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// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/*
* KUnit tests for the iwlwifi device info table
*
* Copyright (C) 2023-2025 Intel Corporation
*/
#include <kunit/test.h>
#include <linux/pci.h>
#include "iwl-drv.h"
#include "iwl-config.h"
MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");
static void iwl_pci_print_dev_info(const char *pfx, const struct iwl_dev_info *di)
{
printk(KERN_DEBUG "%sdev=%.4x,subdev=%.4x,mac_type=%.4x,mac_step=%.4x,rf_type=%.4x,cdb=%d,jacket=%d,rf_id=%.2x,bw_limit=%d,cores=%.2x\n",
pfx, di->device, di->subdevice, di->mac_type, di->mac_step,
di->rf_type, di->cdb, di->jacket, di->rf_id, di->bw_limit,
di->cores);
}
static void devinfo_table_order(struct kunit *test)
{
int idx;
for (idx = 0; idx < iwl_dev_info_table_size; idx++) {
const struct iwl_dev_info *di = &iwl_dev_info_table[idx];
const struct iwl_dev_info *ret;
ret = iwl_pci_find_dev_info(di->device, di->subdevice,
di->mac_type, di->mac_step,
di->rf_type, di->cdb,
di->jacket, di->rf_id,
di->bw_limit,
di->cores, di->rf_step);
if (!ret) {
iwl_pci_print_dev_info("No entry found for: ", di);
KUNIT_FAIL(test,
"No entry found for entry at index %d\n", idx);
} else if (ret != di) {
iwl_pci_print_dev_info("searched: ", di);
iwl_pci_print_dev_info("found: ", ret);
KUNIT_FAIL(test,
"unusable entry at index %d (found index %d instead)\n",
idx, (int)(ret - iwl_dev_info_table));
}
}
}
static void devinfo_names(struct kunit *test)
{
int idx;
for (idx = 0; idx < iwl_dev_info_table_size; idx++) {
const struct iwl_dev_info *di = &iwl_dev_info_table[idx];
KUNIT_ASSERT_TRUE(test, di->name);
}
}
static void devinfo_no_cfg_dups(struct kunit *test)
{
/* allocate iwl_dev_info_table_size as upper bound */
const struct iwl_cfg **cfgs = kunit_kcalloc(test,
iwl_dev_info_table_size,
sizeof(*cfgs), GFP_KERNEL);
int p = 0;
KUNIT_ASSERT_NOT_NULL(test, cfgs);
/* build a list of unique (by pointer) configs first */
for (int i = 0; i < iwl_dev_info_table_size; i++) {
bool found = false;
for (int j = 0; j < p; j++) {
if (cfgs[j] == iwl_dev_info_table[i].cfg) {
found = true;
break;
}
}
if (!found) {
cfgs[p] = iwl_dev_info_table[i].cfg;
p++;
}
}
/* check that they're really all different */
for (int i = 0; i < p; i++) {
struct iwl_cfg cfg_i = *cfgs[i];
for (int j = 0; j < i; j++) {
struct iwl_cfg cfg_j = *cfgs[j];
KUNIT_EXPECT_NE_MSG(test, memcmp(&cfg_i, &cfg_j,
sizeof(cfg_i)), 0,
"identical configs: %ps and %ps\n",
cfgs[i], cfgs[j]);
}
}
}
static void devinfo_check_subdev_match(struct kunit *test)
{
for (int i = 0; i < iwl_dev_info_table_size; i++) {
const struct iwl_dev_info *di = &iwl_dev_info_table[i];
/* if BW limit bit is matched then must have a limit */
if (di->bw_limit == 1)
KUNIT_EXPECT_NE(test, di->cfg->bw_limit, 0);
if (di->subdevice == (u16)IWL_CFG_ANY)
continue;
KUNIT_EXPECT_EQ(test, di->rf_id, (u8)IWL_CFG_ANY);
KUNIT_EXPECT_EQ(test, di->bw_limit, (u8)IWL_CFG_ANY);
KUNIT_EXPECT_EQ(test, di->cores, (u8)IWL_CFG_ANY);
}
}
static void devinfo_check_killer_subdev(struct kunit *test)
{
for (int i = 0; i < iwl_dev_info_table_size; i++) {
const struct iwl_dev_info *di = &iwl_dev_info_table[i];
if (!strstr(di->name, "Killer"))
continue;
KUNIT_EXPECT_NE(test, di->subdevice, (u16)IWL_CFG_ANY);
}
}
static void devinfo_pci_ids(struct kunit *test)
{
struct pci_dev *dev;
dev = kunit_kmalloc(test, sizeof(*dev), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, dev);
for (int i = 0; iwl_hw_card_ids[i].vendor; i++) {
const struct pci_device_id *s, *t;
s = &iwl_hw_card_ids[i];
dev->vendor = s->vendor;
dev->device = s->device;
dev->subsystem_vendor = s->subvendor;
dev->subsystem_device = s->subdevice;
dev->class = s->class;
t = pci_match_id(iwl_hw_card_ids, dev);
KUNIT_EXPECT_PTR_EQ(test, t, s);
}
}
static void devinfo_no_trans_cfg_dups(struct kunit *test)
{
/* allocate iwl_dev_info_table_size as upper bound */
const struct iwl_cfg_trans_params **cfgs;
int count = 0;
int p = 0;
for (int i = 0; iwl_hw_card_ids[i].vendor; i++)
count++;
cfgs = kunit_kcalloc(test, count, sizeof(*cfgs), GFP_KERNEL);
KUNIT_ASSERT_NOT_NULL(test, cfgs);
/* build a list of unique (by pointer) configs first */
for (int i = 0; iwl_hw_card_ids[i].vendor; i++) {
struct iwl_cfg_trans_params *cfg;
bool found = false;
cfg = (void *)iwl_hw_card_ids[i].driver_data;
for (int j = 0; j < p; j++) {
if (cfgs[j] == cfg) {
found = true;
break;
}
}
if (!found) {
cfgs[p] = cfg;
p++;
}
}
/* check that they're really all different */
for (int i = 0; i < p; i++) {
for (int j = 0; j < i; j++) {
KUNIT_EXPECT_NE_MSG(test, memcmp(cfgs[i], cfgs[j],
sizeof(*cfgs[i])), 0,
"identical configs: %ps and %ps\n",
cfgs[i], cfgs[j]);
}
}
}
static struct kunit_case devinfo_test_cases[] = {
KUNIT_CASE(devinfo_table_order),
KUNIT_CASE(devinfo_names),
KUNIT_CASE(devinfo_no_cfg_dups),
KUNIT_CASE(devinfo_check_subdev_match),
KUNIT_CASE(devinfo_check_killer_subdev),
KUNIT_CASE(devinfo_pci_ids),
KUNIT_CASE(devinfo_no_trans_cfg_dups),
{}
};
static struct kunit_suite iwlwifi_devinfo = {
.name = "iwlwifi-devinfo",
.test_cases = devinfo_test_cases,
};
kunit_test_suite(iwlwifi_devinfo);
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