[PULL 19/86] bios-tables-test: teach test to use smbios 3.0 tables

From: "Michael S. Tsirkin" <mst@redhat.com>
To: qemu-devel@nongnu.org
Cc: Peter Maydell <peter.maydell@linaro.org>,
	Julia Suvorova <jusual@redhat.com>,
	Igor Mammedov <imammedo@redhat.com>, Ani Sinha <ani@anisinha.ca>
Subject: [PULL 19/86] bios-tables-test: teach test to use smbios 3.0 tables
Date: Mon, 31 Oct 2022 08:51:39 -0400	[thread overview]
Message-ID: <20221031124928.128475-20-mst@redhat.com> (raw)
In-Reply-To: <20221031124928.128475-1-mst@redhat.com>

From: Julia Suvorova <jusual@redhat.com>

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 <jusual@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20220731162141.178443-3-jusual@redhat.com>
Message-Id: <20221011111731.101412-3-jusual@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 tests/qtest/bios-tables-test.c | 100 +++++++++++++++++++++++++--------
 1 file changed, 76 insertions(+), 24 deletions(-)

diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
index a72f6ca326..d4fbe6791d 100644
--- a/tests/qtest/bios-tables-test.c
+++ b/tests/qtest/bios-tables-test.c
@@ -88,8 +88,8 @@ 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[SMBIOS_ENTRY_POINT_TYPE__MAX];
+    SmbiosEntryPoint smbios_ep_table;
     uint16_t smbios_cpu_max_speed;
     uint16_t smbios_cpu_curr_speed;
     uint8_t *required_struct_types;
@@ -533,10 +533,9 @@ 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, uint32_t addr)
 {
-    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;
 
     qtest_memread(data->qts, addr, ep_table, sizeof(*ep_table));
     if (memcmp(ep_table->anchor_string, "_SM_", 4)) {
@@ -559,13 +558,29 @@ 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, uint64_t addr)
+{
+    struct smbios_30_entry_point *ep_table = &data->smbios_ep_table.ep30;
+
+    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 SmbiosEntryPointType test_smbios_entry_point(test_data *data)
 {
     uint32_t off;
 
     /* find smbios entry point structure */
     for (off = 0xf0000; off < 0x100000; off += 0x10) {
-        uint8_t sig[] = "_SM_";
+        uint8_t sig[] = "_SM_", sig3[] = "_SM3_";
         int i;
 
         for (i = 0; i < sizeof sig - 1; ++i) {
@@ -574,14 +589,30 @@ static void test_smbios_entry_point(test_data *data)
 
         if (!memcmp(sig, "_SM_", sizeof sig)) {
             /* signature match, but is this a valid entry point? */
-            data->smbios_ep_addr = off;
-            if (smbios_ep_table_ok(data)) {
+            if (smbios_ep2_table_ok(data, off)) {
+                data->smbios_ep_addr[SMBIOS_ENTRY_POINT_TYPE_32] = off;
+            }
+        }
+
+        for (i = 0; i < sizeof sig3 - 1; ++i) {
+            sig3[i] = qtest_readb(data->qts, off + i);
+        }
+
+        if (!memcmp(sig3, "_SM3_", sizeof sig3)) {
+            if (smbios_ep3_table_ok(data, off)) {
+                data->smbios_ep_addr[SMBIOS_ENTRY_POINT_TYPE_64] = off;
+                /* found 64-bit entry point, no need to look for 32-bit one */
                 break;
             }
         }
     }
 
-    g_assert_cmphex(off, <, 0x100000);
+    /* found at least one entry point */
+    g_assert_true(data->smbios_ep_addr[SMBIOS_ENTRY_POINT_TYPE_32] ||
+                  data->smbios_ep_addr[SMBIOS_ENTRY_POINT_TYPE_64]);
+
+    return data->smbios_ep_addr[SMBIOS_ENTRY_POINT_TYPE_64] ?
+           SMBIOS_ENTRY_POINT_TYPE_64 : SMBIOS_ENTRY_POINT_TYPE_32;
 }
 
 static inline bool smbios_single_instance(uint8_t type)
@@ -625,16 +656,23 @@ 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, SmbiosEntryPointType ep_type)
 {
     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;
+
+    SmbiosEntryPoint *ep_table = &data->smbios_ep_table;
+    int i = 0, len, max_len = 0;
     uint8_t type, prv, crt;
+    uint64_t addr;
+
+    if (ep_type == SMBIOS_ENTRY_POINT_TYPE_32) {
+        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 +698,33 @@ static void test_smbios_structs(test_data *data)
         }
 
         /* keep track of max. struct size */
-        if (max_len < len) {
+        if (ep_type == SMBIOS_ENTRY_POINT_TYPE_32 && 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);
+    /*
+     * Until all structures have been scanned (ep21)
+     * or an EOF structure is found (ep30)
+     */
+    } while (ep_type == SMBIOS_ENTRY_POINT_TYPE_32 ?
+                ++i < le16_to_cpu(ep_table->ep21.number_of_structures) :
+                type != 127);
+
+    if (ep_type == SMBIOS_ENTRY_POINT_TYPE_32) {
+        /*
+         * 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 +808,8 @@ 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);
+        SmbiosEntryPointType ep_type = test_smbios_entry_point(data);
+        test_smbios_structs(data, ep_type);
     }
 
     qtest_quit(data->qts);
-- 
MST


