tests/q35-test.c

   1 /*
   2  * QTest testcase for Q35 northbridge
   3  *
   4  * Copyright (c) 2015 Red Hat, Inc.
   5  *
   6  * Author: Gerd Hoffmann <kraxel@redhat.com>
   7  *
   8  * This work is licensed under the terms of the GNU GPL, version 2 or later.
   9  * See the COPYING file in the top-level directory.
  10  */
  11
  12 #include "qemu/osdep.h"
  13 #include <glib.h>
  14 #include "libqtest.h"
  15 #include "libqos/pci.h"
  16 #include "libqos/pci-pc.h"
  17 #include "hw/pci-host/q35.h"
  18
  19 static void smram_set_bit(QPCIDevice *pcidev, uint8_t mask, bool enabled)
  20 {
  21     uint8_t smram;
  22
  23     smram = qpci_config_readb(pcidev, MCH_HOST_BRIDGE_SMRAM);
  24     if (enabled) {
  25         smram |= mask;
  26     } else {
  27         smram &= ~mask;
  28     }
  29     qpci_config_writeb(pcidev, MCH_HOST_BRIDGE_SMRAM, smram);
  30 }
  31
  32 static bool smram_test_bit(QPCIDevice *pcidev, uint8_t mask)
  33 {
  34     uint8_t smram;
  35
  36     smram = qpci_config_readb(pcidev, MCH_HOST_BRIDGE_SMRAM);
  37     return smram & mask;
  38 }
  39
  40 static void test_smram_lock(void)
  41 {
  42     QPCIBus *pcibus;
  43     QPCIDevice *pcidev;
  44     QDict *response;
  45
  46     pcibus = qpci_init_pc();
  47     g_assert(pcibus != NULL);
  48
  49     pcidev = qpci_device_find(pcibus, 0);
  50     g_assert(pcidev != NULL);
  51
  52     /* check open is settable */
  53     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, false);
  54     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == false);
  55     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, true);
  56     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == true);
  57
  58     /* lock, check open is cleared & not settable */
  59     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_LCK, true);
  60     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == false);
  61     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, true);
  62     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == false);
  63
  64     /* reset */
  65     response = qmp("{'execute': 'system_reset', 'arguments': {} }");
  66     g_assert(response);
  67     g_assert(!qdict_haskey(response, "error"));
  68     QDECREF(response);
  69
  70     /* check open is settable again */
  71     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, false);
  72     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == false);
  73     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, true);
  74     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == true);
  75 }
  76
  77 int main(int argc, char **argv)
  78 {
  79     int ret;
  80
  81     g_test_init(&argc, &argv, NULL);
  82
  83     qtest_add_func("/q35/smram/lock", test_smram_lock);
  84
  85     qtest_start("-M q35");
  86     ret = g_test_run();
  87     qtest_end();
  88
  89     return ret;
  90 }