LXR qemu/tests/qtest/rtl8139-test.c

   1/*
   2 * QTest testcase for Realtek 8139 NIC
   3 *
   4 * Copyright (c) 2013-2014 SUSE LINUX Products GmbH
   5 *
   6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
   7 * See the COPYING file in the top-level directory.
   8 */
   9
  10#include "qemu/osdep.h"
  11#include "libqtest-single.h"
  12#include "libqos/pci-pc.h"
  13#include "qemu/timer.h"
  14
  15/* Tests only initialization so far. TODO: Replace with functional tests */
  16static void nop(void)
  17{
  18}
  19
  20#define CLK 33333333
  21
  22static QPCIBus *pcibus;
  23static QPCIDevice *dev;
  24static QPCIBar dev_bar;
  25
  26static void save_fn(QPCIDevice *dev, int devfn, void *data)
  27{
  28    QPCIDevice **pdev = (QPCIDevice **) data;
  29
  30    *pdev = dev;
  31}
  32
  33static QPCIDevice *get_device(void)
  34{
  35    QPCIDevice *dev;
  36
  37    pcibus = qpci_new_pc(global_qtest, NULL);
  38    qpci_device_foreach(pcibus, 0x10ec, 0x8139, save_fn, &dev);
  39    g_assert(dev != NULL);
  40
  41    return dev;
  42}
  43
  44#define PORT(name, len, val) \
  45static unsigned __attribute__((unused)) in_##name(void) \
  46{ \
  47    unsigned res = qpci_io_read##len(dev, dev_bar, (val));     \
  48    g_test_message("*%s -> %x", #name, res); \
  49    return res; \
  50} \
  51static void out_##name(unsigned v) \
  52{ \
  53    g_test_message("%x -> *%s", v, #name); \
  54    qpci_io_write##len(dev, dev_bar, (val), v);        \
  55}
  56
  57PORT(Timer, l, 0x48)
  58PORT(IntrMask, w, 0x3c)
  59PORT(IntrStatus, w, 0x3E)
  60PORT(TimerInt, l, 0x54)
  61
  62#define fatal(...) do { g_test_message(__VA_ARGS__); g_assert(0); } while (0)
  63
  64static void test_timer(void)
  65{
  66    const unsigned from = 0.95 * CLK;
  67    const unsigned to = 1.6 * CLK;
  68    unsigned prev, curr, next;
  69    unsigned cnt, diff;
  70
  71    out_IntrMask(0);
  72
  73    in_IntrStatus();
  74    in_Timer();
  75    in_Timer();
  76
  77    /* Test 1. test counter continue and continue */
  78    out_TimerInt(0); /* disable timer */
  79    out_IntrStatus(0x4000);
  80    out_Timer(12345); /* reset timer to 0 */
  81    curr = in_Timer();
  82    if (curr > 0.1 * CLK) {
  83        fatal("time too big %u\n", curr);
  84    }
  85    for (cnt = 0; ; ) {
  86        clock_step(1 * NANOSECONDS_PER_SECOND);
  87        prev = curr;
  88        curr = in_Timer();
  89
  90        /* test skip is in a specific range */
  91        diff = (curr-prev) & 0xffffffffu;
  92        if (diff < from || diff > to) {
  93            fatal("Invalid diff %u (%u-%u)\n", diff, from, to);
  94        }
  95        if (curr < prev && ++cnt == 3) {
  96            break;
  97        }
  98    }
  99
 100    /* Test 2. Check we didn't get an interrupt with TimerInt == 0 */
 101    if (in_IntrStatus() & 0x4000) {
 102        fatal("got an interrupt\n");
 103    }
 104
 105    /* Test 3. Setting TimerInt to 1 and Timer to 0 get interrupt */
 106    out_TimerInt(1);
 107    out_Timer(0);
 108    clock_step(40);
 109    if ((in_IntrStatus() & 0x4000) == 0) {
 110        fatal("we should have an interrupt here!\n");
 111    }
 112
 113    /* Test 3. Check acknowledge */
 114    out_IntrStatus(0x4000);
 115    if (in_IntrStatus() & 0x4000) {
 116        fatal("got an interrupt\n");
 117    }
 118
 119    /* Test. Status set after Timer reset */
 120    out_Timer(0);
 121    out_TimerInt(0);
 122    out_IntrStatus(0x4000);
 123    curr = in_Timer();
 124    out_TimerInt(curr + 0.5 * CLK);
 125    clock_step(1 * NANOSECONDS_PER_SECOND);
 126    out_Timer(0);
 127    if ((in_IntrStatus() & 0x4000) == 0) {
 128        fatal("we should have an interrupt here!\n");
 129    }
 130
 131    /* Test. Status set after TimerInt reset */
 132    out_Timer(0);
 133    out_TimerInt(0);
 134    out_IntrStatus(0x4000);
 135    curr = in_Timer();
 136    out_TimerInt(curr + 0.5 * CLK);
 137    clock_step(1 * NANOSECONDS_PER_SECOND);
 138    out_TimerInt(0);
 139    if ((in_IntrStatus() & 0x4000) == 0) {
 140        fatal("we should have an interrupt here!\n");
 141    }
 142
 143    /* Test 4. Increment TimerInt we should see an interrupt */
 144    curr = in_Timer();
 145    next = curr + 5.0 * CLK;
 146    out_TimerInt(next);
 147    for (cnt = 0; ; ) {
 148        clock_step(1 * NANOSECONDS_PER_SECOND);
 149        prev = curr;
 150        curr = in_Timer();
 151        diff = (curr-prev) & 0xffffffffu;
 152        if (diff < from || diff > to) {
 153            fatal("Invalid diff %u (%u-%u)\n", diff, from, to);
 154        }
 155        if (cnt < 3 && curr > next) {
 156            if ((in_IntrStatus() & 0x4000) == 0) {
 157                fatal("we should have an interrupt here!\n");
 158            }
 159            out_IntrStatus(0x4000);
 160            next = curr + 5.0 * CLK;
 161            out_TimerInt(next);
 162            if (++cnt == 3) {
 163                out_TimerInt(1);
 164            }
 165        /* Test 5. Second time we pass from 0 should see an interrupt */
 166        } else if (cnt >= 3 && curr < prev) {
 167            /* here we should have an interrupt */
 168            if ((in_IntrStatus() & 0x4000) == 0) {
 169                fatal("we should have an interrupt here!\n");
 170            }
 171            out_IntrStatus(0x4000);
 172            if (++cnt == 5) {
 173                break;
 174            }
 175        }
 176    }
 177
 178    g_test_message("Everythink is ok!");
 179}
 180
 181
 182static void test_init(void)
 183{
 184    uint64_t barsize;
 185
 186    dev = get_device();
 187
 188    dev_bar = qpci_iomap(dev, 0, &barsize);
 189
 190    qpci_device_enable(dev);
 191
 192    test_timer();
 193}
 194
 195int main(int argc, char **argv)
 196{
 197    int ret;
 198
 199    qtest_start("-device rtl8139");
 200
 201    g_test_init(&argc, &argv, NULL);
 202    qtest_add_func("/rtl8139/nop", nop);
 203    qtest_add_func("/rtl8139/timer", test_init);
 204
 205    ret = g_test_run();
 206
 207    qtest_end();
 208
 209    return ret;
 210}
 211