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 } 288