// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/init.h>
#include <linux/log2.h>
#include <kunit/test.h>
#include <asm/guest-state-buffer.h>
static void test_creating_buffer(struct kunit *test)
{
struct kvmppc_gs_buff *gsb;
size_t size = 0x100;
gsb = kvmppc_gsb_new(size, 0, 0, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gsb);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gsb->hdr);
KUNIT_EXPECT_EQ(test, gsb->capacity, roundup_pow_of_two(size));
KUNIT_EXPECT_EQ(test, gsb->len, sizeof(__be32));
kvmppc_gsb_free(gsb);
}
static void test_adding_element(struct kunit *test)
{
const struct kvmppc_gs_elem *head, *curr;
union {
__vector128 v;
u64 dw[2];
} u;
int rem;
struct kvmppc_gs_buff *gsb;
size_t size = 0x1000;
int i, rc;
u64 data;
gsb = kvmppc_gsb_new(size, 0, 0, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gsb);
/* Single elements, direct use of __kvmppc_gse_put() */
data = 0xdeadbeef;
rc = __kvmppc_gse_put(gsb, KVMPPC_GSID_GPR(0), 8, &data);
KUNIT_EXPECT_GE(test, rc, 0);
head = kvmppc_gsb_data(gsb);
KUNIT_EXPECT_EQ(test, kvmppc_gse_iden(head), KVMPPC_GSID_GPR(0));
KUNIT_EXPECT_EQ(test, kvmppc_gse_len(head), 8);
data = 0;
memcpy(&data, kvmppc_gse_data(head), 8);
KUNIT_EXPECT_EQ(test, data, 0xdeadbeef);
/* Multiple elements, simple wrapper */
rc = kvmppc_gse_put_u64(gsb, KVMPPC_GSID_GPR(1), 0xcafef00d);
KUNIT_EXPECT_GE(test, rc, 0);
u.dw[0] = 0x1;
u.dw[1] = 0x2;
rc = kvmppc_gse_put_vector128(gsb, KVMPPC_GSID_VSRS(0), &u.v);
KUNIT_EXPECT_GE(test, rc, 0);
u.dw[0] = 0x0;
u.dw[1] = 0x0;
kvmppc_gsb_for_each_elem(i, curr, gsb, rem) {
switch (i) {
case 0:
KUNIT_EXPECT_EQ(test, kvmppc_gse_iden(curr),
KVMPPC_GSID_GPR(0));
KUNIT_EXPECT_EQ(test, kvmppc_gse_len(curr), 8);
KUNIT_EXPECT_EQ(test, kvmppc_gse_get_be64(curr),
0xdeadbeef);
break;
case 1:
KUNIT_EXPECT_EQ(test, kvmppc_gse_iden(curr),
KVMPPC_GSID_GPR(1));
KUNIT_EXPECT_EQ(test, kvmppc_gse_len(curr), 8);
KUNIT_EXPECT_EQ(test, kvmppc_gse_get_u64(curr),
0xcafef00d);
break;
case 2:
KUNIT_EXPECT_EQ(test, kvmppc_gse_iden(curr),
KVMPPC_GSID_VSRS(0));
KUNIT_EXPECT_EQ(test, kvmppc_gse_len(curr), 16);
kvmppc_gse_get_vector128(curr, &u.v);
KUNIT_EXPECT_EQ(test, u.dw[0], 0x1);
KUNIT_EXPECT_EQ(test, u.dw[1], 0x2);
break;
}
}
KUNIT_EXPECT_EQ(test, i, 3);
kvmppc_gsb_reset(gsb);
KUNIT_EXPECT_EQ(test, kvmppc_gsb_nelems(gsb), 0);
KUNIT_EXPECT_EQ(test, kvmppc_gsb_len(gsb),
sizeof(struct kvmppc_gs_header));
kvmppc_gsb_free(gsb);
}
static void test_gs_parsing(struct kunit *test)
{
struct kvmppc_gs_elem *gse;
struct kvmppc_gs_parser gsp = { 0 };
struct kvmppc_gs_buff *gsb;
size_t size = 0x1000;
u64 tmp1, tmp2;
gsb = kvmppc_gsb_new(size, 0, 0, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gsb);
tmp1 = 0xdeadbeefull;
kvmppc_gse_put_u64(gsb, KVMPPC_GSID_GPR(0), tmp1);
KUNIT_EXPECT_GE(test, kvmppc_gse_parse(&gsp, gsb), 0);
gse = kvmppc_gsp_lookup(&gsp, KVMPPC_GSID_GPR(0));
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gse);
tmp2 = kvmppc_gse_get_u64(gse);
KUNIT_EXPECT_EQ(test, tmp2, 0xdeadbeefull);
kvmppc_gsb_free(gsb);
}
static void test_gs_bitmap(struct kunit *test)
{
struct kvmppc_gs_bitmap gsbm = { 0 };
struct kvmppc_gs_bitmap gsbm1 = { 0 };
struct kvmppc_gs_bitmap gsbm2 = { 0 };
u16 iden;
int i, j;
i = 0;
for (u16 iden = KVMPPC_GSID_HOST_STATE_SIZE;
iden <= KVMPPC_GSID_PROCESS_TABLE; iden++) {
kvmppc_gsbm_set(&gsbm, iden);
kvmppc_gsbm_set(&gsbm1, iden);
KUNIT_EXPECT_TRUE(test, kvmppc_gsbm_test(&gsbm, iden));
kvmppc_gsbm_clear(&gsbm, iden);
KUNIT_EXPECT_FALSE(test, kvmppc_gsbm_test(&gsbm, iden));
i++;
}
for (u16 iden = KVMPPC_GSID_RUN_INPUT; iden <= KVMPPC_GSID_VPA;
iden++) {
kvmppc_gsbm_set(&gsbm, iden);
kvmppc_gsbm_set(&gsbm1, iden);
KUNIT_EXPECT_TRUE(test, kvmppc_gsbm_test(&gsbm, iden));
kvmppc_gsbm_clear(&gsbm, iden);
KUNIT_EXPECT_FALSE(test, kvmppc_gsbm_test(&gsbm, iden));
i++;
}
for (u16 iden = KVMPPC_GSID_GPR(0); iden <= KVMPPC_GSE_DW_REGS_END; iden++) {
kvmppc_gsbm_set(&gsbm, iden);
kvmppc_gsbm_set(&gsbm1, iden);
KUNIT_EXPECT_TRUE(test, kvmppc_gsbm_test(&gsbm, iden));
kvmppc_gsbm_clear(&gsbm, iden);
KUNIT_EXPECT_FALSE(test, kvmppc_gsbm_test(&gsbm, iden));
i++;
}
for (u16 iden = KVMPPC_GSID_CR; iden <= KVMPPC_GSID_PSPB; iden++) {
kvmppc_gsbm_set(&gsbm, iden);
kvmppc_gsbm_set(&gsbm1, iden);
KUNIT_EXPECT_TRUE(test, kvmppc_gsbm_test(&gsbm, iden));
kvmppc_gsbm_clear(&gsbm, iden);
KUNIT_EXPECT_FALSE(test, kvmppc_gsbm_test(&gsbm, iden));
i++;
}
for (u16 iden = KVMPPC_GSID_VSRS(0); iden <= KVMPPC_GSID_VSRS(63);
iden++) {
kvmppc_gsbm_set(&gsbm, iden);
kvmppc_gsbm_set(&gsbm1, iden);
KUNIT_EXPECT_TRUE(test, kvmppc_gsbm_test(&gsbm, iden));
kvmppc_gsbm_clear(&gsbm, iden);
KUNIT_EXPECT_FALSE(test, kvmppc_gsbm_test(&gsbm, iden));
i++;
}
for (u16 iden = KVMPPC_GSID_HDAR; iden <= KVMPPC_GSID_ASDR; iden++) {
kvmppc_gsbm_set(&gsbm, iden);
kvmppc_gsbm_set(&gsbm1, iden);
KUNIT_EXPECT_TRUE(test, kvmppc_gsbm_test(&gsbm, iden));
kvmppc_gsbm_clear(&gsbm, iden);
KUNIT_EXPECT_FALSE(test, kvmppc_gsbm_test(&gsbm, iden));
i++;
}
j = 0;
kvmppc_gsbm_for_each(&gsbm1, iden)
{
kvmppc_gsbm_set(&gsbm2, iden);
j++;
}
KUNIT_EXPECT_EQ(test, i, j);
KUNIT_EXPECT_MEMEQ(test, &gsbm1, &gsbm2, sizeof(gsbm1));
}
struct kvmppc_gs_msg_test1_data {
u64 a;
u32 b;
struct kvmppc_gs_part_table c;
struct kvmppc_gs_proc_table d;
struct kvmppc_gs_buff_info e;
};
static size_t test1_get_size(struct kvmppc_gs_msg *gsm)
{
size_t size = 0;
u16 ids[] = {
KVMPPC_GSID_PARTITION_TABLE,
KVMPPC_GSID_PROCESS_TABLE,
KVMPPC_GSID_RUN_INPUT,
KVMPPC_GSID_GPR(0),
KVMPPC_GSID_CR,
};
for (int i = 0; i < ARRAY_SIZE(ids); i++)
size += kvmppc_gse_total_size(kvmppc_gsid_size(ids[i]));
return size;
}
static int test1_fill_info(struct kvmppc_gs_buff *gsb,
struct kvmppc_gs_msg *gsm)
{
struct kvmppc_gs_msg_test1_data *data = gsm->data;
if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_GPR(0)))
kvmppc_gse_put_u64(gsb, KVMPPC_GSID_GPR(0), data->a);
if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_CR))
kvmppc_gse_put_u32(gsb, KVMPPC_GSID_CR, data->b);
if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_PARTITION_TABLE))
kvmppc_gse_put_part_table(gsb, KVMPPC_GSID_PARTITION_TABLE,
data->c);
if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_PROCESS_TABLE))
kvmppc_gse_put_proc_table(gsb, KVMPPC_GSID_PARTITION_TABLE,
data->d);
if (kvmppc_gsm_includes(gsm, KVMPPC_GSID_RUN_INPUT))
kvmppc_gse_put_buff_info(gsb, KVMPPC_GSID_RUN_INPUT, data->e);
return 0;
}
static int test1_refresh_info(struct kvmppc_gs_msg *gsm,
struct kvmppc_gs_buff *gsb)
{
struct kvmppc_gs_parser gsp = { 0 };
struct kvmppc_gs_msg_test1_data *data = gsm->data;
struct kvmppc_gs_elem *gse;
int rc;
rc = kvmppc_gse_parse(&gsp, gsb);
if (rc < 0)
return rc;
gse = kvmppc_gsp_lookup(&gsp, KVMPPC_GSID_GPR(0));
if (gse)
data->a = kvmppc_gse_get_u64(gse);
gse = kvmppc_gsp_lookup(&gsp, KVMPPC_GSID_CR);
if (gse)
data->b = kvmppc_gse_get_u32(gse);
return 0;
}
static struct kvmppc_gs_msg_ops gs_msg_test1_ops = {
.get_size = test1_get_size,
.fill_info = test1_fill_info,
.refresh_info = test1_refresh_info,
};
static void test_gs_msg(struct kunit *test)
{
struct kvmppc_gs_msg_test1_data test1_data = {
.a = 0xdeadbeef,
.b = 0x1,
};
struct kvmppc_gs_msg *gsm;
struct kvmppc_gs_buff *gsb;
gsm = kvmppc_gsm_new(&gs_msg_test1_ops, &test1_data, GSM_SEND,
GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gsm);
gsb = kvmppc_gsb_new(kvmppc_gsm_size(gsm), 0, 0, GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, gsb);
kvmppc_gsm_include(gsm, KVMPPC_GSID_PARTITION_TABLE);
kvmppc_gsm_include(gsm, KVMPPC_GSID_PROCESS_TABLE);
kvmppc_gsm_include(gsm, KVMPPC_GSID_RUN_INPUT);
kvmppc_gsm_include(gsm, KVMPPC_GSID_GPR(0));
kvmppc_gsm_include(gsm, KVMPPC_GSID_CR);
kvmppc_gsm_fill_info(gsm, gsb);
memset(&test1_data, 0, sizeof(test1_data));
kvmppc_gsm_refresh_info(gsm, gsb);
KUNIT_EXPECT_EQ(test, test1_data.a, 0xdeadbeef);
KUNIT_EXPECT_EQ(test, test1_data.b, 0x1);
kvmppc_gsm_free(gsm);
}
static struct kunit_case guest_state_buffer_testcases[] = {
KUNIT_CASE(test_creating_buffer),
KUNIT_CASE(test_adding_element),
KUNIT_CASE(test_gs_bitmap),
KUNIT_CASE(test_gs_parsing),
KUNIT_CASE(test_gs_msg),
{}
};
static struct kunit_suite guest_state_buffer_test_suite = {
.name = "guest_state_buffer_test",
.test_cases = guest_state_buffer_testcases,
};
kunit_test_suites(&guest_state_buffer_test_suite);
MODULE_DESCRIPTION("KUnit tests for Guest State Buffer APIs");
MODULE_LICENSE("GPL");
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