tests/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.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     }
 103 }
 104
 105 static void bt_wait_b2h_atn(void)
 106 {
 107     unsigned int count = 1000;
 108     while (IPMI_BT_CTLREG_GET_B2H_ATN() == 0) {
 109         g_assert(--count != 0);
 110     }
 111 }
 112
 113
 114 static int emu_lfd;
 115 static int emu_fd;
 116 static in_port_t emu_port;
 117 static uint8_t inbuf[100];
 118 static unsigned int inbuf_len;
 119 static unsigned int inbuf_pos;
 120 static int last_was_aa;
 121
 122 static void read_emu_data(void)
 123 {
 124     fd_set readfds;
 125     int rv;
 126     struct timeval tv;
 127
 128     FD_ZERO(&readfds);
 129     FD_SET(emu_fd, &readfds);
 130     tv.tv_sec = 10;
 131     tv.tv_usec = 0;
 132     rv = select(emu_fd + 1, &readfds, NULL, NULL, &tv);
 133     if (rv == -1) {
 134         perror("select");
 135     }
 136     g_assert(rv == 1);
 137     rv = read(emu_fd, inbuf, sizeof(inbuf));
 138     if (rv == -1) {
 139         perror("read");
 140     }
 141     g_assert(rv > 0);
 142     inbuf_len = rv;
 143     inbuf_pos = 0;
 144 }
 145
 146 static void write_emu_msg(uint8_t *msg, unsigned int len)
 147 {
 148     int rv;
 149
 150 #ifdef DEBUG_TEST
 151     {
 152         unsigned int i;
 153         printf("sending:");
 154         for (i = 0; i < len; i++) {
 155             printf(" %2.2x", msg[i]);
 156         }
 157         printf("\n");
 158     }
 159 #endif
 160     rv = write(emu_fd, msg, len);
 161     g_assert(rv == len);
 162 }
 163
 164 static void get_emu_msg(uint8_t *msg, unsigned int *len)
 165 {
 166     unsigned int outpos = 0;
 167
 168     for (;;) {
 169         while (inbuf_pos < inbuf_len) {
 170             uint8_t ch = inbuf[inbuf_pos++];
 171
 172             g_assert(outpos < *len);
 173             if (last_was_aa) {
 174                 assert(ch & 0x10);
 175                 msg[outpos++] = ch & ~0x10;
 176                 last_was_aa = 0;
 177             } else if (ch == 0xaa) {
 178                 last_was_aa = 1;
 179             } else {
 180                 msg[outpos++] = ch;
 181                 if ((ch == 0xa0) || (ch == 0xa1)) {
 182                     /* Message complete */
 183                     *len = outpos;
 184                     goto done;
 185                 }
 186             }
 187         }
 188         read_emu_data();
 189     }
 190  done:
 191 #ifdef DEBUG_TEST
 192     {
 193         unsigned int i;
 194         printf("Msg:");
 195         for (i = 0; i < outpos; i++) {
 196             printf(" %2.2x", msg[i]);
 197         }
 198         printf("\n");
 199     }
 200 #endif
 201     return;
 202 }
 203
 204 static uint8_t
 205 ipmb_checksum(const unsigned char *data, int size, unsigned char start)
 206 {
 207         unsigned char csum = start;
 208
 209         for (; size > 0; size--, data++) {
 210                 csum += *data;
 211         }
 212         return csum;
 213 }
 214
 215 static uint8_t get_dev_id_cmd[] = { 0x18, 0x01 };
 216 static uint8_t get_dev_id_rsp[] = { 0x1c, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
 217                                     0x02, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 };
 218
 219 static uint8_t set_bmc_globals_cmd[] = { 0x18, 0x2e, 0x0f };
 220 static uint8_t set_bmc_globals_rsp[] = { 0x1c, 0x2e, 0x00 };
 221 static uint8_t enable_irq_cmd[] = { 0x05, 0xa1 };
 222
 223 static void emu_msg_handler(void)
 224 {
 225     uint8_t msg[100];
 226     unsigned int msg_len = sizeof(msg);
 227
 228     get_emu_msg(msg, &msg_len);
 229     g_assert(msg_len >= 5);
 230     g_assert(msg[msg_len - 1] == 0xa0);
 231     msg_len--;
 232     g_assert(ipmb_checksum(msg, msg_len, 0) == 0);
 233     msg_len--;
 234     if ((msg[1] == get_dev_id_cmd[0]) && (msg[2] == get_dev_id_cmd[1])) {
 235         memcpy(msg + 1, get_dev_id_rsp, sizeof(get_dev_id_rsp));
 236         msg_len = sizeof(get_dev_id_rsp) + 1;
 237         msg[msg_len] = -ipmb_checksum(msg, msg_len, 0);
 238         msg_len++;
 239         msg[msg_len++] = 0xa0;
 240         write_emu_msg(msg, msg_len);
 241     } else if ((msg[1] == set_bmc_globals_cmd[0]) &&
 242                (msg[2] == set_bmc_globals_cmd[1])) {
 243         memcpy(msg + 1, set_bmc_globals_rsp, sizeof(set_bmc_globals_rsp));
 244         msg_len = sizeof(set_bmc_globals_rsp) + 1;
 245         msg[msg_len] = -ipmb_checksum(msg, msg_len, 0);
 246         msg_len++;
 247         msg[msg_len++] = 0xa0;
 248         write_emu_msg(msg, msg_len);
 249         write_emu_msg(enable_irq_cmd, sizeof(enable_irq_cmd));
 250     } else {
 251         g_assert(0);
 252     }
 253 }
 254
 255 static void bt_cmd(uint8_t *cmd, unsigned int cmd_len,
 256                     uint8_t *rsp, unsigned int *rsp_len)
 257 {
 258     unsigned int i, len, j = 0;
 259     uint8_t seq = 5;
 260
 261     /* Should be idle */
 262     g_assert(bt_get_ctrlreg() == 0);
 263
 264     bt_wait_b_busy();
 265     IPMI_BT_CTLREG_SET_CLR_WR_PTR();
 266     bt_write_buf(cmd_len + 1);
 267     bt_write_buf(cmd[0]);
 268     bt_write_buf(seq);
 269     for (i = 1; i < cmd_len; i++) {
 270         bt_write_buf(cmd[i]);
 271     }
 272     IPMI_BT_CTLREG_SET_H2B_ATN();
 273
 274     emu_msg_handler(); /* We should get a message on the socket here. */
 275
 276     bt_wait_b2h_atn();
 277     if (bt_ints_enabled) {
 278         g_assert((bt_get_irqreg() & 0x02) == 0x02);
 279         g_assert(get_irq(IPMI_IRQ));
 280         bt_write_irqreg(0x03);
 281     } else {
 282         g_assert(!get_irq(IPMI_IRQ));
 283     }
 284     IPMI_BT_CTLREG_SET_H_BUSY();
 285     IPMI_BT_CTLREG_SET_B2H_ATN();
 286     IPMI_BT_CTLREG_SET_CLR_RD_PTR();
 287     len = bt_get_buf();
 288     g_assert(len >= 4);
 289     rsp[0] = bt_get_buf();
 290     assert(bt_get_buf() == seq);
 291     len--;
 292     for (j = 1; j < len; j++) {
 293         rsp[j] = bt_get_buf();
 294     }
 295     IPMI_BT_CTLREG_SET_H_BUSY();
 296     *rsp_len = j;
 297 }
 298
 299
 300 /*
 301  * We should get a connect request and a short message with capabilities.
 302  */
 303 static void test_connect(void)
 304 {
 305     fd_set readfds;
 306     int rv;
 307     int val;
 308     struct timeval tv;
 309     uint8_t msg[100];
 310     unsigned int msglen;
 311     static uint8_t exp1[] = { 0xff, 0x01, 0xa1 }; /* A protocol version */
 312     static uint8_t exp2[] = { 0x08, 0x3f, 0xa1 }; /* A capabilities cmd */
 313
 314     FD_ZERO(&readfds);
 315     FD_SET(emu_lfd, &readfds);
 316     tv.tv_sec = 10;
 317     tv.tv_usec = 0;
 318     rv = select(emu_lfd + 1, &readfds, NULL, NULL, &tv);
 319     g_assert(rv == 1);
 320     emu_fd = accept(emu_lfd, NULL, 0);
 321     if (emu_fd < 0) {
 322         perror("accept");
 323     }
 324     g_assert(emu_fd >= 0);
 325
 326     val = 1;
 327     rv = setsockopt(emu_fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
 328     g_assert(rv != -1);
 329
 330     /* Report our version */
 331     write_emu_msg(exp1, sizeof(exp1));
 332
 333     /* Validate that we get the info we expect. */
 334     msglen = sizeof(msg);
 335     get_emu_msg(msg, &msglen);
 336     g_assert(msglen == sizeof(exp1));
 337     g_assert(memcmp(msg, exp1, msglen) == 0);
 338     msglen = sizeof(msg);
 339     get_emu_msg(msg, &msglen);
 340     g_assert(msglen == sizeof(exp2));
 341     g_assert(memcmp(msg, exp2, msglen) == 0);
 342 }
 343
 344 /*
 345  * Send a get_device_id to do a basic test.
 346  */
 347 static void test_bt_base(void)
 348 {
 349     uint8_t rsp[20];
 350     unsigned int rsplen = sizeof(rsp);
 351
 352     bt_cmd(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen);
 353     g_assert(rsplen == sizeof(get_dev_id_rsp));
 354     g_assert(memcmp(get_dev_id_rsp, rsp, rsplen) == 0);
 355 }
 356
 357 /*
 358  * Enable IRQs for the interface.
 359  */
 360 static void test_enable_irq(void)
 361 {
 362     uint8_t rsp[20];
 363     unsigned int rsplen = sizeof(rsp);
 364
 365     bt_cmd(set_bmc_globals_cmd, sizeof(set_bmc_globals_cmd), rsp, &rsplen);
 366     g_assert(rsplen == sizeof(set_bmc_globals_rsp));
 367     g_assert(memcmp(set_bmc_globals_rsp, rsp, rsplen) == 0);
 368     bt_write_irqreg(0x01);
 369     bt_ints_enabled = 1;
 370 }
 371
 372 /*
 373  * Create a local TCP socket with any port, then save off the port we got.
 374  */
 375 static void open_socket(void)
 376 {
 377     struct sockaddr_in myaddr;
 378     socklen_t addrlen;
 379
 380     myaddr.sin_family = AF_INET;
 381     myaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
 382     myaddr.sin_port = 0;
 383     emu_lfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 384     if (emu_lfd == -1) {
 385         perror("socket");
 386         exit(1);
 387     }
 388     if (bind(emu_lfd, (struct sockaddr *) &myaddr, sizeof(myaddr)) == -1) {
 389         perror("bind");
 390         exit(1);
 391     }
 392     addrlen = sizeof(myaddr);
 393     if (getsockname(emu_lfd, (struct sockaddr *) &myaddr , &addrlen) == -1) {
 394         perror("getsockname");
 395         exit(1);
 396     }
 397     emu_port = ntohs(myaddr.sin_port);
 398     assert(listen(emu_lfd, 1) != -1);
 399 }
 400
 401 int main(int argc, char **argv)
 402 {
 403     int ret;
 404
 405     open_socket();
 406
 407     /* Run the tests */
 408     g_test_init(&argc, &argv, NULL);
 409
 410     global_qtest = qtest_initf(
 411         " -chardev socket,id=ipmi0,host=localhost,port=%d,reconnect=10"
 412         " -device ipmi-bmc-extern,chardev=ipmi0,id=bmc0"
 413         " -device isa-ipmi-bt,bmc=bmc0", emu_port);
 414     qtest_irq_intercept_in(global_qtest, "ioapic");
 415     qtest_add_func("/ipmi/extern/connect", test_connect);
 416     qtest_add_func("/ipmi/extern/bt_base", test_bt_base);
 417     qtest_add_func("/ipmi/extern/bt_enable_irq", test_enable_irq);
 418     qtest_add_func("/ipmi/extern/bt_base_irq", test_bt_base);
 419     ret = g_test_run();
 420     qtest_quit(global_qtest);
 421
 422     return ret;
 423 }