2 * Copyright (c) 2016 Solarflare Communications Inc.
5 * This software was jointly developed between OKTET Labs (under contract
6 * for Solarflare) and Solarflare Communications, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * 1. Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
19 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
21 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
22 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
23 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
24 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
27 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #include <rte_errno.h>
45 sfc_dma_alloc(const struct sfc_adapter *sa, const char *name, uint16_t id,
46 size_t len, int socket_id, efsys_mem_t *esmp)
48 const struct rte_memzone *mz;
50 sfc_log_init(sa, "name=%s id=%u len=%lu socket_id=%d",
51 name, id, len, socket_id);
53 mz = rte_eth_dma_zone_reserve(sa->eth_dev, name, id, len,
54 sysconf(_SC_PAGESIZE), socket_id);
56 sfc_err(sa, "cannot reserve DMA zone for %s:%u %#x@%d: %s",
57 name, (unsigned int)id, (unsigned int)len, socket_id,
58 rte_strerror(rte_errno));
62 esmp->esm_addr = rte_mem_phy2mch(mz->memseg_id, mz->phys_addr);
63 if (esmp->esm_addr == RTE_BAD_PHYS_ADDR) {
64 (void)rte_memzone_free(mz);
69 esmp->esm_base = mz->addr;
75 sfc_dma_free(const struct sfc_adapter *sa, efsys_mem_t *esmp)
79 sfc_log_init(sa, "name=%s", esmp->esm_mz->name);
81 rc = rte_memzone_free(esmp->esm_mz);
83 sfc_err(sa, "rte_memzone_free(() failed: %d", rc);
85 memset(esmp, 0, sizeof(*esmp));
89 * Check requested device level configuration.
90 * Receive and transmit configuration is checked in corresponding
94 sfc_check_conf(struct sfc_adapter *sa)
96 const struct rte_eth_conf *conf = &sa->eth_dev->data->dev_conf;
99 if (conf->link_speeds != ETH_LINK_SPEED_AUTONEG) {
100 sfc_err(sa, "Manual link speed/duplex choice not supported");
104 if (conf->lpbk_mode != 0) {
105 sfc_err(sa, "Loopback not supported");
109 if (conf->dcb_capability_en != 0) {
110 sfc_err(sa, "Priority-based flow control not supported");
114 if (conf->fdir_conf.mode != RTE_FDIR_MODE_NONE) {
115 sfc_err(sa, "Flow Director not supported");
119 if ((conf->intr_conf.lsc != 0) &&
120 (sa->intr.type != EFX_INTR_LINE) &&
121 (sa->intr.type != EFX_INTR_MESSAGE)) {
122 sfc_err(sa, "Link status change interrupt not supported");
126 if (conf->intr_conf.rxq != 0) {
127 sfc_err(sa, "Receive queue interrupt not supported");
135 * Find out maximum number of receive and transmit queues which could be
138 * NIC is kept initialized on success to allow other modules acquire
139 * defaults and capabilities.
142 sfc_estimate_resource_limits(struct sfc_adapter *sa)
144 const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
145 efx_drv_limits_t limits;
147 uint32_t evq_allocated;
148 uint32_t rxq_allocated;
149 uint32_t txq_allocated;
151 memset(&limits, 0, sizeof(limits));
153 /* Request at least one Rx and Tx queue */
154 limits.edl_min_rxq_count = 1;
155 limits.edl_min_txq_count = 1;
156 /* Management event queue plus event queue for each Tx and Rx queue */
157 limits.edl_min_evq_count =
158 1 + limits.edl_min_rxq_count + limits.edl_min_txq_count;
160 /* Divide by number of functions to guarantee that all functions
161 * will get promised resources
163 /* FIXME Divide by number of functions (not 2) below */
164 limits.edl_max_evq_count = encp->enc_evq_limit / 2;
165 SFC_ASSERT(limits.edl_max_evq_count >= limits.edl_min_rxq_count);
167 /* Split equally between receive and transmit */
168 limits.edl_max_rxq_count =
169 MIN(encp->enc_rxq_limit, (limits.edl_max_evq_count - 1) / 2);
170 SFC_ASSERT(limits.edl_max_rxq_count >= limits.edl_min_rxq_count);
172 limits.edl_max_txq_count =
173 MIN(encp->enc_txq_limit,
174 limits.edl_max_evq_count - 1 - limits.edl_max_rxq_count);
175 SFC_ASSERT(limits.edl_max_txq_count >= limits.edl_min_rxq_count);
177 /* Configure the minimum required resources needed for the
178 * driver to operate, and the maximum desired resources that the
179 * driver is capable of using.
181 efx_nic_set_drv_limits(sa->nic, &limits);
183 sfc_log_init(sa, "init nic");
184 rc = efx_nic_init(sa->nic);
188 /* Find resource dimensions assigned by firmware to this function */
189 rc = efx_nic_get_vi_pool(sa->nic, &evq_allocated, &rxq_allocated,
192 goto fail_get_vi_pool;
194 /* It still may allocate more than maximum, ensure limit */
195 evq_allocated = MIN(evq_allocated, limits.edl_max_evq_count);
196 rxq_allocated = MIN(rxq_allocated, limits.edl_max_rxq_count);
197 txq_allocated = MIN(txq_allocated, limits.edl_max_txq_count);
199 /* Subtract management EVQ not used for traffic */
200 SFC_ASSERT(evq_allocated > 0);
203 /* Right now we use separate EVQ for Rx and Tx */
204 sa->rxq_max = MIN(rxq_allocated, evq_allocated / 2);
205 sa->txq_max = MIN(txq_allocated, evq_allocated - sa->rxq_max);
207 /* Keep NIC initialized */
212 efx_nic_fini(sa->nic);
217 sfc_set_drv_limits(struct sfc_adapter *sa)
219 const struct rte_eth_dev_data *data = sa->eth_dev->data;
220 efx_drv_limits_t lim;
222 memset(&lim, 0, sizeof(lim));
224 /* Limits are strict since take into account initial estimation */
225 lim.edl_min_evq_count = lim.edl_max_evq_count =
226 1 + data->nb_rx_queues + data->nb_tx_queues;
227 lim.edl_min_rxq_count = lim.edl_max_rxq_count = data->nb_rx_queues;
228 lim.edl_min_txq_count = lim.edl_max_txq_count = data->nb_tx_queues;
230 return efx_nic_set_drv_limits(sa->nic, &lim);
234 sfc_start(struct sfc_adapter *sa)
238 sfc_log_init(sa, "entry");
240 SFC_ASSERT(sfc_adapter_is_locked(sa));
243 case SFC_ADAPTER_CONFIGURED:
245 case SFC_ADAPTER_STARTED:
246 sfc_info(sa, "already started");
253 sa->state = SFC_ADAPTER_STARTING;
255 sfc_log_init(sa, "set resource limits");
256 rc = sfc_set_drv_limits(sa);
258 goto fail_set_drv_limits;
260 sfc_log_init(sa, "init nic");
261 rc = efx_nic_init(sa->nic);
265 rc = sfc_intr_start(sa);
267 goto fail_intr_start;
269 rc = sfc_ev_start(sa);
273 rc = sfc_port_start(sa);
275 goto fail_port_start;
277 rc = sfc_rx_start(sa);
281 rc = sfc_tx_start(sa);
285 sa->state = SFC_ADAPTER_STARTED;
286 sfc_log_init(sa, "done");
302 efx_nic_fini(sa->nic);
306 sa->state = SFC_ADAPTER_CONFIGURED;
308 sfc_log_init(sa, "failed %d", rc);
313 sfc_stop(struct sfc_adapter *sa)
315 sfc_log_init(sa, "entry");
317 SFC_ASSERT(sfc_adapter_is_locked(sa));
320 case SFC_ADAPTER_STARTED:
322 case SFC_ADAPTER_CONFIGURED:
323 sfc_info(sa, "already stopped");
326 sfc_err(sa, "stop in unexpected state %u", sa->state);
331 sa->state = SFC_ADAPTER_STOPPING;
338 efx_nic_fini(sa->nic);
340 sa->state = SFC_ADAPTER_CONFIGURED;
341 sfc_log_init(sa, "done");
345 sfc_configure(struct sfc_adapter *sa)
349 sfc_log_init(sa, "entry");
351 SFC_ASSERT(sfc_adapter_is_locked(sa));
353 SFC_ASSERT(sa->state == SFC_ADAPTER_INITIALIZED);
354 sa->state = SFC_ADAPTER_CONFIGURING;
356 rc = sfc_check_conf(sa);
358 goto fail_check_conf;
360 rc = sfc_intr_init(sa);
364 rc = sfc_ev_init(sa);
368 rc = sfc_port_init(sa);
372 rc = sfc_rx_init(sa);
376 rc = sfc_tx_init(sa);
380 sa->state = SFC_ADAPTER_CONFIGURED;
381 sfc_log_init(sa, "done");
398 sa->state = SFC_ADAPTER_INITIALIZED;
399 sfc_log_init(sa, "failed %d", rc);
404 sfc_close(struct sfc_adapter *sa)
406 sfc_log_init(sa, "entry");
408 SFC_ASSERT(sfc_adapter_is_locked(sa));
410 SFC_ASSERT(sa->state == SFC_ADAPTER_CONFIGURED);
411 sa->state = SFC_ADAPTER_CLOSING;
419 sa->state = SFC_ADAPTER_INITIALIZED;
420 sfc_log_init(sa, "done");
424 sfc_mem_bar_init(struct sfc_adapter *sa)
426 struct rte_eth_dev *eth_dev = sa->eth_dev;
427 struct rte_pci_device *pci_dev = SFC_DEV_TO_PCI(eth_dev);
428 efsys_bar_t *ebp = &sa->mem_bar;
430 struct rte_mem_resource *res;
432 for (i = 0; i < RTE_DIM(pci_dev->mem_resource); i++) {
433 res = &pci_dev->mem_resource[i];
434 if ((res->len != 0) && (res->phys_addr != 0)) {
435 /* Found first memory BAR */
436 SFC_BAR_LOCK_INIT(ebp, eth_dev->data->name);
438 ebp->esb_dev = pci_dev;
439 ebp->esb_base = res->addr;
448 sfc_mem_bar_fini(struct sfc_adapter *sa)
450 efsys_bar_t *ebp = &sa->mem_bar;
452 SFC_BAR_LOCK_DESTROY(ebp);
453 memset(ebp, 0, sizeof(*ebp));
457 sfc_attach(struct sfc_adapter *sa)
459 struct rte_pci_device *pci_dev = SFC_DEV_TO_PCI(sa->eth_dev);
460 const efx_nic_cfg_t *encp;
464 sfc_log_init(sa, "entry");
466 SFC_ASSERT(sfc_adapter_is_locked(sa));
468 sa->socket_id = rte_socket_id();
470 sfc_log_init(sa, "init mem bar");
471 rc = sfc_mem_bar_init(sa);
473 goto fail_mem_bar_init;
475 sfc_log_init(sa, "get family");
476 rc = efx_family(pci_dev->id.vendor_id, pci_dev->id.device_id,
480 sfc_log_init(sa, "family is %u", sa->family);
482 sfc_log_init(sa, "create nic");
483 rte_spinlock_init(&sa->nic_lock);
484 rc = efx_nic_create(sa->family, (efsys_identifier_t *)sa,
485 &sa->mem_bar, &sa->nic_lock, &enp);
487 goto fail_nic_create;
490 rc = sfc_mcdi_init(sa);
494 sfc_log_init(sa, "probe nic");
495 rc = efx_nic_probe(enp);
499 efx_mcdi_new_epoch(enp);
501 sfc_log_init(sa, "reset nic");
502 rc = efx_nic_reset(enp);
506 sfc_log_init(sa, "estimate resource limits");
507 rc = sfc_estimate_resource_limits(sa);
509 goto fail_estimate_rsrc_limits;
511 encp = efx_nic_cfg_get(sa->nic);
512 sa->txq_max_entries = encp->enc_txq_max_ndescs;
513 SFC_ASSERT(rte_is_power_of_2(sa->txq_max_entries));
515 rc = sfc_intr_attach(sa);
517 goto fail_intr_attach;
519 sfc_log_init(sa, "fini nic");
522 sa->state = SFC_ADAPTER_INITIALIZED;
524 sfc_log_init(sa, "done");
528 fail_estimate_rsrc_limits:
530 sfc_log_init(sa, "unprobe nic");
531 efx_nic_unprobe(enp);
537 sfc_log_init(sa, "destroy nic");
539 efx_nic_destroy(enp);
543 sfc_mem_bar_fini(sa);
546 sfc_log_init(sa, "failed %d", rc);
551 sfc_detach(struct sfc_adapter *sa)
553 efx_nic_t *enp = sa->nic;
555 sfc_log_init(sa, "entry");
557 SFC_ASSERT(sfc_adapter_is_locked(sa));
561 sfc_log_init(sa, "unprobe nic");
562 efx_nic_unprobe(enp);
566 sfc_log_init(sa, "destroy nic");
568 efx_nic_destroy(enp);
570 sfc_mem_bar_fini(sa);
572 sa->state = SFC_ADAPTER_UNINITIALIZED;