LXR qemu/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
  50static int kcs_ints_enabled;
  51
  52static uint8_t kcs_get_cmdreg(void)
  53{
  54    return inb(IPMI_KCS_BASE + 1);
  55}
  56
  57static void kcs_write_cmdreg(uint8_t val)
  58{
  59    outb(IPMI_KCS_BASE + 1, val);
  60}
  61
  62static uint8_t kcs_get_datareg(void)
  63{
  64    return inb(IPMI_KCS_BASE);
  65}
  66
  67static void kcs_write_datareg(uint8_t val)
  68{
  69    outb(IPMI_KCS_BASE, val);
  70}
  71
  72static 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
  81static 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
  90static 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
 103static void kcs_check_state(uint8_t state)
 104{
 105    g_assert(IPMI_KCS_CMDREG_GET_STATE() == state);
 106}
 107
 108static 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
 153static 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
 219static uint8_t get_dev_id_cmd[] = { 0x18, 0x01 };
 220static 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 */
 226static 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 */
 239static 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
 248static uint8_t set_bmc_globals_cmd[] = { 0x18, 0x2e, 0x0f };
 249static uint8_t set_bmc_globals_rsp[] = { 0x1c, 0x2e, 0x00 };
 250
 251/*
 252 * Enable interrupts
 253 */
 254static 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
 265int 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}
 288