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 "libqtest.h"
  14 #include "libqos/pci.h"
  15 #include "libqos/pci-pc.h"
  16 #include "hw/pci-host/q35.h"
  17
  18 static void smram_set_bit(QPCIDevice *pcidev, uint8_t mask, bool enabled)
  19 {
  20     uint8_t smram;
  21
  22     smram = qpci_config_readb(pcidev, MCH_HOST_BRIDGE_SMRAM);
  23     if (enabled) {
  24         smram |= mask;
  25     } else {
  26         smram &= ~mask;
  27     }
  28     qpci_config_writeb(pcidev, MCH_HOST_BRIDGE_SMRAM, smram);
  29 }
  30
  31 static bool smram_test_bit(QPCIDevice *pcidev, uint8_t mask)
  32 {
  33     uint8_t smram;
  34
  35     smram = qpci_config_readb(pcidev, MCH_HOST_BRIDGE_SMRAM);
  36     return smram & mask;
  37 }
  38
  39 static void test_smram_lock(void)
  40 {
  41     QPCIBus *pcibus;
  42     QPCIDevice *pcidev;
  43     QDict *response;
  44
  45     pcibus = qpci_init_pc(NULL);
  46     g_assert(pcibus != NULL);
  47
  48     pcidev = qpci_device_find(pcibus, 0);
  49     g_assert(pcidev != NULL);
  50
  51     /* check open is settable */
  52     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, false);
  53     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == false);
  54     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, true);
  55     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == true);
  56
  57     /* lock, check open is cleared & not settable */
  58     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_LCK, true);
  59     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == false);
  60     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, true);
  61     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == false);
  62
  63     /* reset */
  64     response = qmp("{'execute': 'system_reset', 'arguments': {} }");
  65     g_assert(response);
  66     g_assert(!qdict_haskey(response, "error"));
  67     QDECREF(response);
  68
  69     /* check open is settable again */
  70     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, false);
  71     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == false);
  72     smram_set_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN, true);
  73     g_assert(smram_test_bit(pcidev, MCH_HOST_BRIDGE_SMRAM_D_OPEN) == true);
  74 }
  75
  76 int main(int argc, char **argv)
  77 {
  78     int ret;
  79
  80     g_test_init(&argc, &argv, NULL);
  81
  82     qtest_add_func("/q35/smram/lock", test_smram_lock);
  83
  84     qtest_start("-M q35");
  85     ret = g_test_run();
  86     qtest_end();
  87
  88     return ret;
  89 }