Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 1 | /* |
| 2 | * QEMU IPMI KCS emulation |
| 3 | * |
| 4 | * Copyright (c) 2015,2017 Corey Minyard, MontaVista Software, LLC |
| 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 | #include "qemu/osdep.h" |
| 25 | #include "migration/vmstate.h" |
| 26 | #include "qemu/log.h" |
| 27 | #include "qapi/error.h" |
| 28 | #include "hw/ipmi/ipmi_kcs.h" |
| 29 | |
| 30 | #define IPMI_KCS_OBF_BIT 0 |
| 31 | #define IPMI_KCS_IBF_BIT 1 |
| 32 | #define IPMI_KCS_SMS_ATN_BIT 2 |
| 33 | #define IPMI_KCS_CD_BIT 3 |
| 34 | |
| 35 | #define IPMI_KCS_OBF_MASK (1 << IPMI_KCS_OBF_BIT) |
| 36 | #define IPMI_KCS_GET_OBF(d) (((d) >> IPMI_KCS_OBF_BIT) & 0x1) |
| 37 | #define IPMI_KCS_SET_OBF(d, v) (d) = (((d) & ~IPMI_KCS_OBF_MASK) | \ |
| 38 | (((v) & 1) << IPMI_KCS_OBF_BIT)) |
| 39 | #define IPMI_KCS_IBF_MASK (1 << IPMI_KCS_IBF_BIT) |
| 40 | #define IPMI_KCS_GET_IBF(d) (((d) >> IPMI_KCS_IBF_BIT) & 0x1) |
| 41 | #define IPMI_KCS_SET_IBF(d, v) (d) = (((d) & ~IPMI_KCS_IBF_MASK) | \ |
| 42 | (((v) & 1) << IPMI_KCS_IBF_BIT)) |
| 43 | #define IPMI_KCS_SMS_ATN_MASK (1 << IPMI_KCS_SMS_ATN_BIT) |
| 44 | #define IPMI_KCS_GET_SMS_ATN(d) (((d) >> IPMI_KCS_SMS_ATN_BIT) & 0x1) |
| 45 | #define IPMI_KCS_SET_SMS_ATN(d, v) (d) = (((d) & ~IPMI_KCS_SMS_ATN_MASK) | \ |
| 46 | (((v) & 1) << IPMI_KCS_SMS_ATN_BIT)) |
| 47 | #define IPMI_KCS_CD_MASK (1 << IPMI_KCS_CD_BIT) |
| 48 | #define IPMI_KCS_GET_CD(d) (((d) >> IPMI_KCS_CD_BIT) & 0x1) |
| 49 | #define IPMI_KCS_SET_CD(d, v) (d) = (((d) & ~IPMI_KCS_CD_MASK) | \ |
| 50 | (((v) & 1) << IPMI_KCS_CD_BIT)) |
| 51 | |
| 52 | #define IPMI_KCS_IDLE_STATE 0 |
| 53 | #define IPMI_KCS_READ_STATE 1 |
| 54 | #define IPMI_KCS_WRITE_STATE 2 |
| 55 | #define IPMI_KCS_ERROR_STATE 3 |
| 56 | |
| 57 | #define IPMI_KCS_GET_STATE(d) (((d) >> 6) & 0x3) |
| 58 | #define IPMI_KCS_SET_STATE(d, v) ((d) = ((d) & ~0xc0) | (((v) & 0x3) << 6)) |
| 59 | |
| 60 | #define IPMI_KCS_ABORT_STATUS_CMD 0x60 |
| 61 | #define IPMI_KCS_WRITE_START_CMD 0x61 |
| 62 | #define IPMI_KCS_WRITE_END_CMD 0x62 |
| 63 | #define IPMI_KCS_READ_CMD 0x68 |
| 64 | |
| 65 | #define IPMI_KCS_STATUS_NO_ERR 0x00 |
| 66 | #define IPMI_KCS_STATUS_ABORTED_ERR 0x01 |
| 67 | #define IPMI_KCS_STATUS_BAD_CC_ERR 0x02 |
| 68 | #define IPMI_KCS_STATUS_LENGTH_ERR 0x06 |
| 69 | |
| 70 | static void ipmi_kcs_raise_irq(IPMIKCS *ik) |
| 71 | { |
| 72 | if (ik->use_irq && ik->irqs_enabled && ik->raise_irq) { |
| 73 | ik->raise_irq(ik); |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | static void ipmi_kcs_lower_irq(IPMIKCS *ik) |
| 78 | { |
| 79 | if (ik->lower_irq) { |
| 80 | ik->lower_irq(ik); |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | #define SET_OBF() \ |
| 85 | do { \ |
| 86 | IPMI_KCS_SET_OBF(ik->status_reg, 1); \ |
| 87 | if (!ik->obf_irq_set) { \ |
| 88 | ik->obf_irq_set = 1; \ |
| 89 | if (!ik->atn_irq_set) { \ |
| 90 | ipmi_kcs_raise_irq(ik); \ |
| 91 | } \ |
| 92 | } \ |
| 93 | } while (0) |
| 94 | |
| 95 | static void ipmi_kcs_signal(IPMIKCS *ik, IPMIInterface *ii) |
| 96 | { |
| 97 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); |
| 98 | |
| 99 | ik->do_wake = 1; |
| 100 | while (ik->do_wake) { |
| 101 | ik->do_wake = 0; |
| 102 | iic->handle_if_event(ii); |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | static void ipmi_kcs_handle_event(IPMIInterface *ii) |
| 107 | { |
| 108 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); |
| 109 | IPMIKCS *ik = iic->get_backend_data(ii); |
| 110 | |
| 111 | if (ik->cmd_reg == IPMI_KCS_ABORT_STATUS_CMD) { |
| 112 | if (IPMI_KCS_GET_STATE(ik->status_reg) != IPMI_KCS_ERROR_STATE) { |
| 113 | ik->waiting_rsp++; /* Invalidate the message */ |
| 114 | ik->outmsg[0] = IPMI_KCS_STATUS_ABORTED_ERR; |
| 115 | ik->outlen = 1; |
| 116 | ik->outpos = 0; |
| 117 | IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_ERROR_STATE); |
| 118 | SET_OBF(); |
| 119 | } |
| 120 | goto out; |
| 121 | } |
| 122 | |
| 123 | switch (IPMI_KCS_GET_STATE(ik->status_reg)) { |
| 124 | case IPMI_KCS_IDLE_STATE: |
| 125 | if (ik->cmd_reg == IPMI_KCS_WRITE_START_CMD) { |
| 126 | IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_WRITE_STATE); |
| 127 | ik->cmd_reg = -1; |
| 128 | ik->write_end = 0; |
| 129 | ik->inlen = 0; |
| 130 | SET_OBF(); |
| 131 | } |
| 132 | break; |
| 133 | |
| 134 | case IPMI_KCS_READ_STATE: |
| 135 | handle_read: |
| 136 | if (ik->outpos >= ik->outlen) { |
| 137 | IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_IDLE_STATE); |
| 138 | SET_OBF(); |
| 139 | } else if (ik->data_in_reg == IPMI_KCS_READ_CMD) { |
| 140 | ik->data_out_reg = ik->outmsg[ik->outpos]; |
| 141 | ik->outpos++; |
| 142 | SET_OBF(); |
| 143 | } else { |
| 144 | ik->outmsg[0] = IPMI_KCS_STATUS_BAD_CC_ERR; |
| 145 | ik->outlen = 1; |
| 146 | ik->outpos = 0; |
| 147 | IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_ERROR_STATE); |
| 148 | SET_OBF(); |
| 149 | goto out; |
| 150 | } |
| 151 | break; |
| 152 | |
| 153 | case IPMI_KCS_WRITE_STATE: |
| 154 | if (ik->data_in_reg != -1) { |
| 155 | /* |
| 156 | * Don't worry about input overrun here, that will be |
| 157 | * handled in the BMC. |
| 158 | */ |
| 159 | if (ik->inlen < sizeof(ik->inmsg)) { |
| 160 | ik->inmsg[ik->inlen] = ik->data_in_reg; |
| 161 | } |
| 162 | ik->inlen++; |
| 163 | } |
| 164 | if (ik->write_end) { |
| 165 | IPMIBmcClass *bk = IPMI_BMC_GET_CLASS(ik->bmc); |
| 166 | ik->outlen = 0; |
| 167 | ik->write_end = 0; |
| 168 | ik->outpos = 0; |
| 169 | bk->handle_command(ik->bmc, ik->inmsg, ik->inlen, sizeof(ik->inmsg), |
| 170 | ik->waiting_rsp); |
| 171 | goto out_noibf; |
| 172 | } else if (ik->cmd_reg == IPMI_KCS_WRITE_END_CMD) { |
| 173 | ik->cmd_reg = -1; |
| 174 | ik->write_end = 1; |
| 175 | } |
| 176 | SET_OBF(); |
| 177 | break; |
| 178 | |
| 179 | case IPMI_KCS_ERROR_STATE: |
| 180 | if (ik->data_in_reg != -1) { |
| 181 | IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_READ_STATE); |
| 182 | ik->data_in_reg = IPMI_KCS_READ_CMD; |
| 183 | goto handle_read; |
| 184 | } |
| 185 | break; |
| 186 | } |
| 187 | |
| 188 | if (ik->cmd_reg != -1) { |
| 189 | /* Got an invalid command */ |
| 190 | ik->outmsg[0] = IPMI_KCS_STATUS_BAD_CC_ERR; |
| 191 | ik->outlen = 1; |
| 192 | ik->outpos = 0; |
| 193 | IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_ERROR_STATE); |
| 194 | } |
| 195 | |
| 196 | out: |
| 197 | ik->cmd_reg = -1; |
| 198 | ik->data_in_reg = -1; |
| 199 | IPMI_KCS_SET_IBF(ik->status_reg, 0); |
| 200 | out_noibf: |
| 201 | return; |
| 202 | } |
| 203 | |
| 204 | static void ipmi_kcs_handle_rsp(IPMIInterface *ii, uint8_t msg_id, |
| 205 | unsigned char *rsp, unsigned int rsp_len) |
| 206 | { |
| 207 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); |
| 208 | IPMIKCS *ik = iic->get_backend_data(ii); |
| 209 | |
| 210 | if (ik->waiting_rsp == msg_id) { |
| 211 | ik->waiting_rsp++; |
| 212 | if (rsp_len > sizeof(ik->outmsg)) { |
| 213 | ik->outmsg[0] = rsp[0]; |
| 214 | ik->outmsg[1] = rsp[1]; |
| 215 | ik->outmsg[2] = IPMI_CC_CANNOT_RETURN_REQ_NUM_BYTES; |
| 216 | ik->outlen = 3; |
| 217 | } else { |
| 218 | memcpy(ik->outmsg, rsp, rsp_len); |
| 219 | ik->outlen = rsp_len; |
| 220 | } |
| 221 | IPMI_KCS_SET_STATE(ik->status_reg, IPMI_KCS_READ_STATE); |
| 222 | ik->data_in_reg = IPMI_KCS_READ_CMD; |
| 223 | ipmi_kcs_signal(ik, ii); |
| 224 | } |
| 225 | } |
| 226 | |
| 227 | |
| 228 | static uint64_t ipmi_kcs_ioport_read(void *opaque, hwaddr addr, unsigned size) |
| 229 | { |
| 230 | IPMIInterface *ii = opaque; |
| 231 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); |
| 232 | IPMIKCS *ik = iic->get_backend_data(ii); |
| 233 | uint32_t ret; |
| 234 | |
Corey Minyard | 79d29a9 | 2017-12-06 13:18:07 -0600 | [diff] [blame] | 235 | switch (addr & ik->size_mask) { |
Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 236 | case 0: |
| 237 | ret = ik->data_out_reg; |
| 238 | IPMI_KCS_SET_OBF(ik->status_reg, 0); |
| 239 | if (ik->obf_irq_set) { |
| 240 | ik->obf_irq_set = 0; |
| 241 | if (!ik->atn_irq_set) { |
| 242 | ipmi_kcs_lower_irq(ik); |
| 243 | } |
| 244 | } |
| 245 | break; |
Corey Minyard | 79d29a9 | 2017-12-06 13:18:07 -0600 | [diff] [blame] | 246 | |
Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 247 | case 1: |
| 248 | ret = ik->status_reg; |
| 249 | if (ik->atn_irq_set) { |
| 250 | ik->atn_irq_set = 0; |
| 251 | if (!ik->obf_irq_set) { |
| 252 | ipmi_kcs_lower_irq(ik); |
| 253 | } |
| 254 | } |
| 255 | break; |
Corey Minyard | 79d29a9 | 2017-12-06 13:18:07 -0600 | [diff] [blame] | 256 | |
| 257 | default: |
| 258 | ret = 0xff; |
Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 259 | } |
| 260 | return ret; |
| 261 | } |
| 262 | |
| 263 | static void ipmi_kcs_ioport_write(void *opaque, hwaddr addr, uint64_t val, |
| 264 | unsigned size) |
| 265 | { |
| 266 | IPMIInterface *ii = opaque; |
| 267 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); |
| 268 | IPMIKCS *ik = iic->get_backend_data(ii); |
| 269 | |
| 270 | if (IPMI_KCS_GET_IBF(ik->status_reg)) { |
| 271 | return; |
| 272 | } |
| 273 | |
Corey Minyard | 79d29a9 | 2017-12-06 13:18:07 -0600 | [diff] [blame] | 274 | switch (addr & ik->size_mask) { |
Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 275 | case 0: |
| 276 | ik->data_in_reg = val; |
| 277 | break; |
| 278 | |
| 279 | case 1: |
| 280 | ik->cmd_reg = val; |
| 281 | break; |
Corey Minyard | 79d29a9 | 2017-12-06 13:18:07 -0600 | [diff] [blame] | 282 | |
| 283 | default: |
| 284 | /* Ignore. */ |
| 285 | break; |
Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 286 | } |
| 287 | IPMI_KCS_SET_IBF(ik->status_reg, 1); |
| 288 | ipmi_kcs_signal(ik, ii); |
| 289 | } |
| 290 | |
| 291 | const MemoryRegionOps ipmi_kcs_io_ops = { |
| 292 | .read = ipmi_kcs_ioport_read, |
| 293 | .write = ipmi_kcs_ioport_write, |
| 294 | .impl = { |
| 295 | .min_access_size = 1, |
| 296 | .max_access_size = 1, |
| 297 | }, |
| 298 | .endianness = DEVICE_LITTLE_ENDIAN, |
| 299 | }; |
| 300 | |
| 301 | static void ipmi_kcs_set_atn(IPMIInterface *ii, int val, int irq) |
| 302 | { |
| 303 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); |
| 304 | IPMIKCS *ik = iic->get_backend_data(ii); |
| 305 | |
| 306 | IPMI_KCS_SET_SMS_ATN(ik->status_reg, val); |
| 307 | if (val) { |
| 308 | if (irq && !ik->atn_irq_set) { |
| 309 | ik->atn_irq_set = 1; |
| 310 | if (!ik->obf_irq_set) { |
| 311 | ipmi_kcs_raise_irq(ik); |
| 312 | } |
| 313 | } |
| 314 | } else { |
| 315 | if (ik->atn_irq_set) { |
| 316 | ik->atn_irq_set = 0; |
| 317 | if (!ik->obf_irq_set) { |
| 318 | ipmi_kcs_lower_irq(ik); |
| 319 | } |
| 320 | } |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | static void ipmi_kcs_set_irq_enable(IPMIInterface *ii, int val) |
| 325 | { |
| 326 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); |
| 327 | IPMIKCS *ik = iic->get_backend_data(ii); |
| 328 | |
| 329 | ik->irqs_enabled = val; |
| 330 | } |
| 331 | |
Corey Minyard | 79d29a9 | 2017-12-06 13:18:07 -0600 | [diff] [blame] | 332 | /* min_size must be a power of 2. */ |
| 333 | static void ipmi_kcs_init(IPMIInterface *ii, unsigned int min_size, |
| 334 | Error **errp) |
Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 335 | { |
| 336 | IPMIInterfaceClass *iic = IPMI_INTERFACE_GET_CLASS(ii); |
| 337 | IPMIKCS *ik = iic->get_backend_data(ii); |
| 338 | |
Corey Minyard | 79d29a9 | 2017-12-06 13:18:07 -0600 | [diff] [blame] | 339 | if (min_size == 0) { |
| 340 | min_size = 2; |
| 341 | } |
| 342 | ik->size_mask = min_size - 1; |
Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 343 | ik->io_length = 2; |
Corey Minyard | 79d29a9 | 2017-12-06 13:18:07 -0600 | [diff] [blame] | 344 | memory_region_init_io(&ik->io, NULL, &ipmi_kcs_io_ops, ii, "ipmi-kcs", |
| 345 | min_size); |
Corey Minyard | 0f310cd | 2017-12-06 07:34:24 -0600 | [diff] [blame] | 346 | } |
| 347 | |
| 348 | int ipmi_kcs_vmstate_post_load(void *opaque, int version) |
| 349 | { |
| 350 | IPMIKCS *ik = opaque; |
| 351 | |
| 352 | /* Make sure all the values are sane. */ |
| 353 | if (ik->outpos >= MAX_IPMI_MSG_SIZE || ik->outlen >= MAX_IPMI_MSG_SIZE || |
| 354 | ik->outpos >= ik->outlen) { |
| 355 | qemu_log_mask(LOG_GUEST_ERROR, |
| 356 | "ipmi:kcs: vmstate transfer received bad out values: %d %d\n", |
| 357 | ik->outpos, ik->outlen); |
| 358 | ik->outpos = 0; |
| 359 | ik->outlen = 0; |
| 360 | } |
| 361 | |
| 362 | if (ik->inlen >= MAX_IPMI_MSG_SIZE) { |
| 363 | qemu_log_mask(LOG_GUEST_ERROR, |
| 364 | "ipmi:kcs: vmstate transfer received bad in value: %d\n", |
| 365 | ik->inlen); |
| 366 | ik->inlen = 0; |
| 367 | } |
| 368 | |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | static bool vmstate_kcs_before_version2(void *opaque, int version) |
| 373 | { |
| 374 | return version <= 1; |
| 375 | } |
| 376 | |
| 377 | const VMStateDescription vmstate_IPMIKCS = { |
| 378 | .name = TYPE_IPMI_INTERFACE_PREFIX "kcs", |
| 379 | .version_id = 2, |
| 380 | .minimum_version_id = 1, |
| 381 | .post_load = ipmi_kcs_vmstate_post_load, |
| 382 | .fields = (VMStateField[]) { |
| 383 | VMSTATE_BOOL(obf_irq_set, IPMIKCS), |
| 384 | VMSTATE_BOOL(atn_irq_set, IPMIKCS), |
| 385 | VMSTATE_UNUSED_TEST(vmstate_kcs_before_version2, 1), /* Was use_irq */ |
| 386 | VMSTATE_BOOL(irqs_enabled, IPMIKCS), |
| 387 | VMSTATE_UINT32(outpos, IPMIKCS), |
| 388 | VMSTATE_UINT32_V(outlen, IPMIKCS, 2), |
| 389 | VMSTATE_UINT8_ARRAY(outmsg, IPMIKCS, MAX_IPMI_MSG_SIZE), |
| 390 | VMSTATE_UINT32_V(inlen, IPMIKCS, 2), |
| 391 | VMSTATE_UINT8_ARRAY(inmsg, IPMIKCS, MAX_IPMI_MSG_SIZE), |
| 392 | VMSTATE_BOOL(write_end, IPMIKCS), |
| 393 | VMSTATE_UINT8(status_reg, IPMIKCS), |
| 394 | VMSTATE_UINT8(data_out_reg, IPMIKCS), |
| 395 | VMSTATE_INT16(data_in_reg, IPMIKCS), |
| 396 | VMSTATE_INT16(cmd_reg, IPMIKCS), |
| 397 | VMSTATE_UINT8(waiting_rsp, IPMIKCS), |
| 398 | VMSTATE_END_OF_LIST() |
| 399 | } |
| 400 | }; |
| 401 | |
| 402 | void ipmi_kcs_get_fwinfo(IPMIKCS *ik, IPMIFwInfo *info) |
| 403 | { |
| 404 | info->interface_name = "kcs"; |
| 405 | info->interface_type = IPMI_SMBIOS_KCS; |
| 406 | info->ipmi_spec_major_revision = 2; |
| 407 | info->ipmi_spec_minor_revision = 0; |
| 408 | info->base_address = ik->io_base; |
| 409 | info->i2c_slave_address = ik->bmc->slave_addr; |
| 410 | info->register_length = ik->io_length; |
| 411 | info->register_spacing = 1; |
| 412 | info->memspace = IPMI_MEMSPACE_IO; |
| 413 | info->irq_type = IPMI_LEVEL_IRQ; |
| 414 | } |
| 415 | |
| 416 | void ipmi_kcs_class_init(IPMIInterfaceClass *iic) |
| 417 | { |
| 418 | iic->init = ipmi_kcs_init; |
| 419 | iic->set_atn = ipmi_kcs_set_atn; |
| 420 | iic->handle_rsp = ipmi_kcs_handle_rsp; |
| 421 | iic->handle_if_event = ipmi_kcs_handle_event; |
| 422 | iic->set_irq_enable = ipmi_kcs_set_irq_enable; |
| 423 | } |