[igt-dev] [PATCH i-g-t 0/2] Test modeseting with imported prime buffer between any two devices

[Arkadiusz Hiler]

By default the first two devices that are matching provided chipset requirements
are used (ANY + VGEM). This is sensitive to enumeration order, but as long as
there are only two devices it's fine - PRIME will get tested both directions.

# kms_prime
IGT-Version: 1.25-g0b58fd8c (x86_64) (Linux: 5.7.0-rc2-CI-CI_DRM_8370+ x86_64)
Starting subtest: basic-crc
Starting dynamic subtest: first-to-second
Test requirement not met in function igt_require_pipe_crc, file ../lib/igt_debugfs.c:522:
Test requirement: fstatat(dir, "crtc-0/crc/control", &stat, 0) == 0
CRCs not supported on this platform
Last errno: 2, No such file or directory
Dynamic subtest first-to-second: SKIP (0,000s)
Starting dynamic subtest: second-to-first
Dynamic subtest second-to-first: SUCCESS (1,779s)
Subtest basic-crc: SUCCESS (2,024s)

In case there are more than two devices you can specify which ones should be
used or force ordering, e.g.:

# lsgpu
sys:/sys/devices/pci0000:00/0000:00:02.0
    subsystem       : pci
    drm card        : /dev/dri/card0
    drm render      : /dev/dri/renderD128
    vendor          : 8086
    device          : 9A49

sys:/sys/devices/platform/vgem
    subsystem       : platform
    drm card        : /dev/dri/card1
    drm render      : /dev/dri/renderD129

# kms_prime --device "sys:/sys/devices/platform/vgem;pci:vendor=Intel"
IGT-Version: 1.25-g0b58fd8c (x86_64) (Linux: 5.7.0-rc2-CI-CI_DRM_8370+ x86_64)
Starting subtest: basic-crc
Looking for devices to open using filter 0: sys:/sys/devices/platform/vgem
Filter matched /dev/dri/card1 | /dev/dri/renderD129
Looking for devices to open using filter 1: pci:vendor=Intel
Filter matched /dev/dri/card0 | /dev/dri/renderD128
Starting dynamic subtest: first-to-second
Dynamic subtest first-to-second: SUCCESS (1,978s)
Starting dynamic subtest: second-to-first
Test requirement not met in function igt_require_pipe_crc, file ../lib/igt_debugfs.c:522:
Test requirement: fstatat(dir, "crtc-0/crc/control", &stat, 0) == 0
CRCs not supported on this platform
Last errno: 2, No such file or directory
Dynamic subtest second-to-first: SKIP (0,000s)
Subtest basic-crc: SUCCESS (2,944s)

You can also use the IGT_DEVICE environment variable or Common::Device in .igtrc.

Arkadiusz Hiler (2):
  lib: Support multiple filters
  lib/drmtest: Introduce __drm_open_driver_another

 lib/drmtest.c          | 165 +++++++++++++++++++++++++++++++++++------
 lib/drmtest.h          |   1 +
 lib/igt_core.c         |  16 ++--
 lib/igt_device_scan.c  |  87 ++++++++++++++++------
 lib/igt_device_scan.h  |   8 +-
 tests/core_hotunplug.c |   3 +-
 tests/kms_prime.c      | 107 ++++++++++++++++----------
 7 files changed, 288 insertions(+), 99 deletions(-)

-- 
2.25.2