qemu

rtl8139-test.c (5213B)

---

 /*
  * QTest testcase for Realtek 8139 NIC
  *
  * Copyright (c) 2013-2014 SUSE LINUX Products GmbH
  *
  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  * See the COPYING file in the top-level directory.
  */
 
 #include "qemu/osdep.h"
 #include "libqtest-single.h"
 #include "libqos/pci-pc.h"
 #include "qemu/timer.h"
 
 /* Tests only initialization so far. TODO: Replace with functional tests */
 static void nop(void)
 {
 }
 
 #define CLK 33333333
 
 static QPCIBus *pcibus;
 static QPCIDevice *dev;
 static QPCIBar dev_bar;
 
 static void save_fn(QPCIDevice *dev, int devfn, void *data)
 {
     QPCIDevice **pdev = (QPCIDevice **) data;
 
     *pdev = dev;
 }
 
 static QPCIDevice *get_device(void)
 {
     QPCIDevice *dev;
 
     pcibus = qpci_new_pc(global_qtest, NULL);
     qpci_device_foreach(pcibus, 0x10ec, 0x8139, save_fn, &dev);
     g_assert(dev != NULL);
 
     return dev;
 }
 
 #define PORT(name, len, val) \
 static unsigned __attribute__((unused)) in_##name(void) \
 { \
     unsigned res = qpci_io_read##len(dev, dev_bar, (val));     \
     g_test_message("*%s -> %x", #name, res); \
     return res; \
 } \
 static void out_##name(unsigned v) \
 { \
     g_test_message("%x -> *%s", v, #name); \
     qpci_io_write##len(dev, dev_bar, (val), v);        \
 }
 
 PORT(Timer, l, 0x48)
 PORT(IntrMask, w, 0x3c)
 PORT(IntrStatus, w, 0x3E)
 PORT(TimerInt, l, 0x54)
 
 #define fatal(...) do { g_test_message(__VA_ARGS__); g_assert(0); } while (0)
 
 static void test_timer(void)
 {
     const unsigned from = 0.95 * CLK;
     const unsigned to = 1.6 * CLK;
     unsigned prev, curr, next;
     unsigned cnt, diff;
 
     out_IntrMask(0);
 
     in_IntrStatus();
     in_Timer();
     in_Timer();
 
     /* Test 1. test counter continue and continue */
     out_TimerInt(0); /* disable timer */
     out_IntrStatus(0x4000);
     out_Timer(12345); /* reset timer to 0 */
     curr = in_Timer();
     if (curr > 0.1 * CLK) {
         fatal("time too big %u\n", curr);
     }
     for (cnt = 0; ; ) {
         clock_step(1 * NANOSECONDS_PER_SECOND);
         prev = curr;
         curr = in_Timer();
 
         /* test skip is in a specific range */
         diff = (curr-prev) & 0xffffffffu;
         if (diff < from || diff > to) {
             fatal("Invalid diff %u (%u-%u)\n", diff, from, to);
         }
         if (curr < prev && ++cnt == 3) {
             break;
         }
     }
 
     /* Test 2. Check we didn't get an interrupt with TimerInt == 0 */
     if (in_IntrStatus() & 0x4000) {
         fatal("got an interrupt\n");
     }
 
     /* Test 3. Setting TimerInt to 1 and Timer to 0 get interrupt */
     out_TimerInt(1);
     out_Timer(0);
     clock_step(40);
     if ((in_IntrStatus() & 0x4000) == 0) {
         fatal("we should have an interrupt here!\n");
     }
 
     /* Test 3. Check acknowledge */
     out_IntrStatus(0x4000);
     if (in_IntrStatus() & 0x4000) {
         fatal("got an interrupt\n");
     }
 
     /* Test. Status set after Timer reset */
     out_Timer(0);
     out_TimerInt(0);
     out_IntrStatus(0x4000);
     curr = in_Timer();
     out_TimerInt(curr + 0.5 * CLK);
     clock_step(1 * NANOSECONDS_PER_SECOND);
     out_Timer(0);
     if ((in_IntrStatus() & 0x4000) == 0) {
         fatal("we should have an interrupt here!\n");
     }
 
     /* Test. Status set after TimerInt reset */
     out_Timer(0);
     out_TimerInt(0);
     out_IntrStatus(0x4000);
     curr = in_Timer();
     out_TimerInt(curr + 0.5 * CLK);
     clock_step(1 * NANOSECONDS_PER_SECOND);
     out_TimerInt(0);
     if ((in_IntrStatus() & 0x4000) == 0) {
         fatal("we should have an interrupt here!\n");
     }
 
     /* Test 4. Increment TimerInt we should see an interrupt */
     curr = in_Timer();
     next = curr + 5.0 * CLK;
     out_TimerInt(next);
     for (cnt = 0; ; ) {
         clock_step(1 * NANOSECONDS_PER_SECOND);
         prev = curr;
         curr = in_Timer();
         diff = (curr-prev) & 0xffffffffu;
         if (diff < from || diff > to) {
             fatal("Invalid diff %u (%u-%u)\n", diff, from, to);
         }
         if (cnt < 3 && curr > next) {
             if ((in_IntrStatus() & 0x4000) == 0) {
                 fatal("we should have an interrupt here!\n");
             }
             out_IntrStatus(0x4000);
             next = curr + 5.0 * CLK;
             out_TimerInt(next);
             if (++cnt == 3) {
                 out_TimerInt(1);
             }
         /* Test 5. Second time we pass from 0 should see an interrupt */
         } else if (cnt >= 3 && curr < prev) {
             /* here we should have an interrupt */
             if ((in_IntrStatus() & 0x4000) == 0) {
                 fatal("we should have an interrupt here!\n");
             }
             out_IntrStatus(0x4000);
             if (++cnt == 5) {
                 break;
             }
         }
     }
 
     g_test_message("Everythink is ok!");
 }
 
 
 static void test_init(void)
 {
     uint64_t barsize;
 
     dev = get_device();
 
     dev_bar = qpci_iomap(dev, 0, &barsize);
 
     qpci_device_enable(dev);
 
     test_timer();
 }
 
 int main(int argc, char **argv)
 {
     int ret;
 
     qtest_start("-device rtl8139");
 
     g_test_init(&argc, &argv, NULL);
     qtest_add_func("/rtl8139/nop", nop);
     qtest_add_func("/rtl8139/timer", test_init);
 
     ret = g_test_run();
 
     qtest_end();
 
     return ret;
 }