tests/e1000e-test.c

   1  /*
   2  * QTest testcase for e1000e NIC
   3  *
   4  * Copyright (c) 2015 Ravello Systems LTD (http://ravellosystems.com)
   5  * Developed by Daynix Computing LTD (http://www.daynix.com)
   6  *
   7  * Authors:
   8  * Dmitry Fleytman <dmitry@daynix.com>
   9  * Leonid Bloch <leonid@daynix.com>
  10  * Yan Vugenfirer <yan@daynix.com>
  11  *
  12  * This library is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU Lesser General Public
  14  * License as published by the Free Software Foundation; either
  15  * version 2 of the License, or (at your option) any later version.
  16  *
  17  * This library is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  20  * Lesser General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Lesser General Public
  23  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  24  */
  25
  26
  27 #include "qemu/osdep.h"
  28 #include "libqtest.h"
  29 #include "qemu-common.h"
  30 #include "libqos/pci-pc.h"
  31 #include "qemu/sockets.h"
  32 #include "qemu/iov.h"
  33 #include "qemu/bitops.h"
  34 #include "libqos/malloc.h"
  35 #include "libqos/malloc-pc.h"
  36 #include "libqos/malloc-generic.h"
  37
  38 #define E1000E_IMS      (0x00d0)
  39
  40 #define E1000E_STATUS   (0x0008)
  41 #define E1000E_STATUS_LU BIT(1)
  42 #define E1000E_STATUS_ASDV1000 BIT(9)
  43
  44 #define E1000E_CTRL     (0x0000)
  45 #define E1000E_CTRL_RESET BIT(26)
  46
  47 #define E1000E_RCTL     (0x0100)
  48 #define E1000E_RCTL_EN  BIT(1)
  49 #define E1000E_RCTL_UPE BIT(3)
  50 #define E1000E_RCTL_MPE BIT(4)
  51
  52 #define E1000E_RFCTL     (0x5008)
  53 #define E1000E_RFCTL_EXTEN  BIT(15)
  54
  55 #define E1000E_TCTL     (0x0400)
  56 #define E1000E_TCTL_EN  BIT(1)
  57
  58 #define E1000E_CTRL_EXT             (0x0018)
  59 #define E1000E_CTRL_EXT_DRV_LOAD    BIT(28)
  60 #define E1000E_CTRL_EXT_TXLSFLOW    BIT(22)
  61
  62 #define E1000E_RX0_MSG_ID           (0)
  63 #define E1000E_TX0_MSG_ID           (1)
  64 #define E1000E_OTHER_MSG_ID         (2)
  65
  66 #define E1000E_IVAR                 (0x00E4)
  67 #define E1000E_IVAR_TEST_CFG        ((E1000E_RX0_MSG_ID << 0)    | BIT(3)  | \
  68                                      (E1000E_TX0_MSG_ID << 8)    | BIT(11) | \
  69                                      (E1000E_OTHER_MSG_ID << 16) | BIT(19) | \
  70                                      BIT(31))
  71
  72 #define E1000E_RING_LEN             (0x1000)
  73 #define E1000E_TXD_LEN              (16)
  74 #define E1000E_RXD_LEN              (16)
  75
  76 #define E1000E_TDBAL    (0x3800)
  77 #define E1000E_TDBAH    (0x3804)
  78 #define E1000E_TDLEN    (0x3808)
  79 #define E1000E_TDH      (0x3810)
  80 #define E1000E_TDT      (0x3818)
  81
  82 #define E1000E_RDBAL    (0x2800)
  83 #define E1000E_RDBAH    (0x2804)
  84 #define E1000E_RDLEN    (0x2808)
  85 #define E1000E_RDH      (0x2810)
  86 #define E1000E_RDT      (0x2818)
  87
  88 typedef struct e1000e_device {
  89     QPCIDevice *pci_dev;
  90     void *mac_regs;
  91
  92     uint64_t tx_ring;
  93     uint64_t rx_ring;
  94 } e1000e_device;
  95
  96 static int test_sockets[2];
  97 static QGuestAllocator *test_alloc;
  98 static QPCIBus *test_bus;
  99
 100 static void e1000e_pci_foreach_callback(QPCIDevice *dev, int devfn, void *data)
 101 {
 102     *(QPCIDevice **) data = dev;
 103 }
 104
 105 static QPCIDevice *e1000e_device_find(QPCIBus *bus)
 106 {
 107     static const int e1000e_vendor_id = 0x8086;
 108     static const int e1000e_dev_id = 0x10D3;
 109
 110     QPCIDevice *e1000e_dev = NULL;
 111
 112     qpci_device_foreach(bus, e1000e_vendor_id, e1000e_dev_id,
 113         e1000e_pci_foreach_callback, &e1000e_dev);
 114
 115     g_assert_nonnull(e1000e_dev);
 116
 117     return e1000e_dev;
 118 }
 119
 120 static void e1000e_macreg_write(e1000e_device *d, uint32_t reg, uint32_t val)
 121 {
 122     qpci_io_writel(d->pci_dev, d->mac_regs + reg, val);
 123 }
 124
 125 static uint32_t e1000e_macreg_read(e1000e_device *d, uint32_t reg)
 126 {
 127     return qpci_io_readl(d->pci_dev, d->mac_regs + reg);
 128 }
 129
 130 static void e1000e_device_init(QPCIBus *bus, e1000e_device *d)
 131 {
 132     uint32_t val;
 133
 134     d->pci_dev = e1000e_device_find(bus);
 135
 136     /* Enable the device */
 137     qpci_device_enable(d->pci_dev);
 138
 139     /* Map BAR0 (mac registers) */
 140     d->mac_regs = qpci_iomap(d->pci_dev, 0, NULL);
 141     g_assert_nonnull(d->mac_regs);
 142
 143     /* Reset the device */
 144     val = e1000e_macreg_read(d, E1000E_CTRL);
 145     e1000e_macreg_write(d, E1000E_CTRL, val | E1000E_CTRL_RESET);
 146
 147     /* Enable and configure MSI-X */
 148     qpci_msix_enable(d->pci_dev);
 149     e1000e_macreg_write(d, E1000E_IVAR, E1000E_IVAR_TEST_CFG);
 150
 151     /* Check the device status - link and speed */
 152     val = e1000e_macreg_read(d, E1000E_STATUS);
 153     g_assert_cmphex(val & (E1000E_STATUS_LU | E1000E_STATUS_ASDV1000),
 154         ==, E1000E_STATUS_LU | E1000E_STATUS_ASDV1000);
 155
 156     /* Initialize TX/RX logic */
 157     e1000e_macreg_write(d, E1000E_RCTL, 0);
 158     e1000e_macreg_write(d, E1000E_TCTL, 0);
 159
 160     /* Notify the device that the driver is ready */
 161     val = e1000e_macreg_read(d, E1000E_CTRL_EXT);
 162     e1000e_macreg_write(d, E1000E_CTRL_EXT,
 163         val | E1000E_CTRL_EXT_DRV_LOAD | E1000E_CTRL_EXT_TXLSFLOW);
 164
 165     /* Allocate and setup TX ring */
 166     d->tx_ring = guest_alloc(test_alloc, E1000E_RING_LEN);
 167     g_assert(d->tx_ring != 0);
 168
 169     e1000e_macreg_write(d, E1000E_TDBAL, (uint32_t) d->tx_ring);
 170     e1000e_macreg_write(d, E1000E_TDBAH, (uint32_t) (d->tx_ring >> 32));
 171     e1000e_macreg_write(d, E1000E_TDLEN, E1000E_RING_LEN);
 172     e1000e_macreg_write(d, E1000E_TDT, 0);
 173     e1000e_macreg_write(d, E1000E_TDH, 0);
 174
 175     /* Enable transmit */
 176     e1000e_macreg_write(d, E1000E_TCTL, E1000E_TCTL_EN);
 177
 178     /* Allocate and setup RX ring */
 179     d->rx_ring = guest_alloc(test_alloc, E1000E_RING_LEN);
 180     g_assert(d->rx_ring != 0);
 181
 182     e1000e_macreg_write(d, E1000E_RDBAL, (uint32_t)d->rx_ring);
 183     e1000e_macreg_write(d, E1000E_RDBAH, (uint32_t)(d->rx_ring >> 32));
 184     e1000e_macreg_write(d, E1000E_RDLEN, E1000E_RING_LEN);
 185     e1000e_macreg_write(d, E1000E_RDT, 0);
 186     e1000e_macreg_write(d, E1000E_RDH, 0);
 187
 188     /* Enable receive */
 189     e1000e_macreg_write(d, E1000E_RFCTL, E1000E_RFCTL_EXTEN);
 190     e1000e_macreg_write(d, E1000E_RCTL, E1000E_RCTL_EN  |
 191                                         E1000E_RCTL_UPE |
 192                                         E1000E_RCTL_MPE);
 193
 194     /* Enable all interrupts */
 195     e1000e_macreg_write(d, E1000E_IMS, 0xFFFFFFFF);
 196 }
 197
 198 static void e1000e_tx_ring_push(e1000e_device *d, void *descr)
 199 {
 200     uint32_t tail = e1000e_macreg_read(d, E1000E_TDT);
 201     uint32_t len = e1000e_macreg_read(d, E1000E_TDLEN) / E1000E_TXD_LEN;
 202
 203     memwrite(d->tx_ring + tail * E1000E_TXD_LEN, descr, E1000E_TXD_LEN);
 204     e1000e_macreg_write(d, E1000E_TDT, (tail + 1) % len);
 205
 206     /* Read WB data for the packet transmitted */
 207     memread(d->tx_ring + tail * E1000E_TXD_LEN, descr, E1000E_TXD_LEN);
 208 }
 209
 210 static void e1000e_rx_ring_push(e1000e_device *d, void *descr)
 211 {
 212     uint32_t tail = e1000e_macreg_read(d, E1000E_RDT);
 213     uint32_t len = e1000e_macreg_read(d, E1000E_RDLEN) / E1000E_RXD_LEN;
 214
 215     memwrite(d->rx_ring + tail * E1000E_RXD_LEN, descr, E1000E_RXD_LEN);
 216     e1000e_macreg_write(d, E1000E_RDT, (tail + 1) % len);
 217
 218     /* Read WB data for the packet received */
 219     memread(d->rx_ring + tail * E1000E_RXD_LEN, descr, E1000E_RXD_LEN);
 220 }
 221
 222 static void e1000e_wait_isr(e1000e_device *d, uint16_t msg_id)
 223 {
 224     guint64 end_time = g_get_monotonic_time() + 5 * G_TIME_SPAN_SECOND;
 225
 226     do {
 227         if (qpci_msix_pending(d->pci_dev, msg_id)) {
 228             return;
 229         }
 230         clock_step(10000);
 231     } while (g_get_monotonic_time() < end_time);
 232
 233     g_error("Timeout expired");
 234 }
 235
 236 static void e1000e_send_verify(e1000e_device *d)
 237 {
 238     struct {
 239         uint64_t buffer_addr;
 240         union {
 241             uint32_t data;
 242             struct {
 243                 uint16_t length;
 244                 uint8_t cso;
 245                 uint8_t cmd;
 246             } flags;
 247         } lower;
 248         union {
 249             uint32_t data;
 250             struct {
 251                 uint8_t status;
 252                 uint8_t css;
 253                 uint16_t special;
 254             } fields;
 255         } upper;
 256     } descr;
 257
 258     static const uint32_t dtyp_data = BIT(20);
 259     static const uint32_t dtyp_ext  = BIT(29);
 260     static const uint32_t dcmd_rs   = BIT(27);
 261     static const uint32_t dcmd_eop  = BIT(24);
 262     static const uint32_t dsta_dd   = BIT(0);
 263     static const int data_len = 64;
 264     char buffer[64];
 265     int ret;
 266     uint32_t recv_len;
 267
 268     /* Prepare test data buffer */
 269     uint64_t data = guest_alloc(test_alloc, data_len);
 270     memwrite(data, "TEST", 5);
 271
 272     /* Prepare TX descriptor */
 273     memset(&descr, 0, sizeof(descr));
 274     descr.buffer_addr = cpu_to_le64(data);
 275     descr.lower.data = cpu_to_le32(dcmd_rs   |
 276                                    dcmd_eop  |
 277                                    dtyp_ext  |
 278                                    dtyp_data |
 279                                    data_len);
 280
 281     /* Put descriptor to the ring */
 282     e1000e_tx_ring_push(d, &descr);
 283
 284     /* Wait for TX WB interrupt */
 285     e1000e_wait_isr(d, E1000E_TX0_MSG_ID);
 286
 287     /* Check DD bit */
 288     g_assert_cmphex(le32_to_cpu(descr.upper.data) & dsta_dd, ==, dsta_dd);
 289
 290     /* Check data sent to the backend */
 291     ret = qemu_recv(test_sockets[0], &recv_len, sizeof(recv_len), 0);
 292     g_assert_cmpint(ret, == , sizeof(recv_len));
 293     qemu_recv(test_sockets[0], buffer, 64, 0);
 294     g_assert_cmpstr(buffer, == , "TEST");
 295
 296     /* Free test data buffer */
 297     guest_free(test_alloc, data);
 298 }
 299
 300 static void e1000e_receive_verify(e1000e_device *d)
 301 {
 302     union {
 303         struct {
 304             uint64_t buffer_addr;
 305             uint64_t reserved;
 306         } read;
 307         struct {
 308             struct {
 309                 uint32_t mrq;
 310                 union {
 311                     uint32_t rss;
 312                     struct {
 313                         uint16_t ip_id;
 314                         uint16_t csum;
 315                     } csum_ip;
 316                 } hi_dword;
 317             } lower;
 318             struct {
 319                 uint32_t status_error;
 320                 uint16_t length;
 321                 uint16_t vlan;
 322             } upper;
 323         } wb;
 324     } descr;
 325
 326     static const uint32_t esta_dd = BIT(0);
 327
 328     char test[] = "TEST";
 329     int len = htonl(sizeof(test));
 330     struct iovec iov[] = {
 331         {
 332             .iov_base = &len,
 333             .iov_len = sizeof(len),
 334         },{
 335             .iov_base = test,
 336             .iov_len = sizeof(test),
 337         },
 338     };
 339
 340     static const int data_len = 64;
 341     char buffer[64];
 342     int ret;
 343
 344     /* Send a dummy packet to device's socket*/
 345     ret = iov_send(test_sockets[0], iov, 2, 0, sizeof(len) + sizeof(test));
 346     g_assert_cmpint(ret, == , sizeof(test) + sizeof(len));
 347
 348     /* Prepare test data buffer */
 349     uint64_t data = guest_alloc(test_alloc, data_len);
 350
 351     /* Prepare RX descriptor */
 352     memset(&descr, 0, sizeof(descr));
 353     descr.read.buffer_addr = cpu_to_le64(data);
 354
 355     /* Put descriptor to the ring */
 356     e1000e_rx_ring_push(d, &descr);
 357
 358     /* Wait for TX WB interrupt */
 359     e1000e_wait_isr(d, E1000E_RX0_MSG_ID);
 360
 361     /* Check DD bit */
 362     g_assert_cmphex(le32_to_cpu(descr.wb.upper.status_error) &
 363         esta_dd, ==, esta_dd);
 364
 365     /* Check data sent to the backend */
 366     memread(data, buffer, sizeof(buffer));
 367     g_assert_cmpstr(buffer, == , "TEST");
 368
 369     /* Free test data buffer */
 370     guest_free(test_alloc, data);
 371 }
 372
 373 static void e1000e_device_clear(QPCIBus *bus, e1000e_device *d)
 374 {
 375     qpci_iounmap(d->pci_dev, d->mac_regs);
 376     qpci_msix_disable(d->pci_dev);
 377 }
 378
 379 static void data_test_init(e1000e_device *d)
 380 {
 381     char *cmdline;
 382
 383     int ret = socketpair(PF_UNIX, SOCK_STREAM, 0, test_sockets);
 384     g_assert_cmpint(ret, != , -1);
 385
 386     cmdline = g_strdup_printf("-netdev socket,fd=%d,id=hs0 "
 387                               "-device e1000e,netdev=hs0", test_sockets[1]);
 388     g_assert_nonnull(cmdline);
 389
 390     qtest_start(cmdline);
 391     g_free(cmdline);
 392
 393     test_bus = qpci_init_pc(NULL);
 394     g_assert_nonnull(test_bus);
 395
 396     test_alloc = pc_alloc_init();
 397     g_assert_nonnull(test_alloc);
 398
 399     e1000e_device_init(test_bus, d);
 400 }
 401
 402 static void data_test_clear(e1000e_device *d)
 403 {
 404     e1000e_device_clear(test_bus, d);
 405     close(test_sockets[0]);
 406     pc_alloc_uninit(test_alloc);
 407     qpci_free_pc(test_bus);
 408     qtest_end();
 409 }
 410
 411 static void test_e1000e_init(gconstpointer data)
 412 {
 413     e1000e_device d;
 414
 415     data_test_init(&d);
 416     data_test_clear(&d);
 417 }
 418
 419 static void test_e1000e_tx(gconstpointer data)
 420 {
 421     e1000e_device d;
 422
 423     data_test_init(&d);
 424     e1000e_send_verify(&d);
 425     data_test_clear(&d);
 426 }
 427
 428 static void test_e1000e_rx(gconstpointer data)
 429 {
 430     e1000e_device d;
 431
 432     data_test_init(&d);
 433     e1000e_receive_verify(&d);
 434     data_test_clear(&d);
 435 }
 436
 437 static void test_e1000e_multiple_transfers(gconstpointer data)
 438 {
 439     static const long iterations = 4 * 1024;
 440     long i;
 441
 442     e1000e_device d;
 443
 444     data_test_init(&d);
 445
 446     for (i = 0; i < iterations; i++) {
 447         e1000e_send_verify(&d);
 448         e1000e_receive_verify(&d);
 449     }
 450
 451     data_test_clear(&d);
 452 }
 453
 454 static void test_e1000e_hotplug(gconstpointer data)
 455 {
 456     static const uint8_t slot = 0x06;
 457
 458     qtest_start("-device e1000e");
 459
 460     qpci_plug_device_test("e1000e", "e1000e_net", slot, NULL);
 461     qpci_unplug_acpi_device_test("e1000e_net", slot);
 462
 463     qtest_end();
 464 }
 465
 466 int main(int argc, char **argv)
 467 {
 468     g_test_init(&argc, &argv, NULL);
 469
 470     qtest_add_data_func("e1000e/init", NULL, test_e1000e_init);
 471     qtest_add_data_func("e1000e/tx", NULL, test_e1000e_tx);
 472     qtest_add_data_func("e1000e/rx", NULL, test_e1000e_rx);
 473     qtest_add_data_func("e1000e/multiple_transfers", NULL,
 474         test_e1000e_multiple_transfers);
 475     qtest_add_data_func("e1000e/hotplug", NULL, test_e1000e_hotplug);
 476
 477     return g_test_run();
 478 }