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drm/xe/tests: Add migration packet test

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One of our migration data packet (descriptor) is based on the KLV
encoding. Add a simple descriptor initialization test, as we plan
to use new KLV helper functions there.

Signed-off-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patch.msgid.link/20260708180921.2715-1-michal.wajdeczko@intel.com
This commit is contained in:
Michal Wajdeczko 2026-07-08 20:09:21 +02:00
parent af98b8f067
commit 6d599b33d8
2 changed files with 93 additions and 0 deletions
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89
drivers/gpu/drm/xe/tests/xe_sriov_packet_kunit.c Normal file
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@ -0,0 +1,89 @@
// SPDX-License-Identifier: GPL-2.0 AND MIT
/*
* Copyright © 2026 Intel Corporation
*/
#include <kunit/test.h>
#include <kunit/test-bug.h>
#include "xe_device.h"
#include "xe_guc_klv_helpers.h"
#include "xe_kunit_helpers.h"
#include "xe_pci_test.h"
#define TEST_VF VFID(1)
static int sriov_packet_test_init(struct kunit *test)
{
struct xe_pci_fake_data fake = {
.sriov_mode = XE_SRIOV_MODE_PF,
.platform = XE_PANTHERLAKE, /* we need MEMIRQ */
.subplatform = XE_SUBPLATFORM_NONE,
.graphics_verx100 = 3000,
.media_verx100 = 3000,
};
struct xe_device *xe;
test->priv = &fake;
xe_kunit_helper_xe_device_test_init(test);
xe = test->priv;
/* pretend we can support at least VF1 */
xe->sriov.pf.device_total_vfs = 1;
xe->sriov.pf.driver_max_vfs = 1;
KUNIT_ASSERT_EQ(test, 0, xe_sriov_init(xe));
KUNIT_ASSERT_TRUE(test, xe_sriov_pf_migration_supported(xe));
return 0;
}
static void test_descriptor_init(struct kunit *test)
{
struct xe_device *xe = test->priv;
struct xe_sriov_packet **desc;
/* note: with lock held we should avoid KUNIT_ASSERT() */
guard(mutex)(pf_migration_mutex(xe, TEST_VF));
KUNIT_EXPECT_EQ(test, 0, pf_descriptor_init(xe, TEST_VF));
desc = pf_pick_descriptor(xe, TEST_VF);
KUNIT_EXPECT_NOT_ERR_OR_NULL(test, *desc);
if (!*desc)
return;
KUNIT_EXPECT_NE(test, (*desc)->hdr.version, 0);
KUNIT_EXPECT_EQ(test, (*desc)->hdr.version, XE_SRIOV_PACKET_SUPPORTED_VERSION);
KUNIT_EXPECT_EQ(test, (*desc)->hdr.type, XE_SRIOV_PACKET_TYPE_DESCRIPTOR);
KUNIT_EXPECT_NE(test, (*desc)->hdr.size, 0);
KUNIT_EXPECT_NOT_ERR_OR_NULL(test, (*desc)->vaddr);
if (!(*desc)->vaddr)
return;
KUNIT_EXPECT_EQ(test, 0, xe_sriov_packet_process_descriptor(xe, TEST_VF, *desc));
switch ((*desc)->hdr.version) {
case 1:
/* v1 is KLV based */
KUNIT_EXPECT_TRUE(test, IS_ALIGNED((*desc)->hdr.size, sizeof(u32)));
/* v1 has at least DEVID and REVID KLVs */
KUNIT_EXPECT_LE(test, 2,
xe_guc_klv_count((*desc)->vaddr,
(*desc)->hdr.size / sizeof(u32)));
break;
default:
kunit_mark_skipped(test, "no test code for version %u\n", (*desc)->hdr.version);
return;
}
}
static struct kunit_case sriov_packet_test_cases[] = {
KUNIT_CASE(test_descriptor_init),
{}
};
static struct kunit_suite sriov_packet_suite = {
.name = "sriov_packet",
.test_cases = sriov_packet_test_cases,
.init = sriov_packet_test_init,
};
kunit_test_suite(sriov_packet_suite);

4
drivers/gpu/drm/xe/xe_sriov_packet.c
View File

@ -516,3 +516,7 @@ int xe_sriov_packet_save_init(struct xe_device *xe, unsigned int vfid)
return 0;
}
#if IS_BUILTIN(CONFIG_DRM_XE_KUNIT_TEST)
#include "tests/xe_sriov_packet_kunit.c"
#endif