tests/qtest/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 #include "libqtest-single.h"
  28
  29 #define IPMI_IRQ        5
  30
  31 #define IPMI_KCS_BASE   0xca2
  32
  33 #define IPMI_KCS_STATUS_ABORT           0x60
  34 #define IPMI_KCS_CMD_WRITE_START        0x61
  35 #define IPMI_KCS_CMD_WRITE_END          0x62
  36 #define IPMI_KCS_CMD_READ               0x68
  37
  38 #define IPMI_KCS_ABORTED_BY_CMD         0x01
  39
  40 #define IPMI_KCS_CMDREG_GET_STATE() ((kcs_get_cmdreg() >> 6) & 3)
  41 #define IPMI_KCS_STATE_IDLE     0
  42 #define IPMI_KCS_STATE_READ     1
  43 #define IPMI_KCS_STATE_WRITE    2
  44 #define IPMI_KCS_STATE_ERROR    3
  45 #define IPMI_KCS_CMDREG_GET_CD()    ((kcs_get_cmdreg() >> 3) & 1)
  46 #define IPMI_KCS_CMDREG_GET_ATN()   ((kcs_get_cmdreg() >> 2) & 1)
  47 #define IPMI_KCS_CMDREG_GET_IBF()   ((kcs_get_cmdreg() >> 1) & 1)
  48 #define IPMI_KCS_CMDREG_GET_OBF()   ((kcs_get_cmdreg() >> 0) & 1)
  49
  50 static int kcs_ints_enabled;
  51
  52 static uint8_t kcs_get_cmdreg(void)
  53 {
  54     return inb(IPMI_KCS_BASE + 1);
  55 }
  56
  57 static void kcs_write_cmdreg(uint8_t val)
  58 {
  59     outb(IPMI_KCS_BASE + 1, val);
  60 }
  61
  62 static uint8_t kcs_get_datareg(void)
  63 {
  64     return inb(IPMI_KCS_BASE);
  65 }
  66
  67 static void kcs_write_datareg(uint8_t val)
  68 {
  69     outb(IPMI_KCS_BASE, val);
  70 }
  71
  72 static void kcs_wait_ibf(void)
  73 {
  74     unsigned int count = 1000;
  75     while (IPMI_KCS_CMDREG_GET_IBF() != 0) {
  76         --count;
  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         --count;
  86         g_assert(count != 0);
  87     }
  88 }
  89
  90 static void kcs_clear_obf(void)
  91 {
  92     if (kcs_ints_enabled) {
  93         g_assert(get_irq(IPMI_IRQ));
  94     } else {
  95         g_assert(!get_irq(IPMI_IRQ));
  96     }
  97     g_assert(IPMI_KCS_CMDREG_GET_OBF() == 1);
  98     kcs_get_datareg();
  99     g_assert(IPMI_KCS_CMDREG_GET_OBF() == 0);
 100     g_assert(!get_irq(IPMI_IRQ));
 101 }
 102
 103 static void kcs_check_state(uint8_t state)
 104 {
 105     g_assert(IPMI_KCS_CMDREG_GET_STATE() == state);
 106 }
 107
 108 static void kcs_cmd(uint8_t *cmd, unsigned int cmd_len,
 109                     uint8_t *rsp, unsigned int *rsp_len)
 110 {
 111     unsigned int i, j = 0;
 112
 113     /* Should be idle */
 114     g_assert(kcs_get_cmdreg() == 0);
 115
 116     kcs_write_cmdreg(IPMI_KCS_CMD_WRITE_START);
 117     kcs_wait_ibf();
 118     kcs_check_state(IPMI_KCS_STATE_WRITE);
 119     kcs_clear_obf();
 120     for (i = 0; i < cmd_len; i++) {
 121         kcs_write_datareg(cmd[i]);
 122         kcs_wait_ibf();
 123         kcs_check_state(IPMI_KCS_STATE_WRITE);
 124         kcs_clear_obf();
 125     }
 126     kcs_write_cmdreg(IPMI_KCS_CMD_WRITE_END);
 127     kcs_wait_ibf();
 128     kcs_check_state(IPMI_KCS_STATE_WRITE);
 129     kcs_clear_obf();
 130     kcs_write_datareg(0);
 131  next_read_byte:
 132     kcs_wait_ibf();
 133     switch (IPMI_KCS_CMDREG_GET_STATE()) {
 134     case IPMI_KCS_STATE_READ:
 135         kcs_wait_obf();
 136         g_assert(j < *rsp_len);
 137         rsp[j++] = kcs_get_datareg();
 138         kcs_write_datareg(IPMI_KCS_CMD_READ);
 139         goto next_read_byte;
 140         break;
 141
 142     case IPMI_KCS_STATE_IDLE:
 143         kcs_wait_obf();
 144         kcs_get_datareg();
 145         break;
 146
 147     default:
 148         g_assert(0);
 149     }
 150     *rsp_len = j;
 151 }
 152
 153 static void kcs_abort(uint8_t *cmd, unsigned int cmd_len,
 154                       uint8_t *rsp, unsigned int *rsp_len)
 155 {
 156     unsigned int i, j = 0;
 157     unsigned int retries = 4;
 158
 159     /* Should be idle */
 160     g_assert(kcs_get_cmdreg() == 0);
 161
 162     kcs_write_cmdreg(IPMI_KCS_CMD_WRITE_START);
 163     kcs_wait_ibf();
 164     kcs_check_state(IPMI_KCS_STATE_WRITE);
 165     kcs_clear_obf();
 166     for (i = 0; i < cmd_len; i++) {
 167         kcs_write_datareg(cmd[i]);
 168         kcs_wait_ibf();
 169         kcs_check_state(IPMI_KCS_STATE_WRITE);
 170         kcs_clear_obf();
 171     }
 172     kcs_write_cmdreg(IPMI_KCS_CMD_WRITE_END);
 173     kcs_wait_ibf();
 174     kcs_check_state(IPMI_KCS_STATE_WRITE);
 175     kcs_clear_obf();
 176     kcs_write_datareg(0);
 177     kcs_wait_ibf();
 178     switch (IPMI_KCS_CMDREG_GET_STATE()) {
 179     case IPMI_KCS_STATE_READ:
 180         kcs_wait_obf();
 181         g_assert(j < *rsp_len);
 182         rsp[j++] = kcs_get_datareg();
 183         kcs_write_datareg(IPMI_KCS_CMD_READ);
 184         break;
 185
 186     default:
 187         g_assert(0);
 188     }
 189
 190     /* Start the abort here */
 191  retry_abort:
 192     g_assert(retries > 0);
 193
 194     kcs_wait_ibf();
 195     kcs_write_cmdreg(IPMI_KCS_STATUS_ABORT);
 196     kcs_wait_ibf();
 197     kcs_clear_obf();
 198     kcs_write_datareg(0);
 199     kcs_wait_ibf();
 200     if (IPMI_KCS_CMDREG_GET_STATE() != IPMI_KCS_STATE_READ) {
 201         retries--;
 202         goto retry_abort;
 203     }
 204     kcs_wait_obf();
 205     rsp[0] = kcs_get_datareg();
 206     kcs_write_datareg(IPMI_KCS_CMD_READ);
 207     kcs_wait_ibf();
 208     if (IPMI_KCS_CMDREG_GET_STATE() != IPMI_KCS_STATE_IDLE) {
 209         retries--;
 210         goto retry_abort;
 211     }
 212     kcs_wait_obf();
 213     kcs_clear_obf();
 214
 215     *rsp_len = j;
 216 }
 217
 218
 219 static uint8_t get_dev_id_cmd[] = { 0x18, 0x01 };
 220 static uint8_t get_dev_id_rsp[] = { 0x1c, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
 221                                     0x02, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00 };
 222
 223 /*
 224  * Send a get_device_id to do a basic test.
 225  */
 226 static void test_kcs_base(void)
 227 {
 228     uint8_t rsp[20];
 229     unsigned int rsplen = sizeof(rsp);
 230
 231     kcs_cmd(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen);
 232     g_assert(rsplen == sizeof(get_dev_id_rsp));
 233     g_assert(memcmp(get_dev_id_rsp, rsp, rsplen) == 0);
 234 }
 235
 236 /*
 237  * Abort a kcs operation while reading
 238  */
 239 static void test_kcs_abort(void)
 240 {
 241     uint8_t rsp[20];
 242     unsigned int rsplen = sizeof(rsp);
 243
 244     kcs_abort(get_dev_id_cmd, sizeof(get_dev_id_cmd), rsp, &rsplen);
 245     g_assert(rsp[0] == IPMI_KCS_ABORTED_BY_CMD);
 246 }
 247
 248 static uint8_t set_bmc_globals_cmd[] = { 0x18, 0x2e, 0x0f };
 249 static uint8_t set_bmc_globals_rsp[] = { 0x1c, 0x2e, 0x00 };
 250
 251 /*
 252  * Enable interrupts
 253  */
 254 static void test_enable_irq(void)
 255 {
 256     uint8_t rsp[20];
 257     unsigned int rsplen = sizeof(rsp);
 258
 259     kcs_cmd(set_bmc_globals_cmd, sizeof(set_bmc_globals_cmd), rsp, &rsplen);
 260     g_assert(rsplen == sizeof(set_bmc_globals_rsp));
 261     g_assert(memcmp(set_bmc_globals_rsp, rsp, rsplen) == 0);
 262     kcs_ints_enabled = 1;
 263 }
 264
 265 int main(int argc, char **argv)
 266 {
 267     char *cmdline;
 268     int ret;
 269
 270     /* Run the tests */
 271     g_test_init(&argc, &argv, NULL);
 272
 273     cmdline = g_strdup_printf("-device ipmi-bmc-sim,id=bmc0"
 274                               " -device isa-ipmi-kcs,bmc=bmc0");
 275     qtest_start(cmdline);
 276     g_free(cmdline);
 277     qtest_irq_intercept_in(global_qtest, "ioapic");
 278     qtest_add_func("/ipmi/local/kcs_base", test_kcs_base);
 279     qtest_add_func("/ipmi/local/kcs_abort", test_kcs_abort);
 280     qtest_add_func("/ipmi/local/kcs_enable_irq", test_enable_irq);
 281     qtest_add_func("/ipmi/local/kcs_base_irq", test_kcs_base);
 282     qtest_add_func("/ipmi/local/kcs_abort_irq", test_kcs_abort);
 283     ret = g_test_run();
 284     qtest_quit(global_qtest);
 285
 286     return ret;
 287 }