vmxnet3: fix spelling
[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 vmxnet3_dev_configure(struct rte_eth_dev *dev);
74 static int vmxnet3_dev_start(struct rte_eth_dev *dev);
75 static void vmxnet3_dev_stop(struct rte_eth_dev *dev);
76 static void vmxnet3_dev_close(struct rte_eth_dev *dev);
77 static void vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set);
78 static void vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev);
79 static void vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev);
80 static void vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev);
81 static void vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev);
82 static int vmxnet3_dev_link_update(struct rte_eth_dev *dev,
83                                 int wait_to_complete);
84 static void vmxnet3_dev_stats_get(struct rte_eth_dev *dev,
85                                 struct rte_eth_stats *stats);
86 static void vmxnet3_dev_info_get(struct rte_eth_dev *dev,
87                                 struct rte_eth_dev_info *dev_info);
88 #if PROCESS_SYS_EVENTS == 1
89 static void vmxnet3_process_events(struct vmxnet3_hw *);
90 #endif
91 /*
92  * The set of PCI devices this driver supports
93  */
94 static const struct rte_pci_id pci_id_vmxnet3_map[] = {
95
96 #define RTE_PCI_DEV_ID_DECL_VMXNET3(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
97 #include "rte_pci_dev_ids.h"
98
99 { .vendor_id = 0, /* sentinel */ },
100 };
101
102 static const struct eth_dev_ops vmxnet3_eth_dev_ops = {
103         .dev_configure        = vmxnet3_dev_configure,
104         .dev_start            = vmxnet3_dev_start,
105         .dev_stop             = vmxnet3_dev_stop,
106         .dev_close            = vmxnet3_dev_close,
107         .promiscuous_enable   = vmxnet3_dev_promiscuous_enable,
108         .promiscuous_disable  = vmxnet3_dev_promiscuous_disable,
109         .allmulticast_enable  = vmxnet3_dev_allmulticast_enable,
110         .allmulticast_disable = vmxnet3_dev_allmulticast_disable,
111         .link_update          = vmxnet3_dev_link_update,
112         .stats_get            = vmxnet3_dev_stats_get,
113         .dev_infos_get        = vmxnet3_dev_info_get,
114         .rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
115         .rx_queue_release     = vmxnet3_dev_rx_queue_release,
116         .tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
117         .tx_queue_release     = vmxnet3_dev_tx_queue_release,
118 };
119
120 static const struct rte_memzone *
121 gpa_zone_reserve(struct rte_eth_dev *dev, uint32_t size,
122                 const char *post_string, int socket_id, uint16_t align)
123 {
124         char z_name[RTE_MEMZONE_NAMESIZE];
125         const struct rte_memzone *mz;
126
127         snprintf(z_name, sizeof(z_name), "%s_%d_%s",
128                                         dev->driver->pci_drv.name, dev->data->port_id, post_string);
129
130         mz = rte_memzone_lookup(z_name);
131         if (mz)
132                 return mz;
133
134         return rte_memzone_reserve_aligned(z_name, size,
135                         socket_id, 0, align);
136 }
137
138 /**
139  * Atomically reads the link status information from global
140  * structure rte_eth_dev.
141  *
142  * @param dev
143  *   - Pointer to the structure rte_eth_dev to read from.
144  *   - Pointer to the buffer to be saved with the link status.
145  *
146  * @return
147  *   - On success, zero.
148  *   - On failure, negative value.
149  */
150 static inline int
151 rte_vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
152                                 struct rte_eth_link *link)
153 {
154         struct rte_eth_link *dst = &(dev->data->dev_link);
155         struct rte_eth_link *src = link;
156
157         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
158                                         *(uint64_t *)src) == 0)
159                 return -1;
160
161         return 0;
162 }
163
164 /*
165  * This function is based on vmxnet3_disable_intr()
166  */
167 static void
168 vmxnet3_disable_intr(struct vmxnet3_hw *hw)
169 {
170         int i;
171
172         PMD_INIT_FUNC_TRACE();
173
174         hw->shared->devRead.intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
175         for (i = 0; i < VMXNET3_MAX_INTRS; i++)
176                         VMXNET3_WRITE_BAR0_REG(hw, VMXNET3_REG_IMR + i * 8, 1);
177 }
178
179 /*
180  * It returns 0 on success.
181  */
182 static int
183 eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
184 {
185         struct rte_pci_device *pci_dev;
186         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
187         uint32_t mac_hi, mac_lo, ver;
188
189         PMD_INIT_FUNC_TRACE();
190
191         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
192         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
193         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
194         pci_dev = eth_dev->pci_dev;
195
196         /*
197          * for secondary processes, we don't initialize any further as primary
198          * has already done this work.
199          */
200         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
201                 return 0;
202
203         /* Vendor and Device ID need to be set before init of shared code */
204         hw->device_id = pci_dev->id.device_id;
205         hw->vendor_id = pci_dev->id.vendor_id;
206         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
207         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
208
209         hw->num_rx_queues = 1;
210         hw->num_tx_queues = 1;
211         hw->cur_mtu = ETHER_MTU;
212         hw->bufs_per_pkt = 1;
213
214         /* Check h/w version compatibility with driver. */
215         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
216         PMD_INIT_LOG(DEBUG, "Hardware version : %d", ver);
217         if (ver & 0x1)
218                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
219         else {
220                 PMD_INIT_LOG(ERR, "Incompatible h/w version, should be 0x1");
221                 return -EIO;
222         }
223
224         /* Check UPT version compatibility with driver. */
225         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
226         PMD_INIT_LOG(DEBUG, "UPT hardware version : %d", ver);
227         if (ver & 0x1)
228                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
229         else {
230                 PMD_INIT_LOG(ERR, "Incompatible UPT version.");
231                 return -EIO;
232         }
233
234         /* Getting MAC Address */
235         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
236         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
237         memcpy(hw->perm_addr  , &mac_lo, 4);
238         memcpy(hw->perm_addr+4, &mac_hi, 2);
239
240         /* Allocate memory for storing MAC addresses */
241         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
242                                                VMXNET3_MAX_MAC_ADDRS, 0);
243         if (eth_dev->data->mac_addrs == NULL) {
244                 PMD_INIT_LOG(ERR,
245                              "Failed to allocate %d bytes needed to store MAC addresses",
246                              ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
247                 return -ENOMEM;
248         }
249         /* Copy the permanent MAC address */
250         ether_addr_copy((struct ether_addr *) hw->perm_addr,
251                         &eth_dev->data->mac_addrs[0]);
252
253         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
254                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
255                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
256
257         /* Put device in Quiesce Mode */
258         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
259
260         return 0;
261 }
262
263 static struct eth_driver rte_vmxnet3_pmd = {
264         {
265                 .name = "rte_vmxnet3_pmd",
266                 .id_table = pci_id_vmxnet3_map,
267                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING,
268         },
269         .eth_dev_init = eth_vmxnet3_dev_init,
270         .dev_private_size = sizeof(struct vmxnet3_hw),
271 };
272
273 /*
274  * Driver initialization routine.
275  * Invoked once at EAL init time.
276  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
277  */
278 static int
279 rte_vmxnet3_pmd_init(const char *name __rte_unused, const char *param __rte_unused)
280 {
281         PMD_INIT_FUNC_TRACE();
282
283         rte_eth_driver_register(&rte_vmxnet3_pmd);
284         return 0;
285 }
286
287 static int
288 vmxnet3_dev_configure(struct rte_eth_dev *dev)
289 {
290         const struct rte_memzone *mz;
291         struct vmxnet3_hw *hw = dev->data->dev_private;
292         size_t size;
293
294         PMD_INIT_FUNC_TRACE();
295
296         if (dev->data->nb_rx_queues > UINT8_MAX ||
297             dev->data->nb_tx_queues > UINT8_MAX)
298                 return -EINVAL;
299
300         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
301                 dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc);
302
303         if (size > UINT16_MAX)
304                 return -EINVAL;
305
306         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
307         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
308
309         /*
310          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
311          * on current socket
312          */
313         mz = gpa_zone_reserve(dev, sizeof(struct Vmxnet3_DriverShared),
314                               "shared", rte_socket_id(), 8);
315
316         if (mz == NULL) {
317                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone");
318                 return -ENOMEM;
319         }
320         memset(mz->addr, 0, mz->len);
321
322         hw->shared = mz->addr;
323         hw->sharedPA = mz->phys_addr;
324
325         /*
326          * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
327          * on current socket
328          */
329         mz = gpa_zone_reserve(dev, size, "queuedesc",
330                               rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
331         if (mz == NULL) {
332                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone");
333                 return -ENOMEM;
334         }
335         memset(mz->addr, 0, mz->len);
336
337         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
338         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
339
340         hw->queueDescPA = mz->phys_addr;
341         hw->queue_desc_len = (uint16_t)size;
342
343         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
344
345                 /* Allocate memory structure for UPT1_RSSConf and configure */
346                 mz = gpa_zone_reserve(dev, sizeof(struct VMXNET3_RSSConf), "rss_conf",
347                                       rte_socket_id(), RTE_CACHE_LINE_SIZE);
348                 if (mz == NULL) {
349                         PMD_INIT_LOG(ERR,
350                                      "ERROR: Creating rss_conf structure zone");
351                         return -ENOMEM;
352                 }
353                 memset(mz->addr, 0, mz->len);
354
355                 hw->rss_conf = mz->addr;
356                 hw->rss_confPA = mz->phys_addr;
357         }
358
359         return 0;
360 }
361
362 static int
363 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
364 {
365         struct rte_eth_conf port_conf = dev->data->dev_conf;
366         struct vmxnet3_hw *hw = dev->data->dev_private;
367         Vmxnet3_DriverShared *shared = hw->shared;
368         Vmxnet3_DSDevRead *devRead = &shared->devRead;
369         uint32_t *mac_ptr;
370         uint32_t val, i;
371         int ret;
372
373         shared->magic = VMXNET3_REV1_MAGIC;
374         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
375
376         /* Setting up Guest OS information */
377         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
378                 VMXNET3_GOS_BITS_32 :
379                 VMXNET3_GOS_BITS_64;
380         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
381         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
382         devRead->misc.driverInfo.uptVerSpt     = 1;
383
384         devRead->misc.queueDescPA  = hw->queueDescPA;
385         devRead->misc.queueDescLen = hw->queue_desc_len;
386         devRead->misc.mtu          = hw->cur_mtu;
387         devRead->misc.numTxQueues  = hw->num_tx_queues;
388         devRead->misc.numRxQueues  = hw->num_rx_queues;
389
390         /*
391          * Set number of interrupts to 1
392          * PMD disables all the interrupts but this is MUST to activate device
393          * It needs at least one interrupt for link events to handle
394          * So we'll disable it later after device activation if needed
395          */
396         devRead->intrConf.numIntrs = 1;
397         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
398
399         for (i = 0; i < hw->num_tx_queues; i++) {
400                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
401                 vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
402
403                 tqd->ctrl.txNumDeferred  = 0;
404                 tqd->ctrl.txThreshold    = 1;
405                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
406                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
407                 tqd->conf.dataRingBasePA = txq->data_ring.basePA;
408
409                 tqd->conf.txRingSize   = txq->cmd_ring.size;
410                 tqd->conf.compRingSize = txq->comp_ring.size;
411                 tqd->conf.dataRingSize = txq->data_ring.size;
412                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
413                 tqd->status.stopped    = TRUE;
414                 tqd->status.error      = 0;
415                 memset(&tqd->stats, 0, sizeof(tqd->stats));
416         }
417
418         for (i = 0; i < hw->num_rx_queues; i++) {
419                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
420                 vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
421
422                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
423                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
424                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
425
426                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
427                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
428                 rqd->conf.compRingSize    = rxq->comp_ring.size;
429                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
430                 rqd->status.stopped       = TRUE;
431                 rqd->status.error         = 0;
432                 memset(&rqd->stats, 0, sizeof(rqd->stats));
433         }
434
435         /* RxMode set to 0 of VMXNET3_RXM_xxx */
436         devRead->rxFilterConf.rxMode = 0;
437
438         /* Setting up feature flags */
439         if (dev->data->dev_conf.rxmode.hw_ip_checksum)
440                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
441
442         if (dev->data->dev_conf.rxmode.hw_vlan_strip)
443                 devRead->misc.uptFeatures |= VMXNET3_F_RXVLAN;
444
445         if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
446                 ret = vmxnet3_rss_configure(dev);
447                 if (ret != VMXNET3_SUCCESS)
448                         return ret;
449
450                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
451                 devRead->rssConfDesc.confVer = 1;
452                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
453                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
454         }
455
456         if (dev->data->dev_conf.rxmode.hw_vlan_filter) {
457                 ret = vmxnet3_vlan_configure(dev);
458                 if (ret != VMXNET3_SUCCESS)
459                         return ret;
460         }
461
462         PMD_INIT_LOG(DEBUG,
463                      "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
464                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
465                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
466
467         /* Write MAC Address back to device */
468         mac_ptr = (uint32_t *)hw->perm_addr;
469         val = *mac_ptr;
470         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
471
472         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
473         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
474
475         return VMXNET3_SUCCESS;
476 }
477
478 /*
479  * Configure device link speed and setup link.
480  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
481  * It returns 0 on success.
482  */
483 static int
484 vmxnet3_dev_start(struct rte_eth_dev *dev)
485 {
486         int status, ret;
487         struct vmxnet3_hw *hw = dev->data->dev_private;
488
489         PMD_INIT_FUNC_TRACE();
490
491         ret = vmxnet3_setup_driver_shared(dev);
492         if (ret != VMXNET3_SUCCESS)
493                 return ret;
494
495         /* Exchange shared data with device */
496         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL,
497                                VMXNET3_GET_ADDR_LO(hw->sharedPA));
498         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH,
499                                VMXNET3_GET_ADDR_HI(hw->sharedPA));
500
501         /* Activate device by register write */
502         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
503         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
504
505         if (status != 0) {
506                 PMD_INIT_LOG(ERR, "Device activation in %s(): UNSUCCESSFUL", __func__);
507                 return -1;
508         }
509
510         /* Disable interrupts */
511         vmxnet3_disable_intr(hw);
512
513         /*
514          * Load RX queues with blank mbufs and update next2fill index for device
515          * Update RxMode of the device
516          */
517         ret = vmxnet3_dev_rxtx_init(dev);
518         if (ret != VMXNET3_SUCCESS) {
519                 PMD_INIT_LOG(ERR, "Device receive init in %s: UNSUCCESSFUL", __func__);
520                 return ret;
521         }
522
523         /* Setting proper Rx Mode and issue Rx Mode Update command */
524         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_BCAST, 1);
525
526         /*
527          * Don't need to handle events for now
528          */
529 #if PROCESS_SYS_EVENTS == 1
530         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
531         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X", events);
532         vmxnet3_process_events(hw);
533 #endif
534         return status;
535 }
536
537 /*
538  * Stop device: disable rx and tx functions to allow for reconfiguring.
539  */
540 static void
541 vmxnet3_dev_stop(struct rte_eth_dev *dev)
542 {
543         struct rte_eth_link link;
544         struct vmxnet3_hw *hw = dev->data->dev_private;
545
546         PMD_INIT_FUNC_TRACE();
547
548         if (hw->adapter_stopped == TRUE) {
549                 PMD_INIT_LOG(DEBUG, "Device already closed.");
550                 return;
551         }
552
553         /* disable interrupts */
554         vmxnet3_disable_intr(hw);
555
556         /* quiesce the device first */
557         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
558         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
559         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
560
561         /* reset the device */
562         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
563         PMD_INIT_LOG(DEBUG, "Device reset.");
564         hw->adapter_stopped = FALSE;
565
566         vmxnet3_dev_clear_queues(dev);
567
568         /* Clear recorded link status */
569         memset(&link, 0, sizeof(link));
570         rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
571 }
572
573 /*
574  * Reset and stop device.
575  */
576 static void
577 vmxnet3_dev_close(struct rte_eth_dev *dev)
578 {
579         struct vmxnet3_hw *hw = dev->data->dev_private;
580
581         PMD_INIT_FUNC_TRACE();
582
583         vmxnet3_dev_stop(dev);
584         hw->adapter_stopped = TRUE;
585 }
586
587 static void
588 vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
589 {
590         unsigned int i;
591         struct vmxnet3_hw *hw = dev->data->dev_private;
592
593         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
594
595         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES);
596         for (i = 0; i < hw->num_tx_queues; i++) {
597                 struct UPT1_TxStats *txStats = &hw->tqd_start[i].stats;
598
599                 stats->q_opackets[i] = txStats->ucastPktsTxOK +
600                         txStats->mcastPktsTxOK +
601                         txStats->bcastPktsTxOK;
602                 stats->q_obytes[i] = txStats->ucastBytesTxOK +
603                         txStats->mcastBytesTxOK +
604                         txStats->bcastBytesTxOK;
605
606                 stats->opackets += stats->q_opackets[i];
607                 stats->obytes += stats->q_obytes[i];
608                 stats->oerrors += txStats->pktsTxError +
609                         txStats->pktsTxDiscard;
610         }
611
612         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES);
613         for (i = 0; i < hw->num_rx_queues; i++) {
614                 struct UPT1_RxStats *rxStats = &hw->rqd_start[i].stats;
615
616                 stats->q_ipackets[i] = rxStats->ucastPktsRxOK +
617                         rxStats->mcastPktsRxOK +
618                         rxStats->bcastPktsRxOK;
619
620                 stats->q_ibytes[i] = rxStats->ucastBytesRxOK +
621                         rxStats->mcastBytesRxOK +
622                         rxStats->bcastBytesRxOK;
623
624                 stats->ipackets += stats->q_ipackets[i];
625                 stats->ibytes += stats->q_ibytes[i];
626
627                 stats->q_errors[i] = rxStats->pktsRxError;
628                 stats->ierrors += rxStats->pktsRxError;
629                 stats->imcasts += rxStats->mcastPktsRxOK;
630                 stats->rx_nombuf += rxStats->pktsRxOutOfBuf;
631         }
632 }
633
634 static void
635 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
636 {
637         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
638         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
639         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
640         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
641         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
642
643         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
644                                                 ETH_TXQ_FLAGS_NOOFFLOADS;
645         dev_info->flow_type_rss_offloads = VMXNET3_RSS_OFFLOAD_ALL;
646 }
647
648 /* return 0 means link status changed, -1 means not changed */
649 static int
650 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
651 {
652         struct vmxnet3_hw *hw = dev->data->dev_private;
653         struct rte_eth_link link;
654         uint32_t ret;
655
656         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
657         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
658
659         if (!ret) {
660                 PMD_INIT_LOG(ERR, "Link Status Negative : %s()", __func__);
661                 return -1;
662         }
663
664         if (ret & 0x1) {
665                 link.link_status = 1;
666                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
667                 link.link_speed = ETH_LINK_SPEED_10000;
668
669                 rte_vmxnet3_dev_atomic_write_link_status(dev, &link);
670
671                 return 0;
672         }
673
674         return -1;
675 }
676
677 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
678 static void
679 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
680
681         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
682
683         if (set)
684                 rxConf->rxMode = rxConf->rxMode | feature;
685         else
686                 rxConf->rxMode = rxConf->rxMode & (~feature);
687
688         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
689 }
690
691 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
692 static void
693 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
694 {
695         struct vmxnet3_hw *hw = dev->data->dev_private;
696
697         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
698 }
699
700 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
701 static void
702 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
703 {
704         struct vmxnet3_hw *hw = dev->data->dev_private;
705
706         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
707 }
708
709 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
710 static void
711 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
712 {
713         struct vmxnet3_hw *hw = dev->data->dev_private;
714
715         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 1);
716 }
717
718 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
719 static void
720 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
721 {
722         struct vmxnet3_hw *hw = dev->data->dev_private;
723
724         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
725 }
726
727 #if PROCESS_SYS_EVENTS == 1
728 static void
729 vmxnet3_process_events(struct vmxnet3_hw *hw)
730 {
731         uint32_t events = hw->shared->ecr;
732
733         if (!events) {
734                 PMD_INIT_LOG(ERR, "No events to process in %s()", __func__);
735                 return;
736         }
737
738         /*
739          * ECR bits when written with 1b are cleared. Hence write
740          * events back to ECR so that the bits which were set will be reset.
741          */
742         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
743
744         /* Check if link state has changed */
745         if (events & VMXNET3_ECR_LINK)
746                 PMD_INIT_LOG(ERR,
747                              "Process events in %s(): VMXNET3_ECR_LINK event", __func__);
748
749         /* Check if there is an error on xmit/recv queues */
750         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
751                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
752
753                 if (hw->tqd_start->status.stopped)
754                         PMD_INIT_LOG(ERR, "tq error 0x%x",
755                                      hw->tqd_start->status.error);
756
757                 if (hw->rqd_start->status.stopped)
758                         PMD_INIT_LOG(ERR, "rq error 0x%x",
759                                      hw->rqd_start->status.error);
760
761                 /* Reset the device */
762                 /* Have to reset the device */
763         }
764
765         if (events & VMXNET3_ECR_DIC)
766                 PMD_INIT_LOG(ERR, "Device implementation change event.");
767
768         if (events & VMXNET3_ECR_DEBUG)
769                 PMD_INIT_LOG(ERR, "Debug event generated by device.");
770
771 }
772 #endif
773
774 static struct rte_driver rte_vmxnet3_driver = {
775         .type = PMD_PDEV,
776         .init = rte_vmxnet3_pmd_init,
777 };
778
779 PMD_REGISTER_DRIVER(rte_vmxnet3_driver);