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 #include "qemu-common.h"
  15
  16 /* Tests only initialization so far. TODO: Replace with functional tests */
  17 static void nop(void)
  18 {
  19 }
  20
  21 #define CLK 33333333
  22
  23 static QPCIBus *pcibus;
  24 static QPCIDevice *dev;
  25 static QPCIBar dev_bar;
  26
  27 static void save_fn(QPCIDevice *dev, int devfn, void *data)
  28 {
  29     QPCIDevice **pdev = (QPCIDevice **) data;
  30
  31     *pdev = dev;
  32 }
  33
  34 static QPCIDevice *get_device(void)
  35 {
  36     QPCIDevice *dev;
  37
  38     pcibus = qpci_new_pc(global_qtest, 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) \
  46 static unsigned __attribute__((unused)) in_##name(void) \
  47 { \
  48     unsigned res = qpci_io_read##len(dev, dev_bar, (val));     \
  49     g_test_message("*%s -> %x", #name, res); \
  50     return res; \
  51 } \
  52 static void out_##name(unsigned v) \
  53 { \
  54     g_test_message("%x -> *%s", v, #name); \
  55     qpci_io_write##len(dev, dev_bar, (val), v);        \
  56 }
  57
  58 PORT(Timer, l, 0x48)
  59 PORT(IntrMask, w, 0x3c)
  60 PORT(IntrStatus, w, 0x3E)
  61 PORT(TimerInt, l, 0x54)
  62
  63 #define fatal(...) do { g_test_message(__VA_ARGS__); g_assert(0); } while (0)
  64
  65 static 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!");
 180 }
 181
 182
 183 static 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
 196 int main(int argc, char **argv)
 197 {
 198     int ret;
 199
 200     qtest_start("-device rtl8139");
 201
 202     g_test_init(&argc, &argv, NULL);
 203     qtest_add_func("/rtl8139/nop", nop);
 204     qtest_add_func("/rtl8139/timer", test_init);
 205
 206     ret = g_test_run();
 207
 208     qtest_end();
 209
 210     return ret;
 211 }