2 * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved.
3 * Copyright 2007 Nuova Systems, Inc. All rights reserved.
5 * This program is free software; you may redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; version 2 of the License.
9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
10 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
11 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
12 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
13 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
14 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
15 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 #include "vnic_enet.h"
28 #include "vnic_intr.h"
29 #include "vnic_stats.h"
32 #include <linux/irq.h>
34 #define DRV_NAME "enic"
35 #define DRV_DESCRIPTION "Cisco VIC Ethernet NIC Driver"
36 #define DRV_VERSION "2.3.0.12"
37 #define DRV_COPYRIGHT "Copyright 2008-2013 Cisco Systems, Inc"
39 #define ENIC_BARS_MAX 6
43 #define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX)
44 #define ENIC_INTR_MAX (ENIC_CQ_MAX + 2)
46 #define ENIC_AIC_LARGE_PKT_DIFF 3
48 struct enic_msix_entry {
50 char devname[IFNAMSIZ];
51 irqreturn_t (*isr)(int, void *);
55 /* Store only the lower range. Higher range is given by fw. */
56 struct enic_intr_mod_range {
57 u32 small_pkt_range_start;
58 u32 large_pkt_range_start;
61 struct enic_intr_mod_table {
66 #define ENIC_MAX_LINK_SPEEDS 3
67 #define ENIC_LINK_SPEED_10G 10000
68 #define ENIC_LINK_SPEED_4G 4000
69 #define ENIC_LINK_40G_INDEX 2
70 #define ENIC_LINK_10G_INDEX 1
71 #define ENIC_LINK_4G_INDEX 0
72 #define ENIC_RX_COALESCE_RANGE_END 125
73 #define ENIC_AIC_TS_BREAK 100
76 u32 small_pkt_range_start;
77 u32 large_pkt_range_start;
79 u32 use_adaptive_rx_coalesce;
83 #define ENIC_SRIOV_ENABLED (1 << 0)
85 /* enic port profile set flags */
86 #define ENIC_PORT_REQUEST_APPLIED (1 << 0)
87 #define ENIC_SET_REQUEST (1 << 1)
88 #define ENIC_SET_NAME (1 << 2)
89 #define ENIC_SET_INSTANCE (1 << 3)
90 #define ENIC_SET_HOST (1 << 4)
92 struct enic_port_profile {
95 char name[PORT_PROFILE_MAX];
96 u8 instance_uuid[PORT_UUID_MAX];
97 u8 host_uuid[PORT_UUID_MAX];
99 u8 mac_addr[ETH_ALEN];
102 /* enic_rfs_fltr_node - rfs filter node in hash table
103 * @@keys: IPv4 5 tuple
104 * @flow_id: flow_id of clsf filter provided by kernel
105 * @fltr_id: filter id of clsf filter returned by adaptor
106 * @rq_id: desired rq index
109 struct enic_rfs_fltr_node {
110 struct flow_keys keys;
114 struct hlist_node node;
117 /* enic_rfs_flw_tbl - rfs flow table
118 * @max: Maximum number of filters vNIC supports
119 * @free: Number of free filters available
120 * @toclean: hash table index to clean next
121 * @ht_head: hash table list head
123 * @rfs_may_expire: timer function for enic_rps_may_expire_flow
125 struct enic_rfs_flw_tbl {
129 #define ENIC_RFS_FLW_BITSHIFT (10)
130 #define ENIC_RFS_FLW_MASK ((1 << ENIC_RFS_FLW_BITSHIFT) - 1)
131 u16 toclean:ENIC_RFS_FLW_BITSHIFT;
132 struct hlist_head ht_head[1 << ENIC_RFS_FLW_BITSHIFT];
134 struct timer_list rfs_may_expire;
137 /* Per-instance private data structure */
139 struct net_device *netdev;
140 struct pci_dev *pdev;
141 struct vnic_enet_config config;
142 struct vnic_dev_bar bar[ENIC_BARS_MAX];
143 struct vnic_dev *vdev;
144 struct timer_list notify_timer;
145 struct work_struct reset;
146 struct work_struct tx_hang_reset;
147 struct work_struct change_mtu_work;
148 struct msix_entry msix_entry[ENIC_INTR_MAX];
149 struct enic_msix_entry msix[ENIC_INTR_MAX];
151 spinlock_t devcmd_lock;
152 u8 mac_addr[ETH_ALEN];
154 unsigned int priv_flags;
155 unsigned int mc_count;
156 unsigned int uc_count;
158 struct enic_rx_coal rx_coalesce_setting;
159 u32 rx_coalesce_usecs;
160 u32 tx_coalesce_usecs;
161 #ifdef CONFIG_PCI_IOV
164 spinlock_t enic_api_lock;
165 struct enic_port_profile *pp;
167 /* work queue cache line section */
168 ____cacheline_aligned struct vnic_wq wq[ENIC_WQ_MAX];
169 spinlock_t wq_lock[ENIC_WQ_MAX];
170 unsigned int wq_count;
174 /* receive queue cache line section */
175 ____cacheline_aligned struct vnic_rq rq[ENIC_RQ_MAX];
176 unsigned int rq_count;
177 u64 rq_truncated_pkts;
179 struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX];
181 /* interrupt resource cache line section */
182 ____cacheline_aligned struct vnic_intr intr[ENIC_INTR_MAX];
183 unsigned int intr_count;
184 u32 __iomem *legacy_pba; /* memory-mapped */
186 /* completion queue cache line section */
187 ____cacheline_aligned struct vnic_cq cq[ENIC_CQ_MAX];
188 unsigned int cq_count;
189 struct enic_rfs_flw_tbl rfs_h;
191 u8 rss_key[ENIC_RSS_LEN];
192 struct vnic_gen_stats gen_stats;
195 static inline struct net_device *vnic_get_netdev(struct vnic_dev *vdev)
197 struct enic *enic = vdev->priv;
202 /* wrappers function for kernel log
203 * Make sure variable vdev of struct vnic_dev is available in the block where
204 * these macros are used
206 #define vdev_info(args...) dev_info(&vdev->pdev->dev, args)
207 #define vdev_warn(args...) dev_warn(&vdev->pdev->dev, args)
208 #define vdev_err(args...) dev_err(&vdev->pdev->dev, args)
210 #define vdev_netinfo(args...) netdev_info(vnic_get_netdev(vdev), args)
211 #define vdev_netwarn(args...) netdev_warn(vnic_get_netdev(vdev), args)
212 #define vdev_neterr(args...) netdev_err(vnic_get_netdev(vdev), args)
214 static inline struct device *enic_get_dev(struct enic *enic)
216 return &(enic->pdev->dev);
219 static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq)
224 static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq)
226 return enic->rq_count + wq;
229 static inline unsigned int enic_legacy_io_intr(void)
234 static inline unsigned int enic_legacy_err_intr(void)
239 static inline unsigned int enic_legacy_notify_intr(void)
244 static inline unsigned int enic_msix_rq_intr(struct enic *enic,
247 return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset;
250 static inline unsigned int enic_msix_wq_intr(struct enic *enic,
253 return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset;
256 static inline unsigned int enic_msix_err_intr(struct enic *enic)
258 return enic->rq_count + enic->wq_count;
261 static inline unsigned int enic_msix_notify_intr(struct enic *enic)
263 return enic->rq_count + enic->wq_count + 1;
266 static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr)
268 if (unlikely(pci_dma_mapping_error(enic->pdev, dma_addr))) {
269 net_warn_ratelimited("%s: PCI dma mapping failed!\n",
271 enic->gen_stats.dma_map_error++;
279 void enic_reset_addr_lists(struct enic *enic);
280 int enic_sriov_enabled(struct enic *enic);
281 int enic_is_valid_vf(struct enic *enic, int vf);
282 int enic_is_dynamic(struct enic *enic);
283 void enic_set_ethtool_ops(struct net_device *netdev);
284 int __enic_set_rsskey(struct enic *enic);
286 #endif /* _ENIC_H_ */