test: Move qtests to a separate directory

The tests directory itself is pretty overcrowded, and it's hard to
see which test belongs to which test subsystem (unit, qtest, ...).
Let's move the qtests to a separate folder for more clarity.

Message-Id: <20191218103059.11729-6-thuth@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/qtest/rtl8139-test.c

@@ -0,0 +1,211 @@
+/*
+ * 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"
+#include "qemu-common.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;
+}