acpi unit-test: compare DSDT and SSDT tables against expected values
This test will run only if iasl is installed on the host machine. The test plan: 1. Dumps the ACPI tables as AML on the disk. 2. Runs iasl to disassembly the tables into ASL files. 3. Runs iasl to disassembly the offline AML files into ASL files. 4. Compares the ASL files. The test runs for both default machine and q35. In case the test fails, it can be easily tweaked to show the differences between the ASL files and understand the issue. Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Marcel Apfelbaum
Michael S. Tsirkin
parent
c2304b52f1
commit
9e8458c023
@ -18,14 +18,22 @@
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#include "qemu/compiler.h"
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#include "hw/i386/acpi-defs.h"
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#define MACHINE_PC "pc"
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#define MACHINE_Q35 "q35"
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/* DSDT and SSDTs format */
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typedef struct {
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AcpiTableHeader header;
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uint8_t *aml;
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int aml_len;
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} AcpiSdtTable;
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gchar *aml; /* aml bytecode from guest */
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gsize aml_len;
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gchar *aml_file;
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gchar *asl; /* asl code generated from aml */
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gsize asl_len;
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gchar *asl_file;
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} QEMU_PACKED AcpiSdtTable;
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typedef struct {
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const char *machine;
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uint32_t rsdp_addr;
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AcpiRsdpDescriptor rsdp_table;
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AcpiRsdtDescriptorRev1 rsdt_table;
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@ -33,8 +41,7 @@ typedef struct {
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AcpiFacsDescriptorRev1 facs_table;
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uint32_t *rsdt_tables_addr;
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int rsdt_tables_nr;
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AcpiSdtTable dsdt_table;
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GArray *ssdt_tables;
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GArray *ssdt_tables; /* first is DSDT */
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} test_data;
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#define LOW(x) ((x) & 0xff)
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@ -91,8 +98,10 @@ typedef struct {
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/* Boot sector code: write SIGNATURE into memory,
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* then halt.
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* Q35 machine requires a minimum 0x7e000 bytes disk.
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* (bug or feature?)
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*/
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static uint8_t boot_sector[0x200] = {
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static uint8_t boot_sector[0x7e000] = {
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/* 7c00: mov $0xdead,%ax */
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[0x00] = 0xb8,
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[0x01] = LOW(SIGNATURE),
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@ -117,17 +126,40 @@ static uint8_t boot_sector[0x200] = {
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};
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static const char *disk = "tests/acpi-test-disk.raw";
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static const char *data_dir = "tests/acpi-test-data";
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static void free_test_data(test_data *data)
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{
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AcpiSdtTable *temp;
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int i;
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g_free(data->rsdt_tables_addr);
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for (i = 0; i < data->ssdt_tables->len; ++i) {
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g_free(g_array_index(data->ssdt_tables, AcpiSdtTable, i).aml);
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if (data->rsdt_tables_addr) {
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g_free(data->rsdt_tables_addr);
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}
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for (i = 0; i < data->ssdt_tables->len; ++i) {
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temp = &g_array_index(data->ssdt_tables, AcpiSdtTable, i);
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if (temp->aml) {
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g_free(temp->aml);
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}
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if (temp->aml_file) {
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if (g_strstr_len(temp->aml_file, -1, "aml-")) {
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unlink(temp->aml_file);
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}
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g_free(temp->aml_file);
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}
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if (temp->asl) {
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g_free(temp->asl);
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}
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if (temp->asl_file) {
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if (g_strstr_len(temp->asl_file, -1, "asl-")) {
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unlink(temp->asl_file);
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}
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g_free(temp->asl_file);
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}
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}
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g_array_free(data->ssdt_tables, false);
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g_free(data->dsdt_table.aml);
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}
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static uint8_t acpi_checksum(const uint8_t *data, int len)
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@ -292,34 +324,207 @@ static void test_dst_table(AcpiSdtTable *sdt_table, uint32_t addr)
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ACPI_READ_ARRAY_PTR(sdt_table->aml, sdt_table->aml_len, addr);
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checksum = acpi_checksum((uint8_t *)sdt_table, sizeof(AcpiTableHeader)) +
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acpi_checksum(sdt_table->aml, sdt_table->aml_len);
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acpi_checksum((uint8_t *)sdt_table->aml, sdt_table->aml_len);
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g_assert(!checksum);
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}
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static void test_acpi_dsdt_table(test_data *data)
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{
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AcpiSdtTable *dsdt_table = &data->dsdt_table;
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AcpiSdtTable dsdt_table;
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uint32_t addr = data->fadt_table.dsdt;
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test_dst_table(dsdt_table, addr);
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g_assert_cmphex(dsdt_table->header.signature, ==, ACPI_DSDT_SIGNATURE);
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memset(&dsdt_table, 0, sizeof(dsdt_table));
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data->ssdt_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
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test_dst_table(&dsdt_table, addr);
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g_assert_cmphex(dsdt_table.header.signature, ==, ACPI_DSDT_SIGNATURE);
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/* Place DSDT first */
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g_array_append_val(data->ssdt_tables, dsdt_table);
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}
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static void test_acpi_ssdt_tables(test_data *data)
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{
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GArray *ssdt_tables;
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int ssdt_tables_nr = data->rsdt_tables_nr - 1; /* fadt is first */
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int i;
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ssdt_tables = g_array_sized_new(false, true, sizeof(AcpiSdtTable),
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ssdt_tables_nr);
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for (i = 0; i < ssdt_tables_nr; i++) {
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AcpiSdtTable ssdt_table;
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memset(&ssdt_table, 0 , sizeof(ssdt_table));
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uint32_t addr = data->rsdt_tables_addr[i + 1]; /* fadt is first */
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test_dst_table(&ssdt_table, addr);
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g_array_append_val(ssdt_tables, ssdt_table);
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g_array_append_val(data->ssdt_tables, ssdt_table);
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}
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data->ssdt_tables = ssdt_tables;
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}
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static bool iasl_installed(void)
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{
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gchar *out = NULL, *out_err = NULL;
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bool ret;
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/* pass 'out' and 'out_err' in order to be redirected */
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ret = g_spawn_command_line_sync("iasl", &out, &out_err, NULL, NULL);
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if (out_err) {
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ret = ret && (out_err[0] == '\0');
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g_free(out_err);
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}
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if (out) {
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g_free(out);
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}
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return ret;
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}
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static void dump_aml_files(test_data *data)
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{
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AcpiSdtTable *sdt;
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GError *error = NULL;
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gint fd;
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ssize_t ret;
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int i;
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for (i = 0; i < data->ssdt_tables->len; ++i) {
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sdt = &g_array_index(data->ssdt_tables, AcpiSdtTable, i);
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g_assert(sdt->aml);
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fd = g_file_open_tmp("aml-XXXXXX", &sdt->aml_file, &error);
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g_assert_no_error(error);
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ret = qemu_write_full(fd, sdt, sizeof(AcpiTableHeader));
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g_assert(ret == sizeof(AcpiTableHeader));
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ret = qemu_write_full(fd, sdt->aml, sdt->aml_len);
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g_assert(ret == sdt->aml_len);
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close(fd);
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}
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}
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static void load_asl(GArray *sdts, AcpiSdtTable *sdt)
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{
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AcpiSdtTable *temp;
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GError *error = NULL;
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GString *command_line = g_string_new("'iasl' ");
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gint fd;
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gchar *out, *out_err;
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gboolean ret;
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int i;
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fd = g_file_open_tmp("asl-XXXXXX.dsl", &sdt->asl_file, &error);
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g_assert_no_error(error);
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close(fd);
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/* build command line */
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g_string_append_printf(command_line, "-p %s ", sdt->asl_file);
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for (i = 0; i < 2; ++i) { /* reference DSDT and SSDT */
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temp = &g_array_index(sdts, AcpiSdtTable, i);
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g_string_append_printf(command_line, "-e %s ", temp->aml_file);
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}
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g_string_append_printf(command_line, "-d %s", sdt->aml_file);
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/* pass 'out' and 'out_err' in order to be redirected */
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g_spawn_command_line_sync(command_line->str, &out, &out_err, NULL, &error);
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g_assert_no_error(error);
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ret = g_file_get_contents(sdt->asl_file, (gchar **)&sdt->asl,
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&sdt->asl_len, &error);
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g_assert(ret);
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g_assert_no_error(error);
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g_assert(sdt->asl_len);
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g_free(out);
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g_free(out_err);
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g_string_free(command_line, true);
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}
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#define COMMENT_END "*/"
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#define DEF_BLOCK "DefinitionBlock ("
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#define BLOCK_NAME_END ".aml"
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static GString *normalize_asl(gchar *asl_code)
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{
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GString *asl = g_string_new(asl_code);
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gchar *comment, *block_name;
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/* strip comments (different generation days) */
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comment = g_strstr_len(asl->str, asl->len, COMMENT_END);
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if (comment) {
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asl = g_string_erase(asl, 0, comment + sizeof(COMMENT_END) - asl->str);
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}
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/* strip def block name (it has file path in it) */
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if (g_str_has_prefix(asl->str, DEF_BLOCK)) {
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block_name = g_strstr_len(asl->str, asl->len, BLOCK_NAME_END);
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g_assert(block_name);
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asl = g_string_erase(asl, 0,
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block_name + sizeof(BLOCK_NAME_END) - asl->str);
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}
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return asl;
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}
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static GArray *load_expected_aml(test_data *data)
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{
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int i;
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AcpiSdtTable *sdt;
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gchar *aml_file;
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GError *error = NULL;
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gboolean ret;
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GArray *exp_ssdt_tables = g_array_new(false, true, sizeof(AcpiSdtTable));
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for (i = 0; i < data->ssdt_tables->len; ++i) {
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AcpiSdtTable exp_sdt;
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sdt = &g_array_index(data->ssdt_tables, AcpiSdtTable, i);
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memset(&exp_sdt, 0, sizeof(exp_sdt));
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exp_sdt.header.signature = sdt->header.signature;
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aml_file = g_strdup_printf("%s/%s/%.4s", data_dir, data->machine,
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(gchar *)&exp_sdt.header.signature);
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exp_sdt.aml_file = aml_file;
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g_assert(g_file_test(aml_file, G_FILE_TEST_EXISTS));
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ret = g_file_get_contents(aml_file, &exp_sdt.aml,
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&exp_sdt.aml_len, &error);
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g_assert(ret);
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g_assert_no_error(error);
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g_assert(exp_sdt.aml);
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g_assert(exp_sdt.aml_len);
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g_array_append_val(exp_ssdt_tables, exp_sdt);
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}
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return exp_ssdt_tables;
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}
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static void test_acpi_asl(test_data *data)
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{
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int i;
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AcpiSdtTable *sdt, *exp_sdt;
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test_data exp_data;
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memset(&exp_data, 0, sizeof(exp_data));
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exp_data.ssdt_tables = load_expected_aml(data);
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dump_aml_files(data);
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for (i = 0; i < data->ssdt_tables->len; ++i) {
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GString *asl, *exp_asl;
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sdt = &g_array_index(data->ssdt_tables, AcpiSdtTable, i);
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exp_sdt = &g_array_index(exp_data.ssdt_tables, AcpiSdtTable, i);
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load_asl(data->ssdt_tables, sdt);
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asl = normalize_asl(sdt->asl);
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load_asl(exp_data.ssdt_tables, exp_sdt);
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exp_asl = normalize_asl(exp_sdt->asl);
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g_assert(!g_strcmp0(asl->str, exp_asl->str));
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g_string_free(asl, true);
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g_string_free(exp_asl, true);
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}
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free_test_data(&exp_data);
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}
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static void test_acpi_one(const char *params, test_data *data)
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@ -329,10 +534,14 @@ static void test_acpi_one(const char *params, test_data *data)
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uint8_t signature_high;
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uint16_t signature;
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int i;
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const char *device = "";
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memset(data, 0, sizeof(*data));
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args = g_strdup_printf("-net none -display none %s %s",
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params ? params : "", disk);
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if (!g_strcmp0(data->machine, MACHINE_Q35)) {
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device = ",id=hd -device ide-hd,drive=hd";
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}
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args = g_strdup_printf("-net none -display none %s -drive file=%s%s,",
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params ? params : "", disk, device);
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qtest_start(args);
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/* Wait at most 1 minute */
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@ -362,6 +571,10 @@ static void test_acpi_one(const char *params, test_data *data)
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test_acpi_dsdt_table(data);
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test_acpi_ssdt_tables(data);
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if (iasl_installed()) {
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test_acpi_asl(data);
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}
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qtest_quit(global_qtest);
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g_free(args);
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}
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@ -373,8 +586,14 @@ static void test_acpi_tcg(void)
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/* Supplying -machine accel argument overrides the default (qtest).
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* This is to make guest actually run.
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*/
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memset(&data, 0, sizeof(data));
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data.machine = MACHINE_PC;
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test_acpi_one("-machine accel=tcg", &data);
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free_test_data(&data);
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memset(&data, 0, sizeof(data));
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data.machine = MACHINE_Q35;
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test_acpi_one("-machine q35,accel=tcg", &data);
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free_test_data(&data);
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}
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