LXR qemu/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
  18static 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
  31static 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
  39static void test_smram_lock(void)
  40{
  41    QPCIBus *pcibus;
  42    QPCIDevice *pcidev;
  43    QDict *response;
  44
  45    pcibus = qpci_init_pc();
  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
  76int 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}
  90