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 */
  16 static void nop(void)
  17 {
  18 }
  19
  20 #define CLK 33333333
  21
  22 static QPCIBus *pcibus;
  23 static QPCIDevice *dev;
  24 static QPCIBar dev_bar;
  25
  26 static void save_fn(QPCIDevice *dev, int devfn, void *data)
  27 {
  28     QPCIDevice **pdev = (QPCIDevice **) data;
  29
  30     *pdev = dev;
  31 }
  32
  33 static 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) \
  45 static 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 } \
  51 static 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
  57 PORT(Timer, l, 0x48)
  58 PORT(IntrMask, w, 0x3c)
  59 PORT(IntrStatus, w, 0x3E)
  60 PORT(TimerInt, l, 0x54)
  61
  62 #define fatal(...) do { g_test_message(__VA_ARGS__); g_assert(0); } while (0)
  63
  64 static 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
 182 static 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
 195 int 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 }