xref: /dpdk/drivers/net/ark/ark_ethdev.c (revision 5a4806d304e084573eb2193341add736ef0af50f)
1 /*-
2  * BSD LICENSE
3  *
4  * Copyright (c) 2015-2017 Atomic Rules LLC
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  *
11  * * Redistributions of source code must retain the above copyright
12  * notice, this list of conditions and the following disclaimer.
13  * * Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  * * Neither the name of copyright holder nor the names of its
18  * contributors may be used to endorse or promote products derived
19  * from this software without specific prior written permission.
20  *
21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32  */
33 
34 #include <unistd.h>
35 #include <sys/stat.h>
36 #include <dlfcn.h>
37 
38 #include <rte_ethdev_pci.h>
39 #include <rte_kvargs.h>
40 
41 #include "ark_global.h"
42 #include "ark_logs.h"
43 #include "ark_ethdev_tx.h"
44 #include "ark_ethdev_rx.h"
45 #include "ark_mpu.h"
46 #include "ark_ddm.h"
47 #include "ark_udm.h"
48 #include "ark_rqp.h"
49 #include "ark_pktdir.h"
50 #include "ark_pktgen.h"
51 #include "ark_pktchkr.h"
52 
53 /*  Internal prototypes */
54 static int eth_ark_check_args(struct ark_adapter *ark, const char *params);
55 static int eth_ark_dev_init(struct rte_eth_dev *dev);
56 static int ark_config_device(struct rte_eth_dev *dev);
57 static int eth_ark_dev_uninit(struct rte_eth_dev *eth_dev);
58 static int eth_ark_dev_configure(struct rte_eth_dev *dev);
59 static int eth_ark_dev_start(struct rte_eth_dev *dev);
60 static void eth_ark_dev_stop(struct rte_eth_dev *dev);
61 static void eth_ark_dev_close(struct rte_eth_dev *dev);
62 static void eth_ark_dev_info_get(struct rte_eth_dev *dev,
63 				 struct rte_eth_dev_info *dev_info);
64 static int eth_ark_dev_link_update(struct rte_eth_dev *dev,
65 				   int wait_to_complete);
66 static int eth_ark_dev_set_link_up(struct rte_eth_dev *dev);
67 static int eth_ark_dev_set_link_down(struct rte_eth_dev *dev);
68 static void eth_ark_dev_stats_get(struct rte_eth_dev *dev,
69 				  struct rte_eth_stats *stats);
70 static void eth_ark_dev_stats_reset(struct rte_eth_dev *dev);
71 static void eth_ark_set_default_mac_addr(struct rte_eth_dev *dev,
72 					 struct ether_addr *mac_addr);
73 static int eth_ark_macaddr_add(struct rte_eth_dev *dev,
74 			       struct ether_addr *mac_addr,
75 			       uint32_t index,
76 			       uint32_t pool);
77 static void eth_ark_macaddr_remove(struct rte_eth_dev *dev,
78 				   uint32_t index);
79 static int  eth_ark_set_mtu(struct rte_eth_dev *dev, uint16_t size);
80 
81 /*
82  * The packet generator is a functional block used to generate packet
83  * patterns for testing.  It is not intended for nominal use.
84  */
85 #define ARK_PKTGEN_ARG "Pkt_gen"
86 
87 /*
88  * The packet checker is a functional block used to verify packet
89  * patterns for testing.  It is not intended for nominal use.
90  */
91 #define ARK_PKTCHKR_ARG "Pkt_chkr"
92 
93 /*
94  * The packet director is used to select the internal ingress and
95  * egress packets paths during testing.  It is not intended for
96  * nominal use.
97  */
98 #define ARK_PKTDIR_ARG "Pkt_dir"
99 
100 /* Devinfo configurations */
101 #define ARK_RX_MAX_QUEUE (4096 * 4)
102 #define ARK_RX_MIN_QUEUE (512)
103 #define ARK_RX_MAX_PKT_LEN ((16 * 1024) - 128)
104 #define ARK_RX_MIN_BUFSIZE (1024)
105 
106 #define ARK_TX_MAX_QUEUE (4096 * 4)
107 #define ARK_TX_MIN_QUEUE (256)
108 
109 static const char * const valid_arguments[] = {
110 	ARK_PKTGEN_ARG,
111 	ARK_PKTCHKR_ARG,
112 	ARK_PKTDIR_ARG,
113 	NULL
114 };
115 
116 static const struct rte_pci_id pci_id_ark_map[] = {
117 	{RTE_PCI_DEVICE(0x1d6c, 0x100d)},
118 	{RTE_PCI_DEVICE(0x1d6c, 0x100e)},
119 	{.vendor_id = 0, /* sentinel */ },
120 };
121 
122 static int
123 eth_ark_pci_probe(struct rte_pci_driver *pci_drv __rte_unused,
124 		struct rte_pci_device *pci_dev)
125 {
126 	struct rte_eth_dev *eth_dev;
127 	int ret;
128 
129 	eth_dev = rte_eth_dev_pci_allocate(pci_dev, sizeof(struct ark_adapter));
130 
131 	if (eth_dev == NULL)
132 		return -ENOMEM;
133 
134 	ret = eth_ark_dev_init(eth_dev);
135 	if (ret)
136 		rte_eth_dev_pci_release(eth_dev);
137 
138 	return ret;
139 }
140 
141 static int
142 eth_ark_pci_remove(struct rte_pci_device *pci_dev)
143 {
144 	return rte_eth_dev_pci_generic_remove(pci_dev, eth_ark_dev_uninit);
145 }
146 
147 static struct rte_pci_driver rte_ark_pmd = {
148 	.id_table = pci_id_ark_map,
149 	.drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_INTR_LSC,
150 	.probe = eth_ark_pci_probe,
151 	.remove = eth_ark_pci_remove,
152 };
153 
154 static const struct eth_dev_ops ark_eth_dev_ops = {
155 	.dev_configure = eth_ark_dev_configure,
156 	.dev_start = eth_ark_dev_start,
157 	.dev_stop = eth_ark_dev_stop,
158 	.dev_close = eth_ark_dev_close,
159 
160 	.dev_infos_get = eth_ark_dev_info_get,
161 
162 	.rx_queue_setup = eth_ark_dev_rx_queue_setup,
163 	.rx_queue_count = eth_ark_dev_rx_queue_count,
164 	.tx_queue_setup = eth_ark_tx_queue_setup,
165 
166 	.link_update = eth_ark_dev_link_update,
167 	.dev_set_link_up = eth_ark_dev_set_link_up,
168 	.dev_set_link_down = eth_ark_dev_set_link_down,
169 
170 	.rx_queue_start = eth_ark_rx_start_queue,
171 	.rx_queue_stop = eth_ark_rx_stop_queue,
172 
173 	.tx_queue_start = eth_ark_tx_queue_start,
174 	.tx_queue_stop = eth_ark_tx_queue_stop,
175 
176 	.stats_get = eth_ark_dev_stats_get,
177 	.stats_reset = eth_ark_dev_stats_reset,
178 
179 	.mac_addr_add = eth_ark_macaddr_add,
180 	.mac_addr_remove = eth_ark_macaddr_remove,
181 	.mac_addr_set = eth_ark_set_default_mac_addr,
182 
183 	.mtu_set = eth_ark_set_mtu,
184 };
185 
186 static int
187 check_for_ext(struct ark_adapter *ark)
188 {
189 	int found = 0;
190 
191 	/* Get the env */
192 	const char *dllpath = getenv("ARK_EXT_PATH");
193 
194 	if (dllpath == NULL) {
195 		PMD_DEBUG_LOG(DEBUG, "ARK EXT NO dll path specified\n");
196 		return 0;
197 	}
198 	PMD_DRV_LOG(INFO, "ARK EXT found dll path at %s\n", dllpath);
199 
200 	/* Open and load the .so */
201 	ark->d_handle = dlopen(dllpath, RTLD_LOCAL | RTLD_LAZY);
202 	if (ark->d_handle == NULL) {
203 		PMD_DRV_LOG(ERR, "Could not load user extension %s\n",
204 			    dllpath);
205 		return -1;
206 	}
207 	PMD_DRV_LOG(INFO, "SUCCESS: loaded user extension %s\n",
208 			    dllpath);
209 
210 	/* Get the entry points */
211 	ark->user_ext.dev_init =
212 		(void *(*)(struct rte_eth_dev *, void *, int))
213 		dlsym(ark->d_handle, "dev_init");
214 	PMD_DEBUG_LOG(DEBUG, "device ext init pointer = %p\n",
215 		      ark->user_ext.dev_init);
216 	ark->user_ext.dev_get_port_count =
217 		(int (*)(struct rte_eth_dev *, void *))
218 		dlsym(ark->d_handle, "dev_get_port_count");
219 	ark->user_ext.dev_uninit =
220 		(void (*)(struct rte_eth_dev *, void *))
221 		dlsym(ark->d_handle, "dev_uninit");
222 	ark->user_ext.dev_configure =
223 		(int (*)(struct rte_eth_dev *, void *))
224 		dlsym(ark->d_handle, "dev_configure");
225 	ark->user_ext.dev_start =
226 		(int (*)(struct rte_eth_dev *, void *))
227 		dlsym(ark->d_handle, "dev_start");
228 	ark->user_ext.dev_stop =
229 		(void (*)(struct rte_eth_dev *, void *))
230 		dlsym(ark->d_handle, "dev_stop");
231 	ark->user_ext.dev_close =
232 		(void (*)(struct rte_eth_dev *, void *))
233 		dlsym(ark->d_handle, "dev_close");
234 	ark->user_ext.link_update =
235 		(int (*)(struct rte_eth_dev *, int, void *))
236 		dlsym(ark->d_handle, "link_update");
237 	ark->user_ext.dev_set_link_up =
238 		(int (*)(struct rte_eth_dev *, void *))
239 		dlsym(ark->d_handle, "dev_set_link_up");
240 	ark->user_ext.dev_set_link_down =
241 		(int (*)(struct rte_eth_dev *, void *))
242 		dlsym(ark->d_handle, "dev_set_link_down");
243 	ark->user_ext.stats_get =
244 		(void (*)(struct rte_eth_dev *, struct rte_eth_stats *,
245 			  void *))
246 		dlsym(ark->d_handle, "stats_get");
247 	ark->user_ext.stats_reset =
248 		(void (*)(struct rte_eth_dev *, void *))
249 		dlsym(ark->d_handle, "stats_reset");
250 	ark->user_ext.mac_addr_add =
251 		(void (*)(struct rte_eth_dev *, struct ether_addr *, uint32_t,
252 			  uint32_t, void *))
253 		dlsym(ark->d_handle, "mac_addr_add");
254 	ark->user_ext.mac_addr_remove =
255 		(void (*)(struct rte_eth_dev *, uint32_t, void *))
256 		dlsym(ark->d_handle, "mac_addr_remove");
257 	ark->user_ext.mac_addr_set =
258 		(void (*)(struct rte_eth_dev *, struct ether_addr *,
259 			  void *))
260 		dlsym(ark->d_handle, "mac_addr_set");
261 	ark->user_ext.set_mtu =
262 		(int (*)(struct rte_eth_dev *, uint16_t,
263 			  void *))
264 		dlsym(ark->d_handle, "set_mtu");
265 
266 	return found;
267 }
268 
269 static int
270 eth_ark_dev_init(struct rte_eth_dev *dev)
271 {
272 	struct ark_adapter *ark =
273 		(struct ark_adapter *)dev->data->dev_private;
274 	struct rte_pci_device *pci_dev;
275 	int ret;
276 	int port_count = 1;
277 	int p;
278 
279 	ark->eth_dev = dev;
280 
281 	PMD_FUNC_LOG(DEBUG, "\n");
282 
283 	/* Check to see if there is an extension that we need to load */
284 	ret = check_for_ext(ark);
285 	if (ret)
286 		return ret;
287 	pci_dev = RTE_ETH_DEV_TO_PCI(dev);
288 	rte_eth_copy_pci_info(dev, pci_dev);
289 
290 	/* Use dummy function until setup */
291 	dev->rx_pkt_burst = &eth_ark_recv_pkts_noop;
292 	dev->tx_pkt_burst = &eth_ark_xmit_pkts_noop;
293 
294 	ark->bar0 = (uint8_t *)pci_dev->mem_resource[0].addr;
295 	ark->a_bar = (uint8_t *)pci_dev->mem_resource[2].addr;
296 
297 	ark->sysctrl.v  = (void *)&ark->bar0[ARK_SYSCTRL_BASE];
298 	ark->mpurx.v  = (void *)&ark->bar0[ARK_MPU_RX_BASE];
299 	ark->udm.v  = (void *)&ark->bar0[ARK_UDM_BASE];
300 	ark->mputx.v  = (void *)&ark->bar0[ARK_MPU_TX_BASE];
301 	ark->ddm.v  = (void *)&ark->bar0[ARK_DDM_BASE];
302 	ark->cmac.v  = (void *)&ark->bar0[ARK_CMAC_BASE];
303 	ark->external.v  = (void *)&ark->bar0[ARK_EXTERNAL_BASE];
304 	ark->pktdir.v  = (void *)&ark->bar0[ARK_PKTDIR_BASE];
305 	ark->pktgen.v  = (void *)&ark->bar0[ARK_PKTGEN_BASE];
306 	ark->pktchkr.v  = (void *)&ark->bar0[ARK_PKTCHKR_BASE];
307 
308 	ark->rqpacing =
309 		(struct ark_rqpace_t *)(ark->bar0 + ARK_RCPACING_BASE);
310 	ark->started = 0;
311 
312 	PMD_DEBUG_LOG(INFO, "Sys Ctrl Const = 0x%x  HW Commit_ID: %08x\n",
313 		      ark->sysctrl.t32[4],
314 		      rte_be_to_cpu_32(ark->sysctrl.t32[0x20 / 4]));
315 	PMD_DRV_LOG(INFO, "Arkville HW Commit_ID: %08x\n",
316 		    rte_be_to_cpu_32(ark->sysctrl.t32[0x20 / 4]));
317 
318 	/* If HW sanity test fails, return an error */
319 	if (ark->sysctrl.t32[4] != 0xcafef00d) {
320 		PMD_DRV_LOG(ERR,
321 			    "HW Sanity test has failed, expected constant"
322 			    " 0x%x, read 0x%x (%s)\n",
323 			    0xcafef00d,
324 			    ark->sysctrl.t32[4], __func__);
325 		return -1;
326 	}
327 	if (ark->sysctrl.t32[3] != 0) {
328 		if (ark_rqp_lasped(ark->rqpacing)) {
329 			PMD_DRV_LOG(ERR, "Arkville Evaluation System - "
330 				    "Timer has Expired\n");
331 			return -1;
332 		}
333 		PMD_DRV_LOG(WARNING, "Arkville Evaluation System - "
334 			    "Timer is Running\n");
335 	}
336 
337 	PMD_DRV_LOG(INFO,
338 		    "HW Sanity test has PASSED, expected constant"
339 		    " 0x%x, read 0x%x (%s)\n",
340 		    0xcafef00d, ark->sysctrl.t32[4], __func__);
341 
342 	/* We are a single function multi-port device. */
343 	ret = ark_config_device(dev);
344 	dev->dev_ops = &ark_eth_dev_ops;
345 	dev->data->dev_flags |= RTE_ETH_DEV_DETACHABLE;
346 
347 	dev->data->mac_addrs = rte_zmalloc("ark", ETHER_ADDR_LEN, 0);
348 	if (!dev->data->mac_addrs) {
349 		PMD_DRV_LOG(ERR,
350 			    "Failed to allocated memory for storing mac address"
351 			    );
352 	}
353 
354 	if (ark->user_ext.dev_init) {
355 		ark->user_data[dev->data->port_id] =
356 			ark->user_ext.dev_init(dev, ark->a_bar, 0);
357 		if (!ark->user_data[dev->data->port_id]) {
358 			PMD_DRV_LOG(INFO,
359 				    "Failed to initialize PMD extension!"
360 				    " continuing without it\n");
361 			memset(&ark->user_ext, 0, sizeof(struct ark_user_ext));
362 			dlclose(ark->d_handle);
363 		}
364 	}
365 
366 	if (pci_dev->device.devargs)
367 		ret = eth_ark_check_args(ark, pci_dev->device.devargs->args);
368 	else
369 		PMD_DRV_LOG(INFO, "No Device args found\n");
370 
371 	if (ret)
372 		goto error;
373 	/*
374 	 * We will create additional devices based on the number of requested
375 	 * ports
376 	 */
377 	if (ark->user_ext.dev_get_port_count)
378 		port_count =
379 			ark->user_ext.dev_get_port_count(dev,
380 				 ark->user_data[dev->data->port_id]);
381 	ark->num_ports = port_count;
382 
383 	for (p = 0; p < port_count; p++) {
384 		struct rte_eth_dev *eth_dev;
385 		char name[RTE_ETH_NAME_MAX_LEN];
386 
387 		snprintf(name, sizeof(name), "arketh%d",
388 			 dev->data->port_id + p);
389 
390 		if (p == 0) {
391 			/* First port is already allocated by DPDK */
392 			eth_dev = ark->eth_dev;
393 			continue;
394 		}
395 
396 		/* reserve an ethdev entry */
397 		eth_dev = rte_eth_dev_allocate(name);
398 		if (!eth_dev) {
399 			PMD_DRV_LOG(ERR,
400 				    "Could not allocate eth_dev for port %d\n",
401 				    p);
402 			goto error;
403 		}
404 
405 		eth_dev->device = &pci_dev->device;
406 		eth_dev->data->dev_private = ark;
407 		eth_dev->dev_ops = ark->eth_dev->dev_ops;
408 		eth_dev->tx_pkt_burst = ark->eth_dev->tx_pkt_burst;
409 		eth_dev->rx_pkt_burst = ark->eth_dev->rx_pkt_burst;
410 
411 		rte_eth_copy_pci_info(eth_dev, pci_dev);
412 
413 		eth_dev->data->mac_addrs = rte_zmalloc(name, ETHER_ADDR_LEN, 0);
414 		if (!eth_dev->data->mac_addrs) {
415 			PMD_DRV_LOG(ERR,
416 				    "Memory allocation for MAC failed!"
417 				    " Exiting.\n");
418 			goto error;
419 		}
420 
421 		if (ark->user_ext.dev_init) {
422 			ark->user_data[eth_dev->data->port_id] =
423 				ark->user_ext.dev_init(dev, ark->a_bar, p);
424 		}
425 	}
426 
427 	return ret;
428 
429  error:
430 	if (dev->data->mac_addrs)
431 		rte_free(dev->data->mac_addrs);
432 	return -1;
433 }
434 
435 /*
436  *Initial device configuration when device is opened
437  * setup the DDM, and UDM
438  * Called once per PCIE device
439  */
440 static int
441 ark_config_device(struct rte_eth_dev *dev)
442 {
443 	struct ark_adapter *ark =
444 		(struct ark_adapter *)dev->data->dev_private;
445 	uint16_t num_q, i;
446 	struct ark_mpu_t *mpu;
447 
448 	/*
449 	 * Make sure that the packet director, generator and checker are in a
450 	 * known state
451 	 */
452 	ark->start_pg = 0;
453 	ark->pg = ark_pktgen_init(ark->pktgen.v, 0, 1);
454 	if (ark->pg == NULL)
455 		return -1;
456 	ark_pktgen_reset(ark->pg);
457 	ark->pc = ark_pktchkr_init(ark->pktchkr.v, 0, 1);
458 	if (ark->pc == NULL)
459 		return -1;
460 	ark_pktchkr_stop(ark->pc);
461 	ark->pd = ark_pktdir_init(ark->pktdir.v);
462 	if (ark->pd == NULL)
463 		return -1;
464 
465 	/* Verify HW */
466 	if (ark_udm_verify(ark->udm.v))
467 		return -1;
468 	if (ark_ddm_verify(ark->ddm.v))
469 		return -1;
470 
471 	/* UDM */
472 	if (ark_udm_reset(ark->udm.v)) {
473 		PMD_DRV_LOG(ERR, "Unable to stop and reset UDM\n");
474 		return -1;
475 	}
476 	/* Keep in reset until the MPU are cleared */
477 
478 	/* MPU reset */
479 	mpu = ark->mpurx.v;
480 	num_q = ark_api_num_queues(mpu);
481 	ark->rx_queues = num_q;
482 	for (i = 0; i < num_q; i++) {
483 		ark_mpu_reset(mpu);
484 		mpu = RTE_PTR_ADD(mpu, ARK_MPU_QOFFSET);
485 	}
486 
487 	ark_udm_stop(ark->udm.v, 0);
488 	ark_udm_configure(ark->udm.v,
489 			  RTE_PKTMBUF_HEADROOM,
490 			  RTE_MBUF_DEFAULT_DATAROOM,
491 			  ARK_RX_WRITE_TIME_NS);
492 	ark_udm_stats_reset(ark->udm.v);
493 	ark_udm_stop(ark->udm.v, 0);
494 
495 	/* TX -- DDM */
496 	if (ark_ddm_stop(ark->ddm.v, 1))
497 		PMD_DRV_LOG(ERR, "Unable to stop DDM\n");
498 
499 	mpu = ark->mputx.v;
500 	num_q = ark_api_num_queues(mpu);
501 	ark->tx_queues = num_q;
502 	for (i = 0; i < num_q; i++) {
503 		ark_mpu_reset(mpu);
504 		mpu = RTE_PTR_ADD(mpu, ARK_MPU_QOFFSET);
505 	}
506 
507 	ark_ddm_reset(ark->ddm.v);
508 	ark_ddm_stats_reset(ark->ddm.v);
509 
510 	ark_ddm_stop(ark->ddm.v, 0);
511 	ark_rqp_stats_reset(ark->rqpacing);
512 
513 	return 0;
514 }
515 
516 static int
517 eth_ark_dev_uninit(struct rte_eth_dev *dev)
518 {
519 	struct ark_adapter *ark =
520 		(struct ark_adapter *)dev->data->dev_private;
521 
522 	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
523 		return 0;
524 
525 	if (ark->user_ext.dev_uninit)
526 		ark->user_ext.dev_uninit(dev,
527 			 ark->user_data[dev->data->port_id]);
528 
529 	ark_pktgen_uninit(ark->pg);
530 	ark_pktchkr_uninit(ark->pc);
531 
532 	dev->dev_ops = NULL;
533 	dev->rx_pkt_burst = NULL;
534 	dev->tx_pkt_burst = NULL;
535 	rte_free(dev->data->mac_addrs);
536 	return 0;
537 }
538 
539 static int
540 eth_ark_dev_configure(struct rte_eth_dev *dev)
541 {
542 	PMD_FUNC_LOG(DEBUG, "\n");
543 	struct ark_adapter *ark =
544 		(struct ark_adapter *)dev->data->dev_private;
545 
546 	eth_ark_dev_set_link_up(dev);
547 	if (ark->user_ext.dev_configure)
548 		return ark->user_ext.dev_configure(dev,
549 			   ark->user_data[dev->data->port_id]);
550 	return 0;
551 }
552 
553 static void *
554 delay_pg_start(void *arg)
555 {
556 	struct ark_adapter *ark = (struct ark_adapter *)arg;
557 
558 	/* This function is used exclusively for regression testing, We
559 	 * perform a blind sleep here to ensure that the external test
560 	 * application has time to setup the test before we generate packets
561 	 */
562 	usleep(100000);
563 	ark_pktgen_run(ark->pg);
564 	return NULL;
565 }
566 
567 static int
568 eth_ark_dev_start(struct rte_eth_dev *dev)
569 {
570 	struct ark_adapter *ark =
571 		(struct ark_adapter *)dev->data->dev_private;
572 	int i;
573 
574 	PMD_FUNC_LOG(DEBUG, "\n");
575 
576 	/* RX Side */
577 	/* start UDM */
578 	ark_udm_start(ark->udm.v);
579 
580 	for (i = 0; i < dev->data->nb_rx_queues; i++)
581 		eth_ark_rx_start_queue(dev, i);
582 
583 	/* TX Side */
584 	for (i = 0; i < dev->data->nb_tx_queues; i++)
585 		eth_ark_tx_queue_start(dev, i);
586 
587 	/* start DDM */
588 	ark_ddm_start(ark->ddm.v);
589 
590 	ark->started = 1;
591 	/* set xmit and receive function */
592 	dev->rx_pkt_burst = &eth_ark_recv_pkts;
593 	dev->tx_pkt_burst = &eth_ark_xmit_pkts;
594 
595 	if (ark->start_pg)
596 		ark_pktchkr_run(ark->pc);
597 
598 	if (ark->start_pg && (dev->data->port_id == 0)) {
599 		pthread_t thread;
600 
601 		/* Delay packet generatpr start allow the hardware to be ready
602 		 * This is only used for sanity checking with internal generator
603 		 */
604 		if (pthread_create(&thread, NULL, delay_pg_start, ark)) {
605 			PMD_DRV_LOG(ERR, "Could not create pktgen "
606 				    "starter thread\n");
607 			return -1;
608 		}
609 	}
610 
611 	if (ark->user_ext.dev_start)
612 		ark->user_ext.dev_start(dev,
613 			ark->user_data[dev->data->port_id]);
614 
615 	return 0;
616 }
617 
618 static void
619 eth_ark_dev_stop(struct rte_eth_dev *dev)
620 {
621 	uint16_t i;
622 	int status;
623 	struct ark_adapter *ark =
624 		(struct ark_adapter *)dev->data->dev_private;
625 	struct ark_mpu_t *mpu;
626 
627 	PMD_FUNC_LOG(DEBUG, "\n");
628 
629 	if (ark->started == 0)
630 		return;
631 	ark->started = 0;
632 
633 	/* Stop the extension first */
634 	if (ark->user_ext.dev_stop)
635 		ark->user_ext.dev_stop(dev,
636 		       ark->user_data[dev->data->port_id]);
637 
638 	/* Stop the packet generator */
639 	if (ark->start_pg)
640 		ark_pktgen_pause(ark->pg);
641 
642 	dev->rx_pkt_burst = &eth_ark_recv_pkts_noop;
643 	dev->tx_pkt_burst = &eth_ark_xmit_pkts_noop;
644 
645 	/* STOP TX Side */
646 	for (i = 0; i < dev->data->nb_tx_queues; i++) {
647 		status = eth_ark_tx_queue_stop(dev, i);
648 		if (status != 0) {
649 			uint8_t port = dev->data->port_id;
650 			PMD_DRV_LOG(ERR,
651 				    "tx_queue stop anomaly"
652 				    " port %u, queue %u\n",
653 				    port, i);
654 		}
655 	}
656 
657 	/* Stop DDM */
658 	/* Wait up to 0.1 second.  each stop is up to 1000 * 10 useconds */
659 	for (i = 0; i < 10; i++) {
660 		status = ark_ddm_stop(ark->ddm.v, 1);
661 		if (status == 0)
662 			break;
663 	}
664 	if (status || i != 0) {
665 		PMD_DRV_LOG(ERR, "DDM stop anomaly. status:"
666 			    " %d iter: %u. (%s)\n",
667 			    status,
668 			    i,
669 			    __func__);
670 		ark_ddm_dump(ark->ddm.v, "Stop anomaly");
671 
672 		mpu = ark->mputx.v;
673 		for (i = 0; i < ark->tx_queues; i++) {
674 			ark_mpu_dump(mpu, "DDM failure dump", i);
675 			mpu = RTE_PTR_ADD(mpu, ARK_MPU_QOFFSET);
676 		}
677 	}
678 
679 	/* STOP RX Side */
680 	/* Stop UDM  multiple tries attempted */
681 	for (i = 0; i < 10; i++) {
682 		status = ark_udm_stop(ark->udm.v, 1);
683 		if (status == 0)
684 			break;
685 	}
686 	if (status || i != 0) {
687 		PMD_DRV_LOG(ERR, "UDM stop anomaly. status %d iter: %u. (%s)\n",
688 			    status, i, __func__);
689 		ark_udm_dump(ark->udm.v, "Stop anomaly");
690 
691 		mpu = ark->mpurx.v;
692 		for (i = 0; i < ark->rx_queues; i++) {
693 			ark_mpu_dump(mpu, "UDM Stop anomaly", i);
694 			mpu = RTE_PTR_ADD(mpu, ARK_MPU_QOFFSET);
695 		}
696 	}
697 
698 	ark_udm_dump_stats(ark->udm.v, "Post stop");
699 	ark_udm_dump_perf(ark->udm.v, "Post stop");
700 
701 	for (i = 0; i < dev->data->nb_tx_queues; i++)
702 		eth_ark_rx_dump_queue(dev, i, __func__);
703 
704 	/* Stop the packet checker if it is running */
705 	if (ark->start_pg) {
706 		ark_pktchkr_dump_stats(ark->pc);
707 		ark_pktchkr_stop(ark->pc);
708 	}
709 }
710 
711 static void
712 eth_ark_dev_close(struct rte_eth_dev *dev)
713 {
714 	struct ark_adapter *ark =
715 		(struct ark_adapter *)dev->data->dev_private;
716 	uint16_t i;
717 
718 	if (ark->user_ext.dev_close)
719 		ark->user_ext.dev_close(dev,
720 		 ark->user_data[dev->data->port_id]);
721 
722 	eth_ark_dev_stop(dev);
723 	eth_ark_udm_force_close(dev);
724 
725 	/*
726 	 * TODO This should only be called once for the device during shutdown
727 	 */
728 	ark_rqp_dump(ark->rqpacing);
729 
730 	for (i = 0; i < dev->data->nb_tx_queues; i++) {
731 		eth_ark_tx_queue_release(dev->data->tx_queues[i]);
732 		dev->data->tx_queues[i] = 0;
733 	}
734 
735 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
736 		eth_ark_dev_rx_queue_release(dev->data->rx_queues[i]);
737 		dev->data->rx_queues[i] = 0;
738 	}
739 }
740 
741 static void
742 eth_ark_dev_info_get(struct rte_eth_dev *dev,
743 		     struct rte_eth_dev_info *dev_info)
744 {
745 	struct ark_adapter *ark =
746 		(struct ark_adapter *)dev->data->dev_private;
747 	struct ark_mpu_t *tx_mpu = RTE_PTR_ADD(ark->bar0, ARK_MPU_TX_BASE);
748 	struct ark_mpu_t *rx_mpu = RTE_PTR_ADD(ark->bar0, ARK_MPU_RX_BASE);
749 	uint16_t ports = ark->num_ports;
750 
751 	dev_info->max_rx_pktlen = ARK_RX_MAX_PKT_LEN;
752 	dev_info->min_rx_bufsize = ARK_RX_MIN_BUFSIZE;
753 
754 	dev_info->max_rx_queues = ark_api_num_queues_per_port(rx_mpu, ports);
755 	dev_info->max_tx_queues = ark_api_num_queues_per_port(tx_mpu, ports);
756 
757 	dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
758 		.nb_max = ARK_RX_MAX_QUEUE,
759 		.nb_min = ARK_RX_MIN_QUEUE,
760 		.nb_align = ARK_RX_MIN_QUEUE}; /* power of 2 */
761 
762 	dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
763 		.nb_max = ARK_TX_MAX_QUEUE,
764 		.nb_min = ARK_TX_MIN_QUEUE,
765 		.nb_align = ARK_TX_MIN_QUEUE}; /* power of 2 */
766 
767 	/* ARK PMD supports all line rates, how do we indicate that here ?? */
768 	dev_info->speed_capa = (ETH_LINK_SPEED_1G |
769 				ETH_LINK_SPEED_10G |
770 				ETH_LINK_SPEED_25G |
771 				ETH_LINK_SPEED_40G |
772 				ETH_LINK_SPEED_50G |
773 				ETH_LINK_SPEED_100G);
774 	dev_info->pci_dev = RTE_ETH_DEV_TO_PCI(dev);
775 }
776 
777 static int
778 eth_ark_dev_link_update(struct rte_eth_dev *dev, int wait_to_complete)
779 {
780 	PMD_DEBUG_LOG(DEBUG, "link status = %d\n",
781 			dev->data->dev_link.link_status);
782 	struct ark_adapter *ark =
783 		(struct ark_adapter *)dev->data->dev_private;
784 
785 	if (ark->user_ext.link_update) {
786 		return ark->user_ext.link_update
787 			(dev, wait_to_complete,
788 			 ark->user_data[dev->data->port_id]);
789 	}
790 	return 0;
791 }
792 
793 static int
794 eth_ark_dev_set_link_up(struct rte_eth_dev *dev)
795 {
796 	dev->data->dev_link.link_status = 1;
797 	struct ark_adapter *ark =
798 		(struct ark_adapter *)dev->data->dev_private;
799 
800 	if (ark->user_ext.dev_set_link_up)
801 		return ark->user_ext.dev_set_link_up(dev,
802 			     ark->user_data[dev->data->port_id]);
803 	return 0;
804 }
805 
806 static int
807 eth_ark_dev_set_link_down(struct rte_eth_dev *dev)
808 {
809 	dev->data->dev_link.link_status = 0;
810 	struct ark_adapter *ark =
811 		(struct ark_adapter *)dev->data->dev_private;
812 
813 	if (ark->user_ext.dev_set_link_down)
814 		return ark->user_ext.dev_set_link_down(dev,
815 		       ark->user_data[dev->data->port_id]);
816 	return 0;
817 }
818 
819 static void
820 eth_ark_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
821 {
822 	uint16_t i;
823 	struct ark_adapter *ark =
824 		(struct ark_adapter *)dev->data->dev_private;
825 
826 	stats->ipackets = 0;
827 	stats->ibytes = 0;
828 	stats->opackets = 0;
829 	stats->obytes = 0;
830 	stats->imissed = 0;
831 	stats->oerrors = 0;
832 
833 	for (i = 0; i < dev->data->nb_tx_queues; i++)
834 		eth_tx_queue_stats_get(dev->data->tx_queues[i], stats);
835 	for (i = 0; i < dev->data->nb_rx_queues; i++)
836 		eth_rx_queue_stats_get(dev->data->rx_queues[i], stats);
837 	if (ark->user_ext.stats_get)
838 		ark->user_ext.stats_get(dev, stats,
839 			ark->user_data[dev->data->port_id]);
840 }
841 
842 static void
843 eth_ark_dev_stats_reset(struct rte_eth_dev *dev)
844 {
845 	uint16_t i;
846 	struct ark_adapter *ark =
847 		(struct ark_adapter *)dev->data->dev_private;
848 
849 	for (i = 0; i < dev->data->nb_tx_queues; i++)
850 		eth_tx_queue_stats_reset(dev->data->tx_queues[i]);
851 	for (i = 0; i < dev->data->nb_rx_queues; i++)
852 		eth_rx_queue_stats_reset(dev->data->rx_queues[i]);
853 	if (ark->user_ext.stats_reset)
854 		ark->user_ext.stats_reset(dev,
855 			  ark->user_data[dev->data->port_id]);
856 }
857 
858 static int
859 eth_ark_macaddr_add(struct rte_eth_dev *dev,
860 		    struct ether_addr *mac_addr,
861 		    uint32_t index,
862 		    uint32_t pool)
863 {
864 	struct ark_adapter *ark =
865 		(struct ark_adapter *)dev->data->dev_private;
866 
867 	if (ark->user_ext.mac_addr_add) {
868 		ark->user_ext.mac_addr_add(dev,
869 					   mac_addr,
870 					   index,
871 					   pool,
872 			   ark->user_data[dev->data->port_id]);
873 		return 0;
874 	}
875 	return -ENOTSUP;
876 }
877 
878 static void
879 eth_ark_macaddr_remove(struct rte_eth_dev *dev, uint32_t index)
880 {
881 	struct ark_adapter *ark =
882 		(struct ark_adapter *)dev->data->dev_private;
883 
884 	if (ark->user_ext.mac_addr_remove)
885 		ark->user_ext.mac_addr_remove(dev, index,
886 			      ark->user_data[dev->data->port_id]);
887 }
888 
889 static void
890 eth_ark_set_default_mac_addr(struct rte_eth_dev *dev,
891 			     struct ether_addr *mac_addr)
892 {
893 	struct ark_adapter *ark =
894 		(struct ark_adapter *)dev->data->dev_private;
895 
896 	if (ark->user_ext.mac_addr_set)
897 		ark->user_ext.mac_addr_set(dev, mac_addr,
898 			   ark->user_data[dev->data->port_id]);
899 }
900 
901 static int
902 eth_ark_set_mtu(struct rte_eth_dev *dev, uint16_t  size)
903 {
904 	struct ark_adapter *ark =
905 		(struct ark_adapter *)dev->data->dev_private;
906 
907 	if (ark->user_ext.set_mtu)
908 		return ark->user_ext.set_mtu(dev, size,
909 			     ark->user_data[dev->data->port_id]);
910 
911 	return -ENOTSUP;
912 }
913 
914 static inline int
915 process_pktdir_arg(const char *key, const char *value,
916 		   void *extra_args)
917 {
918 	PMD_FUNC_LOG(DEBUG, "key = %s, value = %s\n",
919 		    key, value);
920 	struct ark_adapter *ark =
921 		(struct ark_adapter *)extra_args;
922 
923 	ark->pkt_dir_v = strtol(value, NULL, 16);
924 	PMD_FUNC_LOG(DEBUG, "pkt_dir_v = 0x%x\n", ark->pkt_dir_v);
925 	return 0;
926 }
927 
928 static inline int
929 process_file_args(const char *key, const char *value, void *extra_args)
930 {
931 	PMD_FUNC_LOG(DEBUG, "key = %s, value = %s\n",
932 		    key, value);
933 	char *args = (char *)extra_args;
934 
935 	/* Open the configuration file */
936 	FILE *file = fopen(value, "r");
937 	char line[ARK_MAX_ARG_LEN];
938 	int  size = 0;
939 	int first = 1;
940 
941 	if (file == NULL) {
942 		PMD_DRV_LOG(ERR, "Unable to open "
943 			    "config file %s\n", value);
944 		return -1;
945 	}
946 
947 	while (fgets(line, sizeof(line), file)) {
948 		size += strlen(line);
949 		if (size >= ARK_MAX_ARG_LEN) {
950 			PMD_DRV_LOG(ERR, "Unable to parse file %s args, "
951 				    "parameter list is too long\n", value);
952 			fclose(file);
953 			return -1;
954 		}
955 		if (first) {
956 			strncpy(args, line, ARK_MAX_ARG_LEN);
957 			first = 0;
958 		} else {
959 			strncat(args, line, ARK_MAX_ARG_LEN);
960 		}
961 	}
962 	PMD_FUNC_LOG(DEBUG, "file = %s\n", args);
963 	fclose(file);
964 	return 0;
965 }
966 
967 static int
968 eth_ark_check_args(struct ark_adapter *ark, const char *params)
969 {
970 	struct rte_kvargs *kvlist;
971 	unsigned int k_idx;
972 	struct rte_kvargs_pair *pair = NULL;
973 	int ret = -1;
974 
975 	kvlist = rte_kvargs_parse(params, valid_arguments);
976 	if (kvlist == NULL)
977 		return 0;
978 
979 	ark->pkt_gen_args[0] = 0;
980 	ark->pkt_chkr_args[0] = 0;
981 
982 	for (k_idx = 0; k_idx < kvlist->count; k_idx++) {
983 		pair = &kvlist->pairs[k_idx];
984 		PMD_FUNC_LOG(DEBUG, "**** Arg passed to PMD = %s:%s\n",
985 			     pair->key,
986 			     pair->value);
987 	}
988 
989 	if (rte_kvargs_process(kvlist,
990 			       ARK_PKTDIR_ARG,
991 			       &process_pktdir_arg,
992 			       ark) != 0) {
993 		PMD_DRV_LOG(ERR, "Unable to parse arg %s\n", ARK_PKTDIR_ARG);
994 		goto free_kvlist;
995 	}
996 
997 	if (rte_kvargs_process(kvlist,
998 			       ARK_PKTGEN_ARG,
999 			       &process_file_args,
1000 			       ark->pkt_gen_args) != 0) {
1001 		PMD_DRV_LOG(ERR, "Unable to parse arg %s\n", ARK_PKTGEN_ARG);
1002 		goto free_kvlist;
1003 	}
1004 
1005 	if (rte_kvargs_process(kvlist,
1006 			       ARK_PKTCHKR_ARG,
1007 			       &process_file_args,
1008 			       ark->pkt_chkr_args) != 0) {
1009 		PMD_DRV_LOG(ERR, "Unable to parse arg %s\n", ARK_PKTCHKR_ARG);
1010 		goto free_kvlist;
1011 	}
1012 
1013 	PMD_DRV_LOG(INFO, "packet director set to 0x%x\n", ark->pkt_dir_v);
1014 	/* Setup the packet director */
1015 	ark_pktdir_setup(ark->pd, ark->pkt_dir_v);
1016 
1017 	/* Setup the packet generator */
1018 	if (ark->pkt_gen_args[0]) {
1019 		PMD_DRV_LOG(INFO, "Setting up the packet generator\n");
1020 		ark_pktgen_parse(ark->pkt_gen_args);
1021 		ark_pktgen_reset(ark->pg);
1022 		ark_pktgen_setup(ark->pg);
1023 		ark->start_pg = 1;
1024 	}
1025 
1026 	/* Setup the packet checker */
1027 	if (ark->pkt_chkr_args[0]) {
1028 		ark_pktchkr_parse(ark->pkt_chkr_args);
1029 		ark_pktchkr_setup(ark->pc);
1030 	}
1031 
1032 	ret = 0;
1033 
1034 free_kvlist:
1035 	rte_kvargs_free(kvlist);
1036 
1037 	return ret;
1038 }
1039 
1040 RTE_PMD_REGISTER_PCI(net_ark, rte_ark_pmd);
1041 RTE_PMD_REGISTER_KMOD_DEP(net_ark, "* igb_uio | uio_pci_generic ");
1042 RTE_PMD_REGISTER_PCI_TABLE(net_ark, pci_id_ark_map);
1043 RTE_PMD_REGISTER_PARAM_STRING(net_ark,
1044 			      ARK_PKTGEN_ARG "=<filename> "
1045 			      ARK_PKTCHKR_ARG "=<filename> "
1046 			      ARK_PKTDIR_ARG "=<bitmap>");
1047