ixgbe: remove useless interrupt freeing when closing
[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 int vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev,
90                                        uint16_t vid, int on);
91 static void vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask);
92 static void vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
93                                                 int mask, int clear);
94
95 #if PROCESS_SYS_EVENTS == 1
96 static void vmxnet3_process_events(struct vmxnet3_hw *);
97 #endif
98 /*
99  * The set of PCI devices this driver supports
100  */
101 static const struct rte_pci_id pci_id_vmxnet3_map[] = {
102
103 #define RTE_PCI_DEV_ID_DECL_VMXNET3(vend, dev) {RTE_PCI_DEVICE(vend, dev)},
104 #include "rte_pci_dev_ids.h"
105
106 { .vendor_id = 0, /* sentinel */ },
107 };
108
109 static const struct eth_dev_ops vmxnet3_eth_dev_ops = {
110         .dev_configure        = vmxnet3_dev_configure,
111         .dev_start            = vmxnet3_dev_start,
112         .dev_stop             = vmxnet3_dev_stop,
113         .dev_close            = vmxnet3_dev_close,
114         .promiscuous_enable   = vmxnet3_dev_promiscuous_enable,
115         .promiscuous_disable  = vmxnet3_dev_promiscuous_disable,
116         .allmulticast_enable  = vmxnet3_dev_allmulticast_enable,
117         .allmulticast_disable = vmxnet3_dev_allmulticast_disable,
118         .link_update          = vmxnet3_dev_link_update,
119         .stats_get            = vmxnet3_dev_stats_get,
120         .dev_infos_get        = vmxnet3_dev_info_get,
121         .vlan_filter_set      = vmxnet3_dev_vlan_filter_set,
122         .vlan_offload_set     = vmxnet3_dev_vlan_offload_set,
123         .rx_queue_setup       = vmxnet3_dev_rx_queue_setup,
124         .rx_queue_release     = vmxnet3_dev_rx_queue_release,
125         .tx_queue_setup       = vmxnet3_dev_tx_queue_setup,
126         .tx_queue_release     = vmxnet3_dev_tx_queue_release,
127 };
128
129 static const struct rte_memzone *
130 gpa_zone_reserve(struct rte_eth_dev *dev, uint32_t size,
131                 const char *post_string, int socket_id, uint16_t align)
132 {
133         char z_name[RTE_MEMZONE_NAMESIZE];
134         const struct rte_memzone *mz;
135
136         snprintf(z_name, sizeof(z_name), "%s_%d_%s",
137                                         dev->driver->pci_drv.name, dev->data->port_id, post_string);
138
139         mz = rte_memzone_lookup(z_name);
140         if (mz)
141                 return mz;
142
143         return rte_memzone_reserve_aligned(z_name, size,
144                         socket_id, 0, align);
145 }
146
147 /**
148  * Atomically reads the link status information from global
149  * structure rte_eth_dev.
150  *
151  * @param dev
152  *   - Pointer to the structure rte_eth_dev to read from.
153  *   - Pointer to the buffer to be saved with the link status.
154  *
155  * @return
156  *   - On success, zero.
157  *   - On failure, negative value.
158  */
159
160 static int
161 vmxnet3_dev_atomic_read_link_status(struct rte_eth_dev *dev,
162                                     struct rte_eth_link *link)
163 {
164         struct rte_eth_link *dst = link;
165         struct rte_eth_link *src = &(dev->data->dev_link);
166
167         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
168                                 *(uint64_t *)src) == 0)
169                 return -1;
170
171         return 0;
172 }
173
174 /**
175  * Atomically writes the link status information into global
176  * structure rte_eth_dev.
177  *
178  * @param dev
179  *   - Pointer to the structure rte_eth_dev to write to.
180  *   - Pointer to the buffer to be saved with the link status.
181  *
182  * @return
183  *   - On success, zero.
184  *   - On failure, negative value.
185  */
186 static int
187 vmxnet3_dev_atomic_write_link_status(struct rte_eth_dev *dev,
188                                      struct rte_eth_link *link)
189 {
190         struct rte_eth_link *dst = &(dev->data->dev_link);
191         struct rte_eth_link *src = link;
192
193         if (rte_atomic64_cmpset((uint64_t *)dst, *(uint64_t *)dst,
194                                         *(uint64_t *)src) == 0)
195                 return -1;
196
197         return 0;
198 }
199
200 /*
201  * This function is based on vmxnet3_disable_intr()
202  */
203 static void
204 vmxnet3_disable_intr(struct vmxnet3_hw *hw)
205 {
206         int i;
207
208         PMD_INIT_FUNC_TRACE();
209
210         hw->shared->devRead.intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
211         for (i = 0; i < VMXNET3_MAX_INTRS; i++)
212                         VMXNET3_WRITE_BAR0_REG(hw, VMXNET3_REG_IMR + i * 8, 1);
213 }
214
215 /*
216  * It returns 0 on success.
217  */
218 static int
219 eth_vmxnet3_dev_init(struct rte_eth_dev *eth_dev)
220 {
221         struct rte_pci_device *pci_dev;
222         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
223         uint32_t mac_hi, mac_lo, ver;
224
225         PMD_INIT_FUNC_TRACE();
226
227         eth_dev->dev_ops = &vmxnet3_eth_dev_ops;
228         eth_dev->rx_pkt_burst = &vmxnet3_recv_pkts;
229         eth_dev->tx_pkt_burst = &vmxnet3_xmit_pkts;
230         pci_dev = eth_dev->pci_dev;
231
232         /*
233          * for secondary processes, we don't initialize any further as primary
234          * has already done this work.
235          */
236         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
237                 return 0;
238
239         rte_eth_copy_pci_info(eth_dev, pci_dev);
240
241         /* Vendor and Device ID need to be set before init of shared code */
242         hw->device_id = pci_dev->id.device_id;
243         hw->vendor_id = pci_dev->id.vendor_id;
244         hw->hw_addr0 = (void *)pci_dev->mem_resource[0].addr;
245         hw->hw_addr1 = (void *)pci_dev->mem_resource[1].addr;
246
247         hw->num_rx_queues = 1;
248         hw->num_tx_queues = 1;
249         hw->bufs_per_pkt = 1;
250
251         /* Check h/w version compatibility with driver. */
252         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_VRRS);
253         PMD_INIT_LOG(DEBUG, "Hardware version : %d", ver);
254         if (ver & 0x1)
255                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_VRRS, 1);
256         else {
257                 PMD_INIT_LOG(ERR, "Incompatible h/w version, should be 0x1");
258                 return -EIO;
259         }
260
261         /* Check UPT version compatibility with driver. */
262         ver = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_UVRS);
263         PMD_INIT_LOG(DEBUG, "UPT hardware version : %d", ver);
264         if (ver & 0x1)
265                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_UVRS, 1);
266         else {
267                 PMD_INIT_LOG(ERR, "Incompatible UPT version.");
268                 return -EIO;
269         }
270
271         /* Getting MAC Address */
272         mac_lo = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACL);
273         mac_hi = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_MACH);
274         memcpy(hw->perm_addr  , &mac_lo, 4);
275         memcpy(hw->perm_addr+4, &mac_hi, 2);
276
277         /* Allocate memory for storing MAC addresses */
278         eth_dev->data->mac_addrs = rte_zmalloc("vmxnet3", ETHER_ADDR_LEN *
279                                                VMXNET3_MAX_MAC_ADDRS, 0);
280         if (eth_dev->data->mac_addrs == NULL) {
281                 PMD_INIT_LOG(ERR,
282                              "Failed to allocate %d bytes needed to store MAC addresses",
283                              ETHER_ADDR_LEN * VMXNET3_MAX_MAC_ADDRS);
284                 return -ENOMEM;
285         }
286         /* Copy the permanent MAC address */
287         ether_addr_copy((struct ether_addr *) hw->perm_addr,
288                         &eth_dev->data->mac_addrs[0]);
289
290         PMD_INIT_LOG(DEBUG, "MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
291                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
292                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
293
294         /* Put device in Quiesce Mode */
295         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
296
297         return 0;
298 }
299
300 static int
301 eth_vmxnet3_dev_uninit(struct rte_eth_dev *eth_dev)
302 {
303         struct vmxnet3_hw *hw = eth_dev->data->dev_private;
304
305         PMD_INIT_FUNC_TRACE();
306
307         if (rte_eal_process_type() != RTE_PROC_PRIMARY)
308                 return 0;
309
310         if (hw->adapter_stopped == 0)
311                 vmxnet3_dev_close(eth_dev);
312
313         eth_dev->dev_ops = NULL;
314         eth_dev->rx_pkt_burst = NULL;
315         eth_dev->tx_pkt_burst = NULL;
316
317         rte_free(eth_dev->data->mac_addrs);
318         eth_dev->data->mac_addrs = NULL;
319
320         return 0;
321 }
322
323 static struct eth_driver rte_vmxnet3_pmd = {
324         .pci_drv = {
325                 .name = "rte_vmxnet3_pmd",
326                 .id_table = pci_id_vmxnet3_map,
327                 .drv_flags = RTE_PCI_DRV_NEED_MAPPING | RTE_PCI_DRV_DETACHABLE,
328         },
329         .eth_dev_init = eth_vmxnet3_dev_init,
330         .eth_dev_uninit = eth_vmxnet3_dev_uninit,
331         .dev_private_size = sizeof(struct vmxnet3_hw),
332 };
333
334 /*
335  * Driver initialization routine.
336  * Invoked once at EAL init time.
337  * Register itself as the [Poll Mode] Driver of Virtual PCI VMXNET3 devices.
338  */
339 static int
340 rte_vmxnet3_pmd_init(const char *name __rte_unused, const char *param __rte_unused)
341 {
342         PMD_INIT_FUNC_TRACE();
343
344         rte_eth_driver_register(&rte_vmxnet3_pmd);
345         return 0;
346 }
347
348 static int
349 vmxnet3_dev_configure(struct rte_eth_dev *dev)
350 {
351         const struct rte_memzone *mz;
352         struct vmxnet3_hw *hw = dev->data->dev_private;
353         size_t size;
354
355         PMD_INIT_FUNC_TRACE();
356
357         if (dev->data->nb_rx_queues > UINT8_MAX ||
358             dev->data->nb_tx_queues > UINT8_MAX)
359                 return -EINVAL;
360
361         size = dev->data->nb_rx_queues * sizeof(struct Vmxnet3_TxQueueDesc) +
362                 dev->data->nb_tx_queues * sizeof(struct Vmxnet3_RxQueueDesc);
363
364         if (size > UINT16_MAX)
365                 return -EINVAL;
366
367         hw->num_rx_queues = (uint8_t)dev->data->nb_rx_queues;
368         hw->num_tx_queues = (uint8_t)dev->data->nb_tx_queues;
369
370         /*
371          * Allocate a memzone for Vmxnet3_DriverShared - Vmxnet3_DSDevRead
372          * on current socket
373          */
374         mz = gpa_zone_reserve(dev, sizeof(struct Vmxnet3_DriverShared),
375                               "shared", rte_socket_id(), 8);
376
377         if (mz == NULL) {
378                 PMD_INIT_LOG(ERR, "ERROR: Creating shared zone");
379                 return -ENOMEM;
380         }
381         memset(mz->addr, 0, mz->len);
382
383         hw->shared = mz->addr;
384         hw->sharedPA = mz->phys_addr;
385
386         /*
387          * Allocate a memzone for Vmxnet3_RxQueueDesc - Vmxnet3_TxQueueDesc
388          * on current socket
389          */
390         mz = gpa_zone_reserve(dev, size, "queuedesc",
391                               rte_socket_id(), VMXNET3_QUEUE_DESC_ALIGN);
392         if (mz == NULL) {
393                 PMD_INIT_LOG(ERR, "ERROR: Creating queue descriptors zone");
394                 return -ENOMEM;
395         }
396         memset(mz->addr, 0, mz->len);
397
398         hw->tqd_start = (Vmxnet3_TxQueueDesc *)mz->addr;
399         hw->rqd_start = (Vmxnet3_RxQueueDesc *)(hw->tqd_start + hw->num_tx_queues);
400
401         hw->queueDescPA = mz->phys_addr;
402         hw->queue_desc_len = (uint16_t)size;
403
404         if (dev->data->dev_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
405
406                 /* Allocate memory structure for UPT1_RSSConf and configure */
407                 mz = gpa_zone_reserve(dev, sizeof(struct VMXNET3_RSSConf), "rss_conf",
408                                       rte_socket_id(), RTE_CACHE_LINE_SIZE);
409                 if (mz == NULL) {
410                         PMD_INIT_LOG(ERR,
411                                      "ERROR: Creating rss_conf structure zone");
412                         return -ENOMEM;
413                 }
414                 memset(mz->addr, 0, mz->len);
415
416                 hw->rss_conf = mz->addr;
417                 hw->rss_confPA = mz->phys_addr;
418         }
419
420         return 0;
421 }
422
423 static int
424 vmxnet3_setup_driver_shared(struct rte_eth_dev *dev)
425 {
426         struct rte_eth_conf port_conf = dev->data->dev_conf;
427         struct vmxnet3_hw *hw = dev->data->dev_private;
428         Vmxnet3_DriverShared *shared = hw->shared;
429         Vmxnet3_DSDevRead *devRead = &shared->devRead;
430         uint32_t *mac_ptr;
431         uint32_t val, i;
432         int ret, mask;
433
434         shared->magic = VMXNET3_REV1_MAGIC;
435         devRead->misc.driverInfo.version = VMXNET3_DRIVER_VERSION_NUM;
436
437         /* Setting up Guest OS information */
438         devRead->misc.driverInfo.gos.gosBits   = sizeof(void *) == 4 ?
439                 VMXNET3_GOS_BITS_32 :
440                 VMXNET3_GOS_BITS_64;
441         devRead->misc.driverInfo.gos.gosType   = VMXNET3_GOS_TYPE_LINUX;
442         devRead->misc.driverInfo.vmxnet3RevSpt = 1;
443         devRead->misc.driverInfo.uptVerSpt     = 1;
444
445         devRead->misc.mtu = rte_le_to_cpu_32(dev->data->mtu);
446         devRead->misc.queueDescPA  = hw->queueDescPA;
447         devRead->misc.queueDescLen = hw->queue_desc_len;
448         devRead->misc.numTxQueues  = hw->num_tx_queues;
449         devRead->misc.numRxQueues  = hw->num_rx_queues;
450
451         /*
452          * Set number of interrupts to 1
453          * PMD disables all the interrupts but this is MUST to activate device
454          * It needs at least one interrupt for link events to handle
455          * So we'll disable it later after device activation if needed
456          */
457         devRead->intrConf.numIntrs = 1;
458         devRead->intrConf.intrCtrl |= VMXNET3_IC_DISABLE_ALL;
459
460         for (i = 0; i < hw->num_tx_queues; i++) {
461                 Vmxnet3_TxQueueDesc *tqd = &hw->tqd_start[i];
462                 vmxnet3_tx_queue_t *txq  = dev->data->tx_queues[i];
463
464                 tqd->ctrl.txNumDeferred  = 0;
465                 tqd->ctrl.txThreshold    = 1;
466                 tqd->conf.txRingBasePA   = txq->cmd_ring.basePA;
467                 tqd->conf.compRingBasePA = txq->comp_ring.basePA;
468                 tqd->conf.dataRingBasePA = txq->data_ring.basePA;
469
470                 tqd->conf.txRingSize   = txq->cmd_ring.size;
471                 tqd->conf.compRingSize = txq->comp_ring.size;
472                 tqd->conf.dataRingSize = txq->data_ring.size;
473                 tqd->conf.intrIdx      = txq->comp_ring.intr_idx;
474                 tqd->status.stopped    = TRUE;
475                 tqd->status.error      = 0;
476                 memset(&tqd->stats, 0, sizeof(tqd->stats));
477         }
478
479         for (i = 0; i < hw->num_rx_queues; i++) {
480                 Vmxnet3_RxQueueDesc *rqd  = &hw->rqd_start[i];
481                 vmxnet3_rx_queue_t *rxq   = dev->data->rx_queues[i];
482
483                 rqd->conf.rxRingBasePA[0] = rxq->cmd_ring[0].basePA;
484                 rqd->conf.rxRingBasePA[1] = rxq->cmd_ring[1].basePA;
485                 rqd->conf.compRingBasePA  = rxq->comp_ring.basePA;
486
487                 rqd->conf.rxRingSize[0]   = rxq->cmd_ring[0].size;
488                 rqd->conf.rxRingSize[1]   = rxq->cmd_ring[1].size;
489                 rqd->conf.compRingSize    = rxq->comp_ring.size;
490                 rqd->conf.intrIdx         = rxq->comp_ring.intr_idx;
491                 rqd->status.stopped       = TRUE;
492                 rqd->status.error         = 0;
493                 memset(&rqd->stats, 0, sizeof(rqd->stats));
494         }
495
496         /* RxMode set to 0 of VMXNET3_RXM_xxx */
497         devRead->rxFilterConf.rxMode = 0;
498
499         /* Setting up feature flags */
500         if (dev->data->dev_conf.rxmode.hw_ip_checksum)
501                 devRead->misc.uptFeatures |= VMXNET3_F_RXCSUM;
502
503         if (port_conf.rxmode.mq_mode == ETH_MQ_RX_RSS) {
504                 ret = vmxnet3_rss_configure(dev);
505                 if (ret != VMXNET3_SUCCESS)
506                         return ret;
507
508                 devRead->misc.uptFeatures |= VMXNET3_F_RSS;
509                 devRead->rssConfDesc.confVer = 1;
510                 devRead->rssConfDesc.confLen = sizeof(struct VMXNET3_RSSConf);
511                 devRead->rssConfDesc.confPA  = hw->rss_confPA;
512         }
513
514         mask = 0;
515         if (dev->data->dev_conf.rxmode.hw_vlan_strip)
516                 mask |= ETH_VLAN_STRIP_MASK;
517
518         if (dev->data->dev_conf.rxmode.hw_vlan_filter)
519                 mask |= ETH_VLAN_FILTER_MASK;
520
521         vmxnet3_dev_vlan_offload_set_clear(dev, mask, 1);
522
523         PMD_INIT_LOG(DEBUG,
524                      "Writing MAC Address : %02x:%02x:%02x:%02x:%02x:%02x",
525                      hw->perm_addr[0], hw->perm_addr[1], hw->perm_addr[2],
526                      hw->perm_addr[3], hw->perm_addr[4], hw->perm_addr[5]);
527
528         /* Write MAC Address back to device */
529         mac_ptr = (uint32_t *)hw->perm_addr;
530         val = *mac_ptr;
531         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACL, val);
532
533         val = (hw->perm_addr[5] << 8) | hw->perm_addr[4];
534         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_MACH, val);
535
536         return VMXNET3_SUCCESS;
537 }
538
539 /*
540  * Configure device link speed and setup link.
541  * Must be called after eth_vmxnet3_dev_init. Other wise it might fail
542  * It returns 0 on success.
543  */
544 static int
545 vmxnet3_dev_start(struct rte_eth_dev *dev)
546 {
547         int status, ret;
548         struct vmxnet3_hw *hw = dev->data->dev_private;
549
550         PMD_INIT_FUNC_TRACE();
551
552         ret = vmxnet3_setup_driver_shared(dev);
553         if (ret != VMXNET3_SUCCESS)
554                 return ret;
555
556         /* Exchange shared data with device */
557         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL,
558                                VMXNET3_GET_ADDR_LO(hw->sharedPA));
559         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH,
560                                VMXNET3_GET_ADDR_HI(hw->sharedPA));
561
562         /* Activate device by register write */
563         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_ACTIVATE_DEV);
564         status = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
565
566         if (status != 0) {
567                 PMD_INIT_LOG(ERR, "Device activation in %s(): UNSUCCESSFUL", __func__);
568                 return -1;
569         }
570
571         /* Disable interrupts */
572         vmxnet3_disable_intr(hw);
573
574         /*
575          * Load RX queues with blank mbufs and update next2fill index for device
576          * Update RxMode of the device
577          */
578         ret = vmxnet3_dev_rxtx_init(dev);
579         if (ret != VMXNET3_SUCCESS) {
580                 PMD_INIT_LOG(ERR, "Device receive init in %s: UNSUCCESSFUL", __func__);
581                 return ret;
582         }
583
584         /* Setting proper Rx Mode and issue Rx Mode Update command */
585         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_UCAST | VMXNET3_RXM_BCAST, 1);
586
587         /*
588          * Don't need to handle events for now
589          */
590 #if PROCESS_SYS_EVENTS == 1
591         events = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_ECR);
592         PMD_INIT_LOG(DEBUG, "Reading events: 0x%X", events);
593         vmxnet3_process_events(hw);
594 #endif
595         return status;
596 }
597
598 /*
599  * Stop device: disable rx and tx functions to allow for reconfiguring.
600  */
601 static void
602 vmxnet3_dev_stop(struct rte_eth_dev *dev)
603 {
604         struct rte_eth_link link;
605         struct vmxnet3_hw *hw = dev->data->dev_private;
606
607         PMD_INIT_FUNC_TRACE();
608
609         if (hw->adapter_stopped == 1) {
610                 PMD_INIT_LOG(DEBUG, "Device already closed.");
611                 return;
612         }
613
614         /* disable interrupts */
615         vmxnet3_disable_intr(hw);
616
617         /* quiesce the device first */
618         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_QUIESCE_DEV);
619         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAL, 0);
620         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_DSAH, 0);
621
622         /* reset the device */
623         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_RESET_DEV);
624         PMD_INIT_LOG(DEBUG, "Device reset.");
625         hw->adapter_stopped = 0;
626
627         vmxnet3_dev_clear_queues(dev);
628
629         /* Clear recorded link status */
630         memset(&link, 0, sizeof(link));
631         vmxnet3_dev_atomic_write_link_status(dev, &link);
632 }
633
634 /*
635  * Reset and stop device.
636  */
637 static void
638 vmxnet3_dev_close(struct rte_eth_dev *dev)
639 {
640         struct vmxnet3_hw *hw = dev->data->dev_private;
641
642         PMD_INIT_FUNC_TRACE();
643
644         vmxnet3_dev_stop(dev);
645         hw->adapter_stopped = 1;
646 }
647
648 static void
649 vmxnet3_dev_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
650 {
651         unsigned int i;
652         struct vmxnet3_hw *hw = dev->data->dev_private;
653
654         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_STATS);
655
656         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_TX_QUEUES);
657         for (i = 0; i < hw->num_tx_queues; i++) {
658                 struct UPT1_TxStats *txStats = &hw->tqd_start[i].stats;
659
660                 stats->q_opackets[i] = txStats->ucastPktsTxOK +
661                         txStats->mcastPktsTxOK +
662                         txStats->bcastPktsTxOK;
663                 stats->q_obytes[i] = txStats->ucastBytesTxOK +
664                         txStats->mcastBytesTxOK +
665                         txStats->bcastBytesTxOK;
666
667                 stats->opackets += stats->q_opackets[i];
668                 stats->obytes += stats->q_obytes[i];
669                 stats->oerrors += txStats->pktsTxError +
670                         txStats->pktsTxDiscard;
671         }
672
673         RTE_BUILD_BUG_ON(RTE_ETHDEV_QUEUE_STAT_CNTRS < VMXNET3_MAX_RX_QUEUES);
674         for (i = 0; i < hw->num_rx_queues; i++) {
675                 struct UPT1_RxStats *rxStats = &hw->rqd_start[i].stats;
676
677                 stats->q_ipackets[i] = rxStats->ucastPktsRxOK +
678                         rxStats->mcastPktsRxOK +
679                         rxStats->bcastPktsRxOK;
680
681                 stats->q_ibytes[i] = rxStats->ucastBytesRxOK +
682                         rxStats->mcastBytesRxOK +
683                         rxStats->bcastBytesRxOK;
684
685                 stats->ipackets += stats->q_ipackets[i];
686                 stats->ibytes += stats->q_ibytes[i];
687
688                 stats->q_errors[i] = rxStats->pktsRxError;
689                 stats->ierrors += rxStats->pktsRxError;
690                 stats->imcasts += rxStats->mcastPktsRxOK;
691                 stats->rx_nombuf += rxStats->pktsRxOutOfBuf;
692         }
693 }
694
695 static void
696 vmxnet3_dev_info_get(__attribute__((unused))struct rte_eth_dev *dev, struct rte_eth_dev_info *dev_info)
697 {
698         dev_info->max_rx_queues = VMXNET3_MAX_RX_QUEUES;
699         dev_info->max_tx_queues = VMXNET3_MAX_TX_QUEUES;
700         dev_info->min_rx_bufsize = 1518 + RTE_PKTMBUF_HEADROOM;
701         dev_info->max_rx_pktlen = 16384; /* includes CRC, cf MAXFRS register */
702         dev_info->max_mac_addrs = VMXNET3_MAX_MAC_ADDRS;
703
704         dev_info->default_txconf.txq_flags = ETH_TXQ_FLAGS_NOMULTSEGS |
705                                                 ETH_TXQ_FLAGS_NOOFFLOADS;
706         dev_info->flow_type_rss_offloads = VMXNET3_RSS_OFFLOAD_ALL;
707
708         dev_info->rx_desc_lim = (struct rte_eth_desc_lim) {
709                 .nb_max = VMXNET3_RX_RING_MAX_SIZE,
710                 .nb_min = VMXNET3_DEF_RX_RING_SIZE,
711                 .nb_align = 1,
712         };
713
714         dev_info->tx_desc_lim = (struct rte_eth_desc_lim) {
715                 .nb_max = VMXNET3_TX_RING_MAX_SIZE,
716                 .nb_min = VMXNET3_DEF_TX_RING_SIZE,
717                 .nb_align = 1,
718         };
719 }
720
721 /* return 0 means link status changed, -1 means not changed */
722 static int
723 vmxnet3_dev_link_update(struct rte_eth_dev *dev, __attribute__((unused)) int wait_to_complete)
724 {
725         struct vmxnet3_hw *hw = dev->data->dev_private;
726         struct rte_eth_link old, link;
727         uint32_t ret;
728
729         if (dev->data->dev_started == 0)
730                 return -1; /* Link status doesn't change for stopped dev */
731
732         memset(&link, 0, sizeof(link));
733         vmxnet3_dev_atomic_read_link_status(dev, &old);
734
735         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_LINK);
736         ret = VMXNET3_READ_BAR1_REG(hw, VMXNET3_REG_CMD);
737
738         if (ret & 0x1) {
739                 link.link_status = 1;
740                 link.link_duplex = ETH_LINK_FULL_DUPLEX;
741                 link.link_speed = ETH_LINK_SPEED_10000;
742         }
743
744         vmxnet3_dev_atomic_write_link_status(dev, &link);
745
746         return (old.link_status == link.link_status) ? -1 : 0;
747 }
748
749 /* Updating rxmode through Vmxnet3_DriverShared structure in adapter */
750 static void
751 vmxnet3_dev_set_rxmode(struct vmxnet3_hw *hw, uint32_t feature, int set) {
752
753         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
754
755         if (set)
756                 rxConf->rxMode = rxConf->rxMode | feature;
757         else
758                 rxConf->rxMode = rxConf->rxMode & (~feature);
759
760         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_UPDATE_RX_MODE);
761 }
762
763 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
764 static void
765 vmxnet3_dev_promiscuous_enable(struct rte_eth_dev *dev)
766 {
767         struct vmxnet3_hw *hw = dev->data->dev_private;
768         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
769
770         memset(vf_table, 0, VMXNET3_VFT_TABLE_SIZE);
771         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 1);
772
773         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
774                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
775 }
776
777 /* Promiscuous supported only if Vmxnet3_DriverShared is initialized in adapter */
778 static void
779 vmxnet3_dev_promiscuous_disable(struct rte_eth_dev *dev)
780 {
781         struct vmxnet3_hw *hw = dev->data->dev_private;
782         uint32_t *vf_table = hw->shared->devRead.rxFilterConf.vfTable;
783
784         memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
785         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_PROMISC, 0);
786         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
787                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
788 }
789
790 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
791 static void
792 vmxnet3_dev_allmulticast_enable(struct rte_eth_dev *dev)
793 {
794         struct vmxnet3_hw *hw = dev->data->dev_private;
795
796         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 1);
797 }
798
799 /* Allmulticast supported only if Vmxnet3_DriverShared is initialized in adapter */
800 static void
801 vmxnet3_dev_allmulticast_disable(struct rte_eth_dev *dev)
802 {
803         struct vmxnet3_hw *hw = dev->data->dev_private;
804
805         vmxnet3_dev_set_rxmode(hw, VMXNET3_RXM_ALL_MULTI, 0);
806 }
807
808 /* Enable/disable filter on vlan */
809 static int
810 vmxnet3_dev_vlan_filter_set(struct rte_eth_dev *dev, uint16_t vid, int on)
811 {
812         struct vmxnet3_hw *hw = dev->data->dev_private;
813         struct Vmxnet3_RxFilterConf *rxConf = &hw->shared->devRead.rxFilterConf;
814         uint32_t *vf_table = rxConf->vfTable;
815
816         /* save state for restore */
817         if (on)
818                 VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, vid);
819         else
820                 VMXNET3_CLEAR_VFTABLE_ENTRY(hw->shadow_vfta, vid);
821
822         /* don't change active filter if in promiscious mode */
823         if (rxConf->rxMode & VMXNET3_RXM_PROMISC)
824                 return 0;
825
826         /* set in hardware */
827         if (on)
828                 VMXNET3_SET_VFTABLE_ENTRY(vf_table, vid);
829         else
830                 VMXNET3_CLEAR_VFTABLE_ENTRY(vf_table, vid);
831
832         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
833                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
834         return 0;
835 }
836
837 static void
838 vmxnet3_dev_vlan_offload_set_clear(struct rte_eth_dev *dev,
839                                    int mask, int clear)
840 {
841         struct vmxnet3_hw *hw = dev->data->dev_private;
842         Vmxnet3_DSDevRead *devRead = &hw->shared->devRead;
843         uint32_t *vf_table = devRead->rxFilterConf.vfTable;
844
845         if (mask & ETH_VLAN_STRIP_MASK)
846                 devRead->misc.uptFeatures |= UPT1_F_RXVLAN;
847         else
848                 devRead->misc.uptFeatures &= ~UPT1_F_RXVLAN;
849
850         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
851                                VMXNET3_CMD_UPDATE_FEATURE);
852
853         if (mask & ETH_VLAN_FILTER_MASK) {
854                 if (clear) {
855                         memset(hw->shadow_vfta, 0,
856                                VMXNET3_VFT_TABLE_SIZE);
857                         /* allow untagged pkts */
858                         VMXNET3_SET_VFTABLE_ENTRY(hw->shadow_vfta, 0);
859                 }
860                 memcpy(vf_table, hw->shadow_vfta, VMXNET3_VFT_TABLE_SIZE);
861         } else {
862                 /* allow any pkts -- no filtering */
863                 if (clear)
864                         memset(hw->shadow_vfta, 0xff, VMXNET3_VFT_TABLE_SIZE);
865                 memset(vf_table, 0xff, VMXNET3_VFT_TABLE_SIZE);
866         }
867
868         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD,
869                                VMXNET3_CMD_UPDATE_VLAN_FILTERS);
870 }
871
872 static void
873 vmxnet3_dev_vlan_offload_set(struct rte_eth_dev *dev, int mask)
874 {
875         vmxnet3_dev_vlan_offload_set_clear(dev, mask, 0);
876 }
877
878 #if PROCESS_SYS_EVENTS == 1
879 static void
880 vmxnet3_process_events(struct vmxnet3_hw *hw)
881 {
882         uint32_t events = hw->shared->ecr;
883
884         if (!events) {
885                 PMD_INIT_LOG(ERR, "No events to process in %s()", __func__);
886                 return;
887         }
888
889         /*
890          * ECR bits when written with 1b are cleared. Hence write
891          * events back to ECR so that the bits which were set will be reset.
892          */
893         VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_ECR, events);
894
895         /* Check if link state has changed */
896         if (events & VMXNET3_ECR_LINK)
897                 PMD_INIT_LOG(ERR,
898                              "Process events in %s(): VMXNET3_ECR_LINK event", __func__);
899
900         /* Check if there is an error on xmit/recv queues */
901         if (events & (VMXNET3_ECR_TQERR | VMXNET3_ECR_RQERR)) {
902                 VMXNET3_WRITE_BAR1_REG(hw, VMXNET3_REG_CMD, VMXNET3_CMD_GET_QUEUE_STATUS);
903
904                 if (hw->tqd_start->status.stopped)
905                         PMD_INIT_LOG(ERR, "tq error 0x%x",
906                                      hw->tqd_start->status.error);
907
908                 if (hw->rqd_start->status.stopped)
909                         PMD_INIT_LOG(ERR, "rq error 0x%x",
910                                      hw->rqd_start->status.error);
911
912                 /* Reset the device */
913                 /* Have to reset the device */
914         }
915
916         if (events & VMXNET3_ECR_DIC)
917                 PMD_INIT_LOG(ERR, "Device implementation change event.");
918
919         if (events & VMXNET3_ECR_DEBUG)
920                 PMD_INIT_LOG(ERR, "Debug event generated by device.");
921
922 }
923 #endif
924
925 static struct rte_driver rte_vmxnet3_driver = {
926         .type = PMD_PDEV,
927         .init = rte_vmxnet3_pmd_init,
928 };
929
930 PMD_REGISTER_DRIVER(rte_vmxnet3_driver);