| 1 | /* |
| 2 | * QTest testcase for TPM TIS: common test functions used for both |
| 3 | * the ISA and SYSBUS devices |
| 4 | * |
| 5 | * Copyright (c) 2018 Red Hat, Inc. |
| 6 | * Copyright (c) 2018 IBM Corporation |
| 7 | * |
| 8 | * Authors: |
| 9 | * Marc-André Lureau <marcandre.lureau@redhat.com> |
| 10 | * Stefan Berger <stefanb@linux.vnet.ibm.com> |
| 11 | * |
| 12 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 13 | * See the COPYING file in the top-level directory. |
| 14 | */ |
| 15 | |
| 16 | #include "qemu/osdep.h" |
| 17 | #include <glib/gstdio.h> |
| 18 | |
| 19 | #include "hw/acpi/tpm.h" |
| 20 | #include "io/channel-socket.h" |
| 21 | #include "libqtest-single.h" |
| 22 | #include "qemu/module.h" |
| 23 | #include "tpm-emu.h" |
| 24 | #include "tpm-util.h" |
| 25 | #include "tpm-tis-util.h" |
| 26 | |
| 27 | #define DEBUG_TIS_TEST 0 |
| 28 | |
| 29 | #define DPRINTF(fmt, ...) do { \ |
| 30 | if (DEBUG_TIS_TEST) { \ |
| 31 | printf(fmt, ## __VA_ARGS__); \ |
| 32 | } \ |
| 33 | } while (0) |
| 34 | |
| 35 | #define DPRINTF_ACCESS \ |
| 36 | DPRINTF("%s: %d: locty=%d l=%d access=0x%02x pending_request_flag=0x%x\n", \ |
| 37 | __func__, __LINE__, locty, l, access, pending_request_flag) |
| 38 | |
| 39 | #define DPRINTF_STS \ |
| 40 | DPRINTF("%s: %d: sts = 0x%08x\n", __func__, __LINE__, sts) |
| 41 | |
| 42 | static const uint8_t TPM_CMD[12] = |
| 43 | "\x80\x01\x00\x00\x00\x0c\x00\x00\x01\x44\x00\x00"; |
| 44 | |
| 45 | void tpm_tis_test_check_localities(const void *data) |
| 46 | { |
| 47 | uint8_t locty; |
| 48 | uint8_t access; |
| 49 | uint32_t ifaceid; |
| 50 | uint32_t capability; |
| 51 | uint32_t didvid; |
| 52 | uint32_t rid; |
| 53 | |
| 54 | for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES; locty++) { |
| 55 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 56 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 57 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 58 | |
| 59 | capability = readl(TIS_REG(locty, TPM_TIS_REG_INTF_CAPABILITY)); |
| 60 | g_assert_cmpint(capability, ==, TPM_TIS_CAPABILITIES_SUPPORTED2_0); |
| 61 | |
| 62 | ifaceid = readl(TIS_REG(locty, TPM_TIS_REG_INTERFACE_ID)); |
| 63 | g_assert_cmpint(ifaceid, ==, TPM_TIS_IFACE_ID_SUPPORTED_FLAGS2_0); |
| 64 | |
| 65 | didvid = readl(TIS_REG(locty, TPM_TIS_REG_DID_VID)); |
| 66 | g_assert_cmpint(didvid, !=, 0); |
| 67 | g_assert_cmpint(didvid, !=, 0xffffffff); |
| 68 | |
| 69 | rid = readl(TIS_REG(locty, TPM_TIS_REG_RID)); |
| 70 | g_assert_cmpint(rid, !=, 0); |
| 71 | g_assert_cmpint(rid, !=, 0xffffffff); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | void tpm_tis_test_check_access_reg(const void *data) |
| 76 | { |
| 77 | uint8_t locty; |
| 78 | uint8_t access; |
| 79 | |
| 80 | /* do not test locality 4 (hw only) */ |
| 81 | for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES - 1; locty++) { |
| 82 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 83 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 84 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 85 | |
| 86 | /* request use of locality */ |
| 87 | writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE); |
| 88 | |
| 89 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 90 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 91 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 92 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 93 | |
| 94 | /* release access */ |
| 95 | writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), |
| 96 | TPM_TIS_ACCESS_ACTIVE_LOCALITY); |
| 97 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 98 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 99 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | /* |
| 104 | * Test case for seizing access by a higher number locality |
| 105 | */ |
| 106 | void tpm_tis_test_check_access_reg_seize(const void *data) |
| 107 | { |
| 108 | int locty, l; |
| 109 | uint8_t access; |
| 110 | uint8_t pending_request_flag; |
| 111 | |
| 112 | /* do not test locality 4 (hw only) */ |
| 113 | for (locty = 0; locty < TPM_TIS_NUM_LOCALITIES - 1; locty++) { |
| 114 | pending_request_flag = 0; |
| 115 | |
| 116 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 117 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 118 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 119 | |
| 120 | /* request use of locality */ |
| 121 | writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE); |
| 122 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 123 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 124 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 125 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 126 | |
| 127 | /* lower localities cannot seize access */ |
| 128 | for (l = 0; l < locty; l++) { |
| 129 | /* lower locality is not active */ |
| 130 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 131 | DPRINTF_ACCESS; |
| 132 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 133 | pending_request_flag | |
| 134 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 135 | |
| 136 | /* try to request use from 'l' */ |
| 137 | writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE); |
| 138 | |
| 139 | /* |
| 140 | * requesting use from 'l' was not possible; |
| 141 | * we must see REQUEST_USE and possibly PENDING_REQUEST |
| 142 | */ |
| 143 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 144 | DPRINTF_ACCESS; |
| 145 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 146 | TPM_TIS_ACCESS_REQUEST_USE | |
| 147 | pending_request_flag | |
| 148 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 149 | |
| 150 | /* |
| 151 | * locality 'locty' must be unchanged; |
| 152 | * we must see PENDING_REQUEST |
| 153 | */ |
| 154 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 155 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 156 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 157 | TPM_TIS_ACCESS_PENDING_REQUEST | |
| 158 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 159 | |
| 160 | /* try to seize from 'l' */ |
| 161 | writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_SEIZE); |
| 162 | /* seize from 'l' was not possible */ |
| 163 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 164 | DPRINTF_ACCESS; |
| 165 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 166 | TPM_TIS_ACCESS_REQUEST_USE | |
| 167 | pending_request_flag | |
| 168 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 169 | |
| 170 | /* locality 'locty' must be unchanged */ |
| 171 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 172 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 173 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 174 | TPM_TIS_ACCESS_PENDING_REQUEST | |
| 175 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 176 | |
| 177 | /* |
| 178 | * on the next loop we will have a PENDING_REQUEST flag |
| 179 | * set for locality 'l' |
| 180 | */ |
| 181 | pending_request_flag = TPM_TIS_ACCESS_PENDING_REQUEST; |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * higher localities can 'seize' access but not 'request use'; |
| 186 | * note: this will activate first l+1, then l+2 etc. |
| 187 | */ |
| 188 | for (l = locty + 1; l < TPM_TIS_NUM_LOCALITIES - 1; l++) { |
| 189 | /* try to 'request use' from 'l' */ |
| 190 | writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE); |
| 191 | |
| 192 | /* |
| 193 | * requesting use from 'l' was not possible; we should see |
| 194 | * REQUEST_USE and may see PENDING_REQUEST |
| 195 | */ |
| 196 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 197 | DPRINTF_ACCESS; |
| 198 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 199 | TPM_TIS_ACCESS_REQUEST_USE | |
| 200 | pending_request_flag | |
| 201 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 202 | |
| 203 | /* |
| 204 | * locality 'l-1' must be unchanged; we should always |
| 205 | * see PENDING_REQUEST from 'l' requesting access |
| 206 | */ |
| 207 | access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS)); |
| 208 | DPRINTF_ACCESS; |
| 209 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 210 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 211 | TPM_TIS_ACCESS_PENDING_REQUEST | |
| 212 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 213 | |
| 214 | /* try to seize from 'l' */ |
| 215 | writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_SEIZE); |
| 216 | |
| 217 | /* seize from 'l' was possible */ |
| 218 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 219 | DPRINTF_ACCESS; |
| 220 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 221 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 222 | pending_request_flag | |
| 223 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 224 | |
| 225 | /* l - 1 should show that it has BEEN_SEIZED */ |
| 226 | access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS)); |
| 227 | DPRINTF_ACCESS; |
| 228 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 229 | TPM_TIS_ACCESS_BEEN_SEIZED | |
| 230 | pending_request_flag | |
| 231 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 232 | |
| 233 | /* clear the BEEN_SEIZED flag and make sure it's gone */ |
| 234 | writeb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS), |
| 235 | TPM_TIS_ACCESS_BEEN_SEIZED); |
| 236 | |
| 237 | access = readb(TIS_REG(l - 1, TPM_TIS_REG_ACCESS)); |
| 238 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 239 | pending_request_flag | |
| 240 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 241 | } |
| 242 | |
| 243 | /* |
| 244 | * PENDING_REQUEST will not be set if locty = 0 since all localities |
| 245 | * were active; in case of locty = 1, locality 0 will be active |
| 246 | * but no PENDING_REQUEST anywhere |
| 247 | */ |
| 248 | if (locty <= 1) { |
| 249 | pending_request_flag = 0; |
| 250 | } |
| 251 | |
| 252 | /* release access from l - 1; this activates locty - 1 */ |
| 253 | l--; |
| 254 | |
| 255 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 256 | DPRINTF_ACCESS; |
| 257 | |
| 258 | DPRINTF("%s: %d: relinquishing control on l = %d\n", |
| 259 | __func__, __LINE__, l); |
| 260 | writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), |
| 261 | TPM_TIS_ACCESS_ACTIVE_LOCALITY); |
| 262 | |
| 263 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 264 | DPRINTF_ACCESS; |
| 265 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 266 | pending_request_flag | |
| 267 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 268 | |
| 269 | for (l = locty - 1; l >= 0; l--) { |
| 270 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 271 | DPRINTF_ACCESS; |
| 272 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 273 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 274 | pending_request_flag | |
| 275 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 276 | |
| 277 | /* release this locality */ |
| 278 | writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), |
| 279 | TPM_TIS_ACCESS_ACTIVE_LOCALITY); |
| 280 | |
| 281 | if (l == 1) { |
| 282 | pending_request_flag = 0; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | /* no locality may be active now */ |
| 287 | for (l = 0; l < TPM_TIS_NUM_LOCALITIES - 1; l++) { |
| 288 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 289 | DPRINTF_ACCESS; |
| 290 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 291 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 292 | } |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | /* |
| 297 | * Test case for getting access when higher number locality relinquishes access |
| 298 | */ |
| 299 | void tpm_tis_test_check_access_reg_release(const void *data) |
| 300 | { |
| 301 | int locty, l; |
| 302 | uint8_t access; |
| 303 | uint8_t pending_request_flag; |
| 304 | |
| 305 | /* do not test locality 4 (hw only) */ |
| 306 | for (locty = TPM_TIS_NUM_LOCALITIES - 2; locty >= 0; locty--) { |
| 307 | pending_request_flag = 0; |
| 308 | |
| 309 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 310 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 311 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 312 | |
| 313 | /* request use of locality */ |
| 314 | writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE); |
| 315 | access = readb(TIS_REG(locty, TPM_TIS_REG_ACCESS)); |
| 316 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 317 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 318 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 319 | |
| 320 | /* request use of all other localities */ |
| 321 | for (l = 0; l < TPM_TIS_NUM_LOCALITIES - 1; l++) { |
| 322 | if (l == locty) { |
| 323 | continue; |
| 324 | } |
| 325 | /* |
| 326 | * request use of locality 'l' -- we MUST see REQUEST USE and |
| 327 | * may see PENDING_REQUEST |
| 328 | */ |
| 329 | writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE); |
| 330 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 331 | DPRINTF_ACCESS; |
| 332 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 333 | TPM_TIS_ACCESS_REQUEST_USE | |
| 334 | pending_request_flag | |
| 335 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 336 | pending_request_flag = TPM_TIS_ACCESS_PENDING_REQUEST; |
| 337 | } |
| 338 | /* release locality 'locty' */ |
| 339 | writeb(TIS_REG(locty, TPM_TIS_REG_ACCESS), |
| 340 | TPM_TIS_ACCESS_ACTIVE_LOCALITY); |
| 341 | /* |
| 342 | * highest locality should now be active; release it and make sure the |
| 343 | * next highest locality is active afterwards |
| 344 | */ |
| 345 | for (l = TPM_TIS_NUM_LOCALITIES - 2; l >= 0; l--) { |
| 346 | if (l == locty) { |
| 347 | continue; |
| 348 | } |
| 349 | /* 'l' should be active now */ |
| 350 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 351 | DPRINTF_ACCESS; |
| 352 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 353 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 354 | pending_request_flag | |
| 355 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 356 | /* 'l' relinquishes access */ |
| 357 | writeb(TIS_REG(l, TPM_TIS_REG_ACCESS), |
| 358 | TPM_TIS_ACCESS_ACTIVE_LOCALITY); |
| 359 | access = readb(TIS_REG(l, TPM_TIS_REG_ACCESS)); |
| 360 | DPRINTF_ACCESS; |
| 361 | if (l == 1 || (locty <= 1 && l == 2)) { |
| 362 | pending_request_flag = 0; |
| 363 | } |
| 364 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 365 | pending_request_flag | |
| 366 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 367 | } |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | /* |
| 372 | * Test case for transmitting packets |
| 373 | */ |
| 374 | void tpm_tis_test_check_transmit(const void *data) |
| 375 | { |
| 376 | const TPMTestState *s = data; |
| 377 | uint8_t access; |
| 378 | uint32_t sts; |
| 379 | uint16_t bcount; |
| 380 | size_t i; |
| 381 | |
| 382 | /* request use of locality 0 */ |
| 383 | writeb(TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE); |
| 384 | access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS)); |
| 385 | g_assert_cmpint(access, ==, TPM_TIS_ACCESS_TPM_REG_VALID_STS | |
| 386 | TPM_TIS_ACCESS_ACTIVE_LOCALITY | |
| 387 | TPM_TIS_ACCESS_TPM_ESTABLISHMENT); |
| 388 | |
| 389 | sts = readl(TIS_REG(0, TPM_TIS_REG_STS)); |
| 390 | DPRINTF_STS; |
| 391 | |
| 392 | g_assert_cmpint(sts & 0xff, ==, 0); |
| 393 | g_assert_cmpint(sts & TPM_TIS_STS_TPM_FAMILY_MASK, ==, |
| 394 | TPM_TIS_STS_TPM_FAMILY2_0); |
| 395 | |
| 396 | bcount = (sts >> 8) & 0xffff; |
| 397 | g_assert_cmpint(bcount, >=, 128); |
| 398 | |
| 399 | writel(TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_COMMAND_READY); |
| 400 | sts = readl(TIS_REG(0, TPM_TIS_REG_STS)); |
| 401 | DPRINTF_STS; |
| 402 | g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_COMMAND_READY); |
| 403 | |
| 404 | /* transmit command */ |
| 405 | for (i = 0; i < sizeof(TPM_CMD); i++) { |
| 406 | writeb(TIS_REG(0, TPM_TIS_REG_DATA_FIFO), TPM_CMD[i]); |
| 407 | sts = readl(TIS_REG(0, TPM_TIS_REG_STS)); |
| 408 | DPRINTF_STS; |
| 409 | if (i < sizeof(TPM_CMD) - 1) { |
| 410 | g_assert_cmpint(sts & 0xff, ==, |
| 411 | TPM_TIS_STS_EXPECT | TPM_TIS_STS_VALID); |
| 412 | } else { |
| 413 | g_assert_cmpint(sts & 0xff, ==, TPM_TIS_STS_VALID); |
| 414 | } |
| 415 | g_assert_cmpint((sts >> 8) & 0xffff, ==, --bcount); |
| 416 | } |
| 417 | /* start processing */ |
| 418 | writeb(TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_TPM_GO); |
| 419 | |
| 420 | uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND; |
| 421 | do { |
| 422 | sts = readl(TIS_REG(0, TPM_TIS_REG_STS)); |
| 423 | if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) { |
| 424 | break; |
| 425 | } |
| 426 | } while (g_get_monotonic_time() < end_time); |
| 427 | |
| 428 | sts = readl(TIS_REG(0, TPM_TIS_REG_STS)); |
| 429 | DPRINTF_STS; |
| 430 | g_assert_cmpint(sts & 0xff, == , |
| 431 | TPM_TIS_STS_VALID | TPM_TIS_STS_DATA_AVAILABLE); |
| 432 | bcount = (sts >> 8) & 0xffff; |
| 433 | |
| 434 | /* read response */ |
| 435 | uint8_t tpm_msg[sizeof(struct tpm_hdr)]; |
| 436 | g_assert_cmpint(sizeof(tpm_msg), ==, bcount); |
| 437 | |
| 438 | for (i = 0; i < sizeof(tpm_msg); i++) { |
| 439 | tpm_msg[i] = readb(TIS_REG(0, TPM_TIS_REG_DATA_FIFO)); |
| 440 | sts = readl(TIS_REG(0, TPM_TIS_REG_STS)); |
| 441 | DPRINTF_STS; |
| 442 | if (sts & TPM_TIS_STS_DATA_AVAILABLE) { |
| 443 | g_assert_cmpint((sts >> 8) & 0xffff, ==, --bcount); |
| 444 | } |
| 445 | } |
| 446 | g_assert_cmpmem(tpm_msg, sizeof(tpm_msg), s->tpm_msg, sizeof(*s->tpm_msg)); |
| 447 | |
| 448 | /* relinquish use of locality 0 */ |
| 449 | writeb(TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_ACTIVE_LOCALITY); |
| 450 | access = readb(TIS_REG(0, TPM_TIS_REG_ACCESS)); |
| 451 | } |
| 452 | |
| 453 | void tpm_tis_transfer(QTestState *s, |
| 454 | const unsigned char *req, size_t req_size, |
| 455 | unsigned char *rsp, size_t rsp_size) |
| 456 | { |
| 457 | uint32_t sts; |
| 458 | uint16_t bcount; |
| 459 | size_t i; |
| 460 | |
| 461 | /* request use of locality 0 */ |
| 462 | qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_ACCESS), TPM_TIS_ACCESS_REQUEST_USE); |
| 463 | qtest_writel(s, TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_COMMAND_READY); |
| 464 | |
| 465 | sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS)); |
| 466 | bcount = (sts >> 8) & 0xffff; |
| 467 | g_assert_cmpint(bcount, >=, req_size); |
| 468 | |
| 469 | /* transmit command */ |
| 470 | for (i = 0; i < req_size; i++) { |
| 471 | qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_DATA_FIFO), req[i]); |
| 472 | } |
| 473 | |
| 474 | /* start processing */ |
| 475 | qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_STS), TPM_TIS_STS_TPM_GO); |
| 476 | |
| 477 | uint64_t end_time = g_get_monotonic_time() + 50 * G_TIME_SPAN_SECOND; |
| 478 | do { |
| 479 | sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS)); |
| 480 | if ((sts & TPM_TIS_STS_DATA_AVAILABLE) != 0) { |
| 481 | break; |
| 482 | } |
| 483 | } while (g_get_monotonic_time() < end_time); |
| 484 | |
| 485 | sts = qtest_readl(s, TIS_REG(0, TPM_TIS_REG_STS)); |
| 486 | bcount = (sts >> 8) & 0xffff; |
| 487 | |
| 488 | memset(rsp, 0, rsp_size); |
| 489 | for (i = 0; i < bcount; i++) { |
| 490 | rsp[i] = qtest_readb(s, TIS_REG(0, TPM_TIS_REG_DATA_FIFO)); |
| 491 | } |
| 492 | |
| 493 | /* relinquish use of locality 0 */ |
| 494 | qtest_writeb(s, TIS_REG(0, TPM_TIS_REG_ACCESS), |
| 495 | TPM_TIS_ACCESS_ACTIVE_LOCALITY); |
| 496 | } |