1e6550b3eSThomas Gleixner /* SPDX-License-Identifier: GPL-2.0-only */
2a6a5580cSJeff Kirsher /*
3a6a5580cSJeff Kirsher * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
4a6a5580cSJeff Kirsher * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5a6a5580cSJeff Kirsher */
6a6a5580cSJeff Kirsher
7a6a5580cSJeff Kirsher #ifndef _ENIC_H_
8a6a5580cSJeff Kirsher #define _ENIC_H_
9a6a5580cSJeff Kirsher
10a6a5580cSJeff Kirsher #include "vnic_enet.h"
11a6a5580cSJeff Kirsher #include "vnic_dev.h"
12a6a5580cSJeff Kirsher #include "vnic_wq.h"
13a6a5580cSJeff Kirsher #include "vnic_rq.h"
14a6a5580cSJeff Kirsher #include "vnic_cq.h"
15a6a5580cSJeff Kirsher #include "vnic_intr.h"
16a6a5580cSJeff Kirsher #include "vnic_stats.h"
17a6a5580cSJeff Kirsher #include "vnic_nic.h"
18a6a5580cSJeff Kirsher #include "vnic_rss.h"
19fef1f07cSJosh Boyer #include <linux/irq.h>
20a6a5580cSJeff Kirsher
21a6a5580cSJeff Kirsher #define DRV_NAME "enic"
22a6a5580cSJeff Kirsher #define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver"
23a6a5580cSJeff Kirsher
24a6a5580cSJeff Kirsher #define ENIC_BARS_MAX 6
25a6a5580cSJeff Kirsher
26822473b6Sgovindarajulu.v #define ENIC_WQ_MAX 8
2763da93d9SNeel Patel #define ENIC_RQ_MAX 8
28a6a5580cSJeff Kirsher #define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX)
29a6a5580cSJeff Kirsher #define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
30a6a5580cSJeff Kirsher
3118feb871SGovindarajulu Varadarajan #define ENIC_WQ_NAPI_BUDGET 256
3218feb871SGovindarajulu Varadarajan
337c2ce6e6SSujith Sankar #define ENIC_AIC_LARGE_PKT_DIFF 3
347c2ce6e6SSujith Sankar
35a6a5580cSJeff Kirsher struct enic_msix_entry {
36a6a5580cSJeff Kirsher int requested;
377044f429SGovindarajulu Varadarajan char devname[IFNAMSIZ + 8];
38a6a5580cSJeff Kirsher irqreturn_t (*isr)(int, void *);
39a6a5580cSJeff Kirsher void *devid;
40322cf7e3SGovindarajulu Varadarajan cpumask_var_t affinity_mask;
41a6a5580cSJeff Kirsher };
42a6a5580cSJeff Kirsher
437c2ce6e6SSujith Sankar /* Store only the lower range. Higher range is given by fw. */
447c2ce6e6SSujith Sankar struct enic_intr_mod_range {
457c2ce6e6SSujith Sankar u32 small_pkt_range_start;
467c2ce6e6SSujith Sankar u32 large_pkt_range_start;
477c2ce6e6SSujith Sankar };
487c2ce6e6SSujith Sankar
497c2ce6e6SSujith Sankar struct enic_intr_mod_table {
507c2ce6e6SSujith Sankar u32 rx_rate;
517c2ce6e6SSujith Sankar u32 range_percent;
527c2ce6e6SSujith Sankar };
537c2ce6e6SSujith Sankar
547c2ce6e6SSujith Sankar #define ENIC_MAX_LINK_SPEEDS 3
557c2ce6e6SSujith Sankar #define ENIC_LINK_SPEED_10G 10000
567c2ce6e6SSujith Sankar #define ENIC_LINK_SPEED_4G 4000
577c2ce6e6SSujith Sankar #define ENIC_LINK_40G_INDEX 2
587c2ce6e6SSujith Sankar #define ENIC_LINK_10G_INDEX 1
597c2ce6e6SSujith Sankar #define ENIC_LINK_4G_INDEX 0
607c2ce6e6SSujith Sankar #define ENIC_RX_COALESCE_RANGE_END 125
617c2ce6e6SSujith Sankar #define ENIC_AIC_TS_BREAK 100
627c2ce6e6SSujith Sankar
637c2ce6e6SSujith Sankar struct enic_rx_coal {
647c2ce6e6SSujith Sankar u32 small_pkt_range_start;
657c2ce6e6SSujith Sankar u32 large_pkt_range_start;
667c2ce6e6SSujith Sankar u32 range_end;
677c2ce6e6SSujith Sankar u32 use_adaptive_rx_coalesce;
687c2ce6e6SSujith Sankar };
697c2ce6e6SSujith Sankar
708749b427SRoopa Prabhu /* priv_flags */
718749b427SRoopa Prabhu #define ENIC_SRIOV_ENABLED (1 << 0)
728749b427SRoopa Prabhu
738749b427SRoopa Prabhu /* enic port profile set flags */
74a6a5580cSJeff Kirsher #define ENIC_PORT_REQUEST_APPLIED (1 << 0)
75a6a5580cSJeff Kirsher #define ENIC_SET_REQUEST (1 << 1)
76a6a5580cSJeff Kirsher #define ENIC_SET_NAME (1 << 2)
77a6a5580cSJeff Kirsher #define ENIC_SET_INSTANCE (1 << 3)
78a6a5580cSJeff Kirsher #define ENIC_SET_HOST (1 << 4)
79a6a5580cSJeff Kirsher
80a6a5580cSJeff Kirsher struct enic_port_profile {
81a6a5580cSJeff Kirsher u32 set;
82a6a5580cSJeff Kirsher u8 request;
83a6a5580cSJeff Kirsher char name[PORT_PROFILE_MAX];
84a6a5580cSJeff Kirsher u8 instance_uuid[PORT_UUID_MAX];
85a6a5580cSJeff Kirsher u8 host_uuid[PORT_UUID_MAX];
86a6a5580cSJeff Kirsher u8 vf_mac[ETH_ALEN];
87a6a5580cSJeff Kirsher u8 mac_addr[ETH_ALEN];
88a6a5580cSJeff Kirsher };
89a6a5580cSJeff Kirsher
90a145df23SGovindarajulu Varadarajan /* enic_rfs_fltr_node - rfs filter node in hash table
91a145df23SGovindarajulu Varadarajan * @@keys: IPv4 5 tuple
92a145df23SGovindarajulu Varadarajan * @flow_id: flow_id of clsf filter provided by kernel
93a145df23SGovindarajulu Varadarajan * @fltr_id: filter id of clsf filter returned by adaptor
94a145df23SGovindarajulu Varadarajan * @rq_id: desired rq index
95a145df23SGovindarajulu Varadarajan * @node: hlist_node
96a145df23SGovindarajulu Varadarajan */
97a145df23SGovindarajulu Varadarajan struct enic_rfs_fltr_node {
98a145df23SGovindarajulu Varadarajan struct flow_keys keys;
99a145df23SGovindarajulu Varadarajan u32 flow_id;
100a145df23SGovindarajulu Varadarajan u16 fltr_id;
101a145df23SGovindarajulu Varadarajan u16 rq_id;
102a145df23SGovindarajulu Varadarajan struct hlist_node node;
103a145df23SGovindarajulu Varadarajan };
104a145df23SGovindarajulu Varadarajan
105a145df23SGovindarajulu Varadarajan /* enic_rfs_flw_tbl - rfs flow table
106a145df23SGovindarajulu Varadarajan * @max: Maximum number of filters vNIC supports
107a145df23SGovindarajulu Varadarajan * @free: Number of free filters available
108a145df23SGovindarajulu Varadarajan * @toclean: hash table index to clean next
109a145df23SGovindarajulu Varadarajan * @ht_head: hash table list head
110a145df23SGovindarajulu Varadarajan * @lock: spin lock
111a145df23SGovindarajulu Varadarajan * @rfs_may_expire: timer function for enic_rps_may_expire_flow
112a145df23SGovindarajulu Varadarajan */
113a145df23SGovindarajulu Varadarajan struct enic_rfs_flw_tbl {
114a145df23SGovindarajulu Varadarajan u16 max;
115a145df23SGovindarajulu Varadarajan int free;
116a145df23SGovindarajulu Varadarajan
117a145df23SGovindarajulu Varadarajan #define ENIC_RFS_FLW_BITSHIFT (10)
118a145df23SGovindarajulu Varadarajan #define ENIC_RFS_FLW_MASK ((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
119a145df23SGovindarajulu Varadarajan u16 toclean:ENIC_RFS_FLW_BITSHIFT;
120a145df23SGovindarajulu Varadarajan struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
121a145df23SGovindarajulu Varadarajan spinlock_t lock;
122a145df23SGovindarajulu Varadarajan struct timer_list rfs_may_expire;
123a145df23SGovindarajulu Varadarajan };
124a145df23SGovindarajulu Varadarajan
125257e7382SGovindarajulu Varadarajan struct vxlan_offload {
126257e7382SGovindarajulu Varadarajan u16 vxlan_udp_port_number;
127257e7382SGovindarajulu Varadarajan u8 patch_level;
128d1179094SGovindarajulu Varadarajan u8 flags;
129257e7382SGovindarajulu Varadarajan };
130257e7382SGovindarajulu Varadarajan
131a6a5580cSJeff Kirsher /* Per-instance private data structure */
132a6a5580cSJeff Kirsher struct enic {
133a6a5580cSJeff Kirsher struct net_device *netdev;
134a6a5580cSJeff Kirsher struct pci_dev *pdev;
135a6a5580cSJeff Kirsher struct vnic_enet_config config;
136a6a5580cSJeff Kirsher struct vnic_dev_bar bar[ENIC_BARS_MAX];
137a6a5580cSJeff Kirsher struct vnic_dev *vdev;
138a6a5580cSJeff Kirsher struct timer_list notify_timer;
139a6a5580cSJeff Kirsher struct work_struct reset;
140937317c7SGovindarajulu Varadarajan struct work_struct tx_hang_reset;
141a6a5580cSJeff Kirsher struct work_struct change_mtu_work;
142a6a5580cSJeff Kirsher struct msix_entry msix_entry[ENIC_INTR_MAX];
143a6a5580cSJeff Kirsher struct enic_msix_entry msix[ENIC_INTR_MAX];
144a6a5580cSJeff Kirsher u32 msg_enable;
145a6a5580cSJeff Kirsher spinlock_t devcmd_lock;
146a6a5580cSJeff Kirsher u8 mac_addr[ETH_ALEN];
147a6a5580cSJeff Kirsher unsigned int flags;
1488749b427SRoopa Prabhu unsigned int priv_flags;
149a6a5580cSJeff Kirsher unsigned int mc_count;
150a6a5580cSJeff Kirsher unsigned int uc_count;
151a6a5580cSJeff Kirsher u32 port_mtu;
1527c2ce6e6SSujith Sankar struct enic_rx_coal rx_coalesce_setting;
153a6a5580cSJeff Kirsher u32 rx_coalesce_usecs;
154a6a5580cSJeff Kirsher u32 tx_coalesce_usecs;
1558749b427SRoopa Prabhu #ifdef CONFIG_PCI_IOV
156413708bbSDan Carpenter u16 num_vfs;
1578749b427SRoopa Prabhu #endif
1580b038566SNeel Patel spinlock_t enic_api_lock;
159a53b59ecSThomas Gleixner bool enic_api_busy;
1603f192795SRoopa Prabhu struct enic_port_profile *pp;
161a6a5580cSJeff Kirsher
162a6a5580cSJeff Kirsher /* work queue cache line section */
163a6a5580cSJeff Kirsher ____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
164a6a5580cSJeff Kirsher spinlock_t wq_lock[ENIC_WQ_MAX];
165a6a5580cSJeff Kirsher unsigned int wq_count;
166a6a5580cSJeff Kirsher u16 loop_enable;
167a6a5580cSJeff Kirsher u16 loop_tag;
168a6a5580cSJeff Kirsher
169a6a5580cSJeff Kirsher /* receive queue cache line section */
170a6a5580cSJeff Kirsher ____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX];
171a6a5580cSJeff Kirsher unsigned int rq_count;
172257e7382SGovindarajulu Varadarajan struct vxlan_offload vxlan;
173a6a5580cSJeff Kirsher u64 rq_truncated_pkts;
174a6a5580cSJeff Kirsher u64 rq_bad_fcs;
1754cfe8785SGovindarajulu Varadarajan struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];
176a6a5580cSJeff Kirsher
177a6a5580cSJeff Kirsher /* interrupt resource cache line section */
178a6a5580cSJeff Kirsher ____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
179a6a5580cSJeff Kirsher unsigned int intr_count;
180a6a5580cSJeff Kirsher u32 __iomem *legacy_pba; /* memory-mapped */
181a6a5580cSJeff Kirsher
182a6a5580cSJeff Kirsher /* completion queue cache line section */
183a6a5580cSJeff Kirsher ____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
184a6a5580cSJeff Kirsher unsigned int cq_count;
185a145df23SGovindarajulu Varadarajan struct enic_rfs_flw_tbl rfs_h;
186a03bb56eSGovindarajulu Varadarajan u32 rx_copybreak;
1874f675eb2SGovindarajulu Varadarajan u8 rss_key[ENIC_RSS_LEN];
18858feff07SGovindarajulu Varadarajan struct vnic_gen_stats gen_stats;
189a6a5580cSJeff Kirsher };
190a6a5580cSJeff Kirsher
vnic_get_netdev(struct vnic_dev * vdev)1916a3c2f83SGovindarajulu Varadarajan static inline struct net_device *vnic_get_netdev(struct vnic_dev *vdev)
1926a3c2f83SGovindarajulu Varadarajan {
1936a3c2f83SGovindarajulu Varadarajan struct enic *enic = vdev->priv;
1946a3c2f83SGovindarajulu Varadarajan
1956a3c2f83SGovindarajulu Varadarajan return enic->netdev;
1966a3c2f83SGovindarajulu Varadarajan }
1976a3c2f83SGovindarajulu Varadarajan
1986a3c2f83SGovindarajulu Varadarajan /* wrappers function for kernel log
1996a3c2f83SGovindarajulu Varadarajan */
200e327f4e1SJoe Perches #define vdev_err(vdev, fmt, ...) \
201e327f4e1SJoe Perches dev_err(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
202e327f4e1SJoe Perches #define vdev_warn(vdev, fmt, ...) \
203e327f4e1SJoe Perches dev_warn(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
204e327f4e1SJoe Perches #define vdev_info(vdev, fmt, ...) \
205e327f4e1SJoe Perches dev_info(&(vdev)->pdev->dev, fmt, ##__VA_ARGS__)
2066a3c2f83SGovindarajulu Varadarajan
207e327f4e1SJoe Perches #define vdev_neterr(vdev, fmt, ...) \
208e327f4e1SJoe Perches netdev_err(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
209e327f4e1SJoe Perches #define vdev_netwarn(vdev, fmt, ...) \
210e327f4e1SJoe Perches netdev_warn(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
211e327f4e1SJoe Perches #define vdev_netinfo(vdev, fmt, ...) \
212e327f4e1SJoe Perches netdev_info(vnic_get_netdev(vdev), fmt, ##__VA_ARGS__)
2136a3c2f83SGovindarajulu Varadarajan
enic_get_dev(struct enic * enic)214a6a5580cSJeff Kirsher static inline struct device *enic_get_dev(struct enic *enic)
215a6a5580cSJeff Kirsher {
216a6a5580cSJeff Kirsher return &(enic->pdev->dev);
217a6a5580cSJeff Kirsher }
218a6a5580cSJeff Kirsher
enic_cq_rq(struct enic * enic,unsigned int rq)219f13bbc2fSNeel Patel static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq)
220f13bbc2fSNeel Patel {
221f13bbc2fSNeel Patel return rq;
222f13bbc2fSNeel Patel }
223f13bbc2fSNeel Patel
enic_cq_wq(struct enic * enic,unsigned int wq)224f13bbc2fSNeel Patel static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
225f13bbc2fSNeel Patel {
226f13bbc2fSNeel Patel return enic->rq_count + wq;
227f13bbc2fSNeel Patel }
228f13bbc2fSNeel Patel
enic_msix_rq_intr(struct enic * enic,unsigned int rq)229f13bbc2fSNeel Patel static inline unsigned int enic_msix_rq_intr(struct enic *enic,
230f13bbc2fSNeel Patel unsigned int rq)
231f13bbc2fSNeel Patel {
232f13bbc2fSNeel Patel return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
233f13bbc2fSNeel Patel }
234f13bbc2fSNeel Patel
enic_msix_wq_intr(struct enic * enic,unsigned int wq)235f13bbc2fSNeel Patel static inline unsigned int enic_msix_wq_intr(struct enic *enic,
236f13bbc2fSNeel Patel unsigned int wq)
237f13bbc2fSNeel Patel {
238f13bbc2fSNeel Patel return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
239f13bbc2fSNeel Patel }
240f13bbc2fSNeel Patel
enic_msix_err_intr(struct enic * enic)241f13bbc2fSNeel Patel static inline unsigned int enic_msix_err_intr(struct enic *enic)
242f13bbc2fSNeel Patel {
243f13bbc2fSNeel Patel return enic->rq_count + enic->wq_count;
244f13bbc2fSNeel Patel }
245f13bbc2fSNeel Patel
246*e2ac2a00SGovindarajulu Varadarajan #define ENIC_LEGACY_IO_INTR 0
247*e2ac2a00SGovindarajulu Varadarajan #define ENIC_LEGACY_ERR_INTR 1
248*e2ac2a00SGovindarajulu Varadarajan #define ENIC_LEGACY_NOTIFY_INTR 2
249*e2ac2a00SGovindarajulu Varadarajan
enic_msix_notify_intr(struct enic * enic)250f13bbc2fSNeel Patel static inline unsigned int enic_msix_notify_intr(struct enic *enic)
251f13bbc2fSNeel Patel {
252f13bbc2fSNeel Patel return enic->rq_count + enic->wq_count + 1;
253f13bbc2fSNeel Patel }
254f13bbc2fSNeel Patel
enic_is_err_intr(struct enic * enic,int intr)255322cf7e3SGovindarajulu Varadarajan static inline bool enic_is_err_intr(struct enic *enic, int intr)
256322cf7e3SGovindarajulu Varadarajan {
257322cf7e3SGovindarajulu Varadarajan switch (vnic_dev_get_intr_mode(enic->vdev)) {
258322cf7e3SGovindarajulu Varadarajan case VNIC_DEV_INTR_MODE_INTX:
259*e2ac2a00SGovindarajulu Varadarajan return intr == ENIC_LEGACY_ERR_INTR;
260322cf7e3SGovindarajulu Varadarajan case VNIC_DEV_INTR_MODE_MSIX:
261322cf7e3SGovindarajulu Varadarajan return intr == enic_msix_err_intr(enic);
262322cf7e3SGovindarajulu Varadarajan case VNIC_DEV_INTR_MODE_MSI:
263322cf7e3SGovindarajulu Varadarajan default:
264322cf7e3SGovindarajulu Varadarajan return false;
265322cf7e3SGovindarajulu Varadarajan }
266322cf7e3SGovindarajulu Varadarajan }
267322cf7e3SGovindarajulu Varadarajan
enic_is_notify_intr(struct enic * enic,int intr)268322cf7e3SGovindarajulu Varadarajan static inline bool enic_is_notify_intr(struct enic *enic, int intr)
269322cf7e3SGovindarajulu Varadarajan {
270322cf7e3SGovindarajulu Varadarajan switch (vnic_dev_get_intr_mode(enic->vdev)) {
271322cf7e3SGovindarajulu Varadarajan case VNIC_DEV_INTR_MODE_INTX:
272*e2ac2a00SGovindarajulu Varadarajan return intr == ENIC_LEGACY_NOTIFY_INTR;
273322cf7e3SGovindarajulu Varadarajan case VNIC_DEV_INTR_MODE_MSIX:
274322cf7e3SGovindarajulu Varadarajan return intr == enic_msix_notify_intr(enic);
275322cf7e3SGovindarajulu Varadarajan case VNIC_DEV_INTR_MODE_MSI:
276322cf7e3SGovindarajulu Varadarajan default:
277322cf7e3SGovindarajulu Varadarajan return false;
278322cf7e3SGovindarajulu Varadarajan }
279322cf7e3SGovindarajulu Varadarajan }
280322cf7e3SGovindarajulu Varadarajan
enic_dma_map_check(struct enic * enic,dma_addr_t dma_addr)281065df159SGovindarajulu Varadarajan static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr)
282065df159SGovindarajulu Varadarajan {
28360c33202SChristophe JAILLET if (unlikely(dma_mapping_error(&enic->pdev->dev, dma_addr))) {
284065df159SGovindarajulu Varadarajan net_warn_ratelimited("%s: PCI dma mapping failed!\n",
285065df159SGovindarajulu Varadarajan enic->netdev->name);
28658feff07SGovindarajulu Varadarajan enic->gen_stats.dma_map_error++;
287065df159SGovindarajulu Varadarajan
288065df159SGovindarajulu Varadarajan return -ENOMEM;
289065df159SGovindarajulu Varadarajan }
290065df159SGovindarajulu Varadarajan
291065df159SGovindarajulu Varadarajan return 0;
292065df159SGovindarajulu Varadarajan }
293065df159SGovindarajulu Varadarajan
294a6a5580cSJeff Kirsher void enic_reset_addr_lists(struct enic *enic);
2958749b427SRoopa Prabhu int enic_sriov_enabled(struct enic *enic);
296889d13f5SRoopa Prabhu int enic_is_valid_vf(struct enic *enic, int vf);
2973f192795SRoopa Prabhu int enic_is_dynamic(struct enic *enic);
298f13bbc2fSNeel Patel void enic_set_ethtool_ops(struct net_device *netdev);
2994f675eb2SGovindarajulu Varadarajan int __enic_set_rsskey(struct enic *enic);
300a6a5580cSJeff Kirsher
301a6a5580cSJeff Kirsher #endif /* _ENIC_H_ */
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