tests/ipmi-kcs-test.c

   1 /*
   2  * IPMI KCS test cases, using the local interface.
   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
  28 #include "libqtest.h"
  29
  30 #define IPMI_IRQ        5
  31
  32 #define IPMI_KCS_BASE   0xca2
  33
  34 #define IPMI_KCS_STATUS_ABORT           0x60
  35 #define IPMI_KCS_CMD_WRITE_START        0x61
  36 #define IPMI_KCS_CMD_WRITE_END          0x62
  37 #define IPMI_KCS_CMD_READ               0x68
  38
  39 #define IPMI_KCS_ABORTED_BY_CMD         0x01
  40
  41 #define IPMI_KCS_CMDREG_GET_STATE() ((kcs_get_cmdreg() >> 6) & 3)
  42 #define IPMI_KCS_STATE_IDLE     0
  43 #define IPMI_KCS_STATE_READ     1
  44 #define IPMI_KCS_STATE_WRITE    2
  45 #define IPMI_KCS_STATE_ERROR    3
  46 #define IPMI_KCS_CMDREG_GET_CD()    ((kcs_get_cmdreg() >> 3) & 1)
  47 #define IPMI_KCS_CMDREG_GET_ATN()   ((kcs_get_cmdreg() >> 2) & 1)
  48 #define IPMI_KCS_CMDREG_GET_IBF()   ((kcs_get_cmdreg() >> 1) & 1)
  49 #define IPMI_KCS_CMDREG_GET_OBF()   ((kcs_get_cmdreg() >> 0) & 1)
  50
  51 static int kcs_ints_enabled;
  52
  53 static uint8_t kcs_get_cmdreg(void)
  54 {
  55     return inb(IPMI_KCS_BASE + 1);
  56 }
  57
  58 static void kcs_write_cmdreg(uint8_t val)
  59 {
  60     outb(IPMI_KCS_BASE + 1, val);
  61 }
  62
  63 static uint8_t kcs_get_datareg(void)
  64 {
  65     return inb(IPMI_KCS_BASE);
  66 }
  67
  68 static void kcs_write_datareg(uint8_t val)
  69 {
  70     outb(IPMI_KCS_BASE, val);
  71 }
  72
  73 static void kcs_wait_ibf(void)
  74 {
  75     unsigned int count = 1000;
  76     while (IPMI_KCS_CMDREG_GET_IBF() != 0) {
  77         g_assert(--count != 0);
  78     }
  79 }
  80
  81 static void kcs_wait_obf(void)
  82 {
  83     unsigned int count = 1000;
  84     while (IPMI_KCS_CMDREG_GET_OBF() == 0) {
  85         g_assert(--count != 0);
  86     }
  87 }
  88
  89 static void kcs_clear_obf(void)
  90 {
  91     if (kcs_ints_enabled) {
  92         g_assert(get_irq(IPMI_IRQ));
  93     } else {
  94         g_assert(!get_irq(IPMI_IRQ));
  95     }
  96     g_assert(IPMI_KCS_CMDREG_GET_OBF() == 1);
  97     kcs_get_datareg();
  98     g_assert(IPMI_KCS_CMDREG_GET_OBF() == 0);
  99     g_assert(!get_irq(IPMI_IRQ));
 100 }
 101
 102 static void kcs_check_state(uint8_t state)
 103 {
 104     g_assert(IPMI_KCS_CMDREG_GET_STATE() == state);
 105 }
 106
 107 static void kcs_cmd(uint8_t *cmd, unsigned int cmd_len,
 108                     uint8_t *rsp, unsigned int *rsp_len)
 109 {
 110     unsigned int i, j = 0;
 111
 112     /* Should be idle */
 113     g_assert(kcs_get_cmdreg() == 0);
 114
 115     kcs_write_cmdreg(IPMI_KCS_CMD_WRITE_START);
 116     kcs_wait_ibf();
 117     kcs_check_state(IPMI_KCS_STATE_WRITE);
 118     kcs_clear_obf();
 119     for (i = 0; i < cmd_len; i++) {
 120         kcs_write_datareg(cmd[i]);
 121         kcs_wait_ibf();
 122         kcs_check_state(IPMI_KCS_STATE_WRITE);
 123         kcs_clear_obf();
 124     }
 125     kcs_write_cmdreg(IPMI_KCS_CMD_WRITE_END);
 126     kcs_wait_ibf();
 127     kcs_check_state(IPMI_KCS_STATE_WRITE);
 128     kcs_clear_obf();
 129     kcs_write_datareg(0);
 130  next_read_byte:
 131     kcs_wait_ibf();
 132     switch (IPMI_KCS_CMDREG_GET_STATE()) {
 133     case IPMI_KCS_STATE_READ:
 134         kcs_wait_obf();
 135         g_assert(j < *rsp_len);
 136         rsp[j++] = kcs_get_datareg();
 137         kcs_write_datareg(IPMI_KCS_CMD_READ);
 138         goto next_read_byte;
 139         break;
 140
 141     case IPMI_KCS_STATE_IDLE:
 142         kcs_wait_obf();
 143         kcs_get_datareg();
 144         break;
 145
 146     default:
 147         g_assert(0);
 148     }
 149     *rsp_len = j;
 150 }
 151
 152 static void kcs_abort(uint8_t *cmd, unsigned int cmd_len,
 153                       uint8_t *rsp, unsigned int *rsp_len)
 154 {
 155     unsigned int i, j = 0;
 156     unsigned int retries = 4;
 157
 158     /* Should be idle */
 159     g_assert(kcs_get_cmdreg() == 0);
 160
 161     kcs_write_cmdreg(IPMI_KCS_CMD_WRITE_START);
 162     kcs_wait_ibf();
 163     kcs_check_state(IPMI_KCS_STATE_WRITE);
 164     kcs_clear_obf();
 165     for (i = 0; i < cmd_len; i++) {
 166         kcs_write_datareg(cmd[i]);
 167         kcs_wait_ibf();
 168         kcs_check_state(IPMI_KCS_STATE_WRITE);
 169         kcs_clear_obf();
 170     }
 171     kcs_write_cmdreg(IPMI_KCS_CMD_WRITE_END);
 172     kcs_wait_ibf();
 173     kcs_check_state(IPMI_KCS_STATE_WRITE);
 174     kcs_clear_obf();
 175     kcs_write_datareg(0);
 176     kcs_wait_ibf();
 177     switch (IPMI_KCS_CMDREG_GET_STATE()) {
 178     case IPMI_KCS_STATE_READ:
 179         kcs_wait_obf();
 180         g_assert(j < *rsp_len);
 181         rsp[j++] = kcs_get_datareg();
 182         kcs_write_datareg(IPMI_KCS_CMD_READ);
 183         break;
 184
 185     default:
 186         g_assert(0);
 187     }
 188
 189     /* Start the abort here */
 190  retry_abort:
 191     g_assert(retries > 0);
 192
 193     kcs_wait_ibf();
 194     kcs_write_cmdreg(IPMI_KCS_STATUS_ABORT);
 195     kcs_wait_ibf();
 196     kcs_clear_obf();
 197     kcs_write_datareg(0);
 198     kcs_wait_ibf();
 199     if (IPMI_KCS_CMDREG_GET_STATE() != IPMI_KCS_STATE_READ) {
 200         retries--;
 201         goto retry_abort;
 202     }
 203     kcs_wait_obf();
 204     rsp[0] = kcs_get_datareg();
 205     kcs_write_datareg(IPMI_KCS_CMD_READ);
 206     kcs_wait_ibf();
 207     if (IPMI_KCS_CMDREG_GET_STATE() != IPMI_KCS_STATE_IDLE) {
 208         retries--;
 209         goto retry_abort;
 210     }
 211     kcs_wait_obf();
 212     kcs_clear_obf();
 213
 214     *rsp_len = j;
 215 }
 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, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00 };
 221
 222 /*
 223  * Send a get_device_id to do a basic test.
 224  */
 225 static void test_kcs_base(void)
 226 {
 227     uint8_t rsp[20];
 228     unsigned int rsplen = sizeof(rsp);
 229
 230     kcs_cmd(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen);
 231     g_assert(rsplen == sizeof(get_dev_id_rsp));
 232     g_assert(memcmp(get_dev_id_rsp, rsp, rsplen) == 0);
 233 }
 234
 235 /*
 236  * Abort a kcs operation while reading
 237  */
 238 static void test_kcs_abort(void)
 239 {
 240     uint8_t rsp[20];
 241     unsigned int rsplen = sizeof(rsp);
 242
 243     kcs_abort(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen);
 244     g_assert(rsp[0] == IPMI_KCS_ABORTED_BY_CMD);
 245 }
 246
 247 static uint8_t set_bmc_globals_cmd[] = { 0x18, 0x2e, 0x0f };
 248 static uint8_t set_bmc_globals_rsp[] = { 0x1c, 0x2e, 0x00 };
 249
 250 /*
 251  * Enable interrupts
 252  */
 253 static void test_enable_irq(void)
 254 {
 255     uint8_t rsp[20];
 256     unsigned int rsplen = sizeof(rsp);
 257
 258     kcs_cmd(set_bmc_globals_cmd, sizeof(set_bmc_globals_cmd), rsp, &rsplen);
 259     g_assert(rsplen == sizeof(set_bmc_globals_rsp));
 260     g_assert(memcmp(set_bmc_globals_rsp, rsp, rsplen) == 0);
 261     kcs_ints_enabled = 1;
 262 }
 263
 264 int main(int argc, char **argv)
 265 {
 266     const char *arch = qtest_get_arch();
 267     char *cmdline;
 268     int ret;
 269
 270     /* Check architecture */
 271     if (strcmp(arch, "i386") && strcmp(arch, "x86_64")) {
 272         g_test_message("Skipping test for non-x86\n");
 273         return 0;
 274     }
 275
 276     /* Run the tests */
 277     g_test_init(&argc, &argv, NULL);
 278
 279     cmdline = g_strdup_printf("-device ipmi-bmc-sim,id=bmc0"
 280                               " -device isa-ipmi-kcs,bmc=bmc0");
 281     qtest_start(cmdline);
 282     g_free(cmdline);
 283     qtest_irq_intercept_in(global_qtest, "ioapic");
 284     qtest_add_func("/ipmi/local/kcs_base", test_kcs_base);
 285     qtest_add_func("/ipmi/local/kcs_abort", test_kcs_abort);
 286     qtest_add_func("/ipmi/local/kcs_enable_irq", test_enable_irq);
 287     qtest_add_func("/ipmi/local/kcs_base_irq", test_kcs_base);
 288     qtest_add_func("/ipmi/local/kcs_abort_irq", test_kcs_abort);
 289     ret = g_test_run();
 290     qtest_quit(global_qtest);
 291
 292     return ret;
 293 }