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 <glib.h>
  11 #include <string.h>
  12 #include "libqtest.h"
  13 #include "libqos/pci-pc.h"
  14 #include "qemu/osdep.h"
  15 #include "qemu/timer.h"
  16 #include "qemu-common.h"
  17
  18 /* Tests only initialization so far. TODO: Replace with functional tests */
  19 static void nop(void)
  20 {
  21 }
  22
  23 #define CLK 33000000
  24
  25 static QPCIBus *pcibus;
  26 static QPCIDevice *dev;
  27 static void *dev_base;
  28
  29 static void save_fn(QPCIDevice *dev, int devfn, void *data)
  30 {
  31     QPCIDevice **pdev = (QPCIDevice **) data;
  32
  33     *pdev = dev;
  34 }
  35
  36 static QPCIDevice *get_device(void)
  37 {
  38     QPCIDevice *dev;
  39
  40     pcibus = qpci_init_pc();
  41     qpci_device_foreach(pcibus, 0x10ec, 0x8139, save_fn, &dev);
  42     g_assert(dev != NULL);
  43
  44     return dev;
  45 }
  46
  47 #define PORT(name, len, val) \
  48 static unsigned __attribute__((unused)) in_##name(void) \
  49 { \
  50     unsigned res = qpci_io_read##len(dev, dev_base+(val)); \
  51     g_test_message("*%s -> %x\n", #name, res); \
  52     return res; \
  53 } \
  54 static void out_##name(unsigned v) \
  55 { \
  56     g_test_message("%x -> *%s\n", v, #name); \
  57     qpci_io_write##len(dev, dev_base+(val), v); \
  58 }
  59
  60 PORT(Timer, l, 0x48)
  61 PORT(IntrMask, w, 0x3c)
  62 PORT(IntrStatus, w, 0x3E)
  63 PORT(TimerInt, l, 0x54)
  64
  65 #define fatal(...) do { g_test_message(__VA_ARGS__); g_assert(0); } while (0)
  66
  67 static void test_timer(void)
  68 {
  69     const unsigned from = 0.95 * CLK;
  70     const unsigned to = 1.6 * CLK;
  71     unsigned prev, curr, next;
  72     unsigned cnt, diff;
  73
  74     out_IntrMask(0);
  75
  76     in_IntrStatus();
  77     in_Timer();
  78     in_Timer();
  79
  80     /* Test 1. test counter continue and continue */
  81     out_TimerInt(0); /* disable timer */
  82     out_IntrStatus(0x4000);
  83     out_Timer(12345); /* reset timer to 0 */
  84     curr = in_Timer();
  85     if (curr > 0.1 * CLK) {
  86         fatal("time too big %u\n", curr);
  87     }
  88     for (cnt = 0; ; ) {
  89         clock_step(1 * NANOSECONDS_PER_SECOND);
  90         prev = curr;
  91         curr = in_Timer();
  92
  93         /* test skip is in a specific range */
  94         diff = (curr-prev) & 0xffffffffu;
  95         if (diff < from || diff > to) {
  96             fatal("Invalid diff %u (%u-%u)\n", diff, from, to);
  97         }
  98         if (curr < prev && ++cnt == 3) {
  99             break;
 100         }
 101     }
 102
 103     /* Test 2. Check we didn't get an interrupt with TimerInt == 0 */
 104     if (in_IntrStatus() & 0x4000) {
 105         fatal("got an interrupt\n");
 106     }
 107
 108     /* Test 3. Setting TimerInt to 1 and Timer to 0 get interrupt */
 109     out_TimerInt(1);
 110     out_Timer(0);
 111     clock_step(40);
 112     if ((in_IntrStatus() & 0x4000) == 0) {
 113         fatal("we should have an interrupt here!\n");
 114     }
 115
 116     /* Test 3. Check acknowledge */
 117     out_IntrStatus(0x4000);
 118     if (in_IntrStatus() & 0x4000) {
 119         fatal("got an interrupt\n");
 120     }
 121
 122     /* Test. Status set after Timer reset */
 123     out_Timer(0);
 124     out_TimerInt(0);
 125     out_IntrStatus(0x4000);
 126     curr = in_Timer();
 127     out_TimerInt(curr + 0.5 * CLK);
 128     clock_step(1 * NANOSECONDS_PER_SECOND);
 129     out_Timer(0);
 130     if ((in_IntrStatus() & 0x4000) == 0) {
 131         fatal("we should have an interrupt here!\n");
 132     }
 133
 134     /* Test. Status set after TimerInt reset */
 135     out_Timer(0);
 136     out_TimerInt(0);
 137     out_IntrStatus(0x4000);
 138     curr = in_Timer();
 139     out_TimerInt(curr + 0.5 * CLK);
 140     clock_step(1 * NANOSECONDS_PER_SECOND);
 141     out_TimerInt(0);
 142     if ((in_IntrStatus() & 0x4000) == 0) {
 143         fatal("we should have an interrupt here!\n");
 144     }
 145
 146     /* Test 4. Increment TimerInt we should see an interrupt */
 147     curr = in_Timer();
 148     next = curr + 5.0 * CLK;
 149     out_TimerInt(next);
 150     for (cnt = 0; ; ) {
 151         clock_step(1 * NANOSECONDS_PER_SECOND);
 152         prev = curr;
 153         curr = in_Timer();
 154         diff = (curr-prev) & 0xffffffffu;
 155         if (diff < from || diff > to) {
 156             fatal("Invalid diff %u (%u-%u)\n", diff, from, to);
 157         }
 158         if (cnt < 3 && curr > next) {
 159             if ((in_IntrStatus() & 0x4000) == 0) {
 160                 fatal("we should have an interrupt here!\n");
 161             }
 162             out_IntrStatus(0x4000);
 163             next = curr + 5.0 * CLK;
 164             out_TimerInt(next);
 165             if (++cnt == 3) {
 166                 out_TimerInt(1);
 167             }
 168         /* Test 5. Second time we pass from 0 should see an interrupt */
 169         } else if (cnt >= 3 && curr < prev) {
 170             /* here we should have an interrupt */
 171             if ((in_IntrStatus() & 0x4000) == 0) {
 172                 fatal("we should have an interrupt here!\n");
 173             }
 174             out_IntrStatus(0x4000);
 175             if (++cnt == 5) {
 176                 break;
 177             }
 178         }
 179     }
 180
 181     g_test_message("Everythink is ok!\n");
 182 }
 183
 184
 185 static void test_init(void)
 186 {
 187     uint64_t barsize;
 188
 189     dev = get_device();
 190
 191     dev_base = qpci_iomap(dev, 0, &barsize);
 192
 193     g_assert(dev_base != NULL);
 194
 195     qpci_device_enable(dev);
 196
 197     test_timer();
 198 }
 199
 200 int main(int argc, char **argv)
 201 {
 202     int ret;
 203
 204     g_test_init(&argc, &argv, NULL);
 205     qtest_add_func("/rtl8139/nop", nop);
 206     qtest_add_func("/rtl8139/timer", test_init);
 207
 208     qtest_start("-device rtl8139");
 209     ret = g_test_run();
 210
 211     qtest_end();
 212
 213     return ret;
 214 }