1 /* 2 * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. 3 * Copyright 2007 Nuova Systems, Inc. All rights reserved. 4 * 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. 8 * 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 16 * SOFTWARE. 17 * 18 */ 19 20 #ifndef _ENIC_H_ 21 #define _ENIC_H_ 22 23 #include "vnic_enet.h" 24 #include "vnic_dev.h" 25 #include "vnic_wq.h" 26 #include "vnic_rq.h" 27 #include "vnic_cq.h" 28 #include "vnic_intr.h" 29 #include "vnic_stats.h" 30 #include "vnic_nic.h" 31 #include "vnic_rss.h" 32 #include <linux/irq.h> 33 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" 38 39 #define ENIC_BARS_MAX 6 40 41 #define ENIC_WQ_MAX 8 42 #define ENIC_RQ_MAX 8 43 #define ENIC_CQ_MAX (ENIC_WQ_MAX + ENIC_RQ_MAX) 44 #define ENIC_INTR_MAX (ENIC_CQ_MAX + 2) 45 46 #define ENIC_AIC_LARGE_PKT_DIFF 3 47 48 struct enic_msix_entry { 49 int requested; 50 char devname[IFNAMSIZ]; 51 irqreturn_t (*isr)(int, void *); 52 void *devid; 53 }; 54 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; 59 }; 60 61 struct enic_intr_mod_table { 62 u32 rx_rate; 63 u32 range_percent; 64 }; 65 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 74 75 struct enic_rx_coal { 76 u32 small_pkt_range_start; 77 u32 large_pkt_range_start; 78 u32 range_end; 79 u32 use_adaptive_rx_coalesce; 80 }; 81 82 /* priv_flags */ 83 #define ENIC_SRIOV_ENABLED (1 << 0) 84 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) 91 92 struct enic_port_profile { 93 u32 set; 94 u8 request; 95 char name[PORT_PROFILE_MAX]; 96 u8 instance_uuid[PORT_UUID_MAX]; 97 u8 host_uuid[PORT_UUID_MAX]; 98 u8 vf_mac[ETH_ALEN]; 99 u8 mac_addr[ETH_ALEN]; 100 }; 101 102 /* 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 107 * @node: hlist_node 108 */ 109 struct enic_rfs_fltr_node { 110 struct flow_keys keys; 111 u32 flow_id; 112 u16 fltr_id; 113 u16 rq_id; 114 struct hlist_node node; 115 }; 116 117 /* 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 122 * @lock: spin lock 123 * @rfs_may_expire: timer function for enic_rps_may_expire_flow 124 */ 125 struct enic_rfs_flw_tbl { 126 u16 max; 127 int free; 128 129 #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]; 133 spinlock_t lock; 134 struct timer_list rfs_may_expire; 135 }; 136 137 /* Per-instance private data structure */ 138 struct enic { 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]; 150 u32 msg_enable; 151 spinlock_t devcmd_lock; 152 u8 mac_addr[ETH_ALEN]; 153 unsigned int flags; 154 unsigned int priv_flags; 155 unsigned int mc_count; 156 unsigned int uc_count; 157 u32 port_mtu; 158 struct enic_rx_coal rx_coalesce_setting; 159 u32 rx_coalesce_usecs; 160 u32 tx_coalesce_usecs; 161 #ifdef CONFIG_PCI_IOV 162 u16 num_vfs; 163 #endif 164 spinlock_t enic_api_lock; 165 struct enic_port_profile *pp; 166 167 /* 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; 171 u16 loop_enable; 172 u16 loop_tag; 173 174 /* 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; 178 u64 rq_bad_fcs; 179 struct napi_struct napi[ENIC_RQ_MAX + ENIC_WQ_MAX]; 180 181 /* 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 */ 185 186 /* 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; 190 u32 rx_copybreak; 191 u8 rss_key[ENIC_RSS_LEN]; 192 struct vnic_gen_stats gen_stats; 193 }; 194 195 static inline struct net_device *vnic_get_netdev(struct vnic_dev *vdev) 196 { 197 struct enic *enic = vdev->priv; 198 199 return enic->netdev; 200 } 201 202 /* 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 205 */ 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) 209 210 #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) 213 214 static inline struct device *enic_get_dev(struct enic *enic) 215 { 216 return &(enic->pdev->dev); 217 } 218 219 static inline unsigned int enic_cq_rq(struct enic *enic, unsigned int rq) 220 { 221 return rq; 222 } 223 224 static inline unsigned int enic_cq_wq(struct enic *enic, unsigned int wq) 225 { 226 return enic->rq_count + wq; 227 } 228 229 static inline unsigned int enic_legacy_io_intr(void) 230 { 231 return 0; 232 } 233 234 static inline unsigned int enic_legacy_err_intr(void) 235 { 236 return 1; 237 } 238 239 static inline unsigned int enic_legacy_notify_intr(void) 240 { 241 return 2; 242 } 243 244 static inline unsigned int enic_msix_rq_intr(struct enic *enic, 245 unsigned int rq) 246 { 247 return enic->cq[enic_cq_rq(enic, rq)].interrupt_offset; 248 } 249 250 static inline unsigned int enic_msix_wq_intr(struct enic *enic, 251 unsigned int wq) 252 { 253 return enic->cq[enic_cq_wq(enic, wq)].interrupt_offset; 254 } 255 256 static inline unsigned int enic_msix_err_intr(struct enic *enic) 257 { 258 return enic->rq_count + enic->wq_count; 259 } 260 261 static inline unsigned int enic_msix_notify_intr(struct enic *enic) 262 { 263 return enic->rq_count + enic->wq_count + 1; 264 } 265 266 static inline int enic_dma_map_check(struct enic *enic, dma_addr_t dma_addr) 267 { 268 if (unlikely(pci_dma_mapping_error(enic->pdev, dma_addr))) { 269 net_warn_ratelimited("%s: PCI dma mapping failed!\n", 270 enic->netdev->name); 271 enic->gen_stats.dma_map_error++; 272 273 return -ENOMEM; 274 } 275 276 return 0; 277 } 278 279 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); 285 286 #endif /* _ENIC_H_ */ 287