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 <glib.h>
  12 #include "libqtest.h"
  13 #include "libqos/pci-pc.h"
  14 #include "qemu/timer.h"
  15 #include "qemu-common.h"
  16
  17 /* Tests only initialization so far. TODO: Replace with functional tests */
  18 static void nop(void)
  19 {
  20 }
  21
  22 #define CLK 33333333
  23
  24 static QPCIBus *pcibus;
  25 static QPCIDevice *dev;
  26 static void *dev_base;
  27
  28 static void save_fn(QPCIDevice *dev, int devfn, void *data)
  29 {
  30     QPCIDevice **pdev = (QPCIDevice **) data;
  31
  32     *pdev = dev;
  33 }
  34
  35 static QPCIDevice *get_device(void)
  36 {
  37     QPCIDevice *dev;
  38
  39     pcibus = qpci_init_pc();
  40     qpci_device_foreach(pcibus, 0x10ec, 0x8139, save_fn, &dev);
  41     g_assert(dev != NULL);
  42
  43     return dev;
  44 }
  45
  46 #define PORT(name, len, val) \
  47 static unsigned __attribute__((unused)) in_##name(void) \
  48 { \
  49     unsigned res = qpci_io_read##len(dev, dev_base+(val)); \
  50     g_test_message("*%s -> %x\n", #name, res); \
  51     return res; \
  52 } \
  53 static void out_##name(unsigned v) \
  54 { \
  55     g_test_message("%x -> *%s\n", v, #name); \
  56     qpci_io_write##len(dev, dev_base+(val), v); \
  57 }
  58
  59 PORT(Timer, l, 0x48)
  60 PORT(IntrMask, w, 0x3c)
  61 PORT(IntrStatus, w, 0x3E)
  62 PORT(TimerInt, l, 0x54)
  63
  64 #define fatal(...) do { g_test_message(__VA_ARGS__); g_assert(0); } while (0)
  65
  66 static void test_timer(void)
  67 {
  68     const unsigned from = 0.95 * CLK;
  69     const unsigned to = 1.6 * CLK;
  70     unsigned prev, curr, next;
  71     unsigned cnt, diff;
  72
  73     out_IntrMask(0);
  74
  75     in_IntrStatus();
  76     in_Timer();
  77     in_Timer();
  78
  79     /* Test 1. test counter continue and continue */
  80     out_TimerInt(0); /* disable timer */
  81     out_IntrStatus(0x4000);
  82     out_Timer(12345); /* reset timer to 0 */
  83     curr = in_Timer();
  84     if (curr > 0.1 * CLK) {
  85         fatal("time too big %u\n", curr);
  86     }
  87     for (cnt = 0; ; ) {
  88         clock_step(1 * NANOSECONDS_PER_SECOND);
  89         prev = curr;
  90         curr = in_Timer();
  91
  92         /* test skip is in a specific range */
  93         diff = (curr-prev) & 0xffffffffu;
  94         if (diff < from || diff > to) {
  95             fatal("Invalid diff %u (%u-%u)\n", diff, from, to);
  96         }
  97         if (curr < prev && ++cnt == 3) {
  98             break;
  99         }
 100     }
 101
 102     /* Test 2. Check we didn't get an interrupt with TimerInt == 0 */
 103     if (in_IntrStatus() & 0x4000) {
 104         fatal("got an interrupt\n");
 105     }
 106
 107     /* Test 3. Setting TimerInt to 1 and Timer to 0 get interrupt */
 108     out_TimerInt(1);
 109     out_Timer(0);
 110     clock_step(40);
 111     if ((in_IntrStatus() & 0x4000) == 0) {
 112         fatal("we should have an interrupt here!\n");
 113     }
 114
 115     /* Test 3. Check acknowledge */
 116     out_IntrStatus(0x4000);
 117     if (in_IntrStatus() & 0x4000) {
 118         fatal("got an interrupt\n");
 119     }
 120
 121     /* Test. Status set after Timer reset */
 122     out_Timer(0);
 123     out_TimerInt(0);
 124     out_IntrStatus(0x4000);
 125     curr = in_Timer();
 126     out_TimerInt(curr + 0.5 * CLK);
 127     clock_step(1 * NANOSECONDS_PER_SECOND);
 128     out_Timer(0);
 129     if ((in_IntrStatus() & 0x4000) == 0) {
 130         fatal("we should have an interrupt here!\n");
 131     }
 132
 133     /* Test. Status set after TimerInt reset */
 134     out_Timer(0);
 135     out_TimerInt(0);
 136     out_IntrStatus(0x4000);
 137     curr = in_Timer();
 138     out_TimerInt(curr + 0.5 * CLK);
 139     clock_step(1 * NANOSECONDS_PER_SECOND);
 140     out_TimerInt(0);
 141     if ((in_IntrStatus() & 0x4000) == 0) {
 142         fatal("we should have an interrupt here!\n");
 143     }
 144
 145     /* Test 4. Increment TimerInt we should see an interrupt */
 146     curr = in_Timer();
 147     next = curr + 5.0 * CLK;
 148     out_TimerInt(next);
 149     for (cnt = 0; ; ) {
 150         clock_step(1 * NANOSECONDS_PER_SECOND);
 151         prev = curr;
 152         curr = in_Timer();
 153         diff = (curr-prev) & 0xffffffffu;
 154         if (diff < from || diff > to) {
 155             fatal("Invalid diff %u (%u-%u)\n", diff, from, to);
 156         }
 157         if (cnt < 3 && curr > next) {
 158             if ((in_IntrStatus() & 0x4000) == 0) {
 159                 fatal("we should have an interrupt here!\n");
 160             }
 161             out_IntrStatus(0x4000);
 162             next = curr + 5.0 * CLK;
 163             out_TimerInt(next);
 164             if (++cnt == 3) {
 165                 out_TimerInt(1);
 166             }
 167         /* Test 5. Second time we pass from 0 should see an interrupt */
 168         } else if (cnt >= 3 && curr < prev) {
 169             /* here we should have an interrupt */
 170             if ((in_IntrStatus() & 0x4000) == 0) {
 171                 fatal("we should have an interrupt here!\n");
 172             }
 173             out_IntrStatus(0x4000);
 174             if (++cnt == 5) {
 175                 break;
 176             }
 177         }
 178     }
 179
 180     g_test_message("Everythink is ok!\n");
 181 }
 182
 183
 184 static void test_init(void)
 185 {
 186     uint64_t barsize;
 187
 188     dev = get_device();
 189
 190     dev_base = qpci_iomap(dev, 0, &barsize);
 191
 192     g_assert(dev_base != NULL);
 193
 194     qpci_device_enable(dev);
 195
 196     test_timer();
 197 }
 198
 199 int main(int argc, char **argv)
 200 {
 201     int ret;
 202
 203     g_test_init(&argc, &argv, NULL);
 204     qtest_add_func("/rtl8139/nop", nop);
 205     qtest_add_func("/rtl8139/timer", test_init);
 206
 207     qtest_start("-device rtl8139");
 208     ret = g_test_run();
 209
 210     qtest_end();
 211
 212     return ret;
 213 }