[Qemu-devel] [PATCH 02/14] tests: acpi: make RSDT test routine handle XSDT

[Igor Mammedov <imammedo@redhat.com>]

If RSDP revision is more than 0 fetch table pointed by XSDT
and fallback to legacy RSDT table otherwise.

While at it drop unused acpi_get_xsdt_address().

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
PS:
 it doesn't affect existing pc/q35 machines as they use RSDP.revision == 0
 but it will be used by followup patch to enable testing arm/virt
 board which uses provides XSDT table.
---
 tests/acpi-utils.h       |  3 +--
 tests/acpi-utils.c       | 14 +-------------
 tests/bios-tables-test.c | 18 +++++++++++++-----
 3 files changed, 15 insertions(+), 20 deletions(-)

diff --git a/tests/acpi-utils.h b/tests/acpi-utils.h
index 3b11f47..398900c 100644
--- a/tests/acpi-utils.h
+++ b/tests/acpi-utils.h
@@ -47,8 +47,7 @@ typedef struct {
 uint8_t acpi_calc_checksum(const uint8_t *data, int len);
 uint32_t acpi_find_rsdp_address(QTestState *qts);
 uint64_t uefi_find_rsdp_addr(QTestState *qts, uint64_t start, uint64_t size);
-uint64_t acpi_get_xsdt_address(uint8_t *rsdp_table);
-void acpi_parse_rsdp_table(QTestState *qts, uint32_t addr, uint8_t *rsdp_table);
+void acpi_parse_rsdp_table(QTestState *qts, uint64_t addr, uint8_t *rsdp_table);
 void acpi_fetch_table(QTestState *qts, uint8_t **aml, uint32_t *aml_len,
                       const uint8_t *addr_ptr, const char *sig,
                       bool verify_checksum);
diff --git a/tests/acpi-utils.c b/tests/acpi-utils.c
index b9ff9df..84068a8 100644
--- a/tests/acpi-utils.c
+++ b/tests/acpi-utils.c
@@ -51,19 +51,7 @@ uint32_t acpi_find_rsdp_address(QTestState *qts)
     return off;
 }
 
-uint64_t acpi_get_xsdt_address(uint8_t *rsdp_table)
-{
-    uint64_t xsdt_physical_address;
-    uint8_t revision = rsdp_table[15 /* Revision offset */];
-
-    /* We must have revision 2 if we're looking for an XSDT pointer */
-    g_assert(revision == 2);
-
-    memcpy(&xsdt_physical_address, &rsdp_table[24 /* XsdtAddress offset */], 8);
-    return le64_to_cpu(xsdt_physical_address);
-}
-
-void acpi_parse_rsdp_table(QTestState *qts, uint32_t addr, uint8_t *rsdp_table)
+void acpi_parse_rsdp_table(QTestState *qts, uint64_t addr, uint8_t *rsdp_table)
 {
     uint8_t revision;
 
diff --git a/tests/bios-tables-test.c b/tests/bios-tables-test.c
index 0bf7164..529bfc4 100644
--- a/tests/bios-tables-test.c
+++ b/tests/bios-tables-test.c
@@ -107,17 +107,25 @@ static void test_acpi_rsdp_table(test_data *data)
     }
 }
 
-static void test_acpi_rsdt_table(test_data *data)
+static void test_acpi_rxsdt_table(test_data *data)
 {
+    const char *sig = "RSDT";
     AcpiSdtTable rsdt = {};
+    int entry_size = 4;
+    int addr_off = 16 /* RsdtAddress */;
     uint8_t *ent;
 
-    /* read RSDT table */
+    if (data->rsdp_table[15 /* Revision offset */] != 0) {
+        addr_off = 24 /* XsdtAddress */;
+        entry_size = 8;
+        sig = "XSDT";
+    }
+    /* read [RX]SDT table */
     acpi_fetch_table(data->qts, &rsdt.aml, &rsdt.aml_len,
-                     &data->rsdp_table[16 /* RsdtAddress */], "RSDT", true);
+                     &data->rsdp_table[addr_off], sig, true);
 
     /* Load all tables and add to test list directly RSDT referenced tables */
-    ACPI_FOREACH_RSDT_ENTRY(rsdt.aml, rsdt.aml_len, ent, 4 /* Entry size */) {
+    ACPI_FOREACH_RSDT_ENTRY(rsdt.aml, rsdt.aml_len, ent, entry_size) {
         AcpiSdtTable ssdt_table = {};
 
         acpi_fetch_table(data->qts, &ssdt_table.aml, &ssdt_table.aml_len, ent,
@@ -519,7 +527,7 @@ static void test_acpi_one(const char *params, test_data *data)
     data->tables = g_array_new(false, true, sizeof(AcpiSdtTable));
     test_acpi_rsdp_address(data);
     test_acpi_rsdp_table(data);
-    test_acpi_rsdt_table(data);
+    test_acpi_rxsdt_table(data);
     test_acpi_fadt_table(data);
 
     if (iasl) {
-- 
2.7.4