tests/qtest/ipmi-bt-test.c

   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
  35 #define IPMI_IRQ        5
  36
  37 #define IPMI_BT_BASE    0xe4
  38
  39 #define IPMI_BT_CTLREG_CLR_WR_PTR  0
  40 #define IPMI_BT_CTLREG_CLR_RD_PTR  1
  41 #define IPMI_BT_CTLREG_H2B_ATN     2
  42 #define IPMI_BT_CTLREG_B2H_ATN     3
  43 #define IPMI_BT_CTLREG_SMS_ATN     4
  44 #define IPMI_BT_CTLREG_H_BUSY      6
  45 #define IPMI_BT_CTLREG_B_BUSY      7
  46
  47 #define IPMI_BT_CTLREG_GET(b) ((bt_get_ctrlreg() >> (b)) & 1)
  48 #define IPMI_BT_CTLREG_GET_H2B_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_H2B_ATN)
  49 #define IPMI_BT_CTLREG_GET_B2H_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_B2H_ATN)
  50 #define IPMI_BT_CTLREG_GET_SMS_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_SMS_ATN)
  51 #define IPMI_BT_CTLREG_GET_H_BUSY()  IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_H_BUSY)
  52 #define IPMI_BT_CTLREG_GET_B_BUSY()  IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_B_BUSY)
  53
  54 #define IPMI_BT_CTLREG_SET(b) bt_write_ctrlreg(1 << (b))
  55 #define IPMI_BT_CTLREG_SET_CLR_WR_PTR() IPMI_BT_CTLREG_SET( \
  56                                                 IPMI_BT_CTLREG_CLR_WR_PTR)
  57 #define IPMI_BT_CTLREG_SET_CLR_RD_PTR() IPMI_BT_CTLREG_SET( \
  58                                                 IPMI_BT_CTLREG_CLR_RD_PTR)
  59 #define IPMI_BT_CTLREG_SET_H2B_ATN()  IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_H2B_ATN)
  60 #define IPMI_BT_CTLREG_SET_B2H_ATN()  IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_B2H_ATN)
  61 #define IPMI_BT_CTLREG_SET_SMS_ATN()  IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_SMS_ATN)
  62 #define IPMI_BT_CTLREG_SET_H_BUSY()   IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_H_BUSY)
  63
  64 static int bt_ints_enabled;
  65
  66 static uint8_t bt_get_ctrlreg(void)
  67 {
  68     return inb(IPMI_BT_BASE);
  69 }
  70
  71 static void bt_write_ctrlreg(uint8_t val)
  72 {
  73     outb(IPMI_BT_BASE, val);
  74 }
  75
  76 static uint8_t bt_get_buf(void)
  77 {
  78     return inb(IPMI_BT_BASE + 1);
  79 }
  80
  81 static void bt_write_buf(uint8_t val)
  82 {
  83     outb(IPMI_BT_BASE + 1, val);
  84 }
  85
  86 static uint8_t bt_get_irqreg(void)
  87 {
  88     return inb(IPMI_BT_BASE + 2);
  89 }
  90
  91 static void bt_write_irqreg(uint8_t val)
  92 {
  93     outb(IPMI_BT_BASE + 2, val);
  94 }
  95
  96 static void bt_wait_b_busy(void)
  97 {
  98     unsigned int count = 1000;
  99     while (IPMI_BT_CTLREG_GET_B_BUSY() != 0) {
 100         --count;
 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         --count;
 111         g_assert(count != 0);
 112         usleep(100);
 113     }
 114 }
 115
 116
 117 static int emu_lfd;
 118 static int emu_fd;
 119 static in_port_t emu_port;
 120 static uint8_t inbuf[100];
 121 static unsigned int inbuf_len;
 122 static unsigned int inbuf_pos;
 123 static int last_was_aa;
 124
 125 static void read_emu_data(void)
 126 {
 127     fd_set readfds;
 128     int rv;
 129     struct timeval tv;
 130
 131     FD_ZERO(&readfds);
 132     FD_SET(emu_fd, &readfds);
 133     tv.tv_sec = 10;
 134     tv.tv_usec = 0;
 135     rv = select(emu_fd + 1, &readfds, NULL, NULL, &tv);
 136     if (rv == -1) {
 137         perror("select");
 138     }
 139     g_assert(rv == 1);
 140     rv = read(emu_fd, inbuf, sizeof(inbuf));
 141     if (rv == -1) {
 142         perror("read");
 143     }
 144     g_assert(rv > 0);
 145     inbuf_len = rv;
 146     inbuf_pos = 0;
 147 }
 148
 149 static void write_emu_msg(uint8_t *msg, unsigned int len)
 150 {
 151     int rv;
 152
 153 #ifdef DEBUG_TEST
 154     {
 155         unsigned int i;
 156         printf("sending:");
 157         for (i = 0; i < len; i++) {
 158             printf(" %2.2x", msg[i]);
 159         }
 160         printf("\n");
 161     }
 162 #endif
 163     rv = write(emu_fd, msg, len);
 164     g_assert(rv == len);
 165 }
 166
 167 static void get_emu_msg(uint8_t *msg, unsigned int *len)
 168 {
 169     unsigned int outpos = 0;
 170
 171     for (;;) {
 172         while (inbuf_pos < inbuf_len) {
 173             uint8_t ch = inbuf[inbuf_pos++];
 174
 175             g_assert(outpos < *len);
 176             if (last_was_aa) {
 177                 assert(ch & 0x10);
 178                 msg[outpos++] = ch & ~0x10;
 179                 last_was_aa = 0;
 180             } else if (ch == 0xaa) {
 181                 last_was_aa = 1;
 182             } else {
 183                 msg[outpos++] = ch;
 184                 if ((ch == 0xa0) || (ch == 0xa1)) {
 185                     /* Message complete */
 186                     *len = outpos;
 187                     goto done;
 188                 }
 189             }
 190         }
 191         read_emu_data();
 192     }
 193  done:
 194 #ifdef DEBUG_TEST
 195     {
 196         unsigned int i;
 197         printf("Msg:");
 198         for (i = 0; i < outpos; i++) {
 199             printf(" %2.2x", msg[i]);
 200         }
 201         printf("\n");
 202     }
 203 #endif
 204     return;
 205 }
 206
 207 static uint8_t
 208 ipmb_checksum(const unsigned char *data, int size, unsigned char start)
 209 {
 210         unsigned char csum = start;
 211
 212         for (; size > 0; size--, data++) {
 213                 csum += *data;
 214         }
 215         return csum;
 216 }
 217
 218 static uint8_t get_dev_id_cmd[] = { 0x18, 0x01 };
 219 static uint8_t get_dev_id_rsp[] = { 0x1c, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
 220                                     0x02, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 };
 221
 222 static uint8_t set_bmc_globals_cmd[] = { 0x18, 0x2e, 0x0f };
 223 static uint8_t set_bmc_globals_rsp[] = { 0x1c, 0x2e, 0x00 };
 224 static uint8_t enable_irq_cmd[] = { 0x05, 0xa1 };
 225
 226 static void emu_msg_handler(void)
 227 {
 228     uint8_t msg[100];
 229     unsigned int msg_len = sizeof(msg);
 230
 231     get_emu_msg(msg, &msg_len);
 232     g_assert(msg_len >= 5);
 233     g_assert(msg[msg_len - 1] == 0xa0);
 234     msg_len--;
 235     g_assert(ipmb_checksum(msg, msg_len, 0) == 0);
 236     msg_len--;
 237     if ((msg[1] == get_dev_id_cmd[0]) && (msg[2] == get_dev_id_cmd[1])) {
 238         memcpy(msg + 1, get_dev_id_rsp, sizeof(get_dev_id_rsp));
 239         msg_len = sizeof(get_dev_id_rsp) + 1;
 240         msg[msg_len] = -ipmb_checksum(msg, msg_len, 0);
 241         msg_len++;
 242         msg[msg_len++] = 0xa0;
 243         write_emu_msg(msg, msg_len);
 244     } else if ((msg[1] == set_bmc_globals_cmd[0]) &&
 245                (msg[2] == set_bmc_globals_cmd[1])) {
 246         write_emu_msg(enable_irq_cmd, sizeof(enable_irq_cmd));
 247         memcpy(msg + 1, set_bmc_globals_rsp, sizeof(set_bmc_globals_rsp));
 248         msg_len = sizeof(set_bmc_globals_rsp) + 1;
 249         msg[msg_len] = -ipmb_checksum(msg, msg_len, 0);
 250         msg_len++;
 251         msg[msg_len++] = 0xa0;
 252         write_emu_msg(msg, msg_len);
 253     } else {
 254         g_assert(0);
 255     }
 256 }
 257
 258 static void bt_cmd(uint8_t *cmd, unsigned int cmd_len,
 259                     uint8_t *rsp, unsigned int *rsp_len)
 260 {
 261     unsigned int i, len, j = 0;
 262     uint8_t seq = 5;
 263
 264     /* Should be idle */
 265     g_assert(bt_get_ctrlreg() == 0);
 266
 267     bt_wait_b_busy();
 268     IPMI_BT_CTLREG_SET_CLR_WR_PTR();
 269     bt_write_buf(cmd_len + 1);
 270     bt_write_buf(cmd[0]);
 271     bt_write_buf(seq);
 272     for (i = 1; i < cmd_len; i++) {
 273         bt_write_buf(cmd[i]);
 274     }
 275     IPMI_BT_CTLREG_SET_H2B_ATN();
 276
 277     emu_msg_handler(); /* We should get a message on the socket here. */
 278
 279     bt_wait_b2h_atn();
 280     if (bt_ints_enabled) {
 281         g_assert((bt_get_irqreg() & 0x02) == 0x02);
 282         g_assert(get_irq(IPMI_IRQ));
 283         bt_write_irqreg(0x03);
 284     } else {
 285         g_assert(!get_irq(IPMI_IRQ));
 286     }
 287     IPMI_BT_CTLREG_SET_H_BUSY();
 288     IPMI_BT_CTLREG_SET_B2H_ATN();
 289     IPMI_BT_CTLREG_SET_CLR_RD_PTR();
 290     len = bt_get_buf();
 291     g_assert(len >= 4);
 292     rsp[0] = bt_get_buf();
 293     assert(bt_get_buf() == seq);
 294     len--;
 295     for (j = 1; j < len; j++) {
 296         rsp[j] = bt_get_buf();
 297     }
 298     IPMI_BT_CTLREG_SET_H_BUSY();
 299     *rsp_len = j;
 300 }
 301
 302
 303 /*
 304  * We should get a connect request and a short message with capabilities.
 305  */
 306 static void test_connect(void)
 307 {
 308     fd_set readfds;
 309     int rv;
 310     int val;
 311     struct timeval tv;
 312     uint8_t msg[100];
 313     unsigned int msglen;
 314     static uint8_t exp1[] = { 0xff, 0x01, 0xa1 }; /* A protocol version */
 315     static uint8_t exp2[] = { 0x08, 0x3f, 0xa1 }; /* A capabilities cmd */
 316
 317     FD_ZERO(&readfds);
 318     FD_SET(emu_lfd, &readfds);
 319     tv.tv_sec = 10;
 320     tv.tv_usec = 0;
 321     rv = select(emu_lfd + 1, &readfds, NULL, NULL, &tv);
 322     g_assert(rv == 1);
 323     emu_fd = accept(emu_lfd, NULL, 0);
 324     if (emu_fd < 0) {
 325         perror("accept");
 326     }
 327     g_assert(emu_fd >= 0);
 328
 329     val = 1;
 330     rv = setsockopt(emu_fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
 331     g_assert(rv != -1);
 332
 333     /* Report our version */
 334     write_emu_msg(exp1, sizeof(exp1));
 335
 336     /* Validate that we get the info we expect. */
 337     msglen = sizeof(msg);
 338     get_emu_msg(msg, &msglen);
 339     g_assert(msglen == sizeof(exp1));
 340     g_assert(memcmp(msg, exp1, msglen) == 0);
 341     msglen = sizeof(msg);
 342     get_emu_msg(msg, &msglen);
 343     g_assert(msglen == sizeof(exp2));
 344     g_assert(memcmp(msg, exp2, msglen) == 0);
 345 }
 346
 347 /*
 348  * Send a get_device_id to do a basic test.
 349  */
 350 static void test_bt_base(void)
 351 {
 352     uint8_t rsp[20];
 353     unsigned int rsplen = sizeof(rsp);
 354
 355     bt_cmd(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen);
 356     g_assert(rsplen == sizeof(get_dev_id_rsp));
 357     g_assert(memcmp(get_dev_id_rsp, rsp, rsplen) == 0);
 358 }
 359
 360 /*
 361  * Enable IRQs for the interface.
 362  */
 363 static void test_enable_irq(void)
 364 {
 365     uint8_t rsp[20];
 366     unsigned int rsplen = sizeof(rsp);
 367
 368     bt_cmd(set_bmc_globals_cmd, sizeof(set_bmc_globals_cmd), rsp, &rsplen);
 369     g_assert(rsplen == sizeof(set_bmc_globals_rsp));
 370     g_assert(memcmp(set_bmc_globals_rsp, rsp, rsplen) == 0);
 371     bt_write_irqreg(0x01);
 372     bt_ints_enabled = 1;
 373 }
 374
 375 /*
 376  * Create a local TCP socket with any port, then save off the port we got.
 377  */
 378 static void open_socket(void)
 379 {
 380     struct sockaddr_in myaddr = {};
 381     socklen_t addrlen;
 382
 383     myaddr.sin_family = AF_INET;
 384     myaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
 385     myaddr.sin_port = 0;
 386     emu_lfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 387     if (emu_lfd == -1) {
 388         perror("socket");
 389         exit(1);
 390     }
 391     if (bind(emu_lfd, (struct sockaddr *) &myaddr, sizeof(myaddr)) == -1) {
 392         perror("bind");
 393         exit(1);
 394     }
 395     addrlen = sizeof(myaddr);
 396     if (getsockname(emu_lfd, (struct sockaddr *) &myaddr , &addrlen) == -1) {
 397         perror("getsockname");
 398         exit(1);
 399     }
 400     emu_port = ntohs(myaddr.sin_port);
 401     assert(listen(emu_lfd, 1) != -1);
 402 }
 403
 404 int main(int argc, char **argv)
 405 {
 406     int ret;
 407
 408     open_socket();
 409
 410     /* Run the tests */
 411     g_test_init(&argc, &argv, NULL);
 412
 413     global_qtest = qtest_initf(
 414         " -chardev socket,id=ipmi0,host=127.0.0.1,port=%d,reconnect=10"
 415         " -device ipmi-bmc-extern,chardev=ipmi0,id=bmc0"
 416         " -device isa-ipmi-bt,bmc=bmc0", emu_port);
 417     qtest_irq_intercept_in(global_qtest, "ioapic");
 418     qtest_add_func("/ipmi/extern/connect", test_connect);
 419     qtest_add_func("/ipmi/extern/bt_base", test_bt_base);
 420     qtest_add_func("/ipmi/extern/bt_enable_irq", test_enable_irq);
 421     qtest_add_func("/ipmi/extern/bt_base_irq", test_bt_base);
 422     ret = g_test_run();
 423     qtest_quit(global_qtest);
 424
 425     return ret;
 426 }