Shad Ansari | 2f7f9be | 2017-06-07 13:34:53 -0700 | [diff] [blame] | 1 | /* |
| 2 | <:copyright-BRCM:2016:DUAL/GPL:standard |
| 3 | |
| 4 | Broadcom Proprietary and Confidential.(c) 2016 Broadcom |
| 5 | All Rights Reserved |
| 6 | |
| 7 | Unless you and Broadcom execute a separate written software license |
| 8 | agreement governing use of this software, this software is licensed |
| 9 | to you under the terms of the GNU General Public License version 2 |
| 10 | (the "GPL"), available at http://www.broadcom.com/licenses/GPLv2.php, |
| 11 | with the following added to such license: |
| 12 | |
| 13 | As a special exception, the copyright holders of this software give |
| 14 | you permission to link this software with independent modules, and |
| 15 | to copy and distribute the resulting executable under terms of your |
| 16 | choice, provided that you also meet, for each linked independent |
| 17 | module, the terms and conditions of the license of that module. |
| 18 | An independent module is a module which is not derived from this |
| 19 | software. The special exception does not apply to any modifications |
| 20 | of the software. |
| 21 | |
| 22 | Not withstanding the above, under no circumstances may you combine |
| 23 | this software in any way with any other Broadcom software provided |
| 24 | under a license other than the GPL, without Broadcom's express prior |
| 25 | written consent. |
| 26 | |
| 27 | :> |
| 28 | */ |
| 29 | |
| 30 | /* |
| 31 | * bcmtr_mux.c |
| 32 | * |
| 33 | * Transport Multiplexer |
| 34 | * - PCIe/in-band channel multiplexer |
| 35 | * - locally/remotely - terminated message multiplexer |
| 36 | * - autonomous messages de-multiplexer |
| 37 | */ |
| 38 | #include <bcmos_system.h> |
| 39 | #include <bcmolt_msg.h> |
| 40 | #include <bcmolt_buf.h> |
| 41 | #include <bcmolt_msg_pack.h> |
| 42 | #include <bcmtr_header.h> |
| 43 | #include <bcmolt_tr_mux.h> |
| 44 | #ifdef IN_BAND |
| 45 | #include <bcmtr_inband.h> |
| 46 | #else |
| 47 | #include <bcmtr_pcie.h> |
| 48 | #include <bcmolt_llpcie.h> |
| 49 | #include <bcmolt_fld.h> |
| 50 | #include <bcm_fld_common.h> |
| 51 | #include <bcmtr_pcie_sw_queue.h> |
| 52 | #endif |
| 53 | #include <bcmolt_api.h> |
| 54 | #include <bcmolt_model_types.h> |
| 55 | #include <bcmolt_model_ids.h> |
| 56 | |
| 57 | #define BCMTRMUX_MAX_TX_DELAY 500 /* max transmit delay (us) */ |
| 58 | #define BCMTRMUX_MAX_RX_DELAY 5000 /* max receive delay (us) */ |
| 59 | |
| 60 | #ifdef __KERNEL__ |
| 61 | #define BCMTRMUX_LOG printk |
| 62 | #else |
| 63 | #define BCMTRMUX_LOG BCMOS_TRACE_INFO |
| 64 | #endif |
| 65 | |
| 66 | /* Channel registration info */ |
| 67 | typedef struct |
| 68 | { |
| 69 | f_bcmtr_rx_handler rx; |
| 70 | void *data; |
| 71 | } bcmtrmux_rx_info; |
| 72 | |
| 73 | typedef struct |
| 74 | { |
| 75 | f_bcmtr_local_rx_handler rx; |
| 76 | void *data; |
| 77 | } bcmtrmux_local_rx_info; |
| 78 | |
| 79 | /* Registration arrays */ |
| 80 | static bcmtrmux_rx_info bcmtrmux_rx_info_array[BCMTR_MAX_OLTS][BCMTRMUX_MAX_CHANNELS]; |
| 81 | static bcmtrmux_local_rx_info bcmtrmux_local_rx_info_array[BCMTR_MAX_OLTS]; |
| 82 | static bcmtrmux_channel bcmtrmux_auto_channels[BCMTR_MAX_OLTS][BCMTR_MAX_INSTANCES][BCMOLT_OBJ_ID__NUM_OF]; |
| 83 | static bcmtrmux_channel bcmtrmux_proxy_channels[BCMTR_MAX_OLTS][BCMTR_MAX_INSTANCES][BCMOLT_OBJ_ID__NUM_OF]; |
| 84 | static bcmos_bool bcmtr_mux_connected[BCMTR_MAX_OLTS]; |
| 85 | static bcmos_bool bcmtr_mux_terminated[BCMTR_MAX_OLTS]; |
| 86 | static bcmos_bool bcmtrmux_dev_ctrl_intercept[BCMTR_MAX_OLTS][BCMOLT_GROUP_ID__NUM_OF]; |
| 87 | |
| 88 | #ifndef IN_BAND |
| 89 | |
| 90 | /* Number of registered high-priority channels */ |
| 91 | static bcmtrmux_channel num_urgent_channels[BCMTR_MAX_OLTS]; |
| 92 | |
| 93 | /* Receive semaphore */ |
| 94 | static bcmos_sem bcmtrmux_rx_lock[BCMTR_MAX_OLTS]; |
| 95 | |
| 96 | #endif |
| 97 | |
| 98 | /* Statistics */ |
| 99 | static bcmtrmux_stat bcmtrmux_stat_array[BCMTR_MAX_OLTS]; |
| 100 | |
| 101 | /* Receive tasks */ |
| 102 | static bcmos_task bcmtrmux_rx_task[BCMTR_MAX_OLTS]; |
| 103 | |
| 104 | /* Registration protection */ |
| 105 | static bcmos_fastlock bcmtrmux_lock; |
| 106 | |
| 107 | static void bcmtrmux_rx_auto_proxy(bcmolt_devid device, bcmos_buf *buf, bcmtrmux_channel channel, void *data); |
| 108 | static void bcmtrmux_rx_local(bcmolt_devid device, bcmos_buf *buf, bcmtrmux_channel channel, void *data); |
| 109 | |
| 110 | static bcmtrmux_msg_filter_cb_t bcmtrmux_msg_filter_cb; |
| 111 | |
| 112 | /* discard packet for which there is no registration */ |
| 113 | static void bcmtrmux_rx_discard(bcmolt_devid device, bcmos_buf *buf, bcmtrmux_channel channel, void *data) |
| 114 | { |
| 115 | uint32_t *counter = (uint32_t *)data; |
| 116 | ++(*counter); |
| 117 | bcmos_buf_free(buf); |
| 118 | } |
| 119 | |
| 120 | /* discard unpacked message for which there is no registration */ |
| 121 | static void bcmtrmux_local_rx_discard(bcmolt_devid device, bcmolt_msg *msg, void *data) |
| 122 | { |
| 123 | uint32_t *counter = (uint32_t *)data; |
| 124 | ++(*counter); |
| 125 | bcmolt_msg_free(msg); |
| 126 | } |
| 127 | |
| 128 | /* Find free channel. returns channel id >= 0 or BCMTRMUX_MAX_CHANNELS if no free channels */ |
| 129 | static int bcmtrmux_channel_get_free(bcmolt_devid device) |
| 130 | { |
| 131 | int i; |
| 132 | /* Start from BCMTRMUX_CHANNEL_FIRST_FREE. Channel 0 is reserved for indications/proxy , Channel 1 is for Keep Alive*/ |
| 133 | for (i=BCMTRMUX_CHANNEL_FIRST_FREE; i<BCMTRMUX_FIRST_URGENT_CHANNEL; i++) |
| 134 | { |
| 135 | if (bcmtrmux_rx_info_array[device][i].rx == bcmtrmux_rx_discard) |
| 136 | break; |
| 137 | } |
| 138 | return i; |
| 139 | } |
| 140 | |
| 141 | #ifndef IN_BAND |
| 142 | /* PCIe Receive handler */ |
| 143 | static int _bcmtrmux_pcie_rx_handler(long device) |
| 144 | { |
| 145 | bcmos_errno rc; |
| 146 | bcmos_buf *buf; |
| 147 | uint32_t nbuf[BCMTR_PCIE_PRTY__NUM_OF] = {}; |
| 148 | uint8_t ch; |
| 149 | |
| 150 | BUG_ON(device >= BCMTR_MAX_OLTS); |
| 151 | |
| 152 | BCMTRMUX_LOG("rx_task(%ld) - started\n", device); |
| 153 | |
| 154 | /* Enable rx interrupt */ |
| 155 | |
| 156 | while (1) |
| 157 | { |
| 158 | bcmtr_pcie_rxint_enable(device); |
| 159 | bcmos_sem_wait(&bcmtrmux_rx_lock[device], BCMTRMUX_MAX_RX_DELAY); |
| 160 | |
| 161 | if (!bcmtr_mux_connected[device]) |
| 162 | { |
| 163 | break; |
| 164 | } |
| 165 | /* Wait for receive */ |
| 166 | do |
| 167 | { |
| 168 | buf = NULL; |
| 169 | rc = bcmtr_swq_receive(device, BCMTR_PCIE_PRTY_NORMAL, &ch, &buf); |
| 170 | if (rc) |
| 171 | { |
| 172 | /* If DMA is not shared with urgent service, poll RXQ here, |
| 173 | * don't wait for interrupt |
| 174 | */ |
| 175 | if (rc == BCM_ERR_QUEUE_EMPTY && !num_urgent_channels[device]) |
| 176 | { |
| 177 | bcmtr_pcie_rxint_disable(device); |
| 178 | bcmtr_swq_rx_poll(device, nbuf); |
| 179 | bcmtrmux_stat_array[device].rx_poll_normal += nbuf[BCMTR_PCIE_PRTY_NORMAL]; |
| 180 | } |
| 181 | /* Wait for interrupt or semaphore timeout */ |
| 182 | break; |
| 183 | } |
| 184 | bcmtrmux_rx_from_line((bcmolt_devid)device, (bcmtrmux_channel)ch, buf); |
| 185 | } while (bcmtr_mux_connected[device]); |
| 186 | } |
| 187 | BCMTRMUX_LOG("rx_task(%ld) - terminated\n", device); |
| 188 | bcmtr_mux_terminated[device] = BCMOS_TRUE; |
| 189 | |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | static void bcmtrmux_rx_irq(bcmolt_devid device) |
| 194 | { |
| 195 | bcmos_buf *buf; |
| 196 | uint8_t ch; |
| 197 | uint32_t nbuf[BCMTR_PCIE_PRTY__NUM_OF] = {}; |
| 198 | |
| 199 | bcmtr_pcie_rxint_disable(device); |
| 200 | bcmtr_pcie_rxint_clear(device); |
| 201 | bcmtr_swq_rx_poll(device, nbuf); |
| 202 | |
| 203 | /* Got some packets. Deliver high priority from interrupt level */ |
| 204 | if (nbuf[BCMTR_PCIE_PRTY_URGENT]) |
| 205 | { |
| 206 | bcmtrmux_stat_array[device].rx_poll_urgent += nbuf[BCMTR_PCIE_PRTY_URGENT]; |
| 207 | while (bcmtr_swq_receive(device, BCMTR_PCIE_PRTY_URGENT, &ch, &buf) == BCM_ERR_OK) |
| 208 | { |
| 209 | bcmtrmux_rx_from_line(device, ch, buf); |
| 210 | } |
| 211 | } |
| 212 | |
| 213 | /* Check normal priority */ |
| 214 | if (nbuf[BCMTR_PCIE_PRTY_NORMAL]) |
| 215 | { |
| 216 | bcmtrmux_stat_array[device].rx_poll_normal += nbuf[BCMTR_PCIE_PRTY_NORMAL]; |
| 217 | bcmos_sem_post(&bcmtrmux_rx_lock[device]); |
| 218 | } |
| 219 | |
| 220 | /* Enable rx interrupt */ |
| 221 | bcmtr_pcie_rxint_enable(device); |
| 222 | |
| 223 | return; |
| 224 | } |
| 225 | |
| 226 | /* Tx confirmation interrupt handler. |
| 227 | * Used only if there are urgent channels |
| 228 | */ |
| 229 | static void bcmtrmux_tx_irq(bcmolt_devid device) |
| 230 | { |
| 231 | /* Disable and clear transmit completion interrupts */ |
| 232 | bcmtr_pcie_txint_disable(device); |
| 233 | bcmtr_pcie_txint_clear(device); |
| 234 | /* Submit buffers pending in sw queue to the h/w queue */ |
| 235 | bcmtr_swq_tx_submit(device); |
| 236 | /* Re-enable tx completion interrupt */ |
| 237 | bcmtr_pcie_txint_enable(device); |
| 238 | return; |
| 239 | } |
| 240 | |
| 241 | /* Init PCIE transport */ |
| 242 | static bcmos_errno bcmtrmux_pcie_init(bcmolt_devid device, uint32_t txq_size, uint32_t rxq_size) |
| 243 | { |
| 244 | uint32_t pcie_cookie[BCMOS_ROUND_UP(PCIE_OPAQUE_DATA_SIZE, sizeof(uint32_t))/sizeof(uint32_t)]; |
| 245 | bcmtr_pcie_pre_connect_cfg cfg; |
| 246 | bcm_ll_dev_info ll_info; |
| 247 | int niter = 0; |
| 248 | bcmos_errno err; |
| 249 | bcmos_bool status; |
| 250 | |
| 251 | #ifndef SIMULATION_BUILD |
| 252 | err = bcm_ll_pcie_query(device, &ll_info); |
| 253 | if (err) |
| 254 | { |
| 255 | BCMOS_TRACE_RETURN(err, "bcm_ll_pcie_query() failed\n"); |
| 256 | } |
| 257 | #endif |
| 258 | |
| 259 | BCMTRMUX_LOG("Waiting for BCM68620 application\n"); |
| 260 | bcm_fld_set_rings_size(device, txq_size, rxq_size); |
| 261 | status = bcm_fld_test_device_bootrecord_flag(device); |
| 262 | |
| 263 | /* Wait for embedded handshake. BCMTR_PCIE_START_TIMEOUT is in ms */ |
| 264 | for (niter = 0; |
| 265 | niter < BCMTR_PCIE_START_TIMEOUT / 10 && !(status = bcm_fld_test_device_bootrecord_flag(device)); |
| 266 | niter++) |
| 267 | { |
| 268 | bcmos_usleep(10000); |
| 269 | } |
| 270 | if (!status) |
| 271 | { |
| 272 | BCMOS_TRACE_RETURN(BCM_ERR_IO, "BCM68620 application timeout\n"); |
| 273 | } |
| 274 | |
| 275 | err = bcm_fld_get_device_bootrecord(device, pcie_cookie); |
| 276 | if (err != BCM_ERR_OK) |
| 277 | { |
| 278 | BCMOS_TRACE_RETURN(err, "bcm_fld_get_device_bootrecord() failed\n"); |
| 279 | } |
| 280 | |
| 281 | /* set host prm bit - indicate host ready to send/receive DMA */ |
| 282 | bcm_fld_clear_device_bootrecord_flag(device); |
| 283 | |
| 284 | cfg.txq_size = txq_size; /* Transmit queue size */ |
| 285 | cfg.rxq_size = rxq_size; /* Receive queue size */ |
| 286 | cfg.max_mtu = BCMTR_MAX_MTU_SIZE; /* Max MTU size */ |
| 287 | cfg.pcie_reg_base = ll_info.soc_regs_base; |
| 288 | cfg.ddr_win_base = ll_info.soc_ddr_base; |
| 289 | cfg.rx_irq = ll_info.irq; |
| 290 | |
| 291 | err = bcmtr_pcie_pre_connect(device, &cfg, (bcmtr_pcie_opaque_data *)pcie_cookie); |
| 292 | if (err) |
| 293 | { |
| 294 | BCMOS_TRACE_RETURN(err, "bcmtr_pcie_pre_connect() failed\n"); |
| 295 | } |
| 296 | |
| 297 | err = bcmtr_pcie_connect(device,(bcmtr_pcie_opaque_data *)pcie_cookie); |
| 298 | if (err) |
| 299 | { |
| 300 | BCMOS_TRACE_RETURN(err, "bcmtr_pcie_connect() failed\n"); |
| 301 | } |
| 302 | |
| 303 | bcm_fld_set_host_bootrecord_flag(device); |
| 304 | |
| 305 | /* Wait for embedded handshake. BCMTR_PCIE_CONNECT_TIMEOUT is in ms */ |
| 306 | for (niter = 0; |
| 307 | niter < BCMTR_PCIE_CONNECT_TIMEOUT / 10 && (status = bcm_fld_test_host_bootrecord_flag(device)); |
| 308 | niter++) |
| 309 | { |
| 310 | bcmos_usleep(10000); |
| 311 | } |
| 312 | if (status) |
| 313 | { |
| 314 | BCMOS_TRACE_RETURN(BCM_ERR_IO, "BCM68620 connect timeout\n"); |
| 315 | } |
| 316 | |
| 317 | BCMTRMUX_LOG("PCI transport: initialized\n"); |
| 318 | |
| 319 | return BCM_ERR_OK; |
| 320 | } |
| 321 | |
| 322 | #else /* #ifndef IN_BAND */ |
| 323 | |
| 324 | /* IN-BAND receive handler */ |
| 325 | static int _bcmtrmux_ib_rx_handler(long device) |
| 326 | { |
| 327 | bcmos_errno rc; |
| 328 | bcmos_buf *buf; |
| 329 | uint8_t ch; |
| 330 | |
| 331 | BUG_ON(device >= BCMTR_MAX_OLTS); |
| 332 | |
| 333 | BCMTRMUX_LOG("rx_task(%ld) - started\n", device); |
| 334 | |
| 335 | while (bcmtr_mux_connected[device]) |
| 336 | { |
| 337 | /* Wait for receive */ |
| 338 | buf = NULL; |
| 339 | rc = bcmtr_ib_receive(device, &ch, &buf); |
| 340 | if (rc == BCM_ERR_OK) |
| 341 | { |
| 342 | bcmtrmux_rx_from_line((bcmolt_devid)device, (bcmtrmux_channel)ch, buf); |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | BCMTRMUX_LOG("rx_task(%ld) - terminated\n", device); |
| 347 | bcmtr_mux_terminated[device] = BCMOS_TRUE; |
| 348 | |
| 349 | return 0; |
| 350 | } |
| 351 | |
| 352 | static bcmos_errno bcmtrmux_ib_connect(bcmolt_devid device, bcmos_ipv4_address ip_address, uint16_t udp_port) |
| 353 | { |
| 354 | bcmos_errno rc; |
| 355 | |
| 356 | rc = bcmtr_ib_connect((uint8_t)device, ip_address, udp_port); |
| 357 | if (rc) |
| 358 | { |
| 359 | BCMTRMUX_LOG("%s: Failed to connect. Error %d\n", __FUNCTION__, rc); |
| 360 | return rc; |
| 361 | } |
| 362 | return rc; |
| 363 | } |
| 364 | |
| 365 | #endif /* #ifndef IN_BAND */ |
| 366 | |
| 367 | |
| 368 | /** Initialize mux service |
| 369 | * \returns: 0 in case of success or error code < 0 |
| 370 | */ |
| 371 | bcmos_errno bcmtrmux_init(bcmtrmux_msg_filter_cb_t msg_filter_cb) |
| 372 | { |
| 373 | static bcmos_bool initialized = BCMOS_FALSE; |
| 374 | int i, j; |
| 375 | bcmos_errno rc; |
| 376 | |
| 377 | bcmtrmux_msg_filter_cb = msg_filter_cb; |
| 378 | |
| 379 | BCMTRMUX_LOG("Initialising transport MUX subsystem\n"); |
| 380 | if (initialized) |
| 381 | { |
| 382 | return BCM_ERR_ALREADY; |
| 383 | } |
| 384 | |
| 385 | for (i=0; i<BCMTR_MAX_OLTS; i++) |
| 386 | { |
| 387 | for (j=0; j<BCMTRMUX_MAX_CHANNELS; j++) |
| 388 | { |
| 389 | bcmtrmux_rx_info_array[i][j].rx = bcmtrmux_rx_discard; |
| 390 | bcmtrmux_rx_info_array[i][j].data = &bcmtrmux_stat_array[i].rx_disc_remote; |
| 391 | } |
| 392 | bcmtrmux_rx_info_array[i][BCMTRMUX_CHANNEL_AUTO_PROXY].rx = bcmtrmux_rx_auto_proxy; |
| 393 | bcmtrmux_rx_info_array[i][BCMTRMUX_CHANNEL_AUTO_PROXY].data = NULL; |
| 394 | bcmtrmux_rx_info_array[i][BCMTRMUX_CHANNEL_DEV_CONTROL].rx = bcmtrmux_rx_local; |
| 395 | bcmtrmux_rx_info_array[i][BCMTRMUX_CHANNEL_DEV_CONTROL].data = NULL; |
| 396 | for (j=0; j<BCMTR_MAX_INSTANCES; j++) |
| 397 | { |
| 398 | bcmolt_obj_id k; |
| 399 | for (k=0; k<BCMOLT_OBJ_ID__NUM_OF; k++) |
| 400 | { |
| 401 | bcmtrmux_auto_channels[i][j][k] = BCMTRMUX_MAX_CHANNELS; |
| 402 | bcmtrmux_proxy_channels[i][j][k] = BCMTRMUX_MAX_CHANNELS; |
| 403 | } |
| 404 | } |
| 405 | bcmtrmux_local_rx_info_array[i].rx = bcmtrmux_local_rx_discard; |
| 406 | bcmtrmux_local_rx_info_array[i].data = &bcmtrmux_stat_array[i].tx_disc_local; |
| 407 | } |
| 408 | |
| 409 | bcmos_fastlock_init(&bcmtrmux_lock, 0); |
| 410 | |
| 411 | /*Don't initialize at this time for User Space dev ctrl, |
| 412 | don't have enough information*/ |
| 413 | #ifndef IN_BAND |
| 414 | rc = bcmtr_pcie_init(BCMTR_MAX_OLTS); |
| 415 | if (rc) |
| 416 | { |
| 417 | BCMOS_TRACE_RETURN(rc, "bcmtr_pcie_init() failed\n"); |
| 418 | } |
| 419 | |
| 420 | rc = bcmtr_swq_init(); |
| 421 | if (rc) |
| 422 | { |
| 423 | BCMOS_TRACE_RETURN(rc, "bcmtr_swq_init() failed\n"); |
| 424 | } |
| 425 | |
| 426 | /* Register rx callback in PCIe driver */ |
| 427 | bcmtr_pcie_rx_irq_cblk_register(bcmtrmux_rx_irq); |
| 428 | bcmtr_pcie_tx_irq_cblk_register(bcmtrmux_tx_irq); |
| 429 | #else |
| 430 | |
| 431 | rc = bcmtr_ib_init(); |
| 432 | if (rc) |
| 433 | { |
| 434 | BCMOS_TRACE_RETURN(rc, "bcmtr_ib_init() failed\n"); |
| 435 | } |
| 436 | |
| 437 | #endif /* #ifndef IN_BAND */ |
| 438 | |
| 439 | BCMTRMUX_LOG("Transport MUX init done\n"); |
| 440 | |
| 441 | return rc; |
| 442 | } |
| 443 | |
| 444 | /** Notify mux driver that low-level transport connection is ready |
| 445 | * \returns: 0 in case of success or error code < 0 |
| 446 | */ |
| 447 | #ifdef IN_BAND |
| 448 | bcmos_errno bcmtrmux_connect(bcmolt_devid device, bcmos_ipv4_address ip_address, uint16_t udp_port) |
| 449 | #else |
| 450 | bcmos_errno bcmtrmux_connect(bcmolt_devid device, uint32_t txq_size, uint32_t rxq_size) |
| 451 | #endif |
| 452 | { |
| 453 | static char task_name[BCMTR_MAX_OLTS][16]; |
| 454 | bcmos_task_parm taskp = {}; |
| 455 | bcmos_errno rc; |
| 456 | |
| 457 | if (bcmtr_mux_connected[device]) |
| 458 | { |
| 459 | return BCM_ERR_ALREADY; |
| 460 | } |
| 461 | |
| 462 | snprintf(task_name[device], sizeof(task_name[device]), "bcmtr_rx%d", device); |
| 463 | taskp.data = (long)device; |
| 464 | taskp.name = task_name[device]; |
| 465 | |
| 466 | #ifdef IN_BAND |
| 467 | rc = bcmtrmux_ib_connect(device, ip_address, udp_port); |
| 468 | if (rc) |
| 469 | { |
| 470 | BCMTRMUX_LOG("%s: Failed to init inband device. Error %d\n", __FUNCTION__, rc); |
| 471 | return rc; |
| 472 | } |
| 473 | taskp.handler = _bcmtrmux_ib_rx_handler; |
| 474 | #else |
| 475 | rc = bcmos_sem_create(&bcmtrmux_rx_lock[device], 0, 0, NULL); |
| 476 | if (rc) |
| 477 | { |
| 478 | BCMTRMUX_LOG("%s: Failed to create rx lock. Error %d\n", __FUNCTION__, rc); |
| 479 | return rc; |
| 480 | } |
| 481 | |
| 482 | /* Initialize low-level PCIe transport */ |
| 483 | rc = bcmtrmux_pcie_init(device, txq_size, rxq_size); |
| 484 | if (rc) |
| 485 | { |
| 486 | bcmos_sem_destroy(&bcmtrmux_rx_lock[device]); |
| 487 | BCMTRMUX_LOG("%s: Failed to init low-level PCIe transport. Error %d\n", __FUNCTION__, rc); |
| 488 | return rc; |
| 489 | } |
| 490 | taskp.handler = _bcmtrmux_pcie_rx_handler; |
| 491 | |
| 492 | rc = bcmtr_swq_device_init(device); |
| 493 | if (rc) |
| 494 | { |
| 495 | bcmos_sem_destroy(&bcmtrmux_rx_lock[device]); |
| 496 | BCMTRMUX_LOG("%s: Failed to init pcie_swq. Error %d\n", __FUNCTION__, rc); |
| 497 | return rc; |
| 498 | } |
| 499 | |
| 500 | #endif |
| 501 | bcmtr_mux_connected[device] = BCMOS_TRUE; |
| 502 | bcmtr_mux_terminated[device] = BCMOS_FALSE; |
| 503 | |
| 504 | rc = bcmos_task_create(&bcmtrmux_rx_task[device], &taskp); |
| 505 | if (rc) |
| 506 | { |
| 507 | #ifndef IN_BAND |
| 508 | bcmos_sem_destroy(&bcmtrmux_rx_lock[device]); |
| 509 | #endif |
| 510 | bcmtr_mux_connected[device] = BCMOS_FALSE; |
| 511 | BCMTRMUX_LOG("%s: Failed to create rx task. Error %d\n", __FUNCTION__, rc); |
| 512 | return rc; |
| 513 | } |
| 514 | |
| 515 | return BCM_ERR_OK; |
| 516 | } |
| 517 | |
| 518 | /** Notify mux driver that low-level transport connection is disconnected |
| 519 | * \returns: 0 in case of success or error code < 0 |
| 520 | */ |
| 521 | bcmos_errno bcmtrmux_disconnect(bcmolt_devid device) |
| 522 | { |
| 523 | if (!bcmtr_mux_connected[device]) |
| 524 | { |
| 525 | return BCM_ERR_ALREADY; |
| 526 | } |
| 527 | bcmtr_mux_connected[device] = BCMOS_FALSE; |
| 528 | #ifdef IN_BAND |
| 529 | bcmtr_ib_disconnect((uint8_t)device); |
| 530 | #else |
| 531 | bcmos_sem_post(&bcmtrmux_rx_lock[device]); |
| 532 | #endif |
| 533 | while (!bcmtr_mux_terminated[device]) |
| 534 | { |
| 535 | bcmos_usleep(10000); |
| 536 | } |
| 537 | bcmos_task_destroy(&bcmtrmux_rx_task[device]); |
| 538 | #ifndef IN_BAND |
| 539 | bcmos_sem_destroy(&bcmtrmux_rx_lock[device]); |
| 540 | bcmtr_swq_device_exit(device); |
| 541 | bcmtr_pcie_disconnect((uint8_t)device); |
| 542 | #endif |
| 543 | return BCM_ERR_OK; |
| 544 | } |
| 545 | |
| 546 | /** Cleanup and exit |
| 547 | */ |
| 548 | void bcmtrmux_exit(void) |
| 549 | { |
| 550 | int i; |
| 551 | |
| 552 | BCMTRMUX_LOG("Cleaning up transport MUX subsystem\n"); |
| 553 | #ifndef IN_BAND |
| 554 | bcmtr_swq_exit(); |
| 555 | bcmtr_pcie_rx_irq_cblk_unregister(); |
| 556 | bcmtr_pcie_tx_irq_cblk_unregister(); |
| 557 | #endif |
| 558 | /* kill receive tasks */ |
| 559 | for (i=0; i<BCMTR_MAX_OLTS; i++) |
| 560 | { |
| 561 | bcmtrmux_disconnect((bcmolt_devid)i); |
| 562 | } |
| 563 | #ifdef IN_BAND |
| 564 | bcmtr_ib_exit(); |
| 565 | #else |
| 566 | bcmtr_pcie_exit(); |
| 567 | #endif |
| 568 | BCMTRMUX_LOG("Transport MUX cleanup done\n"); |
| 569 | } |
| 570 | |
| 571 | /** Register PCIe channel owner */ |
| 572 | bcmos_errno bcmtrmux_channel_register(bcmolt_devid device, bcmtrmux_channel *channel, |
| 573 | f_bcmtr_rx_handler rx, void *data) |
| 574 | { |
| 575 | bcmtrmux_channel ch; |
| 576 | long flags; |
| 577 | |
| 578 | if ((unsigned)device >= BCMTR_MAX_OLTS || !channel || !rx) |
| 579 | { |
| 580 | return BCM_ERR_PARM; |
| 581 | } |
| 582 | ch = *channel; |
| 583 | |
| 584 | flags = bcmos_fastlock_lock(&bcmtrmux_lock); |
| 585 | |
| 586 | if (ch == BCMTRMUX_CHANNEL_AUTO_ASSIGN) |
| 587 | { |
| 588 | /* Auto-assign free channel */ |
| 589 | ch = (bcmtrmux_channel)bcmtrmux_channel_get_free(device); |
| 590 | if (ch >= BCMTRMUX_MAX_CHANNELS) |
| 591 | { |
| 592 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 593 | return BCM_ERR_NORES; |
| 594 | } |
| 595 | } |
| 596 | |
| 597 | /* Make sure that channel is valid and not busy */ |
| 598 | if ((unsigned)ch >= BCMTRMUX_MAX_CHANNELS) |
| 599 | { |
| 600 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 601 | return BCM_ERR_PARM; |
| 602 | } |
| 603 | if (bcmtrmux_rx_info_array[device][ch].rx != bcmtrmux_rx_discard) |
| 604 | { |
| 605 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 606 | return BCM_ERR_ALREADY; |
| 607 | } |
| 608 | |
| 609 | /* Assign channel */ |
| 610 | bcmtrmux_rx_info_array[device][ch].rx = rx; |
| 611 | bcmtrmux_rx_info_array[device][ch].data = data; |
| 612 | |
| 613 | #ifndef IN_BAND |
| 614 | /* Urgent channels are not supported for IN-BAND management */ |
| 615 | if (ch >= BCMTRMUX_FIRST_URGENT_CHANNEL) |
| 616 | { |
| 617 | /* We use transmit confirmation interrupt to kick transmission |
| 618 | * if PCI bus is shared between high and low-priority channels |
| 619 | */ |
| 620 | if (!num_urgent_channels[device]) |
| 621 | bcmtr_pcie_txint_enable(device); |
| 622 | ++num_urgent_channels[device]; |
| 623 | } |
| 624 | #endif |
| 625 | |
| 626 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 627 | |
| 628 | *channel = ch; |
| 629 | |
| 630 | return BCM_ERR_OK; |
| 631 | } |
| 632 | |
| 633 | |
| 634 | /** Release PCIe channel allocated by bcmtrmux_channel_register() |
| 635 | * |
| 636 | * \param[in] device Maple device index |
| 637 | * \param[in] channel |
| 638 | * \returns: 0 in case of success or error code < 0 |
| 639 | */ |
| 640 | bcmos_errno bcmtrmux_channel_unregister(bcmolt_devid device, bcmtrmux_channel channel) |
| 641 | { |
| 642 | long flags; |
| 643 | |
| 644 | if ((unsigned)device >= BCMTR_MAX_OLTS || (unsigned)channel >= BCMTRMUX_MAX_CHANNELS) |
| 645 | { |
| 646 | return BCM_ERR_PARM; |
| 647 | } |
| 648 | |
| 649 | flags = bcmos_fastlock_lock(&bcmtrmux_lock); |
| 650 | |
| 651 | if (bcmtrmux_rx_info_array[device][channel].rx == bcmtrmux_rx_discard) |
| 652 | { |
| 653 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 654 | return BCM_ERR_NOENT; |
| 655 | } |
| 656 | |
| 657 | bcmtrmux_rx_info_array[device][channel].rx = bcmtrmux_rx_discard; |
| 658 | bcmtrmux_rx_info_array[device][channel].data = &bcmtrmux_stat_array[device].rx_disc_remote; |
| 659 | |
| 660 | #ifndef IN_BAND |
| 661 | /* Urgent channels are not supported for IN-BAND management */ |
| 662 | if (channel >= BCMTRMUX_FIRST_URGENT_CHANNEL) |
| 663 | { |
| 664 | --num_urgent_channels[device]; |
| 665 | /* If PCI bus is not shared between normal and urgent channels, |
| 666 | * transmit confirmation mechanism is not needed |
| 667 | */ |
| 668 | if (!num_urgent_channels[device]) |
| 669 | bcmtr_pcie_txint_disable(device); |
| 670 | } |
| 671 | #endif |
| 672 | |
| 673 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 674 | |
| 675 | return BCM_ERR_OK; |
| 676 | } |
| 677 | |
| 678 | /* |
| 679 | * Local termination handler |
| 680 | */ |
| 681 | |
| 682 | /* Register local termination handler. */ |
| 683 | bcmos_errno bcmtrmux_local_handler_register(bcmolt_devid device, f_bcmtr_local_rx_handler rx, void *data) |
| 684 | { |
| 685 | long flags; |
| 686 | |
| 687 | if ((unsigned)device >= BCMTR_MAX_OLTS || !rx) |
| 688 | { |
| 689 | return BCM_ERR_PARM; |
| 690 | } |
| 691 | flags = bcmos_fastlock_lock(&bcmtrmux_lock); |
| 692 | if (bcmtrmux_local_rx_info_array[device].rx != bcmtrmux_local_rx_discard) |
| 693 | { |
| 694 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 695 | return BCM_ERR_ALREADY; |
| 696 | } |
| 697 | bcmtrmux_local_rx_info_array[device].rx = rx; |
| 698 | bcmtrmux_local_rx_info_array[device].data = data; |
| 699 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 700 | return BCM_ERR_OK; |
| 701 | } |
| 702 | |
| 703 | |
| 704 | /* Unregister local termination handler registered by bcmtrmux_local_handler_register() */ |
| 705 | bcmos_errno bcmtrmux_local_handler_unregister(bcmolt_devid device) |
| 706 | { |
| 707 | long flags; |
| 708 | |
| 709 | if ((unsigned)device >= BCMTR_MAX_OLTS) |
| 710 | { |
| 711 | return BCM_ERR_PARM; |
| 712 | } |
| 713 | flags = bcmos_fastlock_lock(&bcmtrmux_lock); |
| 714 | if (bcmtrmux_local_rx_info_array[device].rx == bcmtrmux_local_rx_discard) |
| 715 | { |
| 716 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 717 | return BCM_ERR_NOENT; |
| 718 | } |
| 719 | bcmtrmux_local_rx_info_array[device].data = &bcmtrmux_stat_array[device].tx_disc_local; |
| 720 | bcmtrmux_local_rx_info_array[device].rx = bcmtrmux_local_rx_discard; |
| 721 | bcmos_fastlock_unlock(&bcmtrmux_lock, flags); |
| 722 | return BCM_ERR_OK; |
| 723 | } |
| 724 | |
| 725 | /* Deliver message to local destination */ |
| 726 | static bcmos_bool bcmtrmux_deliver_to_local(bcmolt_devid device, bcmtrmux_channel channel, bcmos_buf *buf, bcmtr_hdr *hdr) |
| 727 | { |
| 728 | bcmtrmux_local_rx_info *rx_info; |
| 729 | bcmolt_msg *msg = NULL; |
| 730 | bcmolt_buf ubuf; |
| 731 | bcmos_errno err; |
| 732 | |
| 733 | /* Unpack */ |
| 734 | bcmolt_buf_init(&ubuf, bcmos_buf_length(buf), bcmos_buf_data(buf), BCMTR_BUF_ENDIAN); |
| 735 | bcmolt_buf_skip(&ubuf, BCMTR_HDR_SIZE); |
| 736 | err = bcmolt_msg_unpack(&ubuf, &msg); |
| 737 | bcmos_buf_free(buf); |
| 738 | if (err < 0) |
| 739 | { |
| 740 | BCMOS_TRACE_ERR("Message unpack error %s (%d)\n", bcmos_strerror(err), err); |
| 741 | ++bcmtrmux_stat_array[device].tx_disc_local; |
| 742 | return BCMOS_TRUE; |
| 743 | } |
| 744 | msg->corr_tag = hdr->corr_tag; |
| 745 | msg->subch = (bcmolt_subchannel)channel; |
| 746 | ++bcmtrmux_stat_array[device].tx_local; |
| 747 | |
| 748 | rx_info = &bcmtrmux_local_rx_info_array[device]; |
| 749 | rx_info->rx(device, msg, rx_info->data); |
| 750 | return BCMOS_TRUE; |
| 751 | } |
| 752 | |
| 753 | /* send to line with repetitive attempts if pcie buffer is full */ |
| 754 | static void bcmtrmux_send_to_line(bcmolt_devid device, bcmtrmux_channel channel, bcmos_buf *buf) |
| 755 | { |
| 756 | bcmos_errno rc; |
| 757 | |
| 758 | #ifdef IN_BAND |
| 759 | rc = bcmtr_ib_send((uint8_t)device, (uint8_t)channel, buf); |
| 760 | #else |
| 761 | rc = bcmtr_swq_send((uint8_t)device, channel, buf); |
| 762 | #endif |
| 763 | if (rc != BCM_ERR_OK) |
| 764 | { |
| 765 | /* Failed */ |
| 766 | ++bcmtrmux_stat_array[device].tx_disc_remote; |
| 767 | bcmos_buf_free(buf); |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | /* Receive message from host application */ |
| 772 | void bcmtrmux_rx_from_host(bcmolt_devid device, bcmtrmux_channel channel, bcmos_buf *buf) |
| 773 | { |
| 774 | bcmtr_hdr hdr; |
| 775 | bcmolt_obj_id obj; |
| 776 | bcmolt_mgt_group group; |
| 777 | uint16_t subgroup; |
| 778 | bcmos_errno rc; |
| 779 | |
| 780 | /* Validate parameters */ |
| 781 | BUG_ON((unsigned)device >= BCMTR_MAX_OLTS); |
| 782 | BUG_ON((unsigned)channel >= BCMTRMUX_MAX_CHANNELS); |
| 783 | |
| 784 | /* Peek in transport header. It contains enough info to decide what to do with the message */ |
| 785 | bcmtr_header_unpack(bcmos_buf_data(buf), &hdr); |
| 786 | |
| 787 | rc = bcmolt_group_id_split(hdr.msg_id, &obj, &group, &subgroup); |
| 788 | if (rc) |
| 789 | { |
| 790 | BCMOS_TRACE_ERR("Can't decode group_id %u. Error %s (%d)\n", hdr.msg_id, bcmos_strerror(rc), rc); |
| 791 | ++bcmtrmux_stat_array[device].tx_disc_remote; |
| 792 | bcmos_buf_free(buf); |
| 793 | return; |
| 794 | } |
| 795 | |
| 796 | /* Filter auto/proxy (un)registration. |
| 797 | * This message is terminated here. |
| 798 | */ |
| 799 | if (hdr.auto_proxy_reg || hdr.auto_proxy_unreg) |
| 800 | { |
| 801 | bcmtrmux_channel *p_ch = (group == BCMOLT_MGT_GROUP_AUTO) ? |
| 802 | &bcmtrmux_auto_channels[device][hdr.instance][obj] : &bcmtrmux_proxy_channels[device][hdr.instance][obj]; |
| 803 | |
| 804 | bcmos_buf_free(buf); |
| 805 | |
| 806 | /* Sanity check */ |
| 807 | if (hdr.instance >= BCMTR_MAX_INSTANCES || obj >= BCMOLT_OBJ_ID__NUM_OF) |
| 808 | { |
| 809 | BCMOS_TRACE_ERR("Instance %u or object %d is insane\n", hdr.instance, obj); |
| 810 | return; |
| 811 | } |
| 812 | |
| 813 | /* Do not override bcmolt_dev_ctrl filters */ |
| 814 | if (*p_ch != BCMTRMUX_CHANNEL_DEV_CONTROL) |
| 815 | { |
| 816 | *p_ch = hdr.auto_proxy_reg ? channel : BCMTRMUX_MAX_CHANNELS; |
| 817 | } |
| 818 | |
| 819 | return; |
| 820 | } |
| 821 | |
| 822 | /* Filter message that should go to local destination (device control) */ |
| 823 | if (bcmtrmux_msg_filter_cb && bcmtrmux_msg_filter_cb(device, obj, group, subgroup) == BCMTRMUX_DEST_LOCAL) |
| 824 | { |
| 825 | if (bcmtrmux_deliver_to_local(device, channel, buf, &hdr) == BCMOS_TRUE) |
| 826 | return; |
| 827 | } |
| 828 | |
| 829 | /* Handle Remote message */ |
| 830 | ++bcmtrmux_stat_array[device].tx_remote; |
| 831 | bcmtrmux_send_to_line(device, channel, buf); |
| 832 | } |
| 833 | |
| 834 | |
| 835 | /* Receive packet from the line or local control process. |
| 836 | * Parameters are expected to be checked beforehand. |
| 837 | * The function de-muxes |
| 838 | * - replies based on channel |
| 839 | * - autonomous/proxy messages based on registration info |
| 840 | */ |
| 841 | static void bcmtrmux_rx(bcmolt_devid device, bcmtrmux_channel channel, bcmos_buf *buf) |
| 842 | { |
| 843 | bcmtrmux_rx_info *rx_info; |
| 844 | rx_info = &bcmtrmux_rx_info_array[device][channel]; |
| 845 | rx_info->rx(device, buf, channel, rx_info->data); |
| 846 | } |
| 847 | |
| 848 | |
| 849 | /* Receive packet from PCIe interface */ |
| 850 | void bcmtrmux_rx_from_line(bcmolt_devid device, bcmtrmux_channel channel, bcmos_buf *buf) |
| 851 | { |
| 852 | BUG_ON((unsigned)device >= BCMTR_MAX_OLTS); |
| 853 | |
| 854 | if ((unsigned)channel >= BCMTRMUX_MAX_CHANNELS) |
| 855 | { |
| 856 | ++bcmtrmux_stat_array[device].rx_disc_inv_ch; |
| 857 | bcmos_buf_free(buf); |
| 858 | return; |
| 859 | } |
| 860 | |
| 861 | ++bcmtrmux_stat_array[device].rx_remote; |
| 862 | |
| 863 | bcmtrmux_rx(device, channel, buf); |
| 864 | } |
| 865 | |
| 866 | /* Handle message received via Auto/Proxy channel */ |
| 867 | static void bcmtrmux_rx_auto_proxy(bcmolt_devid device, bcmos_buf *buf, bcmtrmux_channel channel, void *data) |
| 868 | { |
| 869 | bcmtr_hdr hdr; |
| 870 | bcmolt_obj_id obj; |
| 871 | bcmolt_mgt_group group; |
| 872 | uint16_t subgroup; |
| 873 | bcmos_errno rc; |
| 874 | |
| 875 | /* Peek in transport header. It contains enough info to decide what to do with the message */ |
| 876 | bcmtr_header_unpack(bcmos_buf_data(buf), &hdr); |
| 877 | |
| 878 | rc = bcmolt_group_id_split(hdr.msg_id, &obj, &group, &subgroup); |
| 879 | if (rc) |
| 880 | { |
| 881 | BCMOS_TRACE_ERR("Can't decode group_id %u. Error %s (%d)\n", hdr.msg_id, bcmos_strerror(rc), rc); |
| 882 | ++bcmtrmux_stat_array[device].rx_disc_auto; |
| 883 | bcmos_buf_free(buf); |
| 884 | return; |
| 885 | } |
| 886 | |
| 887 | /* Sanity check */ |
| 888 | if (hdr.instance >= BCMTR_MAX_INSTANCES || obj >= BCMOLT_OBJ_ID__NUM_OF) |
| 889 | { |
| 890 | BCMOS_TRACE_ERR("Instance %u or object %d is insane\n", hdr.instance, obj); |
| 891 | ++bcmtrmux_stat_array[device].rx_disc_auto; |
| 892 | bcmos_buf_free(buf); |
| 893 | return; |
| 894 | } |
| 895 | |
| 896 | /* Dispatch based on object id */ |
| 897 | /* Handle dev_ctrl intercept */ |
| 898 | if (bcmtrmux_dev_ctrl_intercept[device][hdr.msg_id]) |
| 899 | { |
| 900 | channel = BCMTRMUX_CHANNEL_DEV_CONTROL; |
| 901 | } |
| 902 | else |
| 903 | { |
| 904 | channel = (group == BCMOLT_MGT_GROUP_AUTO) ? |
| 905 | bcmtrmux_auto_channels[device][hdr.instance][obj] : bcmtrmux_proxy_channels[device][hdr.instance][obj]; |
| 906 | } |
| 907 | |
| 908 | /* If no registration - discard */ |
| 909 | if (channel >= BCMTRMUX_MAX_CHANNELS) |
| 910 | { |
| 911 | ++bcmtrmux_stat_array[device].rx_disc_auto; |
| 912 | bcmos_buf_free(buf); |
| 913 | return; |
| 914 | } |
| 915 | bcmtrmux_rx(device, channel, buf); |
| 916 | } |
| 917 | |
| 918 | /* Handle message received via DEV_CONTROL channel */ |
| 919 | static void bcmtrmux_rx_local(bcmolt_devid device, bcmos_buf *buf, bcmtrmux_channel channel, void *data) |
| 920 | { |
| 921 | bcmtrmux_local_rx_info *rx_info; |
| 922 | bcmtr_hdr hdr; |
| 923 | bcmolt_buf ubuf; |
| 924 | bcmolt_msg *msg = NULL; |
| 925 | bcmos_errno err; |
| 926 | |
| 927 | bcmtr_header_unpack(bcmos_buf_data(buf), &hdr); |
| 928 | |
| 929 | bcmolt_buf_init(&ubuf, bcmos_buf_length(buf), bcmos_buf_data(buf), BCMTR_BUF_ENDIAN); |
| 930 | bcmolt_buf_skip(&ubuf, BCMTR_HDR_SIZE); |
| 931 | err = bcmolt_msg_unpack(&ubuf, &msg); |
| 932 | bcmos_buf_free(buf); |
| 933 | if (err < 0) |
| 934 | { |
| 935 | BCMOS_TRACE_ERR("Message unpack error %s (%d)\n", bcmos_strerror(err), err); |
| 936 | ++bcmtrmux_stat_array[device].rx_disc_remote; |
| 937 | return; |
| 938 | } |
| 939 | |
| 940 | msg->corr_tag = hdr.corr_tag; |
| 941 | msg->subch = (bcmolt_subchannel)channel; |
| 942 | ++bcmtrmux_stat_array[device].rx_local; |
| 943 | |
| 944 | rx_info = &bcmtrmux_local_rx_info_array[device]; |
| 945 | rx_info->rx(device, msg, rx_info->data); |
| 946 | } |
| 947 | |
| 948 | static bcmos_errno bcmtrmux_msg_pack(bcmolt_devid device, bcmolt_msg *msg, bcmos_buf **p_buf) |
| 949 | { |
| 950 | int32_t len = bcmolt_msg_get_packed_length(msg); |
| 951 | bcmos_buf *buf; |
| 952 | bcmolt_buf ubuf; |
| 953 | bcmos_errno rc = BCM_ERR_OK; |
| 954 | bcmtr_hdr thdr = {}; |
| 955 | |
| 956 | if (len < 0) |
| 957 | { |
| 958 | BCMOS_TRACE_ERR("Can't calculate packet length. Error %s (%d)\n", bcmos_strerror(rc), len); |
| 959 | return BCM_ERR_PARM; |
| 960 | } |
| 961 | rc = bcmtr_header_fill(msg, &thdr); |
| 962 | if (rc) |
| 963 | { |
| 964 | BCMOS_TRACE_ERR("Can't create transport header. Error %s (%d)\n", bcmos_strerror(rc), rc); |
| 965 | return BCM_ERR_PARM; |
| 966 | } |
| 967 | |
| 968 | len += BCMTR_HDR_SIZE; |
| 969 | buf = bcmos_buf_alloc(len); |
| 970 | if (!buf) |
| 971 | { |
| 972 | BCMOS_TRACE_ERR("Can't allocate packet buffer\n"); |
| 973 | return BCM_ERR_NOMEM; |
| 974 | } |
| 975 | bcmolt_buf_init(&ubuf, len, bcmos_buf_data(buf), BCMTR_BUF_ENDIAN); |
| 976 | bcmolt_buf_skip(&ubuf, BCMTR_HDR_SIZE); |
| 977 | |
| 978 | /* Pack transport header */ |
| 979 | bcmtr_header_pack(&thdr, ubuf.start); |
| 980 | |
| 981 | /* Pack message */ |
| 982 | rc = bcmolt_msg_pack(msg, &ubuf); |
| 983 | if (rc) |
| 984 | { |
| 985 | BCMOS_TRACE_ERR("Message pack failed. Error %s (%d)\n", bcmos_strerror(rc), rc); |
| 986 | bcmos_buf_free(buf); |
| 987 | return BCM_ERR_PARM; |
| 988 | } |
| 989 | bcmos_buf_length_set(buf, len); |
| 990 | |
| 991 | *p_buf = buf; |
| 992 | |
| 993 | return BCM_ERR_OK; |
| 994 | } |
| 995 | |
| 996 | /* Send packet from local control process to the host application */ |
| 997 | bcmos_errno bcmtrmux_control_to_host(bcmolt_devid device, bcmolt_msg *msg) |
| 998 | { |
| 999 | bcmtrmux_channel channel = (bcmtrmux_channel)msg->subch; |
| 1000 | bcmos_buf *buf; |
| 1001 | bcmos_errno rc; |
| 1002 | |
| 1003 | BUG_ON((unsigned)channel >= BCMTRMUX_MAX_CHANNELS); |
| 1004 | BUG_ON((unsigned)device >= BCMTR_MAX_OLTS); |
| 1005 | |
| 1006 | ++bcmtrmux_stat_array[device].control_to_host; |
| 1007 | |
| 1008 | rc = bcmtrmux_msg_pack(device, msg, &buf); |
| 1009 | if (rc) |
| 1010 | { |
| 1011 | return rc; |
| 1012 | } |
| 1013 | bcmtrmux_rx(device, channel, buf); |
| 1014 | return BCM_ERR_OK; |
| 1015 | } |
| 1016 | |
| 1017 | /* Send packet from local control process to the embedded system */ |
| 1018 | bcmos_errno bcmtrmux_control_to_line(bcmolt_devid device, bcmolt_msg *msg) |
| 1019 | { |
| 1020 | bcmos_buf *buf; |
| 1021 | bcmos_errno err; |
| 1022 | |
| 1023 | BUG_ON((unsigned)device >= BCMTR_MAX_OLTS); |
| 1024 | |
| 1025 | ++bcmtrmux_stat_array[device].control_to_line; |
| 1026 | |
| 1027 | err = bcmtrmux_msg_pack(device, msg, &buf); |
| 1028 | if (err) |
| 1029 | { |
| 1030 | return err; |
| 1031 | } |
| 1032 | |
| 1033 | bcmtrmux_send_to_line(device, BCMTRMUX_CHANNEL_DEV_CONTROL, buf); |
| 1034 | |
| 1035 | return err; |
| 1036 | } |
| 1037 | |
| 1038 | /* Register message for intercept by bcmolt_dev_ctrl */ |
| 1039 | bcmos_errno bcmtrmux_control_auto_intercept_filter(bcmolt_devid device, bcmolt_obj_id object, uint16_t subgroup) |
| 1040 | { |
| 1041 | bcmos_errno err; |
| 1042 | bcmolt_group_id msg_id; |
| 1043 | |
| 1044 | if ((unsigned)device >= BCMTR_MAX_OLTS) |
| 1045 | { |
| 1046 | return BCM_ERR_PARM; |
| 1047 | } |
| 1048 | err = bcmolt_group_id_combine(object, BCMOLT_MGT_GROUP_AUTO, subgroup, &msg_id); |
| 1049 | if (err) |
| 1050 | { |
| 1051 | BCMOS_TRACE_ERR("Can't identify operation %d for object %d. Error %s (%d)\n", |
| 1052 | (int)subgroup, (int)object, bcmos_strerror(err), err); |
| 1053 | return err; |
| 1054 | } |
| 1055 | bcmtrmux_dev_ctrl_intercept[device][msg_id] = BCMOS_TRUE; |
| 1056 | return BCM_ERR_OK; |
| 1057 | } |
| 1058 | |
| 1059 | |
| 1060 | /** Get transport mux statistics. |
| 1061 | * |
| 1062 | * \param[in] device Maple device index |
| 1063 | * \param[out] stat Statistics |
| 1064 | * \returns: 0 in case of success or error code < 0 |
| 1065 | */ |
| 1066 | bcmos_errno bcmtrmux_stat_get(bcmolt_devid device, bcmtrmux_stat *stat) |
| 1067 | { |
| 1068 | if ((unsigned)device >= BCMTR_MAX_OLTS || !stat) |
| 1069 | { |
| 1070 | return BCM_ERR_PARM; |
| 1071 | } |
| 1072 | *stat = bcmtrmux_stat_array[device]; |
| 1073 | return BCM_ERR_OK; |
| 1074 | } |
| 1075 | |
| 1076 | #ifdef __KERNEL__ |
| 1077 | |
| 1078 | EXPORT_SYMBOL(bcmtrmux_init); |
| 1079 | EXPORT_SYMBOL(bcmtrmux_connect); |
| 1080 | EXPORT_SYMBOL(bcmtrmux_disconnect); |
| 1081 | EXPORT_SYMBOL(bcmtrmux_channel_register); |
| 1082 | EXPORT_SYMBOL(bcmtrmux_channel_unregister); |
| 1083 | EXPORT_SYMBOL(bcmtrmux_local_handler_register); |
| 1084 | EXPORT_SYMBOL(bcmtrmux_local_handler_unregister); |
| 1085 | EXPORT_SYMBOL(bcmtrmux_rx_from_host); |
| 1086 | EXPORT_SYMBOL(bcmtrmux_rx_from_line); |
| 1087 | EXPORT_SYMBOL(bcmtrmux_control_to_host); |
| 1088 | EXPORT_SYMBOL(bcmtrmux_control_to_line); |
| 1089 | EXPORT_SYMBOL(bcmtrmux_control_auto_intercept_filter); |
| 1090 | EXPORT_SYMBOL(bcmtrmux_stat_get); |
| 1091 | |
| 1092 | #endif |