2 * Copyright 2008-2014 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 * Copyright (c) 2014, Cisco Systems, Inc.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
24 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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28 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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31 * POSSIBILITY OF SUCH DAMAGE.
38 #include "vnic_enet.h"
43 #include "vnic_intr.h"
44 #include "vnic_stats.h"
48 #include "cq_enet_desc.h"
49 #include <sys/queue.h>
50 #include <rte_spinlock.h>
52 #define DRV_NAME "enic_pmd"
53 #define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Poll-mode Driver"
54 #define DRV_COPYRIGHT "Copyright 2008-2015 Cisco Systems, Inc"
57 /* With Rx scatter support, we use two RQs on VIC per RQ used by app. Both
58 * RQs use the same CQ.
60 #define ENIC_RQ_MAX 16
61 #define ENIC_CQ_MAX (ENIC_WQ_MAX + (ENIC_RQ_MAX / 2))
62 #define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
64 #define VLAN_ETH_HLEN 18
66 #define ENICPMD_SETTING(enic, f) ((enic->config.flags & VENETF_##f) ? 1 : 0)
68 #define ENICPMD_BDF_LENGTH 13 /* 0000:00:00.0'\0' */
69 #define ENIC_CALC_IP_CKSUM 1
70 #define ENIC_CALC_TCP_UDP_CKSUM 2
71 #define ENIC_MAX_MTU 9000
72 #define ENIC_PAGE_SIZE 4096
73 #define PAGE_ROUND_UP(x) \
74 ((((unsigned long)(x)) + ENIC_PAGE_SIZE-1) & (~(ENIC_PAGE_SIZE-1)))
76 #define ENICPMD_VFIO_PATH "/dev/vfio/vfio"
77 /*#define ENIC_DESC_COUNT_MAKE_ODD (x) do{if ((~(x)) & 1) { (x)--; } }while(0)*/
79 #define PCI_DEVICE_ID_CISCO_VIC_ENET 0x0043 /* ethernet vnic */
80 #define PCI_DEVICE_ID_CISCO_VIC_ENET_VF 0x0071 /* enet SRIOV VF */
83 #define ENICPMD_FDIR_MAX 64
85 struct enic_fdir_node {
86 struct rte_eth_fdir_filter filter;
92 struct rte_eth_fdir_stats stats;
93 struct rte_hash *hash;
94 struct enic_fdir_node *nodes[ENICPMD_FDIR_MAX];
97 void (*copy_fltr_fn)(struct filter_v2 *filt,
98 struct rte_eth_fdir_input *input,
99 struct rte_eth_fdir_masks *masks);
102 struct enic_soft_stats {
103 rte_atomic64_t rx_nombuf;
104 rte_atomic64_t rx_packet_errors;
107 struct enic_memzone_entry {
108 const struct rte_memzone *rz;
109 LIST_ENTRY(enic_memzone_entry) entries;
112 /* Per-instance private data structure */
115 struct rte_pci_device *pdev;
116 struct vnic_enet_config config;
117 struct vnic_dev_bar bar0;
118 struct vnic_dev *vdev;
120 unsigned int port_id;
121 struct rte_eth_dev *rte_dev;
122 struct enic_fdir fdir;
123 char bdf_name[ENICPMD_BDF_LENGTH];
128 uint8_t mac_addr[ETH_ALEN];
129 pthread_t err_intr_thread;
139 unsigned int priv_flags;
142 struct vnic_wq wq[ENIC_WQ_MAX];
143 unsigned int wq_count;
146 struct vnic_rq rq[ENIC_RQ_MAX];
147 unsigned int rq_count;
149 /* completion queue */
150 struct vnic_cq cq[ENIC_CQ_MAX];
151 unsigned int cq_count;
153 /* interrupt resource */
154 struct vnic_intr intr;
155 unsigned int intr_count;
157 /* software counters */
158 struct enic_soft_stats soft_stats;
160 /* configured resources on vic */
161 unsigned int conf_rq_count;
162 unsigned int conf_wq_count;
163 unsigned int conf_cq_count;
164 unsigned int conf_intr_count;
166 /* linked list storing memory allocations */
167 LIST_HEAD(enic_memzone_list, enic_memzone_entry) memzone_list;
168 rte_spinlock_t memzone_list_lock;
169 rte_spinlock_t mtu_lock;
173 /* Get the CQ index from a Start of Packet(SOP) RQ index */
174 static inline unsigned int enic_sop_rq_idx_to_cq_idx(unsigned int sop_idx)
178 static inline unsigned int enic_rq_sop(unsigned int sop_rq)
183 static inline unsigned int enic_sop_rq(unsigned int rq)
188 static inline unsigned int enic_data_rq(unsigned int rq)
193 static inline unsigned int enic_vnic_rq_count(struct enic *enic)
195 return enic->rq_count * 2;
198 static inline unsigned int enic_cq_rq(__rte_unused struct enic *enic, unsigned int rq)
200 /* Scatter rx uses two receive queues together with one
201 * completion queue, so the completion queue number is no
202 * longer the same as the rq number.
207 static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
209 return enic->rq_count + wq;
212 static inline unsigned int enic_msix_err_intr(__rte_unused struct enic *enic)
217 static inline struct enic *pmd_priv(struct rte_eth_dev *eth_dev)
219 return (struct enic *)eth_dev->data->dev_private;
222 static inline uint32_t
223 enic_ring_add(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
225 uint32_t d = i0 + i1;
226 d -= (d >= n_descriptors) ? n_descriptors : 0;
230 static inline uint32_t
231 enic_ring_sub(uint32_t n_descriptors, uint32_t i0, uint32_t i1)
234 return (uint32_t)((d < 0) ? ((int32_t)n_descriptors + d) : d);
237 static inline uint32_t
238 enic_ring_incr(uint32_t n_descriptors, uint32_t idx)
241 if (unlikely(idx == n_descriptors))
246 extern void enic_fdir_stats_get(struct enic *enic,
247 struct rte_eth_fdir_stats *stats);
248 extern int enic_fdir_add_fltr(struct enic *enic,
249 struct rte_eth_fdir_filter *params);
250 extern int enic_fdir_del_fltr(struct enic *enic,
251 struct rte_eth_fdir_filter *params);
252 extern void enic_free_wq(void *txq);
253 extern int enic_alloc_intr_resources(struct enic *enic);
254 extern int enic_setup_finish(struct enic *enic);
255 extern int enic_alloc_wq(struct enic *enic, uint16_t queue_idx,
256 unsigned int socket_id, uint16_t nb_desc);
257 extern void enic_start_wq(struct enic *enic, uint16_t queue_idx);
258 extern int enic_stop_wq(struct enic *enic, uint16_t queue_idx);
259 extern void enic_start_rq(struct enic *enic, uint16_t queue_idx);
260 extern int enic_stop_rq(struct enic *enic, uint16_t queue_idx);
261 extern void enic_free_rq(void *rxq);
262 extern int enic_alloc_rq(struct enic *enic, uint16_t queue_idx,
263 unsigned int socket_id, struct rte_mempool *mp,
265 extern int enic_set_rss_nic_cfg(struct enic *enic);
266 extern int enic_set_vnic_res(struct enic *enic);
267 extern void enic_set_hdr_split_size(struct enic *enic, u16 split_hdr_size);
268 extern int enic_enable(struct enic *enic);
269 extern int enic_disable(struct enic *enic);
270 extern void enic_remove(struct enic *enic);
271 extern int enic_get_link_status(struct enic *enic);
272 extern void enic_dev_stats_get(struct enic *enic,
273 struct rte_eth_stats *r_stats);
274 extern void enic_dev_stats_clear(struct enic *enic);
275 extern void enic_add_packet_filter(struct enic *enic);
276 extern void enic_set_mac_address(struct enic *enic, uint8_t *mac_addr);
277 extern void enic_del_mac_address(struct enic *enic);
278 extern unsigned int enic_cleanup_wq(struct enic *enic, struct vnic_wq *wq);
279 extern void enic_send_pkt(struct enic *enic, struct vnic_wq *wq,
280 struct rte_mbuf *tx_pkt, unsigned short len,
281 uint8_t sop, uint8_t eop, uint8_t cq_entry,
282 uint16_t ol_flags, uint16_t vlan_tag);
284 extern void enic_post_wq_index(struct vnic_wq *wq);
285 extern int enic_probe(struct enic *enic);
286 extern int enic_clsf_init(struct enic *enic);
287 extern void enic_clsf_destroy(struct enic *enic);
288 uint16_t enic_recv_pkts(void *rx_queue, struct rte_mbuf **rx_pkts,
290 uint16_t enic_dummy_recv_pkts(__rte_unused void *rx_queue,
291 __rte_unused struct rte_mbuf **rx_pkts,
292 __rte_unused uint16_t nb_pkts);
293 uint16_t enic_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
295 int enic_set_mtu(struct enic *enic, uint16_t new_mtu);
296 int enic_link_update(struct enic *enic);
297 void enic_fdir_info(struct enic *enic);
298 void enic_fdir_info_get(struct enic *enic, struct rte_eth_fdir_info *stats);
299 void copy_fltr_v1(struct filter_v2 *fltr, struct rte_eth_fdir_input *input,
300 struct rte_eth_fdir_masks *masks);
301 void copy_fltr_v2(__rte_unused struct filter_v2 *fltr,
302 __rte_unused struct rte_eth_fdir_input *input,
303 __rte_unused struct rte_eth_fdir_masks *masks);
304 #endif /* _ENIC_H_ */