tests/i440fx-test.c

   1 /*
   2  * qtest I440FX test case
   3  *
   4  * Copyright IBM, Corp. 2012-2013
   5  * Copyright Red Hat, Inc. 2013
   6  *
   7  * Authors:
   8  *  Anthony Liguori   <aliguori@us.ibm.com>
   9  *  Laszlo Ersek      <lersek@redhat.com>
  10  *
  11  * This work is licensed under the terms of the GNU GPL, version 2 or later.
  12  * See the COPYING file in the top-level directory.
  13  */
  14
  15 #include "qemu/osdep.h"
  16
  17 #include "libqtest.h"
  18 #include "libqos/pci.h"
  19 #include "libqos/pci-pc.h"
  20 #include "hw/pci/pci_regs.h"
  21
  22 #define BROKEN 1
  23
  24 typedef struct TestData
  25 {
  26     int num_cpus;
  27 } TestData;
  28
  29 typedef struct FirmwareTestFixture {
  30     /* decides whether we're testing -bios or -pflash */
  31     bool is_bios;
  32 } FirmwareTestFixture;
  33
  34 static QPCIBus *test_start_get_bus(const TestData *s)
  35 {
  36     char *cmdline;
  37
  38     cmdline = g_strdup_printf("-smp %d", s->num_cpus);
  39     qtest_start(cmdline);
  40     g_free(cmdline);
  41     return qpci_init_pc();
  42 }
  43
  44 static void test_i440fx_defaults(gconstpointer opaque)
  45 {
  46     const TestData *s = opaque;
  47     QPCIBus *bus;
  48     QPCIDevice *dev;
  49     uint32_t value;
  50
  51     bus = test_start_get_bus(s);
  52     dev = qpci_device_find(bus, QPCI_DEVFN(0, 0));
  53     g_assert(dev != NULL);
  54
  55     /* 3.2.2 */
  56     g_assert_cmpint(qpci_config_readw(dev, PCI_VENDOR_ID), ==, 0x8086);
  57     /* 3.2.3 */
  58     g_assert_cmpint(qpci_config_readw(dev, PCI_DEVICE_ID), ==, 0x1237);
  59 #ifndef BROKEN
  60     /* 3.2.4 */
  61     g_assert_cmpint(qpci_config_readw(dev, PCI_COMMAND), ==, 0x0006);
  62     /* 3.2.5 */
  63     g_assert_cmpint(qpci_config_readw(dev, PCI_STATUS), ==, 0x0280);
  64 #endif
  65     /* 3.2.7 */
  66     g_assert_cmpint(qpci_config_readb(dev, PCI_CLASS_PROG), ==, 0x00);
  67     g_assert_cmpint(qpci_config_readw(dev, PCI_CLASS_DEVICE), ==, 0x0600);
  68     /* 3.2.8 */
  69     g_assert_cmpint(qpci_config_readb(dev, PCI_LATENCY_TIMER), ==, 0x00);
  70     /* 3.2.9 */
  71     g_assert_cmpint(qpci_config_readb(dev, PCI_HEADER_TYPE), ==, 0x00);
  72     /* 3.2.10 */
  73     g_assert_cmpint(qpci_config_readb(dev, PCI_BIST), ==, 0x00);
  74
  75     /* 3.2.11 */
  76     value = qpci_config_readw(dev, 0x50); /* PMCCFG */
  77     if (s->num_cpus == 1) { /* WPE */
  78         g_assert(!(value & (1 << 15)));
  79     } else {
  80         g_assert((value & (1 << 15)));
  81     }
  82
  83     g_assert(!(value & (1 << 6))); /* EPTE */
  84
  85     /* 3.2.12 */
  86     g_assert_cmpint(qpci_config_readb(dev, 0x52), ==, 0x00); /* DETURBO */
  87     /* 3.2.13 */
  88 #ifndef BROKEN
  89     g_assert_cmpint(qpci_config_readb(dev, 0x53), ==, 0x80); /* DBC */
  90 #endif
  91     /* 3.2.14 */
  92     g_assert_cmpint(qpci_config_readb(dev, 0x54), ==, 0x00); /* AXC */
  93     /* 3.2.15 */
  94     g_assert_cmpint(qpci_config_readw(dev, 0x55), ==, 0x0000); /* DRT */
  95 #ifndef BROKEN
  96     /* 3.2.16 */
  97     g_assert_cmpint(qpci_config_readb(dev, 0x57), ==, 0x01); /* DRAMC */
  98     /* 3.2.17 */
  99     g_assert_cmpint(qpci_config_readb(dev, 0x58), ==, 0x10); /* DRAMT */
 100 #endif
 101     /* 3.2.18 */
 102     g_assert_cmpint(qpci_config_readb(dev, 0x59), ==, 0x00); /* PAM0 */
 103     g_assert_cmpint(qpci_config_readb(dev, 0x5A), ==, 0x00); /* PAM1 */
 104     g_assert_cmpint(qpci_config_readb(dev, 0x5B), ==, 0x00); /* PAM2 */
 105     g_assert_cmpint(qpci_config_readb(dev, 0x5C), ==, 0x00); /* PAM3 */
 106     g_assert_cmpint(qpci_config_readb(dev, 0x5D), ==, 0x00); /* PAM4 */
 107     g_assert_cmpint(qpci_config_readb(dev, 0x5E), ==, 0x00); /* PAM5 */
 108     g_assert_cmpint(qpci_config_readb(dev, 0x5F), ==, 0x00); /* PAM6 */
 109 #ifndef BROKEN
 110     /* 3.2.19 */
 111     g_assert_cmpint(qpci_config_readb(dev, 0x60), ==, 0x01); /* DRB0 */
 112     g_assert_cmpint(qpci_config_readb(dev, 0x61), ==, 0x01); /* DRB1 */
 113     g_assert_cmpint(qpci_config_readb(dev, 0x62), ==, 0x01); /* DRB2 */
 114     g_assert_cmpint(qpci_config_readb(dev, 0x63), ==, 0x01); /* DRB3 */
 115     g_assert_cmpint(qpci_config_readb(dev, 0x64), ==, 0x01); /* DRB4 */
 116     g_assert_cmpint(qpci_config_readb(dev, 0x65), ==, 0x01); /* DRB5 */
 117     g_assert_cmpint(qpci_config_readb(dev, 0x66), ==, 0x01); /* DRB6 */
 118     g_assert_cmpint(qpci_config_readb(dev, 0x67), ==, 0x01); /* DRB7 */
 119 #endif
 120     /* 3.2.20 */
 121     g_assert_cmpint(qpci_config_readb(dev, 0x68), ==, 0x00); /* FDHC */
 122     /* 3.2.21 */
 123     g_assert_cmpint(qpci_config_readb(dev, 0x70), ==, 0x00); /* MTT */
 124 #ifndef BROKEN
 125     /* 3.2.22 */
 126     g_assert_cmpint(qpci_config_readb(dev, 0x71), ==, 0x10); /* CLT */
 127 #endif
 128     /* 3.2.23 */
 129     g_assert_cmpint(qpci_config_readb(dev, 0x72), ==, 0x02); /* SMRAM */
 130     /* 3.2.24 */
 131     g_assert_cmpint(qpci_config_readb(dev, 0x90), ==, 0x00); /* ERRCMD */
 132     /* 3.2.25 */
 133     g_assert_cmpint(qpci_config_readb(dev, 0x91), ==, 0x00); /* ERRSTS */
 134     /* 3.2.26 */
 135     g_assert_cmpint(qpci_config_readb(dev, 0x93), ==, 0x00); /* TRC */
 136
 137     qtest_end();
 138 }
 139
 140 #define PAM_RE 1
 141 #define PAM_WE 2
 142
 143 static void pam_set(QPCIDevice *dev, int index, int flags)
 144 {
 145     int regno = 0x59 + (index / 2);
 146     uint8_t reg;
 147
 148     reg = qpci_config_readb(dev, regno);
 149     if (index & 1) {
 150         reg = (reg & 0x0F) | (flags << 4);
 151     } else {
 152         reg = (reg & 0xF0) | flags;
 153     }
 154     qpci_config_writeb(dev, regno, reg);
 155 }
 156
 157 static gboolean verify_area(uint32_t start, uint32_t end, uint8_t value)
 158 {
 159     uint32_t size = end - start + 1;
 160     gboolean ret = TRUE;
 161     uint8_t *data;
 162     int i;
 163
 164     data = g_malloc0(size);
 165     memread(start, data, size);
 166
 167     g_test_message("verify_area: data[0] = 0x%x", data[0]);
 168
 169     for (i = 0; i < size; i++) {
 170         if (data[i] != value) {
 171             ret = FALSE;
 172             break;
 173         }
 174     }
 175
 176     g_free(data);
 177
 178     return ret;
 179 }
 180
 181 static void write_area(uint32_t start, uint32_t end, uint8_t value)
 182 {
 183     uint32_t size = end - start + 1;
 184     uint8_t *data;
 185
 186     data = g_malloc(size);
 187     memset(data, value, size);
 188     memwrite(start, data, size);
 189
 190     g_free(data);
 191 }
 192
 193 static void test_i440fx_pam(gconstpointer opaque)
 194 {
 195     const TestData *s = opaque;
 196     QPCIBus *bus;
 197     QPCIDevice *dev;
 198     int i;
 199     static struct {
 200         uint32_t start;
 201         uint32_t end;
 202     } pam_area[] = {
 203         { 0, 0 },             /* Reserved */
 204         { 0xF0000, 0xFFFFF }, /* BIOS Area */
 205         { 0xC0000, 0xC3FFF }, /* Option ROM */
 206         { 0xC4000, 0xC7FFF }, /* Option ROM */
 207         { 0xC8000, 0xCBFFF }, /* Option ROM */
 208         { 0xCC000, 0xCFFFF }, /* Option ROM */
 209         { 0xD0000, 0xD3FFF }, /* Option ROM */
 210         { 0xD4000, 0xD7FFF }, /* Option ROM */
 211         { 0xD8000, 0xDBFFF }, /* Option ROM */
 212         { 0xDC000, 0xDFFFF }, /* Option ROM */
 213         { 0xE0000, 0xE3FFF }, /* BIOS Extension */
 214         { 0xE4000, 0xE7FFF }, /* BIOS Extension */
 215         { 0xE8000, 0xEBFFF }, /* BIOS Extension */
 216         { 0xEC000, 0xEFFFF }, /* BIOS Extension */
 217     };
 218
 219     bus = test_start_get_bus(s);
 220     dev = qpci_device_find(bus, QPCI_DEVFN(0, 0));
 221     g_assert(dev != NULL);
 222
 223     for (i = 0; i < ARRAY_SIZE(pam_area); i++) {
 224         if (pam_area[i].start == pam_area[i].end) {
 225             continue;
 226         }
 227
 228         g_test_message("Checking area 0x%05x..0x%05x",
 229                        pam_area[i].start, pam_area[i].end);
 230         /* Switch to RE for the area */
 231         pam_set(dev, i, PAM_RE);
 232         /* Verify the RAM is all zeros */
 233         g_assert(verify_area(pam_area[i].start, pam_area[i].end, 0));
 234
 235         /* Switch to WE for the area */
 236         pam_set(dev, i, PAM_RE | PAM_WE);
 237         /* Write out a non-zero mask to the full area */
 238         write_area(pam_area[i].start, pam_area[i].end, 0x42);
 239
 240 #ifndef BROKEN
 241         /* QEMU only supports a limited form of PAM */
 242
 243         /* Switch to !RE for the area */
 244         pam_set(dev, i, PAM_WE);
 245         /* Verify the area is not our mask */
 246         g_assert(!verify_area(pam_area[i].start, pam_area[i].end, 0x42));
 247 #endif
 248
 249         /* Verify the area is our new mask */
 250         g_assert(verify_area(pam_area[i].start, pam_area[i].end, 0x42));
 251
 252         /* Write out a new mask */
 253         write_area(pam_area[i].start, pam_area[i].end, 0x82);
 254
 255 #ifndef BROKEN
 256         /* QEMU only supports a limited form of PAM */
 257
 258         /* Verify the area is not our mask */
 259         g_assert(!verify_area(pam_area[i].start, pam_area[i].end, 0x82));
 260
 261         /* Switch to RE for the area */
 262         pam_set(dev, i, PAM_RE | PAM_WE);
 263 #endif
 264         /* Verify the area is our new mask */
 265         g_assert(verify_area(pam_area[i].start, pam_area[i].end, 0x82));
 266
 267         /* Reset area */
 268         pam_set(dev, i, 0);
 269
 270         /* Verify the area is not our new mask */
 271         g_assert(!verify_area(pam_area[i].start, pam_area[i].end, 0x82));
 272     }
 273     qtest_end();
 274 }
 275
 276 #define BLOB_SIZE ((size_t)65536)
 277 #define ISA_BIOS_MAXSZ ((size_t)(128 * 1024))
 278
 279 /* Create a blob file, and return its absolute pathname as a dynamically
 280  * allocated string.
 281  * The file is closed before the function returns.
 282  * In case of error, NULL is returned. The function prints the error message.
 283  */
 284 static char *create_blob_file(void)
 285 {
 286     int ret, fd;
 287     char *pathname;
 288     GError *error = NULL;
 289
 290     ret = -1;
 291     fd = g_file_open_tmp("blob_XXXXXX", &pathname, &error);
 292     if (fd == -1) {
 293         fprintf(stderr, "unable to create blob file: %s\n", error->message);
 294         g_error_free(error);
 295     } else {
 296         if (ftruncate(fd, BLOB_SIZE) == -1) {
 297             fprintf(stderr, "ftruncate(\"%s\", %zu): %s\n", pathname,
 298                     BLOB_SIZE, strerror(errno));
 299         } else {
 300             void *buf;
 301
 302             buf = mmap(NULL, BLOB_SIZE, PROT_WRITE, MAP_SHARED, fd, 0);
 303             if (buf == MAP_FAILED) {
 304                 fprintf(stderr, "mmap(\"%s\", %zu): %s\n", pathname, BLOB_SIZE,
 305                         strerror(errno));
 306             } else {
 307                 size_t i;
 308
 309                 for (i = 0; i < BLOB_SIZE; ++i) {
 310                     ((uint8_t *)buf)[i] = i;
 311                 }
 312                 munmap(buf, BLOB_SIZE);
 313                 ret = 0;
 314             }
 315         }
 316         close(fd);
 317         if (ret == -1) {
 318             unlink(pathname);
 319             g_free(pathname);
 320         }
 321     }
 322
 323     return ret == -1 ? NULL : pathname;
 324 }
 325
 326 static void test_i440fx_firmware(FirmwareTestFixture *fixture,
 327                                  gconstpointer user_data)
 328 {
 329     char *fw_pathname, *cmdline;
 330     uint8_t *buf;
 331     size_t i, isa_bios_size;
 332
 333     fw_pathname = create_blob_file();
 334     g_assert(fw_pathname != NULL);
 335
 336     /* Better hope the user didn't put metacharacters in TMPDIR and co. */
 337     cmdline = g_strdup_printf("-S %s%s", fixture->is_bios
 338                                          ? "-bios "
 339                                          : "-drive if=pflash,format=raw,file=",
 340                               fw_pathname);
 341     g_test_message("qemu cmdline: %s", cmdline);
 342     qtest_start(cmdline);
 343     g_free(cmdline);
 344
 345     /* QEMU has loaded the firmware (because qtest_start() only returns after
 346      * the QMP handshake completes). We must unlink the firmware blob right
 347      * here, because any assertion firing below would leak it in the
 348      * filesystem. This is also the reason why we recreate the blob every time
 349      * this function is invoked.
 350      */
 351     unlink(fw_pathname);
 352     g_free(fw_pathname);
 353
 354     /* check below 4G */
 355     buf = g_malloc0(BLOB_SIZE);
 356     memread(0x100000000ULL - BLOB_SIZE, buf, BLOB_SIZE);
 357     for (i = 0; i < BLOB_SIZE; ++i) {
 358         g_assert_cmphex(buf[i], ==, (uint8_t)i);
 359     }
 360
 361     /* check in ISA space too */
 362     memset(buf, 0, BLOB_SIZE);
 363     isa_bios_size = ISA_BIOS_MAXSZ < BLOB_SIZE ? ISA_BIOS_MAXSZ : BLOB_SIZE;
 364     memread(0x100000 - isa_bios_size, buf, isa_bios_size);
 365     for (i = 0; i < isa_bios_size; ++i) {
 366         g_assert_cmphex(buf[i], ==,
 367                         (uint8_t)((BLOB_SIZE - isa_bios_size) + i));
 368     }
 369
 370     g_free(buf);
 371     qtest_end();
 372 }
 373
 374 static void add_firmware_test(const char *testpath,
 375                               void (*setup_fixture)(FirmwareTestFixture *f,
 376                                                     gconstpointer test_data))
 377 {
 378     qtest_add(testpath, FirmwareTestFixture, NULL, setup_fixture,
 379               test_i440fx_firmware, NULL);
 380 }
 381
 382 static void request_bios(FirmwareTestFixture *fixture,
 383                          gconstpointer user_data)
 384 {
 385     fixture->is_bios = true;
 386 }
 387
 388 static void request_pflash(FirmwareTestFixture *fixture,
 389                            gconstpointer user_data)
 390 {
 391     fixture->is_bios = false;
 392 }
 393
 394 int main(int argc, char **argv)
 395 {
 396     TestData data;
 397
 398     g_test_init(&argc, &argv, NULL);
 399
 400     data.num_cpus = 1;
 401
 402     qtest_add_data_func("i440fx/defaults", &data, test_i440fx_defaults);
 403     qtest_add_data_func("i440fx/pam", &data, test_i440fx_pam);
 404     add_firmware_test("i440fx/firmware/bios", request_bios);
 405     add_firmware_test("i440fx/firmware/pflash", request_pflash);
 406
 407     return g_test_run();
 408 }