1 /* 2 * IPMI BT test cases, using the external interface for checking 3 * 4 * Copyright (c) 2012 Corey Minyard <cminyard@mvista.com> 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a copy 7 * of this software and associated documentation files (the "Software"), to deal 8 * in the Software without restriction, including without limitation the rights 9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 10 * copies of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 22 * THE SOFTWARE. 23 */ 24 25 #include "qemu/osdep.h" 26 27 #include <sys/socket.h> 28 #include <netinet/in.h> 29 #include <netinet/ip.h> 30 #include <netinet/tcp.h> 31 32 33 #include "libqtest-single.h" 34 #include "qemu-common.h" 35 36 #define IPMI_IRQ 5 37 38 #define IPMI_BT_BASE 0xe4 39 40 #define IPMI_BT_CTLREG_CLR_WR_PTR 0 41 #define IPMI_BT_CTLREG_CLR_RD_PTR 1 42 #define IPMI_BT_CTLREG_H2B_ATN 2 43 #define IPMI_BT_CTLREG_B2H_ATN 3 44 #define IPMI_BT_CTLREG_SMS_ATN 4 45 #define IPMI_BT_CTLREG_H_BUSY 6 46 #define IPMI_BT_CTLREG_B_BUSY 7 47 48 #define IPMI_BT_CTLREG_GET(b) ((bt_get_ctrlreg() >> (b)) & 1) 49 #define IPMI_BT_CTLREG_GET_H2B_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_H2B_ATN) 50 #define IPMI_BT_CTLREG_GET_B2H_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_B2H_ATN) 51 #define IPMI_BT_CTLREG_GET_SMS_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_SMS_ATN) 52 #define IPMI_BT_CTLREG_GET_H_BUSY() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_H_BUSY) 53 #define IPMI_BT_CTLREG_GET_B_BUSY() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_B_BUSY) 54 55 #define IPMI_BT_CTLREG_SET(b) bt_write_ctrlreg(1 << (b)) 56 #define IPMI_BT_CTLREG_SET_CLR_WR_PTR() IPMI_BT_CTLREG_SET( \ 57 IPMI_BT_CTLREG_CLR_WR_PTR) 58 #define IPMI_BT_CTLREG_SET_CLR_RD_PTR() IPMI_BT_CTLREG_SET( \ 59 IPMI_BT_CTLREG_CLR_RD_PTR) 60 #define IPMI_BT_CTLREG_SET_H2B_ATN() IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_H2B_ATN) 61 #define IPMI_BT_CTLREG_SET_B2H_ATN() IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_B2H_ATN) 62 #define IPMI_BT_CTLREG_SET_SMS_ATN() IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_SMS_ATN) 63 #define IPMI_BT_CTLREG_SET_H_BUSY() IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_H_BUSY) 64 65 static int bt_ints_enabled; 66 67 static uint8_t bt_get_ctrlreg(void) 68 { 69 return inb(IPMI_BT_BASE); 70 } 71 72 static void bt_write_ctrlreg(uint8_t val) 73 { 74 outb(IPMI_BT_BASE, val); 75 } 76 77 static uint8_t bt_get_buf(void) 78 { 79 return inb(IPMI_BT_BASE + 1); 80 } 81 82 static void bt_write_buf(uint8_t val) 83 { 84 outb(IPMI_BT_BASE + 1, val); 85 } 86 87 static uint8_t bt_get_irqreg(void) 88 { 89 return inb(IPMI_BT_BASE + 2); 90 } 91 92 static void bt_write_irqreg(uint8_t val) 93 { 94 outb(IPMI_BT_BASE + 2, val); 95 } 96 97 static void bt_wait_b_busy(void) 98 { 99 unsigned int count = 1000; 100 while (IPMI_BT_CTLREG_GET_B_BUSY() != 0) { 101 g_assert(--count != 0); 102 usleep(100); 103 } 104 } 105 106 static void bt_wait_b2h_atn(void) 107 { 108 unsigned int count = 1000; 109 while (IPMI_BT_CTLREG_GET_B2H_ATN() == 0) { 110 g_assert(--count != 0); 111 usleep(100); 112 } 113 } 114 115 116 static int emu_lfd; 117 static int emu_fd; 118 static in_port_t emu_port; 119 static uint8_t inbuf[100]; 120 static unsigned int inbuf_len; 121 static unsigned int inbuf_pos; 122 static int last_was_aa; 123 124 static void read_emu_data(void) 125 { 126 fd_set readfds; 127 int rv; 128 struct timeval tv; 129 130 FD_ZERO(&readfds); 131 FD_SET(emu_fd, &readfds); 132 tv.tv_sec = 10; 133 tv.tv_usec = 0; 134 rv = select(emu_fd + 1, &readfds, NULL, NULL, &tv); 135 if (rv == -1) { 136 perror("select"); 137 } 138 g_assert(rv == 1); 139 rv = read(emu_fd, inbuf, sizeof(inbuf)); 140 if (rv == -1) { 141 perror("read"); 142 } 143 g_assert(rv > 0); 144 inbuf_len = rv; 145 inbuf_pos = 0; 146 } 147 148 static void write_emu_msg(uint8_t *msg, unsigned int len) 149 { 150 int rv; 151 152 #ifdef DEBUG_TEST 153 { 154 unsigned int i; 155 printf("sending:"); 156 for (i = 0; i < len; i++) { 157 printf(" %2.2x", msg[i]); 158 } 159 printf("\n"); 160 } 161 #endif 162 rv = write(emu_fd, msg, len); 163 g_assert(rv == len); 164 } 165 166 static void get_emu_msg(uint8_t *msg, unsigned int *len) 167 { 168 unsigned int outpos = 0; 169 170 for (;;) { 171 while (inbuf_pos < inbuf_len) { 172 uint8_t ch = inbuf[inbuf_pos++]; 173 174 g_assert(outpos < *len); 175 if (last_was_aa) { 176 assert(ch & 0x10); 177 msg[outpos++] = ch & ~0x10; 178 last_was_aa = 0; 179 } else if (ch == 0xaa) { 180 last_was_aa = 1; 181 } else { 182 msg[outpos++] = ch; 183 if ((ch == 0xa0) || (ch == 0xa1)) { 184 /* Message complete */ 185 *len = outpos; 186 goto done; 187 } 188 } 189 } 190 read_emu_data(); 191 } 192 done: 193 #ifdef DEBUG_TEST 194 { 195 unsigned int i; 196 printf("Msg:"); 197 for (i = 0; i < outpos; i++) { 198 printf(" %2.2x", msg[i]); 199 } 200 printf("\n"); 201 } 202 #endif 203 return; 204 } 205 206 static uint8_t 207 ipmb_checksum(const unsigned char *data, int size, unsigned char start) 208 { 209 unsigned char csum = start; 210 211 for (; size > 0; size--, data++) { 212 csum += *data; 213 } 214 return csum; 215 } 216 217 static uint8_t get_dev_id_cmd[] = { 0x18, 0x01 }; 218 static uint8_t get_dev_id_rsp[] = { 0x1c, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00, 219 0x02, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 }; 220 221 static uint8_t set_bmc_globals_cmd[] = { 0x18, 0x2e, 0x0f }; 222 static uint8_t set_bmc_globals_rsp[] = { 0x1c, 0x2e, 0x00 }; 223 static uint8_t enable_irq_cmd[] = { 0x05, 0xa1 }; 224 225 static void emu_msg_handler(void) 226 { 227 uint8_t msg[100]; 228 unsigned int msg_len = sizeof(msg); 229 230 get_emu_msg(msg, &msg_len); 231 g_assert(msg_len >= 5); 232 g_assert(msg[msg_len - 1] == 0xa0); 233 msg_len--; 234 g_assert(ipmb_checksum(msg, msg_len, 0) == 0); 235 msg_len--; 236 if ((msg[1] == get_dev_id_cmd[0]) && (msg[2] == get_dev_id_cmd[1])) { 237 memcpy(msg + 1, get_dev_id_rsp, sizeof(get_dev_id_rsp)); 238 msg_len = sizeof(get_dev_id_rsp) + 1; 239 msg[msg_len] = -ipmb_checksum(msg, msg_len, 0); 240 msg_len++; 241 msg[msg_len++] = 0xa0; 242 write_emu_msg(msg, msg_len); 243 } else if ((msg[1] == set_bmc_globals_cmd[0]) && 244 (msg[2] == set_bmc_globals_cmd[1])) { 245 write_emu_msg(enable_irq_cmd, sizeof(enable_irq_cmd)); 246 memcpy(msg + 1, set_bmc_globals_rsp, sizeof(set_bmc_globals_rsp)); 247 msg_len = sizeof(set_bmc_globals_rsp) + 1; 248 msg[msg_len] = -ipmb_checksum(msg, msg_len, 0); 249 msg_len++; 250 msg[msg_len++] = 0xa0; 251 write_emu_msg(msg, msg_len); 252 } else { 253 g_assert(0); 254 } 255 } 256 257 static void bt_cmd(uint8_t *cmd, unsigned int cmd_len, 258 uint8_t *rsp, unsigned int *rsp_len) 259 { 260 unsigned int i, len, j = 0; 261 uint8_t seq = 5; 262 263 /* Should be idle */ 264 g_assert(bt_get_ctrlreg() == 0); 265 266 bt_wait_b_busy(); 267 IPMI_BT_CTLREG_SET_CLR_WR_PTR(); 268 bt_write_buf(cmd_len + 1); 269 bt_write_buf(cmd[0]); 270 bt_write_buf(seq); 271 for (i = 1; i < cmd_len; i++) { 272 bt_write_buf(cmd[i]); 273 } 274 IPMI_BT_CTLREG_SET_H2B_ATN(); 275 276 emu_msg_handler(); /* We should get a message on the socket here. */ 277 278 bt_wait_b2h_atn(); 279 if (bt_ints_enabled) { 280 g_assert((bt_get_irqreg() & 0x02) == 0x02); 281 g_assert(get_irq(IPMI_IRQ)); 282 bt_write_irqreg(0x03); 283 } else { 284 g_assert(!get_irq(IPMI_IRQ)); 285 } 286 IPMI_BT_CTLREG_SET_H_BUSY(); 287 IPMI_BT_CTLREG_SET_B2H_ATN(); 288 IPMI_BT_CTLREG_SET_CLR_RD_PTR(); 289 len = bt_get_buf(); 290 g_assert(len >= 4); 291 rsp[0] = bt_get_buf(); 292 assert(bt_get_buf() == seq); 293 len--; 294 for (j = 1; j < len; j++) { 295 rsp[j] = bt_get_buf(); 296 } 297 IPMI_BT_CTLREG_SET_H_BUSY(); 298 *rsp_len = j; 299 } 300 301 302 /* 303 * We should get a connect request and a short message with capabilities. 304 */ 305 static void test_connect(void) 306 { 307 fd_set readfds; 308 int rv; 309 int val; 310 struct timeval tv; 311 uint8_t msg[100]; 312 unsigned int msglen; 313 static uint8_t exp1[] = { 0xff, 0x01, 0xa1 }; /* A protocol version */ 314 static uint8_t exp2[] = { 0x08, 0x3f, 0xa1 }; /* A capabilities cmd */ 315 316 FD_ZERO(&readfds); 317 FD_SET(emu_lfd, &readfds); 318 tv.tv_sec = 10; 319 tv.tv_usec = 0; 320 rv = select(emu_lfd + 1, &readfds, NULL, NULL, &tv); 321 g_assert(rv == 1); 322 emu_fd = accept(emu_lfd, NULL, 0); 323 if (emu_fd < 0) { 324 perror("accept"); 325 } 326 g_assert(emu_fd >= 0); 327 328 val = 1; 329 rv = setsockopt(emu_fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val)); 330 g_assert(rv != -1); 331 332 /* Report our version */ 333 write_emu_msg(exp1, sizeof(exp1)); 334 335 /* Validate that we get the info we expect. */ 336 msglen = sizeof(msg); 337 get_emu_msg(msg, &msglen); 338 g_assert(msglen == sizeof(exp1)); 339 g_assert(memcmp(msg, exp1, msglen) == 0); 340 msglen = sizeof(msg); 341 get_emu_msg(msg, &msglen); 342 g_assert(msglen == sizeof(exp2)); 343 g_assert(memcmp(msg, exp2, msglen) == 0); 344 } 345 346 /* 347 * Send a get_device_id to do a basic test. 348 */ 349 static void test_bt_base(void) 350 { 351 uint8_t rsp[20]; 352 unsigned int rsplen = sizeof(rsp); 353 354 bt_cmd(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen); 355 g_assert(rsplen == sizeof(get_dev_id_rsp)); 356 g_assert(memcmp(get_dev_id_rsp, rsp, rsplen) == 0); 357 } 358 359 /* 360 * Enable IRQs for the interface. 361 */ 362 static void test_enable_irq(void) 363 { 364 uint8_t rsp[20]; 365 unsigned int rsplen = sizeof(rsp); 366 367 bt_cmd(set_bmc_globals_cmd, sizeof(set_bmc_globals_cmd), rsp, &rsplen); 368 g_assert(rsplen == sizeof(set_bmc_globals_rsp)); 369 g_assert(memcmp(set_bmc_globals_rsp, rsp, rsplen) == 0); 370 bt_write_irqreg(0x01); 371 bt_ints_enabled = 1; 372 } 373 374 /* 375 * Create a local TCP socket with any port, then save off the port we got. 376 */ 377 static void open_socket(void) 378 { 379 struct sockaddr_in myaddr; 380 socklen_t addrlen; 381 382 myaddr.sin_family = AF_INET; 383 myaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); 384 myaddr.sin_port = 0; 385 emu_lfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); 386 if (emu_lfd == -1) { 387 perror("socket"); 388 exit(1); 389 } 390 if (bind(emu_lfd, (struct sockaddr *) &myaddr, sizeof(myaddr)) == -1) { 391 perror("bind"); 392 exit(1); 393 } 394 addrlen = sizeof(myaddr); 395 if (getsockname(emu_lfd, (struct sockaddr *) &myaddr , &addrlen) == -1) { 396 perror("getsockname"); 397 exit(1); 398 } 399 emu_port = ntohs(myaddr.sin_port); 400 assert(listen(emu_lfd, 1) != -1); 401 } 402 403 int main(int argc, char **argv) 404 { 405 int ret; 406 407 open_socket(); 408 409 /* Run the tests */ 410 g_test_init(&argc, &argv, NULL); 411 412 global_qtest = qtest_initf( 413 " -chardev socket,id=ipmi0,host=localhost,port=%d,reconnect=10" 414 " -device ipmi-bmc-extern,chardev=ipmi0,id=bmc0" 415 " -device isa-ipmi-bt,bmc=bmc0", emu_port); 416 qtest_irq_intercept_in(global_qtest, "ioapic"); 417 qtest_add_func("/ipmi/extern/connect", test_connect); 418 qtest_add_func("/ipmi/extern/bt_base", test_bt_base); 419 qtest_add_func("/ipmi/extern/bt_enable_irq", test_enable_irq); 420 qtest_add_func("/ipmi/extern/bt_base_irq", test_bt_base); 421 ret = g_test_run(); 422 qtest_quit(global_qtest); 423 424 return ret; 425 } 426