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 #include <glib.h>
  17 #include <sys/mman.h>
  18
  19 #include "libqtest.h"
  20 #include "libqos/pci.h"
  21 #include "libqos/pci-pc.h"
  22 #include "hw/pci/pci_regs.h"
  23
  24 #define BROKEN 1
  25
  26 typedef struct TestData
  27 {
  28     int num_cpus;
  29 } TestData;
  30
  31 typedef struct FirmwareTestFixture {
  32     /* decides whether we're testing -bios or -pflash */
  33     bool is_bios;
  34 } FirmwareTestFixture;
  35
  36 static QPCIBus *test_start_get_bus(const TestData *s)
  37 {
  38     char *cmdline;
  39
  40     cmdline = g_strdup_printf("-smp %d", s->num_cpus);
  41     qtest_start(cmdline);
  42     g_free(cmdline);
  43     return qpci_init_pc();
  44 }
  45
  46 static void test_i440fx_defaults(gconstpointer opaque)
  47 {
  48     const TestData *s = opaque;
  49     QPCIBus *bus;
  50     QPCIDevice *dev;
  51     uint32_t value;
  52
  53     bus = test_start_get_bus(s);
  54     dev = qpci_device_find(bus, QPCI_DEVFN(0, 0));
  55     g_assert(dev != NULL);
  56
  57     /* 3.2.2 */
  58     g_assert_cmpint(qpci_config_readw(dev, PCI_VENDOR_ID), ==, 0x8086);
  59     /* 3.2.3 */
  60     g_assert_cmpint(qpci_config_readw(dev, PCI_DEVICE_ID), ==, 0x1237);
  61 #ifndef BROKEN
  62     /* 3.2.4 */
  63     g_assert_cmpint(qpci_config_readw(dev, PCI_COMMAND), ==, 0x0006);
  64     /* 3.2.5 */
  65     g_assert_cmpint(qpci_config_readw(dev, PCI_STATUS), ==, 0x0280);
  66 #endif
  67     /* 3.2.7 */
  68     g_assert_cmpint(qpci_config_readb(dev, PCI_CLASS_PROG), ==, 0x00);
  69     g_assert_cmpint(qpci_config_readw(dev, PCI_CLASS_DEVICE), ==, 0x0600);
  70     /* 3.2.8 */
  71     g_assert_cmpint(qpci_config_readb(dev, PCI_LATENCY_TIMER), ==, 0x00);
  72     /* 3.2.9 */
  73     g_assert_cmpint(qpci_config_readb(dev, PCI_HEADER_TYPE), ==, 0x00);
  74     /* 3.2.10 */
  75     g_assert_cmpint(qpci_config_readb(dev, PCI_BIST), ==, 0x00);
  76
  77     /* 3.2.11 */
  78     value = qpci_config_readw(dev, 0x50); /* PMCCFG */
  79     if (s->num_cpus == 1) { /* WPE */
  80         g_assert(!(value & (1 << 15)));
  81     } else {
  82         g_assert((value & (1 << 15)));
  83     }
  84
  85     g_assert(!(value & (1 << 6))); /* EPTE */
  86
  87     /* 3.2.12 */
  88     g_assert_cmpint(qpci_config_readb(dev, 0x52), ==, 0x00); /* DETURBO */
  89     /* 3.2.13 */
  90 #ifndef BROKEN
  91     g_assert_cmpint(qpci_config_readb(dev, 0x53), ==, 0x80); /* DBC */
  92 #endif
  93     /* 3.2.14 */
  94     g_assert_cmpint(qpci_config_readb(dev, 0x54), ==, 0x00); /* AXC */
  95     /* 3.2.15 */
  96     g_assert_cmpint(qpci_config_readw(dev, 0x55), ==, 0x0000); /* DRT */
  97 #ifndef BROKEN
  98     /* 3.2.16 */
  99     g_assert_cmpint(qpci_config_readb(dev, 0x57), ==, 0x01); /* DRAMC */
 100     /* 3.2.17 */
 101     g_assert_cmpint(qpci_config_readb(dev, 0x58), ==, 0x10); /* DRAMT */
 102 #endif
 103     /* 3.2.18 */
 104     g_assert_cmpint(qpci_config_readb(dev, 0x59), ==, 0x00); /* PAM0 */
 105     g_assert_cmpint(qpci_config_readb(dev, 0x5A), ==, 0x00); /* PAM1 */
 106     g_assert_cmpint(qpci_config_readb(dev, 0x5B), ==, 0x00); /* PAM2 */
 107     g_assert_cmpint(qpci_config_readb(dev, 0x5C), ==, 0x00); /* PAM3 */
 108     g_assert_cmpint(qpci_config_readb(dev, 0x5D), ==, 0x00); /* PAM4 */
 109     g_assert_cmpint(qpci_config_readb(dev, 0x5E), ==, 0x00); /* PAM5 */
 110     g_assert_cmpint(qpci_config_readb(dev, 0x5F), ==, 0x00); /* PAM6 */
 111 #ifndef BROKEN
 112     /* 3.2.19 */
 113     g_assert_cmpint(qpci_config_readb(dev, 0x60), ==, 0x01); /* DRB0 */
 114     g_assert_cmpint(qpci_config_readb(dev, 0x61), ==, 0x01); /* DRB1 */
 115     g_assert_cmpint(qpci_config_readb(dev, 0x62), ==, 0x01); /* DRB2 */
 116     g_assert_cmpint(qpci_config_readb(dev, 0x63), ==, 0x01); /* DRB3 */
 117     g_assert_cmpint(qpci_config_readb(dev, 0x64), ==, 0x01); /* DRB4 */
 118     g_assert_cmpint(qpci_config_readb(dev, 0x65), ==, 0x01); /* DRB5 */
 119     g_assert_cmpint(qpci_config_readb(dev, 0x66), ==, 0x01); /* DRB6 */
 120     g_assert_cmpint(qpci_config_readb(dev, 0x67), ==, 0x01); /* DRB7 */
 121 #endif
 122     /* 3.2.20 */
 123     g_assert_cmpint(qpci_config_readb(dev, 0x68), ==, 0x00); /* FDHC */
 124     /* 3.2.21 */
 125     g_assert_cmpint(qpci_config_readb(dev, 0x70), ==, 0x00); /* MTT */
 126 #ifndef BROKEN
 127     /* 3.2.22 */
 128     g_assert_cmpint(qpci_config_readb(dev, 0x71), ==, 0x10); /* CLT */
 129 #endif
 130     /* 3.2.23 */
 131     g_assert_cmpint(qpci_config_readb(dev, 0x72), ==, 0x02); /* SMRAM */
 132     /* 3.2.24 */
 133     g_assert_cmpint(qpci_config_readb(dev, 0x90), ==, 0x00); /* ERRCMD */
 134     /* 3.2.25 */
 135     g_assert_cmpint(qpci_config_readb(dev, 0x91), ==, 0x00); /* ERRSTS */
 136     /* 3.2.26 */
 137     g_assert_cmpint(qpci_config_readb(dev, 0x93), ==, 0x00); /* TRC */
 138
 139     qtest_end();
 140 }
 141
 142 #define PAM_RE 1
 143 #define PAM_WE 2
 144
 145 static void pam_set(QPCIDevice *dev, int index, int flags)
 146 {
 147     int regno = 0x59 + (index / 2);
 148     uint8_t reg;
 149
 150     reg = qpci_config_readb(dev, regno);
 151     if (index & 1) {
 152         reg = (reg & 0x0F) | (flags << 4);
 153     } else {
 154         reg = (reg & 0xF0) | flags;
 155     }
 156     qpci_config_writeb(dev, regno, reg);
 157 }
 158
 159 static gboolean verify_area(uint32_t start, uint32_t end, uint8_t value)
 160 {
 161     uint32_t size = end - start + 1;
 162     gboolean ret = TRUE;
 163     uint8_t *data;
 164     int i;
 165
 166     data = g_malloc0(size);
 167     memread(start, data, size);
 168
 169     g_test_message("verify_area: data[0] = 0x%x", data[0]);
 170
 171     for (i = 0; i < size; i++) {
 172         if (data[i] != value) {
 173             ret = FALSE;
 174             break;
 175         }
 176     }
 177
 178     g_free(data);
 179
 180     return ret;
 181 }
 182
 183 static void write_area(uint32_t start, uint32_t end, uint8_t value)
 184 {
 185     uint32_t size = end - start + 1;
 186     uint8_t *data;
 187
 188     data = g_malloc(size);
 189     memset(data, value, size);
 190     memwrite(start, data, size);
 191
 192     g_free(data);
 193 }
 194
 195 static void test_i440fx_pam(gconstpointer opaque)
 196 {
 197     const TestData *s = opaque;
 198     QPCIBus *bus;
 199     QPCIDevice *dev;
 200     int i;
 201     static struct {
 202         uint32_t start;
 203         uint32_t end;
 204     } pam_area[] = {
 205         { 0, 0 },             /* Reserved */
 206         { 0xF0000, 0xFFFFF }, /* BIOS Area */
 207         { 0xC0000, 0xC3FFF }, /* Option ROM */
 208         { 0xC4000, 0xC7FFF }, /* Option ROM */
 209         { 0xC8000, 0xCBFFF }, /* Option ROM */
 210         { 0xCC000, 0xCFFFF }, /* Option ROM */
 211         { 0xD0000, 0xD3FFF }, /* Option ROM */
 212         { 0xD4000, 0xD7FFF }, /* Option ROM */
 213         { 0xD8000, 0xDBFFF }, /* Option ROM */
 214         { 0xDC000, 0xDFFFF }, /* Option ROM */
 215         { 0xE0000, 0xE3FFF }, /* BIOS Extension */
 216         { 0xE4000, 0xE7FFF }, /* BIOS Extension */
 217         { 0xE8000, 0xEBFFF }, /* BIOS Extension */
 218         { 0xEC000, 0xEFFFF }, /* BIOS Extension */
 219     };
 220
 221     bus = test_start_get_bus(s);
 222     dev = qpci_device_find(bus, QPCI_DEVFN(0, 0));
 223     g_assert(dev != NULL);
 224
 225     for (i = 0; i < ARRAY_SIZE(pam_area); i++) {
 226         if (pam_area[i].start == pam_area[i].end) {
 227             continue;
 228         }
 229
 230         g_test_message("Checking area 0x%05x..0x%05x",
 231                        pam_area[i].start, pam_area[i].end);
 232         /* Switch to RE for the area */
 233         pam_set(dev, i, PAM_RE);
 234         /* Verify the RAM is all zeros */
 235         g_assert(verify_area(pam_area[i].start, pam_area[i].end, 0));
 236
 237         /* Switch to WE for the area */
 238         pam_set(dev, i, PAM_RE | PAM_WE);
 239         /* Write out a non-zero mask to the full area */
 240         write_area(pam_area[i].start, pam_area[i].end, 0x42);
 241
 242 #ifndef BROKEN
 243         /* QEMU only supports a limited form of PAM */
 244
 245         /* Switch to !RE for the area */
 246         pam_set(dev, i, PAM_WE);
 247         /* Verify the area is not our mask */
 248         g_assert(!verify_area(pam_area[i].start, pam_area[i].end, 0x42));
 249 #endif
 250
 251         /* Verify the area is our new mask */
 252         g_assert(verify_area(pam_area[i].start, pam_area[i].end, 0x42));
 253
 254         /* Write out a new mask */
 255         write_area(pam_area[i].start, pam_area[i].end, 0x82);
 256
 257 #ifndef BROKEN
 258         /* QEMU only supports a limited form of PAM */
 259
 260         /* Verify the area is not our mask */
 261         g_assert(!verify_area(pam_area[i].start, pam_area[i].end, 0x82));
 262
 263         /* Switch to RE for the area */
 264         pam_set(dev, i, PAM_RE | PAM_WE);
 265 #endif
 266         /* Verify the area is our new mask */
 267         g_assert(verify_area(pam_area[i].start, pam_area[i].end, 0x82));
 268
 269         /* Reset area */
 270         pam_set(dev, i, 0);
 271
 272         /* Verify the area is not our new mask */
 273         g_assert(!verify_area(pam_area[i].start, pam_area[i].end, 0x82));
 274     }
 275     qtest_end();
 276 }
 277
 278 #define BLOB_SIZE ((size_t)65536)
 279 #define ISA_BIOS_MAXSZ ((size_t)(128 * 1024))
 280
 281 /* Create a blob file, and return its absolute pathname as a dynamically
 282  * allocated string.
 283  * The file is closed before the function returns.
 284  * In case of error, NULL is returned. The function prints the error message.
 285  */
 286 static char *create_blob_file(void)
 287 {
 288     int ret, fd;
 289     char *pathname;
 290     GError *error = NULL;
 291
 292     ret = -1;
 293     fd = g_file_open_tmp("blob_XXXXXX", &pathname, &error);
 294     if (fd == -1) {
 295         fprintf(stderr, "unable to create blob file: %s\n", error->message);
 296         g_error_free(error);
 297     } else {
 298         if (ftruncate(fd, BLOB_SIZE) == -1) {
 299             fprintf(stderr, "ftruncate(\"%s\", %zu): %s\n", pathname,
 300                     BLOB_SIZE, strerror(errno));
 301         } else {
 302             void *buf;
 303
 304             buf = mmap(NULL, BLOB_SIZE, PROT_WRITE, MAP_SHARED, fd, 0);
 305             if (buf == MAP_FAILED) {
 306                 fprintf(stderr, "mmap(\"%s\", %zu): %s\n", pathname, BLOB_SIZE,
 307                         strerror(errno));
 308             } else {
 309                 size_t i;
 310
 311                 for (i = 0; i < BLOB_SIZE; ++i) {
 312                     ((uint8_t *)buf)[i] = i;
 313                 }
 314                 munmap(buf, BLOB_SIZE);
 315                 ret = 0;
 316             }
 317         }
 318         close(fd);
 319         if (ret == -1) {
 320             unlink(pathname);
 321             g_free(pathname);
 322         }
 323     }
 324
 325     return ret == -1 ? NULL : pathname;
 326 }
 327
 328 static void test_i440fx_firmware(FirmwareTestFixture *fixture,
 329                                  gconstpointer user_data)
 330 {
 331     char *fw_pathname, *cmdline;
 332     uint8_t *buf;
 333     size_t i, isa_bios_size;
 334
 335     fw_pathname = create_blob_file();
 336     g_assert(fw_pathname != NULL);
 337
 338     /* Better hope the user didn't put metacharacters in TMPDIR and co. */
 339     cmdline = g_strdup_printf("-S %s%s", fixture->is_bios
 340                                          ? "-bios "
 341                                          : "-drive if=pflash,format=raw,file=",
 342                               fw_pathname);
 343     g_test_message("qemu cmdline: %s", cmdline);
 344     qtest_start(cmdline);
 345     g_free(cmdline);
 346
 347     /* QEMU has loaded the firmware (because qtest_start() only returns after
 348      * the QMP handshake completes). We must unlink the firmware blob right
 349      * here, because any assertion firing below would leak it in the
 350      * filesystem. This is also the reason why we recreate the blob every time
 351      * this function is invoked.
 352      */
 353     unlink(fw_pathname);
 354     g_free(fw_pathname);
 355
 356     /* check below 4G */
 357     buf = g_malloc0(BLOB_SIZE);
 358     memread(0x100000000ULL - BLOB_SIZE, buf, BLOB_SIZE);
 359     for (i = 0; i < BLOB_SIZE; ++i) {
 360         g_assert_cmphex(buf[i], ==, (uint8_t)i);
 361     }
 362
 363     /* check in ISA space too */
 364     memset(buf, 0, BLOB_SIZE);
 365     isa_bios_size = ISA_BIOS_MAXSZ < BLOB_SIZE ? ISA_BIOS_MAXSZ : BLOB_SIZE;
 366     memread(0x100000 - isa_bios_size, buf, isa_bios_size);
 367     for (i = 0; i < isa_bios_size; ++i) {
 368         g_assert_cmphex(buf[i], ==,
 369                         (uint8_t)((BLOB_SIZE - isa_bios_size) + i));
 370     }
 371
 372     g_free(buf);
 373     qtest_end();
 374 }
 375
 376 static void add_firmware_test(const char *testpath,
 377                               void (*setup_fixture)(FirmwareTestFixture *f,
 378                                                     gconstpointer test_data))
 379 {
 380     qtest_add(testpath, FirmwareTestFixture, NULL, setup_fixture,
 381               test_i440fx_firmware, NULL);
 382 }
 383
 384 static void request_bios(FirmwareTestFixture *fixture,
 385                          gconstpointer user_data)
 386 {
 387     fixture->is_bios = true;
 388 }
 389
 390 static void request_pflash(FirmwareTestFixture *fixture,
 391                            gconstpointer user_data)
 392 {
 393     fixture->is_bios = false;
 394 }
 395
 396 int main(int argc, char **argv)
 397 {
 398     TestData data;
 399     int ret;
 400
 401     g_test_init(&argc, &argv, NULL);
 402
 403     data.num_cpus = 1;
 404
 405     qtest_add_data_func("i440fx/defaults", &data, test_i440fx_defaults);
 406     qtest_add_data_func("i440fx/pam", &data, test_i440fx_pam);
 407     add_firmware_test("i440fx/firmware/bios", request_bios);
 408     add_firmware_test("i440fx/firmware/pflash", request_pflash);
 409
 410     ret = g_test_run();
 411     return ret;
 412 }