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tests/pm_pc8: add pci-d3-state subtest

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Currently the test suite just looks at the files provided by the
runtime power management framework to check if the device is runtime
suspended. Add a test that reads the PCI config space to check if the
device is actually in PCI D3 state or not.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
This commit is contained in:
Paulo Zanoni 2014-02-25 17:46:27 -03:00
parent 31b20f7478
commit 37773d91d9
1 changed files with 31 additions and 0 deletions
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31
tests/pm_pc8.c
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@ -1406,6 +1406,35 @@ static void reg_read_ioctl_subtest(void)
igt_assert(wait_for_suspended()); igt_assert(wait_for_suspended());
} }
static bool device_in_pci_d3(void)
{
struct pci_device *pci_dev;
int rc;
uint16_t val;
pci_dev = intel_get_pci_device();
rc = pci_device_cfg_read_u16(pci_dev, &val, 0xd4);
igt_assert(rc == 0);
return (val & 0x3) == 0x3;
}
static void pci_d3_state_subtest(void)
{
igt_require(has_runtime_pm);
disable_all_screens(&ms_data);
igt_assert(wait_for_suspended());
igt_assert(device_in_pci_d3());
enable_one_screen(&ms_data);
igt_assert(wait_for_active());
igt_assert(!device_in_pci_d3());
}
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
int rounds = 50; int rounds = 50;
@ -1429,6 +1458,8 @@ int main(int argc, char *argv[])
basic_subtest(); basic_subtest();
igt_subtest("drm-resources-equal") igt_subtest("drm-resources-equal")
drm_resources_equal_subtest(); drm_resources_equal_subtest();
igt_subtest("pci-d3-state")
pci_d3_state_subtest();
/* Basic modeset */ /* Basic modeset */
igt_subtest("modeset-lpsp") igt_subtest("modeset-lpsp")