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