drivers/net/benet/be.h

   1 /*
   2  * Copyright (C) 2005 - 2011 Emulex
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License version 2
   7  * as published by the Free Software Foundation.  The full GNU General
   8  * Public License is included in this distribution in the file called COPYING.
   9  *
  10  * Contact Information:
  11  * linux-drivers@emulex.com
  12  *
  13  * Emulex
  14  * 3333 Susan Street
  15  * Costa Mesa, CA 92626
  16  */
  17
  18 #ifndef BE_H
  19 #define BE_H
  20
  21 #include <linux/pci.h>
  22 #include <linux/etherdevice.h>
  23 #include <linux/version.h>
  24 #include <linux/delay.h>
  25 #include <net/tcp.h>
  26 #include <net/ip.h>
  27 #include <net/ipv6.h>
  28 #include <linux/if_vlan.h>
  29 #include <linux/workqueue.h>
  30 #include <linux/interrupt.h>
  31 #include <linux/firmware.h>
  32 #include <linux/slab.h>
  33
  34 #include "be_hw.h"
  35
  36 #define DRV_VER                 "4.0.100u"
  37 #define DRV_NAME                "be2net"
  38 #define BE_NAME                 "ServerEngines BladeEngine2 10Gbps NIC"
  39 #define BE3_NAME                "ServerEngines BladeEngine3 10Gbps NIC"
  40 #define OC_NAME                 "Emulex OneConnect 10Gbps NIC"
  41 #define OC_NAME_BE              OC_NAME "(be3)"
  42 #define OC_NAME_LANCER          OC_NAME "(Lancer)"
  43 #define DRV_DESC                "ServerEngines BladeEngine 10Gbps NIC Driver"
  44
  45 #define BE_VENDOR_ID            0x19a2
  46 #define EMULEX_VENDOR_ID        0x10df
  47 #define BE_DEVICE_ID1           0x211
  48 #define BE_DEVICE_ID2           0x221
  49 #define OC_DEVICE_ID1           0x700   /* Device Id for BE2 cards */
  50 #define OC_DEVICE_ID2           0x710   /* Device Id for BE3 cards */
  51 #define OC_DEVICE_ID3           0xe220  /* Device id for Lancer cards */
  52
  53 static inline char *nic_name(struct pci_dev *pdev)
  54 {
  55         switch (pdev->device) {
  56         case OC_DEVICE_ID1:
  57                 return OC_NAME;
  58         case OC_DEVICE_ID2:
  59                 return OC_NAME_BE;
  60         case OC_DEVICE_ID3:
  61                 return OC_NAME_LANCER;
  62         case BE_DEVICE_ID2:
  63                 return BE3_NAME;
  64         default:
  65                 return BE_NAME;
  66         }
  67 }
  68
  69 /* Number of bytes of an RX frame that are copied to skb->data */
  70 #define BE_HDR_LEN              ((u16) 64)
  71 #define BE_MAX_JUMBO_FRAME_SIZE 9018
  72 #define BE_MIN_MTU              256
  73
  74 #define BE_NUM_VLANS_SUPPORTED  64
  75 #define BE_MAX_EQD              96
  76 #define BE_MAX_TX_FRAG_COUNT    30
  77
  78 #define EVNT_Q_LEN              1024
  79 #define TX_Q_LEN                2048
  80 #define TX_CQ_LEN               1024
  81 #define RX_Q_LEN                1024    /* Does not support any other value */
  82 #define RX_CQ_LEN               1024
  83 #define MCC_Q_LEN               128     /* total size not to exceed 8 pages */
  84 #define MCC_CQ_LEN              256
  85
  86 #define MAX_RSS_QS              4       /* BE limit is 4 queues/port */
  87 #define MAX_RX_QS               (MAX_RSS_QS + 1) /* RSS qs + 1 def Rx */
  88 #define BE_MAX_MSIX_VECTORS     (MAX_RX_QS + 1)/* RX + TX */
  89 #define BE_NAPI_WEIGHT          64
  90 #define MAX_RX_POST             BE_NAPI_WEIGHT /* Frags posted at a time */
  91 #define RX_FRAGS_REFILL_WM      (RX_Q_LEN - MAX_RX_POST)
  92
  93 #define FW_VER_LEN              32
  94
  95 #define BE_MAX_VF               32
  96
  97 struct be_dma_mem {
  98         void *va;
  99         dma_addr_t dma;
 100         u32 size;
 101 };
 102
 103 struct be_queue_info {
 104         struct be_dma_mem dma_mem;
 105         u16 len;
 106         u16 entry_size; /* Size of an element in the queue */
 107         u16 id;
 108         u16 tail, head;
 109         bool created;
 110         atomic_t used;  /* Number of valid elements in the queue */
 111 };
 112
 113 static inline u32 MODULO(u16 val, u16 limit)
 114 {
 115         BUG_ON(limit & (limit - 1));
 116         return val & (limit - 1);
 117 }
 118
 119 static inline void index_adv(u16 *index, u16 val, u16 limit)
 120 {
 121         *index = MODULO((*index + val), limit);
 122 }
 123
 124 static inline void index_inc(u16 *index, u16 limit)
 125 {
 126         *index = MODULO((*index + 1), limit);
 127 }
 128
 129 static inline void *queue_head_node(struct be_queue_info *q)
 130 {
 131         return q->dma_mem.va + q->head * q->entry_size;
 132 }
 133
 134 static inline void *queue_tail_node(struct be_queue_info *q)
 135 {
 136         return q->dma_mem.va + q->tail * q->entry_size;
 137 }
 138
 139 static inline void queue_head_inc(struct be_queue_info *q)
 140 {
 141         index_inc(&q->head, q->len);
 142 }
 143
 144 static inline void queue_tail_inc(struct be_queue_info *q)
 145 {
 146         index_inc(&q->tail, q->len);
 147 }
 148
 149 struct be_eq_obj {
 150         struct be_queue_info q;
 151         char desc[32];
 152
 153         /* Adaptive interrupt coalescing (AIC) info */
 154         bool enable_aic;
 155         u16 min_eqd;            /* in usecs */
 156         u16 max_eqd;            /* in usecs */
 157         u16 cur_eqd;            /* in usecs */
 158         u8  eq_idx;
 159
 160         struct napi_struct napi;
 161 };
 162
 163 struct be_mcc_obj {
 164         struct be_queue_info q;
 165         struct be_queue_info cq;
 166         bool rearm_cq;
 167 };
 168
 169 struct be_tx_stats {
 170         u32 be_tx_reqs;         /* number of TX requests initiated */
 171         u32 be_tx_stops;        /* number of times TX Q was stopped */
 172         u32 be_tx_wrbs;         /* number of tx WRBs used */
 173         u32 be_tx_events;       /* number of tx completion events  */
 174         u32 be_tx_compl;        /* number of tx completion entries processed */
 175         ulong be_tx_jiffies;
 176         u64 be_tx_bytes;
 177         u64 be_tx_bytes_prev;
 178         u64 be_tx_pkts;
 179         u32 be_tx_rate;
 180 };
 181
 182 struct be_tx_obj {
 183         struct be_queue_info q;
 184         struct be_queue_info cq;
 185         /* Remember the skbs that were transmitted */
 186         struct sk_buff *sent_skb_list[TX_Q_LEN];
 187 };
 188
 189 /* Struct to remember the pages posted for rx frags */
 190 struct be_rx_page_info {
 191         struct page *page;
 192         DEFINE_DMA_UNMAP_ADDR(bus);
 193         u16 page_offset;
 194         bool last_page_user;
 195 };
 196
 197 struct be_rx_stats {
 198         u32 rx_post_fail;/* number of ethrx buffer alloc failures */
 199         u32 rx_polls;   /* number of times NAPI called poll function */
 200         u32 rx_events;  /* number of ucast rx completion events  */
 201         u32 rx_compl;   /* number of rx completion entries processed */
 202         ulong rx_jiffies;
 203         u64 rx_bytes;
 204         u64 rx_bytes_prev;
 205         u64 rx_pkts;
 206         u32 rx_rate;
 207         u32 rx_mcast_pkts;
 208         u32 rxcp_err;   /* Num rx completion entries w/ err set. */
 209         ulong rx_fps_jiffies;   /* jiffies at last FPS calc */
 210         u32 rx_frags;
 211         u32 prev_rx_frags;
 212         u32 rx_fps;             /* Rx frags per second */
 213 };
 214
 215 struct be_rx_compl_info {
 216         u32 rss_hash;
 217         u16 vid;
 218         u16 pkt_size;
 219         u16 rxq_idx;
 220         u16 mac_id;
 221         u8 vlanf;
 222         u8 num_rcvd;
 223         u8 err;
 224         u8 ipf;
 225         u8 tcpf;
 226         u8 udpf;
 227         u8 ip_csum;
 228         u8 l4_csum;
 229         u8 ipv6;
 230         u8 vtm;
 231         u8 pkt_type;
 232 };
 233
 234 struct be_rx_obj {
 235         struct be_adapter *adapter;
 236         struct be_queue_info q;
 237         struct be_queue_info cq;
 238         struct be_rx_compl_info rxcp;
 239         struct be_rx_page_info page_info_tbl[RX_Q_LEN];
 240         struct be_eq_obj rx_eq;
 241         struct be_rx_stats stats;
 242         u8 rss_id;
 243         bool rx_post_starved;   /* Zero rx frags have been posted to BE */
 244         u32 cache_line_barrier[16];
 245 };
 246
 247 struct be_drv_stats {
 248         u8 be_on_die_temperature;
 249 };
 250
 251 struct be_vf_cfg {
 252         unsigned char vf_mac_addr[ETH_ALEN];
 253         u32 vf_if_handle;
 254         u32 vf_pmac_id;
 255         u16 vf_vlan_tag;
 256         u32 vf_tx_rate;
 257 };
 258
 259 #define BE_INVALID_PMAC_ID              0xffffffff
 260
 261 struct be_adapter {
 262         struct pci_dev *pdev;
 263         struct net_device *netdev;
 264
 265         u8 __iomem *csr;
 266         u8 __iomem *db;         /* Door Bell */
 267         u8 __iomem *pcicfg;     /* PCI config space */
 268
 269         struct mutex mbox_lock; /* For serializing mbox cmds to BE card */
 270         struct be_dma_mem mbox_mem;
 271         /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
 272          * is stored for freeing purpose */
 273         struct be_dma_mem mbox_mem_alloced;
 274
 275         struct be_mcc_obj mcc_obj;
 276         spinlock_t mcc_lock;    /* For serializing mcc cmds to BE card */
 277         spinlock_t mcc_cq_lock;
 278
 279         struct msix_entry msix_entries[BE_MAX_MSIX_VECTORS];
 280         u32 num_msix_vec;
 281         bool isr_registered;
 282
 283         /* TX Rings */
 284         struct be_eq_obj tx_eq;
 285         struct be_tx_obj tx_obj;
 286         struct be_tx_stats tx_stats;
 287
 288         u32 cache_line_break[8];
 289
 290         /* Rx rings */
 291         struct be_rx_obj rx_obj[MAX_RX_QS];
 292         u32 num_rx_qs;
 293         u32 big_page_size;      /* Compounded page size shared by rx wrbs */
 294
 295         u8 eq_next_idx;
 296         struct be_drv_stats drv_stats;
 297
 298         struct vlan_group *vlan_grp;
 299         u16 vlans_added;
 300         u16 max_vlans;  /* Number of vlans supported */
 301         u8 vlan_tag[VLAN_N_VID];
 302         u8 vlan_prio_bmap;      /* Available Priority BitMap */
 303         u16 recommended_prio;   /* Recommended Priority */
 304         struct be_dma_mem mc_cmd_mem;
 305
 306         struct be_dma_mem stats_cmd;
 307         /* Work queue used to perform periodic tasks like getting statistics */
 308         struct delayed_work work;
 309         u16 work_counter;
 310
 311         /* Ethtool knobs and info */
 312         bool rx_csum;           /* BE card must perform rx-checksumming */
 313         char fw_ver[FW_VER_LEN];
 314         u32 if_handle;          /* Used to configure filtering */
 315         u32 pmac_id;            /* MAC addr handle used by BE card */
 316         u32 beacon_state;       /* for set_phys_id */
 317
 318         bool eeh_err;
 319         bool link_up;
 320         u32 port_num;
 321         bool promiscuous;
 322         bool wol;
 323         u32 function_mode;
 324         u32 function_caps;
 325         u32 rx_fc;              /* Rx flow control */
 326         u32 tx_fc;              /* Tx flow control */
 327         bool ue_detected;
 328         bool stats_cmd_sent;
 329         int link_speed;
 330         u8 port_type;
 331         u8 transceiver;
 332         u8 autoneg;
 333         u8 generation;          /* BladeEngine ASIC generation */
 334         u32 flash_status;
 335         struct completion flash_compl;
 336
 337         bool be3_native;
 338         bool sriov_enabled;
 339         struct be_vf_cfg vf_cfg[BE_MAX_VF];
 340         u8 is_virtfn;
 341         u32 sli_family;
 342         u8 hba_port_num;
 343         u16 pvid;
 344 };
 345
 346 #define be_physfn(adapter) (!adapter->is_virtfn)
 347
 348 /* BladeEngine Generation numbers */
 349 #define BE_GEN2 2
 350 #define BE_GEN3 3
 351
 352 #define lancer_chip(adapter)            (adapter->pdev->device == OC_DEVICE_ID3)
 353
 354 extern const struct ethtool_ops be_ethtool_ops;
 355
 356 #define msix_enabled(adapter)           (adapter->num_msix_vec > 0)
 357 #define tx_stats(adapter)               (&adapter->tx_stats)
 358 #define rx_stats(rxo)                   (&rxo->stats)
 359
 360 #define BE_SET_NETDEV_OPS(netdev, ops)  (netdev->netdev_ops = ops)
 361
 362 #define for_all_rx_queues(adapter, rxo, i)                              \
 363         for (i = 0, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs;  \
 364                 i++, rxo++)
 365
 366 /* Just skip the first default non-rss queue */
 367 #define for_all_rss_queues(adapter, rxo, i)                             \
 368         for (i = 0, rxo = &adapter->rx_obj[i+1]; i < (adapter->num_rx_qs - 1);\
 369                 i++, rxo++)
 370
 371 #define PAGE_SHIFT_4K           12
 372 #define PAGE_SIZE_4K            (1 << PAGE_SHIFT_4K)
 373
 374 /* Returns number of pages spanned by the data starting at the given addr */
 375 #define PAGES_4K_SPANNED(_address, size)                                \
 376                 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) +     \
 377                         (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
 378
 379 /* Byte offset into the page corresponding to given address */
 380 #define OFFSET_IN_PAGE(addr)                                            \
 381                  ((size_t)(addr) & (PAGE_SIZE_4K-1))
 382
 383 /* Returns bit offset within a DWORD of a bitfield */
 384 #define AMAP_BIT_OFFSET(_struct, field)                                 \
 385                 (((size_t)&(((_struct *)0)->field))%32)
 386
 387 /* Returns the bit mask of the field that is NOT shifted into location. */
 388 static inline u32 amap_mask(u32 bitsize)
 389 {
 390         return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
 391 }
 392
 393 static inline void
 394 amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
 395 {
 396         u32 *dw = (u32 *) ptr + dw_offset;
 397         *dw &= ~(mask << offset);
 398         *dw |= (mask & value) << offset;
 399 }
 400
 401 #define AMAP_SET_BITS(_struct, field, ptr, val)                         \
 402                 amap_set(ptr,                                           \
 403                         offsetof(_struct, field)/32,                    \
 404                         amap_mask(sizeof(((_struct *)0)->field)),       \
 405                         AMAP_BIT_OFFSET(_struct, field),                \
 406                         val)
 407
 408 static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
 409 {
 410         u32 *dw = (u32 *) ptr;
 411         return mask & (*(dw + dw_offset) >> offset);
 412 }
 413
 414 #define AMAP_GET_BITS(_struct, field, ptr)                              \
 415                 amap_get(ptr,                                           \
 416                         offsetof(_struct, field)/32,                    \
 417                         amap_mask(sizeof(((_struct *)0)->field)),       \
 418                         AMAP_BIT_OFFSET(_struct, field))
 419
 420 #define be_dws_cpu_to_le(wrb, len)      swap_dws(wrb, len)
 421 #define be_dws_le_to_cpu(wrb, len)      swap_dws(wrb, len)
 422 static inline void swap_dws(void *wrb, int len)
 423 {
 424 #ifdef __BIG_ENDIAN
 425         u32 *dw = wrb;
 426         BUG_ON(len % 4);
 427         do {
 428                 *dw = cpu_to_le32(*dw);
 429                 dw++;
 430                 len -= 4;
 431         } while (len);
 432 #endif                          /* __BIG_ENDIAN */
 433 }
 434
 435 static inline u8 is_tcp_pkt(struct sk_buff *skb)
 436 {
 437         u8 val = 0;
 438
 439         if (ip_hdr(skb)->version == 4)
 440                 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
 441         else if (ip_hdr(skb)->version == 6)
 442                 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
 443
 444         return val;
 445 }
 446
 447 static inline u8 is_udp_pkt(struct sk_buff *skb)
 448 {
 449         u8 val = 0;
 450
 451         if (ip_hdr(skb)->version == 4)
 452                 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
 453         else if (ip_hdr(skb)->version == 6)
 454                 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
 455
 456         return val;
 457 }
 458
 459 static inline void be_check_sriov_fn_type(struct be_adapter *adapter)
 460 {
 461         u8 data;
 462         u32 sli_intf;
 463
 464         if (lancer_chip(adapter)) {
 465                 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET,
 466                                                                 &sli_intf);
 467                 adapter->is_virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
 468         } else {
 469                 pci_write_config_byte(adapter->pdev, 0xFE, 0xAA);
 470                 pci_read_config_byte(adapter->pdev, 0xFE, &data);
 471                 adapter->is_virtfn = (data != 0xAA);
 472         }
 473 }
 474
 475 static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
 476 {
 477         u32 addr;
 478
 479         addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
 480
 481         mac[5] = (u8)(addr & 0xFF);
 482         mac[4] = (u8)((addr >> 8) & 0xFF);
 483         mac[3] = (u8)((addr >> 16) & 0xFF);
 484         /* Use the OUI from the current MAC address */
 485         memcpy(mac, adapter->netdev->dev_addr, 3);
 486 }
 487
 488 static inline bool be_multi_rxq(const struct be_adapter *adapter)
 489 {
 490         return adapter->num_rx_qs > 1;
 491 }
 492
 493 extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
 494                 u16 num_popped);
 495 extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
 496 extern void netdev_stats_update(struct be_adapter *adapter);
 497 extern int be_load_fw(struct be_adapter *adapter, u8 *func);
 498 #endif                          /* BE_H */