5 00/16] firmware: scmi: add SCMI base protocol support

[Tom Rini]

On Tue, Sep 26, 2023 at 03:57:34PM +0900, AKASHI Takahiro wrote:

> This patch series allows users to access SCMI base protocol provided by
> SCMI server (platform). It will also be utilized in separate patches
> in the future to add sanity/validity checks for other protocols.
> See SCMI specification document v3.2 beta[1] for more details about SCMI
> base protocol.
> 
> What is currently not implemented is
> - SCMI_BASE_NOTIFY_ERRORS command and notification callback mechanism
> 
> This feature won't be very useful in the current U-Boot environment.
> 
> [1] https://developer.arm.com/documentation/den0056/e/?lang=en
> 
> 
> Test
> ====
> The patch series was tested on the following platforms:
> * sandbox
> * qemu-arm64 with OPTEE as SCMI server

I have two problems.  The first is that for sandbox, this series is not
bisectable as a commits fail to build due to needing a definition in the
test before it's added:
/home/uboot/work/u-boot/u-boot/test/dm/scmi.c: In function 'dm_test_scmi_clocks':
/home/uboot/work/u-boot/u-boot/test/dm/scmi.c:117:21: warning: implicit declaration of function 'scmi_get_protocol' [-Wimplicit-function-declaration]
  117 |         clock_dev = scmi_get_protocol(agent_dev, SCMI_PROTOCOL_ID_CLOCK);
      |                     ^~~~~~~~~~~~~~~~~
/home/uboot/work/u-boot/u-boot/test/dm/scmi.c:117:50: error: 'SCMI_PROTOCOL_ID_CLOCK' undeclared (first use in this function)
  117 |         clock_dev = scmi_get_protocol(agent_dev, SCMI_PROTOCOL_ID_CLOCK);
      |                                                  ^~~~~~~~~~~~~~~~~~~~~~
/home/uboot/work/u-boot/u-boot/test/dm/scmi.c:117:50: note: each undeclared identifier is reported only once for each function it appears in
/home/uboot/work/u-boot/u-boot/test/dm/scmi.c: In function 'dm_test_scmi_resets':
/home/uboot/work/u-boot/u-boot/test/dm/scmi.c:182:50: error: 'SCMI_PROTOCOL_ID_RESET_DOMAIN' undeclared (first use in this function)
  182 |         reset_dev = scmi_get_protocol(agent_dev, SCMI_PROTOCOL_ID_RESET_DOMAIN);
      |                                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
make[4]: *** [/home/uboot/work/u-boot/u-boot/scripts/Makefile.build:256: test/dm/scmi.o] Error 1

Second, the series causes this failure:
========================================== FAILURES ===========================================
_______________________________ test_ut[ut_dm_dm_test_scmi_cmd] _______________________________
test/py/u_boot_spawn.py:195: in expect
    c = os.read(self.fd, 1024).decode(errors='replace')
E   OSError: [Errno 5] Input/output error

During handling of the above exception, another exception occurred:
test/py/tests/test_ut.py:497: in test_ut
    output = u_boot_console.run_command('ut ' + ut_subtest)
test/py/u_boot_console_base.py:266: in run_command
    m = self.p.expect([self.prompt_compiled] + self.bad_patterns)
test/py/u_boot_spawn.py:204: in expect
    raise ValueError('U-Boot exited with %s' % info)
E   ValueError: U-Boot exited with signal 11 (SIGSEGV)
------------------------------------ Captured stdout call -------------------------------------
=> ut dm dm_test_scmi_cmd
Test: dm_test_scmi_cmd: scmi.c
SCMI device: scmi
  protocol version: 0x20000
  # of agents: 2
      0: platform
    > 1: OSPM
  # of protocols: 3
      Clock management
      Reset domain management
      Voltage domain management
  vendor: U-Boot
  sub vendor: Sandbox
  impl version: 0x1
Denying access to device:0 failed (-13)
Denying access to protocol:0x14 on device:0 failed (-13)
Reset failed (-13)
Test: dm_test_scmi_cmd: scmi.c (flat tree)
SCMI device: ?n
=================================== short test summary info ===================================
FAILED test/py/tests/test_ut.py::test_ut[ut_dm_dm_test_scmi_cmd] - ValueError: U-Boot exited...

Which I believe CI will also produce, once the issue with htmldocs is
fixed.  I can't bisect it exactly as the failure shows up once the new
test is added.

-- 
Tom
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