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