net/enic: refactor Tx mbuf recycling
[dpdk.git] / drivers / net / vmxnet3 / vmxnet3_ethdev.c
1 /*-
2  *   BSD LICENSE
3  *
4  *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
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 Intel Corporation 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 <sys/queue.h>
35 #include <stdio.h>
36 #include <errno.h>
37 #include <stdint.h>
38 #include <string.h>
39 #include <unistd.h>
40 #include <stdarg.h>
41 #include <fcntl.h>
42 #include <inttypes.h>
43 #include <rte_byteorder.h>
44 #include <rte_common.h>
45 #include <rte_cycles.h>
46
47 #include <rte_interrupts.h>
48 #include <rte_log.h>
49 #include <rte_debug.h>
50 #include <rte_pci.h>
51 #include <rte_atomic.h>
52 #include <rte_branch_prediction.h>
53 #include <rte_memory.h>
54 #include <rte_memzone.h>
55 #include <rte_eal.h>
56 #include <rte_alarm.h>
57 #include <rte_ether.h>
58 #include <rte_ethdev.h>
59 #include <rte_atomic.h>
60 #include <rte_string_fns.h>
61 #include <rte_malloc.h>
62 #include <rte_dev.h>
63
64 #include "base/vmxnet3_defs.h"
65
66 #include "vmxnet3_ring.h"
67 #include "vmxnet3_logs.h"
68 #include "vmxnet3_ethdev.h"
69
70 #define PROCESS_SYS_EVENTS 0
71
72 static int eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev);
73 static int eth_vmxnet3_dev_uninit(struct rte_eth_dev *eth_dev);
74 static int vmxnet3_dev_configure(struct rte_eth_dev *dev);
75 static int vmxnet3_dev_start(struct rte_eth_dev *dev);
76 static void vmxnet3_dev_stop(struct rte_eth_dev *dev);
77 static void vmxnet3_dev_close(struct rte_eth_dev *dev);
78 static void vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set);
79 static void vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev);
80 static void vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev);
81 static void vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev);
82 static void vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev);
83 static int vmxnet3_dev_link_update(struct rte_eth_dev *dev,
84                                 int wait_to_complete);
85 static void vmxnet3_dev_stats_get(struct rte_eth_dev *dev,
86                                 struct rte_eth_stats *stats);
87 static void vmxnet3_dev_info_get(struct rte_eth_dev *dev,
88                                 struct rte_eth_dev_info *dev_info);
89 static const uint32_t *
90 vmxnet3_dev_supported_ptypes_get(struct rte_eth_dev *dev);
91 static int vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev,
92                                        uint16_t vid, int on);
93 static void vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
94 static void vmxnet3_mac_addr_set(struct rte_eth_dev *dev,
95                                  struct ether_addr *mac_addr);
96
97 #if PROCESS_SYS_EVENTS == 1
98 static void vmxnet3_process_events(struct vmxnet3_hw *);
99 #endif
100 /*
101  * The set of PCI devices this driver supports
102  */
103 static const struct rte_pci_id pci_id_vmxnet3_map[] = {
104
105 #define RTE_PCI_DEV_ID_DECL_VMXNET3(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
106 #include "rte_pci_dev_ids.h"
107
108 { .vendor_id = 0, /* sentinel */ },
109 };
110
111 static const struct eth_dev_ops vmxnet3_eth_dev_ops = {
112         .dev_configure        = vmxnet3_dev_configure,
113         .dev_start            = vmxnet3_dev_start,
114         .dev_stop             = vmxnet3_dev_stop,
115         .dev_close            = vmxnet3_dev_close,
116         .promiscuous_enable   = vmxnet3_dev_promiscuous_enable,
117         .promiscuous_disable  = vmxnet3_dev_promiscuous_disable,
118         .allmulticast_enable  = vmxnet3_dev_allmulticast_enable,
119         .allmulticast_disable = vmxnet3_dev_allmulticast_disable,
120         .link_update          = vmxnet3_dev_link_update,
121         .stats_get            = vmxnet3_dev_stats_get,
122         .mac_addr_set         = vmxnet3_mac_addr_set,
123         .dev_infos_get        = vmxnet3_dev_info_get,
124         .dev_supported_ptypes_get = vmxnet3_dev_supported_ptypes_get,
125         .vlan_filter_set      = vmxnet3_dev_vlan_filter_set,
126         .vlan_offload_set     = vmxnet3_dev_vlan_offload_set,
127         .rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
128         .rx_queue_release     = vmxnet3_dev_rx_queue_release,
129         .tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
130         .tx_queue_release     = vmxnet3_dev_tx_queue_release,
131 };
132
133 static const struct rte_memzone *
134 gpa_zone_reserve(struct rte_eth_dev *dev, uint32_t size,
135                 const char *post_string, int socket_id, uint16_t align)
136 {
137         char z_name[RTE_MEMZONE_NAMESIZE];
138         const struct rte_memzone *mz;
139
140         snprintf(z_name, sizeof(z_name), "%s_%d_%s",
141                                         dev->driver->pci_drv.name, dev->data->port_id, post_string);
142
143         mz = rte_memzone_lookup(z_name);
144         if (mz)
145                 return mz;
146
147         return rte_memzone_reserve_aligned(z_name, size,
148                         socket_id, 0, align);
149 }
150
151 /**
152  * Atomically reads the link status information from global
153  * structure rte_eth_dev.
154  *
155  * @param dev
156  *   - Pointer to the structure rte_eth_dev to read from.
157  *   - Pointer to the buffer to be saved with the link status.
158  *
159  * @return
160  *   - On success, zero.
161  *   - On failure, negative value.
162  */
163
164 static int
165 vmxnet3_dev_atomic_read_link_status(struct rte_eth_dev *dev,
166                                     struct rte_eth_link *link)
167 {
168         struct rte_eth_link *dst = link;
169         struct rte_eth_link *src = &(dev->data->dev_link);
170
171         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
172                                 *(uint64_t *)src) == 0)
173                 return -1;
174
175         return 0;
176 }
177
178 /**
179  * Atomically writes the link status information into global
180  * structure rte_eth_dev.
181  *
182  * @param dev
183  *   - Pointer to the structure rte_eth_dev to write to.
184  *   - Pointer to the buffer to be saved with the link status.
185  *
186  * @return
187  *   - On success, zero.
188  *   - On failure, negative value.
189  */
190 static int
191 vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
192                                      struct rte_eth_link *link)
193 {
194         struct rte_eth_link *dst = &(dev->data->dev_link);
195         struct rte_eth_link *src = link;
196
197         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
198                                         *(uint64_t *)src) == 0)
199                 return -1;
200
201         return 0;
202 }
203
204 /*
205  * This function is based on vmxnet3_disable_intr()
206  */
207 static void
208 vmxnet3_disable_intr(struct vmxnet3_hw *hw)
209 {
210         int i;
211
212         PMD_INIT_FUNC_TRACE();
213
214         hw->shared->devRead.intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
215         for (i = 0; i < VMXNET3_MAX_INTRS; i++)
216                         VMXNET3_WRITE_BAR0_REG(hw, VMXNET3_REG_IMR + i * 8, 1);
217 }
218
219 /*
220  * It returns 0 on success.
221  */
222 static int
223 eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
224 {
225         struct rte_pci_device *pci_dev;
226         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
227         uint32_t mac_hi, mac_lo, ver;
228
229         PMD_INIT_FUNC_TRACE();
230
231         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
232         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
233         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
234         pci_dev = eth_dev->pci_dev;
235
236         /*
237          * for secondary processes, we don't initialize any further as primary
238          * has already done this work.
239          */
240         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
241                 return 0;
242
243         rte_eth_copy_pci_info(eth_dev, pci_dev);
244
245         /* Vendor and Device ID need to be set before init of shared code */
246         hw->device_id = pci_dev->id.device_id;
247         hw->vendor_id = pci_dev->id.vendor_id;
248         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
249         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
250
251         hw->num_rx_queues = 1;
252         hw->num_tx_queues = 1;
253         hw->bufs_per_pkt = 1;
254
255         /* Check h/w version compatibility with driver. */
256         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
257         PMD_INIT_LOG(DEBUG, "Hardware version : %d", ver);
258         if (ver & 0x1)
259                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
260         else {
261                 PMD_INIT_LOG(ERR, "Incompatible h/w version, should be 0x1");
262                 return -EIO;
263         }
264
265         /* Check UPT version compatibility with driver. */
266         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
267         PMD_INIT_LOG(DEBUG, "UPT hardware version : %d", ver);
268         if (ver & 0x1)
269                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
270         else {
271                 PMD_INIT_LOG(ERR, "Incompatible UPT version.");
272                 return -EIO;
273         }
274
275         /* Getting MAC Address */
276         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
277         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
278         memcpy(hw->perm_addr  , &mac_lo, 4);
279         memcpy(hw->perm_addr+4, &mac_hi, 2);
280
281         /* Allocate memory for storing MAC addresses */
282         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
283                                                VMXNET3_MAX_MAC_ADDRS, 0);
284         if (eth_dev->data->mac_addrs == NULL) {
285                 PMD_INIT_LOG(ERR,
286                              "Failed to allocate %d bytes needed to store MAC addresses",
287                              ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
288                 return -ENOMEM;
289         }
290         /* Copy the permanent MAC address */
291         ether_addr_copy((struct ether_addr *) hw->perm_addr,
292                         &eth_dev->data->mac_addrs[0]);
293
294         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
295                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
296                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
297
298         /* Put device in Quiesce Mode */
299         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
300
301         /* allow untagged pkts */
302         VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, 0);
303
304         return 0;
305 }
306
307 static int
308 eth_vmxnet3_dev_uninit(struct rte_eth_dev *eth_dev)
309 {
310         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
311
312         PMD_INIT_FUNC_TRACE();
313
314         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
315                 return 0;
316
317         if (hw->adapter_stopped == 0)
318                 vmxnet3_dev_close(eth_dev);
319
320         eth_dev->dev_ops = NULL;
321         eth_dev->rx_pkt_burst = NULL;
322         eth_dev->tx_pkt_burst = NULL;
323
324         rte_free(eth_dev->data->mac_addrs);
325         eth_dev->data->mac_addrs = NULL;
326
327         return 0;
328 }
329
330 static struct eth_driver rte_vmxnet3_pmd = {
331         .pci_drv = {
332                 .name = "rte_vmxnet3_pmd",
333                 .id_table = pci_id_vmxnet3_map,
334                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_DETACHABLE,
335         },
336         .eth_dev_init = eth_vmxnet3_dev_init,
337         .eth_dev_uninit = eth_vmxnet3_dev_uninit,
338         .dev_private_size = sizeof(struct vmxnet3_hw),
339 };
340
341 /*
342  * Driver initialization routine.
343  * Invoked once at EAL init time.
344  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
345  */
346 static int
347 rte_vmxnet3_pmd_init(const char *name __rte_unused, const char *param __rte_unused)
348 {
349         PMD_INIT_FUNC_TRACE();
350
351         rte_eth_driver_register(&rte_vmxnet3_pmd);
352         return 0;
353 }
354
355 static int
356 vmxnet3_dev_configure(struct rte_eth_dev *dev)
357 {
358         const struct rte_memzone *mz;
359         struct vmxnet3_hw *hw = dev->data->dev_private;
360         size_t size;
361
362         PMD_INIT_FUNC_TRACE();
363
364         if (dev->data->nb_rx_queues > UINT8_MAX ||
365             dev->data->nb_tx_queues > UINT8_MAX)
366                 return -EINVAL;
367
368         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
369                 dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc);
370
371         if (size > UINT16_MAX)
372                 return -EINVAL;
373
374         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
375         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
376
377         /*
378          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
379          * on current socket
380          */
381         mz = gpa_zone_reserve(dev, sizeof(struct Vmxnet3_DriverShared),
382                               "shared", rte_socket_id(), 8);
383
384         if (mz == NULL) {
385                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone");
386                 return -ENOMEM;
387         }
388         memset(mz->addr, 0, mz->len);
389
390         hw->shared = mz->addr;
391         hw->sharedPA = mz->phys_addr;
392
393         /*
394          * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
395          * on current socket
396          */
397         mz = gpa_zone_reserve(dev, size, "queuedesc",
398                               rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
399         if (mz == NULL) {
400                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone");
401                 return -ENOMEM;
402         }
403         memset(mz->addr, 0, mz->len);
404
405         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
406         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
407
408         hw->queueDescPA = mz->phys_addr;
409         hw->queue_desc_len = (uint16_t)size;
410
411         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
412
413                 /* Allocate memory structure for UPT1_RSSConf and configure */
414                 mz = gpa_zone_reserve(dev, sizeof(struct VMXNET3_RSSConf), "rss_conf",
415                                       rte_socket_id(), RTE_CACHE_LINE_SIZE);
416                 if (mz == NULL) {
417                         PMD_INIT_LOG(ERR,
418                                      "ERROR: Creating rss_conf structure zone");
419                         return -ENOMEM;
420                 }
421                 memset(mz->addr, 0, mz->len);
422
423                 hw->rss_conf = mz->addr;
424                 hw->rss_confPA = mz->phys_addr;
425         }
426
427         return 0;
428 }
429
430 static void
431 vmxnet3_write_mac(struct vmxnet3_hw *hw, const uint8_t *addr)
432 {
433         uint32_t val;
434
435         PMD_INIT_LOG(DEBUG,
436                      "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
437                      addr[0], addr[1], addr[2],
438                      addr[3], addr[4], addr[5]);
439
440         val = *(const uint32_t *)addr;
441         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
442
443         val = (addr[5] << 8) | addr[4];
444         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
445 }
446
447 static int
448 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
449 {
450         struct rte_eth_conf port_conf = dev->data->dev_conf;
451         struct vmxnet3_hw *hw = dev->data->dev_private;
452         uint32_t mtu = dev->data->mtu;
453         Vmxnet3_DriverShared *shared = hw->shared;
454         Vmxnet3_DSDevRead *devRead = &shared->devRead;
455         uint32_t i;
456         int ret;
457
458         shared->magic = VMXNET3_REV1_MAGIC;
459         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
460
461         /* Setting up Guest OS information */
462         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
463                 VMXNET3_GOS_BITS_32 :
464                 VMXNET3_GOS_BITS_64;
465         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
466         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
467         devRead->misc.driverInfo.uptVerSpt     = 1;
468
469         devRead->misc.mtu = rte_le_to_cpu_32(mtu);
470         devRead->misc.queueDescPA  = hw->queueDescPA;
471         devRead->misc.queueDescLen = hw->queue_desc_len;
472         devRead->misc.numTxQueues  = hw->num_tx_queues;
473         devRead->misc.numRxQueues  = hw->num_rx_queues;
474
475         /*
476          * Set number of interrupts to 1
477          * PMD disables all the interrupts but this is MUST to activate device
478          * It needs at least one interrupt for link events to handle
479          * So we'll disable it later after device activation if needed
480          */
481         devRead->intrConf.numIntrs = 1;
482         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
483
484         for (i = 0; i < hw->num_tx_queues; i++) {
485                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
486                 vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
487
488                 tqd->ctrl.txNumDeferred  = 0;
489                 tqd->ctrl.txThreshold    = 1;
490                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
491                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
492                 tqd->conf.dataRingBasePA = txq->data_ring.basePA;
493
494                 tqd->conf.txRingSize   = txq->cmd_ring.size;
495                 tqd->conf.compRingSize = txq->comp_ring.size;
496                 tqd->conf.dataRingSize = txq->data_ring.size;
497                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
498                 tqd->status.stopped    = TRUE;
499                 tqd->status.error      = 0;
500                 memset(&tqd->stats, 0, sizeof(tqd->stats));
501         }
502
503         for (i = 0; i < hw->num_rx_queues; i++) {
504                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
505                 vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
506
507                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
508                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
509                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
510
511                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
512                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
513                 rqd->conf.compRingSize    = rxq->comp_ring.size;
514                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
515                 rqd->status.stopped       = TRUE;
516                 rqd->status.error         = 0;
517                 memset(&rqd->stats, 0, sizeof(rqd->stats));
518         }
519
520         /* RxMode set to 0 of VMXNET3_RXM_xxx */
521         devRead->rxFilterConf.rxMode = 0;
522
523         /* Setting up feature flags */
524         if (dev->data->dev_conf.rxmode.hw_ip_checksum)
525                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
526
527         if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
528                 ret = vmxnet3_rss_configure(dev);
529                 if (ret != VMXNET3_SUCCESS)
530                         return ret;
531
532                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
533                 devRead->rssConfDesc.confVer = 1;
534                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
535                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
536         }
537
538         vmxnet3_dev_vlan_offload_set(dev,
539                              ETH_VLAN_STRIP_MASK | ETH_VLAN_FILTER_MASK);
540
541         vmxnet3_write_mac(hw, hw->perm_addr);
542
543         return VMXNET3_SUCCESS;
544 }
545
546 /*
547  * Configure device link speed and setup link.
548  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
549  * It returns 0 on success.
550  */
551 static int
552 vmxnet3_dev_start(struct rte_eth_dev *dev)
553 {
554         int status, ret;
555         struct vmxnet3_hw *hw = dev->data->dev_private;
556
557         PMD_INIT_FUNC_TRACE();
558
559         ret = vmxnet3_setup_driver_shared(dev);
560         if (ret != VMXNET3_SUCCESS)
561                 return ret;
562
563         /* Exchange shared data with device */
564         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL,
565                                VMXNET3_GET_ADDR_LO(hw->sharedPA));
566         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH,
567                                VMXNET3_GET_ADDR_HI(hw->sharedPA));
568
569         /* Activate device by register write */
570         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
571         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
572
573         if (status != 0) {
574                 PMD_INIT_LOG(ERR, "Device activation: UNSUCCESSFUL");
575                 return -1;
576         }
577
578         /* Disable interrupts */
579         vmxnet3_disable_intr(hw);
580
581         /*
582          * Load RX queues with blank mbufs and update next2fill index for device
583          * Update RxMode of the device
584          */
585         ret = vmxnet3_dev_rxtx_init(dev);
586         if (ret != VMXNET3_SUCCESS) {
587                 PMD_INIT_LOG(ERR, "Device receive init: UNSUCCESSFUL");
588                 return ret;
589         }
590
591         /* Setting proper Rx Mode and issue Rx Mode Update command */
592         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_BCAST, 1);
593
594         /*
595          * Don't need to handle events for now
596          */
597 #if PROCESS_SYS_EVENTS == 1
598         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
599         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X", events);
600         vmxnet3_process_events(hw);
601 #endif
602         return status;
603 }
604
605 /*
606  * Stop device: disable rx and tx functions to allow for reconfiguring.
607  */
608 static void
609 vmxnet3_dev_stop(struct rte_eth_dev *dev)
610 {
611         struct rte_eth_link link;
612         struct vmxnet3_hw *hw = dev->data->dev_private;
613
614         PMD_INIT_FUNC_TRACE();
615
616         if (hw->adapter_stopped == 1) {
617                 PMD_INIT_LOG(DEBUG, "Device already closed.");
618                 return;
619         }
620
621         /* disable interrupts */
622         vmxnet3_disable_intr(hw);
623
624         /* quiesce the device first */
625         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
626         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
627         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
628
629         /* reset the device */
630         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
631         PMD_INIT_LOG(DEBUG, "Device reset.");
632         hw->adapter_stopped = 0;
633
634         vmxnet3_dev_clear_queues(dev);
635
636         /* Clear recorded link status */
637         memset(&link, 0, sizeof(link));
638         vmxnet3_dev_atomic_write_link_status(dev, &link);
639 }
640
641 /*
642  * Reset and stop device.
643  */
644 static void
645 vmxnet3_dev_close(struct rte_eth_dev *dev)
646 {
647         struct vmxnet3_hw *hw = dev->data->dev_private;
648
649         PMD_INIT_FUNC_TRACE();
650
651         vmxnet3_dev_stop(dev);
652         hw->adapter_stopped = 1;
653 }
654
655 static void
656 vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
657 {
658         unsigned int i;
659         struct vmxnet3_hw *hw = dev->data->dev_private;
660
661         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
662
663         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES);
664         for (i = 0; i < hw->num_tx_queues; i++) {
665                 struct UPT1_TxStats *txStats = &hw->tqd_start[i].stats;
666
667                 stats->q_opackets[i] = txStats->ucastPktsTxOK +
668                         txStats->mcastPktsTxOK +
669                         txStats->bcastPktsTxOK;
670                 stats->q_obytes[i] = txStats->ucastBytesTxOK +
671                         txStats->mcastBytesTxOK +
672                         txStats->bcastBytesTxOK;
673
674                 stats->opackets += stats->q_opackets[i];
675                 stats->obytes += stats->q_obytes[i];
676                 stats->oerrors += txStats->pktsTxError +
677                         txStats->pktsTxDiscard;
678         }
679
680         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES);
681         for (i = 0; i < hw->num_rx_queues; i++) {
682                 struct UPT1_RxStats *rxStats = &hw->rqd_start[i].stats;
683
684                 stats->q_ipackets[i] = rxStats->ucastPktsRxOK +
685                         rxStats->mcastPktsRxOK +
686                         rxStats->bcastPktsRxOK;
687
688                 stats->q_ibytes[i] = rxStats->ucastBytesRxOK +
689                         rxStats->mcastBytesRxOK +
690                         rxStats->bcastBytesRxOK;
691
692                 stats->ipackets += stats->q_ipackets[i];
693                 stats->ibytes += stats->q_ibytes[i];
694
695                 stats->q_errors[i] = rxStats->pktsRxError;
696                 stats->ierrors += rxStats->pktsRxError;
697                 stats->rx_nombuf += rxStats->pktsRxOutOfBuf;
698         }
699 }
700
701 static void
702 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev,
703                      struct rte_eth_dev_info *dev_info)
704 {
705         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
706         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
707         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
708         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
709         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
710
711         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOXSUMSCTP;
712         dev_info->flow_type_rss_offloads = VMXNET3_RSS_OFFLOAD_ALL;
713
714         dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
715                 .nb_max = VMXNET3_RX_RING_MAX_SIZE,
716                 .nb_min = VMXNET3_DEF_RX_RING_SIZE,
717                 .nb_align = 1,
718         };
719
720         dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
721                 .nb_max = VMXNET3_TX_RING_MAX_SIZE,
722                 .nb_min = VMXNET3_DEF_TX_RING_SIZE,
723                 .nb_align = 1,
724         };
725
726         dev_info->rx_offload_capa =
727                 DEV_RX_OFFLOAD_VLAN_STRIP |
728                 DEV_RX_OFFLOAD_UDP_CKSUM |
729                 DEV_RX_OFFLOAD_TCP_CKSUM;
730
731         dev_info->tx_offload_capa =
732                 DEV_TX_OFFLOAD_VLAN_INSERT |
733                 DEV_TX_OFFLOAD_TCP_CKSUM |
734                 DEV_TX_OFFLOAD_UDP_CKSUM |
735                 DEV_TX_OFFLOAD_TCP_TSO;
736 }
737
738 static const uint32_t *
739 vmxnet3_dev_supported_ptypes_get(struct rte_eth_dev *dev)
740 {
741         static const uint32_t ptypes[] = {
742                 RTE_PTYPE_L3_IPV4_EXT,
743                 RTE_PTYPE_L3_IPV4,
744                 RTE_PTYPE_UNKNOWN
745         };
746
747         if (dev->rx_pkt_burst == vmxnet3_recv_pkts)
748                 return ptypes;
749         return NULL;
750 }
751
752 static void
753 vmxnet3_mac_addr_set(struct rte_eth_dev *dev, struct ether_addr *mac_addr)
754 {
755         struct vmxnet3_hw *hw = dev->data->dev_private;
756
757         vmxnet3_write_mac(hw, mac_addr->addr_bytes);
758 }
759
760 /* return 0 means link status changed, -1 means not changed */
761 static int
762 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
763 {
764         struct vmxnet3_hw *hw = dev->data->dev_private;
765         struct rte_eth_link old, link;
766         uint32_t ret;
767
768         if (dev->data->dev_started == 0)
769                 return -1; /* Link status doesn't change for stopped dev */
770
771         memset(&link, 0, sizeof(link));
772         vmxnet3_dev_atomic_read_link_status(dev, &old);
773
774         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
775         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
776
777         if (ret & 0x1) {
778                 link.link_status = ETH_LINK_UP;
779                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
780                 link.link_speed = ETH_SPEED_NUM_10G;
781                 link.link_autoneg = ETH_LINK_SPEED_FIXED;
782         }
783
784         vmxnet3_dev_atomic_write_link_status(dev, &link);
785
786         return (old.link_status == link.link_status) ? -1 : 0;
787 }
788
789 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
790 static void
791 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
792
793         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
794
795         if (set)
796                 rxConf->rxMode = rxConf->rxMode | feature;
797         else
798                 rxConf->rxMode = rxConf->rxMode & (~feature);
799
800         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
801 }
802
803 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
804 static void
805 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
806 {
807         struct vmxnet3_hw *hw = dev->data->dev_private;
808         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
809
810         memset(vf_table, 0, VMXNET3_VFT_TABLE_SIZE);
811         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
812
813         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
814                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
815 }
816
817 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
818 static void
819 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
820 {
821         struct vmxnet3_hw *hw = dev->data->dev_private;
822         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
823
824         memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
825         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
826         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
827                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
828 }
829
830 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
831 static void
832 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
833 {
834         struct vmxnet3_hw *hw = dev->data->dev_private;
835
836         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 1);
837 }
838
839 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
840 static void
841 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
842 {
843         struct vmxnet3_hw *hw = dev->data->dev_private;
844
845         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
846 }
847
848 /* Enable/disable filter on vlan */
849 static int
850 vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vid, int on)
851 {
852         struct vmxnet3_hw *hw = dev->data->dev_private;
853         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
854         uint32_t *vf_table = rxConf->vfTable;
855
856         /* save state for restore */
857         if (on)
858                 VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, vid);
859         else
860                 VMXNET3_CLEAR_VFTABLE_ENTRY(hw->shadow_vfta, vid);
861
862         /* don't change active filter if in promiscuous mode */
863         if (rxConf->rxMode & VMXNET3_RXM_PROMISC)
864                 return 0;
865
866         /* set in hardware */
867         if (on)
868                 VMXNET3_SET_VFTABLE_ENTRY(vf_table, vid);
869         else
870                 VMXNET3_CLEAR_VFTABLE_ENTRY(vf_table, vid);
871
872         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
873                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
874         return 0;
875 }
876
877 static void
878 vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
879 {
880         struct vmxnet3_hw *hw = dev->data->dev_private;
881         Vmxnet3_DSDevRead *devRead = &hw->shared->devRead;
882         uint32_t *vf_table = devRead->rxFilterConf.vfTable;
883
884         if (mask & ETH_VLAN_STRIP_MASK) {
885                 if (dev->data->dev_conf.rxmode.hw_vlan_strip)
886                         devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
887                 else
888                         devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
889
890                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
891                                        VMXNET3_CMD_UPDATE_FEATURE);
892         }
893
894         if (mask & ETH_VLAN_FILTER_MASK) {
895                 if (dev->data->dev_conf.rxmode.hw_vlan_filter)
896                         memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
897                 else
898                         memset(vf_table, 0xff, VMXNET3_VFT_TABLE_SIZE);
899
900                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
901                                        VMXNET3_CMD_UPDATE_VLAN_FILTERS);
902         }
903 }
904
905 #if PROCESS_SYS_EVENTS == 1
906 static void
907 vmxnet3_process_events(struct vmxnet3_hw *hw)
908 {
909         uint32_t events = hw->shared->ecr;
910
911         if (!events) {
912                 PMD_INIT_LOG(ERR, "No events to process");
913                 return;
914         }
915
916         /*
917          * ECR bits when written with 1b are cleared. Hence write
918          * events back to ECR so that the bits which were set will be reset.
919          */
920         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
921
922         /* Check if link state has changed */
923         if (events & VMXNET3_ECR_LINK)
924                 PMD_INIT_LOG(ERR,
925                              "Process events in %s(): VMXNET3_ECR_LINK event", __func__);
926
927         /* Check if there is an error on xmit/recv queues */
928         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
929                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
930
931                 if (hw->tqd_start->status.stopped)
932                         PMD_INIT_LOG(ERR, "tq error 0x%x",
933                                      hw->tqd_start->status.error);
934
935                 if (hw->rqd_start->status.stopped)
936                         PMD_INIT_LOG(ERR, "rq error 0x%x",
937                                      hw->rqd_start->status.error);
938
939                 /* Reset the device */
940                 /* Have to reset the device */
941         }
942
943         if (events & VMXNET3_ECR_DIC)
944                 PMD_INIT_LOG(ERR, "Device implementation change event.");
945
946         if (events & VMXNET3_ECR_DEBUG)
947                 PMD_INIT_LOG(ERR, "Debug event generated by device.");
948
949 }
950 #endif
951
952 static struct rte_driver rte_vmxnet3_driver = {
953         .type = PMD_PDEV,
954         .init = rte_vmxnet3_pmd_init,
955 };
956
957 PMD_REGISTER_DRIVER(rte_vmxnet3_driver);