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 #include <glib.h>
  33
  34 #include "libqtest.h"
  35 #include "qemu-common.h"
  36
  37 #define IPMI_IRQ        5
  38
  39 #define IPMI_BT_BASE    0xe4
  40
  41 #define IPMI_BT_CTLREG_CLR_WR_PTR  0
  42 #define IPMI_BT_CTLREG_CLR_RD_PTR  1
  43 #define IPMI_BT_CTLREG_H2B_ATN     2
  44 #define IPMI_BT_CTLREG_B2H_ATN     3
  45 #define IPMI_BT_CTLREG_SMS_ATN     4
  46 #define IPMI_BT_CTLREG_H_BUSY      6
  47 #define IPMI_BT_CTLREG_B_BUSY      7
  48
  49 #define IPMI_BT_CTLREG_GET(b) ((bt_get_ctrlreg() >> (b)) & 1)
  50 #define IPMI_BT_CTLREG_GET_H2B_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_H2B_ATN)
  51 #define IPMI_BT_CTLREG_GET_B2H_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_B2H_ATN)
  52 #define IPMI_BT_CTLREG_GET_SMS_ATN() IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_SMS_ATN)
  53 #define IPMI_BT_CTLREG_GET_H_BUSY()  IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_H_BUSY)
  54 #define IPMI_BT_CTLREG_GET_B_BUSY()  IPMI_BT_CTLREG_GET(IPMI_BT_CTLREG_B_BUSY)
  55
  56 #define IPMI_BT_CTLREG_SET(b) bt_write_ctrlreg(1 << (b))
  57 #define IPMI_BT_CTLREG_SET_CLR_WR_PTR() IPMI_BT_CTLREG_SET( \
  58                                                 IPMI_BT_CTLREG_CLR_WR_PTR)
  59 #define IPMI_BT_CTLREG_SET_CLR_RD_PTR() IPMI_BT_CTLREG_SET( \
  60                                                 IPMI_BT_CTLREG_CLR_RD_PTR)
  61 #define IPMI_BT_CTLREG_SET_H2B_ATN()  IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_H2B_ATN)
  62 #define IPMI_BT_CTLREG_SET_B2H_ATN()  IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_B2H_ATN)
  63 #define IPMI_BT_CTLREG_SET_SMS_ATN()  IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_SMS_ATN)
  64 #define IPMI_BT_CTLREG_SET_H_BUSY()   IPMI_BT_CTLREG_SET(IPMI_BT_CTLREG_H_BUSY)
  65
  66 static int bt_ints_enabled;
  67
  68 static uint8_t bt_get_ctrlreg(void)
  69 {
  70     return inb(IPMI_BT_BASE);
  71 }
  72
  73 static void bt_write_ctrlreg(uint8_t val)
  74 {
  75     outb(IPMI_BT_BASE, val);
  76 }
  77
  78 static uint8_t bt_get_buf(void)
  79 {
  80     return inb(IPMI_BT_BASE + 1);
  81 }
  82
  83 static void bt_write_buf(uint8_t val)
  84 {
  85     outb(IPMI_BT_BASE + 1, val);
  86 }
  87
  88 static uint8_t bt_get_irqreg(void)
  89 {
  90     return inb(IPMI_BT_BASE + 2);
  91 }
  92
  93 static void bt_write_irqreg(uint8_t val)
  94 {
  95     outb(IPMI_BT_BASE + 2, val);
  96 }
  97
  98 static void bt_wait_b_busy(void)
  99 {
 100     unsigned int count = 1000;
 101     while (IPMI_BT_CTLREG_GET_B_BUSY() != 0) {
 102         g_assert(--count != 0);
 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     }
 112 }
 113
 114
 115 static int emu_lfd;
 116 static int emu_fd;
 117 static in_port_t emu_port;
 118 static uint8_t inbuf[100];
 119 static unsigned int inbuf_len;
 120 static unsigned int inbuf_pos;
 121 static int last_was_aa;
 122
 123 static void read_emu_data(void)
 124 {
 125     fd_set readfds;
 126     int rv;
 127     struct timeval tv;
 128
 129     FD_ZERO(&readfds);
 130     FD_SET(emu_fd, &readfds);
 131     tv.tv_sec = 10;
 132     tv.tv_usec = 0;
 133     rv = select(emu_fd + 1, &readfds, NULL, NULL, &tv);
 134     if (rv == -1) {
 135         perror("select");
 136     }
 137     g_assert(rv == 1);
 138     rv = read(emu_fd, inbuf, sizeof(inbuf));
 139     if (rv == -1) {
 140         perror("read");
 141     }
 142     g_assert(rv > 0);
 143     inbuf_len = rv;
 144     inbuf_pos = 0;
 145 }
 146
 147 static void write_emu_msg(uint8_t *msg, unsigned int len)
 148 {
 149     int rv;
 150
 151 #ifdef DEBUG_TEST
 152     {
 153         unsigned int i;
 154         printf("sending:");
 155         for (i = 0; i < len; i++) {
 156             printf(" %2.2x", msg[i]);
 157         }
 158         printf("\n");
 159     }
 160 #endif
 161     rv = write(emu_fd, msg, len);
 162     g_assert(rv == len);
 163 }
 164
 165 static void get_emu_msg(uint8_t *msg, unsigned int *len)
 166 {
 167     unsigned int outpos = 0;
 168
 169     for (;;) {
 170         while (inbuf_pos < inbuf_len) {
 171             uint8_t ch = inbuf[inbuf_pos++];
 172
 173             g_assert(outpos < *len);
 174             if (last_was_aa) {
 175                 assert(ch & 0x10);
 176                 msg[outpos++] = ch & ~0x10;
 177                 last_was_aa = 0;
 178             } else if (ch == 0xaa) {
 179                 last_was_aa = 1;
 180             } else {
 181                 msg[outpos++] = ch;
 182                 if ((ch == 0xa0) || (ch == 0xa1)) {
 183                     /* Message complete */
 184                     *len = outpos;
 185                     goto done;
 186                 }
 187             }
 188         }
 189         read_emu_data();
 190     }
 191  done:
 192 #ifdef DEBUG_TEST
 193     {
 194         unsigned int i;
 195         printf("Msg:");
 196         for (i = 0; i < outpos; i++) {
 197             printf(" %2.2x", msg[i]);
 198         }
 199         printf("\n");
 200     }
 201 #endif
 202     return;
 203 }
 204
 205 static uint8_t
 206 ipmb_checksum(const unsigned char *data, int size, unsigned char start)
 207 {
 208         unsigned char csum = start;
 209
 210         for (; size > 0; size--, data++) {
 211                 csum += *data;
 212         }
 213         return csum;
 214 }
 215
 216 static uint8_t get_dev_id_cmd[] = { 0x18, 0x01 };
 217 static uint8_t get_dev_id_rsp[] = { 0x1c, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
 218                                     0x02, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00 };
 219
 220 static uint8_t set_bmc_globals_cmd[] = { 0x18, 0x2e, 0x0f };
 221 static uint8_t set_bmc_globals_rsp[] = { 0x1c, 0x2e, 0x00 };
 222 static uint8_t enable_irq_cmd[] = { 0x05, 0xa1 };
 223
 224 static void emu_msg_handler(void)
 225 {
 226     uint8_t msg[100];
 227     unsigned int msg_len = sizeof(msg);
 228
 229     get_emu_msg(msg, &msg_len);
 230     g_assert(msg_len >= 5);
 231     g_assert(msg[msg_len - 1] == 0xa0);
 232     msg_len--;
 233     g_assert(ipmb_checksum(msg, msg_len, 0) == 0);
 234     msg_len--;
 235     if ((msg[1] == get_dev_id_cmd[0]) && (msg[2] == get_dev_id_cmd[1])) {
 236         memcpy(msg + 1, get_dev_id_rsp, sizeof(get_dev_id_rsp));
 237         msg_len = sizeof(get_dev_id_rsp) + 1;
 238         msg[msg_len] = -ipmb_checksum(msg, msg_len, 0);
 239         msg_len++;
 240         msg[msg_len++] = 0xa0;
 241         write_emu_msg(msg, msg_len);
 242     } else if ((msg[1] == set_bmc_globals_cmd[0]) &&
 243                (msg[2] == set_bmc_globals_cmd[1])) {
 244         memcpy(msg + 1, set_bmc_globals_rsp, sizeof(set_bmc_globals_rsp));
 245         msg_len = sizeof(set_bmc_globals_rsp) + 1;
 246         msg[msg_len] = -ipmb_checksum(msg, msg_len, 0);
 247         msg_len++;
 248         msg[msg_len++] = 0xa0;
 249         write_emu_msg(msg, msg_len);
 250         write_emu_msg(enable_irq_cmd, sizeof(enable_irq_cmd));
 251     } else {
 252         g_assert(0);
 253     }
 254 }
 255
 256 static void bt_cmd(uint8_t *cmd, unsigned int cmd_len,
 257                     uint8_t *rsp, unsigned int *rsp_len)
 258 {
 259     unsigned int i, len, j = 0;
 260     uint8_t seq = 5;
 261
 262     /* Should be idle */
 263     g_assert(bt_get_ctrlreg() == 0);
 264
 265     bt_wait_b_busy();
 266     IPMI_BT_CTLREG_SET_CLR_WR_PTR();
 267     bt_write_buf(cmd_len + 1);
 268     bt_write_buf(cmd[0]);
 269     bt_write_buf(seq);
 270     for (i = 1; i < cmd_len; i++) {
 271         bt_write_buf(cmd[i]);
 272     }
 273     IPMI_BT_CTLREG_SET_H2B_ATN();
 274
 275     emu_msg_handler(); /* We should get a message on the socket here. */
 276
 277     bt_wait_b2h_atn();
 278     if (bt_ints_enabled) {
 279         g_assert((bt_get_irqreg() & 0x02) == 0x02);
 280         g_assert(get_irq(IPMI_IRQ));
 281         bt_write_irqreg(0x03);
 282     } else {
 283         g_assert(!get_irq(IPMI_IRQ));
 284     }
 285     IPMI_BT_CTLREG_SET_H_BUSY();
 286     IPMI_BT_CTLREG_SET_B2H_ATN();
 287     IPMI_BT_CTLREG_SET_CLR_RD_PTR();
 288     len = bt_get_buf();
 289     g_assert(len >= 4);
 290     rsp[0] = bt_get_buf();
 291     assert(bt_get_buf() == seq);
 292     len--;
 293     for (j = 1; j < len; j++) {
 294         rsp[j] = bt_get_buf();
 295     }
 296     IPMI_BT_CTLREG_SET_H_BUSY();
 297     *rsp_len = j;
 298 }
 299
 300
 301 /*
 302  * We should get a connect request and a short message with capabilities.
 303  */
 304 static void test_connect(void)
 305 {
 306     fd_set readfds;
 307     int rv;
 308     int val;
 309     struct timeval tv;
 310     uint8_t msg[100];
 311     unsigned int msglen;
 312     static uint8_t exp1[] = { 0xff, 0x01, 0xa1 }; /* A protocol version */
 313     static uint8_t exp2[] = { 0x08, 0x1f, 0xa1 }; /* A capabilities cmd */
 314
 315     FD_ZERO(&readfds);
 316     FD_SET(emu_lfd, &readfds);
 317     tv.tv_sec = 10;
 318     tv.tv_usec = 0;
 319     rv = select(emu_lfd + 1, &readfds, NULL, NULL, &tv);
 320     g_assert(rv == 1);
 321     emu_fd = accept(emu_lfd, NULL, 0);
 322     if (emu_fd < 0) {
 323         perror("accept");
 324     }
 325     g_assert(emu_fd >= 0);
 326
 327     val = 1;
 328     rv = setsockopt(emu_fd, IPPROTO_TCP, TCP_NODELAY, &val, sizeof(val));
 329     g_assert(rv != -1);
 330
 331     /* Report our version */
 332     write_emu_msg(exp1, sizeof(exp1));
 333
 334     /* Validate that we get the info we expect. */
 335     msglen = sizeof(msg);
 336     get_emu_msg(msg, &msglen);
 337     g_assert(msglen == sizeof(exp1));
 338     g_assert(memcmp(msg, exp1, msglen) == 0);
 339     msglen = sizeof(msg);
 340     get_emu_msg(msg, &msglen);
 341     g_assert(msglen == sizeof(exp2));
 342     g_assert(memcmp(msg, exp2, msglen) == 0);
 343 }
 344
 345 /*
 346  * Send a get_device_id to do a basic test.
 347  */
 348 static void test_bt_base(void)
 349 {
 350     uint8_t rsp[20];
 351     unsigned int rsplen = sizeof(rsp);
 352
 353     bt_cmd(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen);
 354     g_assert(rsplen == sizeof(get_dev_id_rsp));
 355     g_assert(memcmp(get_dev_id_rsp, rsp, rsplen) == 0);
 356 }
 357
 358 /*
 359  * Enable IRQs for the interface.
 360  */
 361 static void test_enable_irq(void)
 362 {
 363     uint8_t rsp[20];
 364     unsigned int rsplen = sizeof(rsp);
 365
 366     bt_cmd(set_bmc_globals_cmd, sizeof(set_bmc_globals_cmd), rsp, &rsplen);
 367     g_assert(rsplen == sizeof(set_bmc_globals_rsp));
 368     g_assert(memcmp(set_bmc_globals_rsp, rsp, rsplen) == 0);
 369     bt_write_irqreg(0x01);
 370     bt_ints_enabled = 1;
 371 }
 372
 373 /*
 374  * Create a local TCP socket with any port, then save off the port we got.
 375  */
 376 static void open_socket(void)
 377 {
 378     struct sockaddr_in myaddr;
 379     socklen_t addrlen;
 380
 381     myaddr.sin_family = AF_INET;
 382     myaddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
 383     myaddr.sin_port = 0;
 384     emu_lfd = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
 385     if (emu_lfd == -1) {
 386         perror("socket");
 387         exit(1);
 388     }
 389     if (bind(emu_lfd, (struct sockaddr *) &myaddr, sizeof(myaddr)) == -1) {
 390         perror("bind");
 391         exit(1);
 392     }
 393     addrlen = sizeof(myaddr);
 394     if (getsockname(emu_lfd, (struct sockaddr *) &myaddr , &addrlen) == -1) {
 395         perror("getsockname");
 396         exit(1);
 397     }
 398     emu_port = ntohs(myaddr.sin_port);
 399     assert(listen(emu_lfd, 1) != -1);
 400 }
 401
 402 int main(int argc, char **argv)
 403 {
 404     const char *arch = qtest_get_arch();
 405     char *cmdline;
 406     int ret;
 407
 408     /* Check architecture */
 409     if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) {
 410         g_test_message("Skipping test for non-x86\n");
 411         return 0;
 412     }
 413
 414     open_socket();
 415
 416     /* Run the tests */
 417     g_test_init(&argc, &argv, NULL);
 418
 419     cmdline = g_strdup_printf("-vnc none"
 420           " -chardev socket,id=ipmi0,host=localhost,port=%d,reconnect=10"
 421           " -device ipmi-bmc-extern,chardev=ipmi0,id=bmc0"
 422           " -device isa-ipmi-bt,bmc=bmc0", emu_port);
 423     qtest_start(cmdline);
 424     qtest_irq_intercept_in(global_qtest, "ioapic");
 425     qtest_add_func("/ipmi/extern/connect", test_connect);
 426     qtest_add_func("/ipmi/extern/bt_base", test_bt_base);
 427     qtest_add_func("/ipmi/extern/bt_enable_irq", test_enable_irq);
 428     qtest_add_func("/ipmi/extern/bt_base_irq", test_bt_base);
 429     ret = g_test_run();
 430     qtest_quit(global_qtest);
 431
 432     return ret;
 433 }