On Fri, 27 May 2022 18:56:48 +0200
Julia Suvorova <jus...@redhat.com> wrote:
> Introduce the 64-bit entry point. Since we no longer have a total
> number of structures, stop checking for the new ones at the EOF
> structure (type 127).
>
> Signed-off-by: Julia Suvorova <jus...@redhat.com>
> ---
> tests/qtest/bios-tables-test.c | 101 ++++++++++++++++++++++++---------
> 1 file changed, 75 insertions(+), 26 deletions(-)
>
> diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
> index a4a46e97f0..0ba9d749a5 100644
> --- a/tests/qtest/bios-tables-test.c
> +++ b/tests/qtest/bios-tables-test.c
> @@ -75,6 +75,14 @@
> #define OEM_TEST_ARGS "-machine x-oem-id=" OEM_ID ",x-oem-table-id=" \
> OEM_TABLE_ID
>
> +#define SMBIOS_VER21 0
> +#define SMBIOS_VER30 1
> +
> +typedef struct {
> + struct smbios_21_entry_point ep21;
> + struct smbios_30_entry_point ep30;
> +} smbios_entry_point;
> +
> typedef struct {
> bool tcg_only;
> const char *machine;
> @@ -88,8 +96,8 @@ typedef struct {
> uint64_t rsdp_addr;
> uint8_t rsdp_table[36 /* ACPI 2.0+ RSDP size */];
> GArray *tables;
> - uint32_t smbios_ep_addr;
> - struct smbios_21_entry_point smbios_ep_table;
> + uint64_t smbios_ep_addr[2];
> + smbios_entry_point smbios_ep_table;
> uint16_t smbios_cpu_max_speed;
> uint16_t smbios_cpu_curr_speed;
> uint8_t *required_struct_types;
> @@ -533,10 +541,10 @@ static void test_acpi_asl(test_data *data)
> free_test_data(&exp_data);
> }
>
> -static bool smbios_ep_table_ok(test_data *data)
> +static bool smbios_ep2_table_ok(test_data *data)
> {
> - struct smbios_21_entry_point *ep_table = &data->smbios_ep_table;
> - uint32_t addr = data->smbios_ep_addr;
> + struct smbios_21_entry_point *ep_table = &data->smbios_ep_table.ep21;
> + uint32_t addr = data->smbios_ep_addr[SMBIOS_VER21];
>
> qtest_memread(data->qts, addr, ep_table, sizeof(*ep_table));
> if (memcmp(ep_table->anchor_string, "_SM_", 4)) {
> @@ -559,29 +567,59 @@ static bool smbios_ep_table_ok(test_data *data)
> return true;
> }
>
> -static void test_smbios_entry_point(test_data *data)
> +static bool smbios_ep3_table_ok(test_data *data)
> +{
> + struct smbios_30_entry_point *ep_table = &data->smbios_ep_table.ep30;
> + uint64_t addr = data->smbios_ep_addr[SMBIOS_VER30];
> +
> + qtest_memread(data->qts, addr, ep_table, sizeof(*ep_table));
> + if (memcmp(ep_table->anchor_string, "_SM3_", 5)) {
> + return false;
> + }
> +
> + if (acpi_calc_checksum((uint8_t *)ep_table, sizeof *ep_table)) {
> + return false;
> + }
> +
> + return true;
> +}
> +
> +static int test_smbios_entry_point(test_data *data)
> {
> uint32_t off;
> + bool found_ep2 = false, found_ep3 = false;
>
> /* find smbios entry point structure */
> for (off = 0xf0000; off < 0x100000; off += 0x10) {
> - uint8_t sig[] = "_SM_";
> + uint8_t sig[] = "_SM3_";
well I'd just add a separate sig3
> int i;
>
> for (i = 0; i < sizeof sig - 1; ++i) {
> sig[i] = qtest_readb(data->qts, off + i);
> }
>
> - if (!memcmp(sig, "_SM_", sizeof sig)) {
> + if (!found_ep2 && !memcmp(sig, "_SM_", sizeof sig - 2)) {
keep original v2 code and just add similar chunk for v3,
drop found_foo locals,
that should make it easier to read/follow
(i.e. less conditions to think about and no magic fiddling with the length of
signature)
> /* signature match, but is this a valid entry point? */
> - data->smbios_ep_addr = off;
> - if (smbios_ep_table_ok(data)) {
> - break;
> + data->smbios_ep_addr[SMBIOS_VER21] = off;
> + if (smbios_ep2_table_ok(data)) {
> + found_ep2 = true;
> + }
> + } else if (!found_ep3 && !memcmp(sig, "_SM3_", sizeof sig - 1)) {
> + data->smbios_ep_addr[SMBIOS_VER30] = off;
> + if (smbios_ep3_table_ok(data)) {
> + found_ep3 = true;
> }
> }
> +
> + if (found_ep2 || found_ep3) {
> + break;
> + }
> }
>
> - g_assert_cmphex(off, <, 0x100000);
> + g_assert_cmphex(data->smbios_ep_addr[SMBIOS_VER21], <, 0x100000);
> + g_assert_cmphex(data->smbios_ep_addr[SMBIOS_VER30], <, 0x100000);
> +
> + return found_ep3 ? SMBIOS_VER30 : SMBIOS_VER21;
and use content of data->smbios_ep_addr[] to return found version
> }
>
> static inline bool smbios_single_instance(uint8_t type)
> @@ -625,16 +663,23 @@ static bool smbios_cpu_test(test_data *data, uint32_t
> addr)
> return true;
> }
>
> -static void test_smbios_structs(test_data *data)
> +static void test_smbios_structs(test_data *data, int ver)
> {
> DECLARE_BITMAP(struct_bitmap, SMBIOS_MAX_TYPE+1) = { 0 };
> - struct smbios_21_entry_point *ep_table = &data->smbios_ep_table;
> - uint32_t addr = le32_to_cpu(ep_table->structure_table_address);
> - int i, len, max_len = 0;
> +
> + smbios_entry_point *ep_table = &data->smbios_ep_table;
> + int i = 0, len, max_len = 0;
> uint8_t type, prv, crt;
> + uint64_t addr;
> +
> + if (ver == SMBIOS_VER21) {
> + addr = le32_to_cpu(ep_table->ep21.structure_table_address);
> + } else {
> + addr = le64_to_cpu(ep_table->ep30.structure_table_address);
> + }
>
> /* walk the smbios tables */
> - for (i = 0; i < le16_to_cpu(ep_table->number_of_structures); i++) {
> + do {
>
> /* grab type and formatted area length from struct header */
> type = qtest_readb(data->qts, addr);
> @@ -660,19 +705,23 @@ static void test_smbios_structs(test_data *data)
> }
>
> /* keep track of max. struct size */
> - if (max_len < len) {
> + if (ver == SMBIOS_VER21 && max_len < len) {
> max_len = len;
> - g_assert_cmpuint(max_len, <=, ep_table->max_structure_size);
> + g_assert_cmpuint(max_len, <=, ep_table->ep21.max_structure_size);
> }
>
> /* start of next structure */
> addr += len;
> - }
>
> - /* total table length and max struct size must match entry point values
> */
> - g_assert_cmpuint(le16_to_cpu(ep_table->structure_table_length), ==,
> - addr - le32_to_cpu(ep_table->structure_table_address));
> - g_assert_cmpuint(le16_to_cpu(ep_table->max_structure_size), ==, max_len);
> + } while (ver == SMBIOS_VER21 ?
> + (++i < le16_to_cpu(ep_table->ep21.number_of_structures)) :
> (type != 127));
> +
> + if (ver == SMBIOS_VER21) {
> + /* total table length and max struct size must match entry point
> values */
> + g_assert_cmpuint(le16_to_cpu(ep_table->ep21.structure_table_length),
> ==,
> + addr -
> le32_to_cpu(ep_table->ep21.structure_table_address));
> + g_assert_cmpuint(le16_to_cpu(ep_table->ep21.max_structure_size), ==,
> max_len);
> + }
>
> /* required struct types must all be present */
> for (i = 0; i < data->required_struct_types_len; i++) {
> @@ -756,8 +805,8 @@ static void test_acpi_one(const char *params, test_data
> *data)
> * https://bugs.launchpad.net/qemu/+bug/1821884
> */
> if (!use_uefi) {
> - test_smbios_entry_point(data);
> - test_smbios_structs(data);
> + int ver = test_smbios_entry_point(data);
> + test_smbios_structs(data, ver);
> }
>
> qtest_quit(data->qts);
