2021-11-07 14:09:16 +00:00
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// SPDX-License-Identifier: GPL-2.0
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#include <kunit/test.h>
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2021-11-07 14:09:17 +00:00
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#define MAX_PHYS_REGIONS 16
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#define INVALID_VALUE (~0ull)
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struct ne_phys_regions_test {
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u64 paddr;
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u64 size;
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int expect_rc;
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unsigned long expect_num;
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u64 expect_last_paddr;
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u64 expect_last_size;
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} phys_regions_test_cases[] = {
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/*
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* Add the region from 0x1000 to (0x1000 + 0x200000 - 1):
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* Expected result:
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* Failed, start address is not 2M-aligned
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*
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* Now the instance of struct ne_phys_contig_mem_regions is:
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* num = 0
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* regions = {}
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*/
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{0x1000, 0x200000, -EINVAL, 0, INVALID_VALUE, INVALID_VALUE},
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/*
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* Add the region from 0x200000 to (0x200000 + 0x1000 - 1):
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* Expected result:
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* Failed, size is not 2M-aligned
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*
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* Now the instance of struct ne_phys_contig_mem_regions is:
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* num = 0
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* regions = {}
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*/
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{0x200000, 0x1000, -EINVAL, 0, INVALID_VALUE, INVALID_VALUE},
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/*
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* Add the region from 0x200000 to (0x200000 + 0x200000 - 1):
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* Expected result:
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* Successful
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*
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* Now the instance of struct ne_phys_contig_mem_regions is:
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* num = 1
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* regions = {
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* {start=0x200000, end=0x3fffff}, // len=0x200000
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* }
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*/
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{0x200000, 0x200000, 0, 1, 0x200000, 0x200000},
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/*
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* Add the region from 0x0 to (0x0 + 0x200000 - 1):
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* Expected result:
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* Successful
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*
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* Now the instance of struct ne_phys_contig_mem_regions is:
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* num = 2
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* regions = {
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* {start=0x200000, end=0x3fffff}, // len=0x200000
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* {start=0x0, end=0x1fffff}, // len=0x200000
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* }
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*/
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{0x0, 0x200000, 0, 2, 0x0, 0x200000},
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/*
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* Add the region from 0x600000 to (0x600000 + 0x400000 - 1):
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* Expected result:
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* Successful
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*
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* Now the instance of struct ne_phys_contig_mem_regions is:
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* num = 3
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* regions = {
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* {start=0x200000, end=0x3fffff}, // len=0x200000
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* {start=0x0, end=0x1fffff}, // len=0x200000
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* {start=0x600000, end=0x9fffff}, // len=0x400000
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* }
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*/
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{0x600000, 0x400000, 0, 3, 0x600000, 0x400000},
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/*
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* Add the region from 0xa00000 to (0xa00000 + 0x400000 - 1):
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* Expected result:
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* Successful, merging case!
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*
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* Now the instance of struct ne_phys_contig_mem_regions is:
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* num = 3
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* regions = {
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* {start=0x200000, end=0x3fffff}, // len=0x200000
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* {start=0x0, end=0x1fffff}, // len=0x200000
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* {start=0x600000, end=0xdfffff}, // len=0x800000
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* }
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*/
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{0xa00000, 0x400000, 0, 3, 0x600000, 0x800000},
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/*
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* Add the region from 0x1000 to (0x1000 + 0x200000 - 1):
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* Expected result:
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* Failed, start address is not 2M-aligned
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*
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* Now the instance of struct ne_phys_contig_mem_regions is:
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* num = 3
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* regions = {
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* {start=0x200000, end=0x3fffff}, // len=0x200000
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* {start=0x0, end=0x1fffff}, // len=0x200000
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* {start=0x600000, end=0xdfffff}, // len=0x800000
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* }
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*/
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{0x1000, 0x200000, -EINVAL, 3, 0x600000, 0x800000},
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};
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static void ne_misc_dev_test_merge_phys_contig_memory_regions(struct kunit *test)
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{
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struct ne_phys_contig_mem_regions phys_contig_mem_regions = {};
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int rc = 0;
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int i = 0;
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phys_contig_mem_regions.regions = kunit_kcalloc(test, MAX_PHYS_REGIONS,
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sizeof(*phys_contig_mem_regions.regions),
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GFP_KERNEL);
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KUNIT_ASSERT_TRUE(test, phys_contig_mem_regions.regions);
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for (i = 0; i < ARRAY_SIZE(phys_regions_test_cases); i++) {
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struct ne_phys_regions_test *test_case = &phys_regions_test_cases[i];
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unsigned long num = 0;
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rc = ne_merge_phys_contig_memory_regions(&phys_contig_mem_regions,
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test_case->paddr, test_case->size);
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KUNIT_EXPECT_EQ(test, rc, test_case->expect_rc);
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KUNIT_EXPECT_EQ(test, phys_contig_mem_regions.num, test_case->expect_num);
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if (test_case->expect_last_paddr == INVALID_VALUE)
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continue;
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num = phys_contig_mem_regions.num;
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KUNIT_EXPECT_EQ(test, phys_contig_mem_regions.regions[num - 1].start,
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test_case->expect_last_paddr);
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KUNIT_EXPECT_EQ(test, range_len(&phys_contig_mem_regions.regions[num - 1]),
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test_case->expect_last_size);
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}
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kunit_kfree(test, phys_contig_mem_regions.regions);
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}
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2021-11-07 14:09:16 +00:00
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static struct kunit_case ne_misc_dev_test_cases[] = {
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2021-11-07 14:09:17 +00:00
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KUNIT_CASE(ne_misc_dev_test_merge_phys_contig_memory_regions),
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2021-11-07 14:09:16 +00:00
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{}
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};
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static struct kunit_suite ne_misc_dev_test_suite = {
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.name = "ne_misc_dev_test",
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.test_cases = ne_misc_dev_test_cases,
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};
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static struct kunit_suite *ne_misc_dev_test_suites[] = {
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&ne_misc_dev_test_suite,
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NULL
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};
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