2 * Copyright (C) 2005 - 2011 Emulex
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.
10 * Contact Information:
11 * linux-drivers@emulex.com
15 * Costa Mesa, CA 92626
21 #include <linux/pci.h>
22 #include <linux/etherdevice.h>
23 #include <linux/version.h>
24 #include <linux/delay.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>
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"
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 */
53 static inline char *nic_name(struct pci_dev *pdev)
55 switch (pdev->device) {
61 return OC_NAME_LANCER;
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
74 #define BE_NUM_VLANS_SUPPORTED 64
76 #define BE_MAX_TX_FRAG_COUNT 30
78 #define EVNT_Q_LEN 1024
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
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)
101 struct be_queue_info {
102 struct be_dma_mem dma_mem;
104 u16 entry_size; /* Size of an element in the queue */
108 atomic_t used; /* Number of valid elements in the queue */
111 static inline u32 MODULO(u16 val, u16 limit)
113 BUG_ON(limit & (limit - 1));
114 return val & (limit - 1);
117 static inline void index_adv(u16 *index, u16 val, u16 limit)
119 *index = MODULO((*index + val), limit);
122 static inline void index_inc(u16 *index, u16 limit)
124 *index = MODULO((*index + 1), limit);
127 static inline void *queue_head_node(struct be_queue_info *q)
129 return q->dma_mem.va + q->head * q->entry_size;
132 static inline void *queue_tail_node(struct be_queue_info *q)
134 return q->dma_mem.va + q->tail * q->entry_size;
137 static inline void queue_head_inc(struct be_queue_info *q)
139 index_inc(&q->head, q->len);
142 static inline void queue_tail_inc(struct be_queue_info *q)
144 index_inc(&q->tail, q->len);
148 struct be_queue_info q;
151 /* Adaptive interrupt coalescing (AIC) info */
153 u16 min_eqd; /* in usecs */
154 u16 max_eqd; /* in usecs */
155 u16 cur_eqd; /* in usecs */
158 struct napi_struct napi;
162 struct be_queue_info q;
163 struct be_queue_info cq;
168 u32 be_tx_reqs; /* number of TX requests initiated */
169 u32 be_tx_stops; /* number of times TX Q was stopped */
170 u32 be_tx_wrbs; /* number of tx WRBs used */
171 u32 be_tx_events; /* number of tx completion events */
172 u32 be_tx_compl; /* number of tx completion entries processed */
175 u64 be_tx_bytes_prev;
181 struct be_queue_info q;
182 struct be_queue_info cq;
183 /* Remember the skbs that were transmitted */
184 struct sk_buff *sent_skb_list[TX_Q_LEN];
187 /* Struct to remember the pages posted for rx frags */
188 struct be_rx_page_info {
190 DEFINE_DMA_UNMAP_ADDR(bus);
196 u32 rx_post_fail;/* number of ethrx buffer alloc failures */
197 u32 rx_polls; /* number of times NAPI called poll function */
198 u32 rx_events; /* number of ucast rx completion events */
199 u32 rx_compl; /* number of rx completion entries processed */
206 u32 rxcp_err; /* Num rx completion entries w/ err set. */
207 ulong rx_fps_jiffies; /* jiffies at last FPS calc */
210 u32 rx_fps; /* Rx frags per second */
213 struct be_rx_compl_info {
233 struct be_adapter *adapter;
234 struct be_queue_info q;
235 struct be_queue_info cq;
236 struct be_rx_compl_info rxcp;
237 struct be_rx_page_info page_info_tbl[RX_Q_LEN];
238 struct be_eq_obj rx_eq;
239 struct be_rx_stats stats;
241 bool rx_post_starved; /* Zero rx frags have been posted to BE */
242 u32 cache_line_barrier[16];
245 struct be_drv_stats {
246 u8 be_on_die_temperature;
250 unsigned char vf_mac_addr[ETH_ALEN];
257 #define BE_INVALID_PMAC_ID 0xffffffff
260 struct pci_dev *pdev;
261 struct net_device *netdev;
264 u8 __iomem *db; /* Door Bell */
265 u8 __iomem *pcicfg; /* PCI config space */
267 struct mutex mbox_lock; /* For serializing mbox cmds to BE card */
268 struct be_dma_mem mbox_mem;
269 /* Mbox mem is adjusted to align to 16 bytes. The allocated addr
270 * is stored for freeing purpose */
271 struct be_dma_mem mbox_mem_alloced;
273 struct be_mcc_obj mcc_obj;
274 spinlock_t mcc_lock; /* For serializing mcc cmds to BE card */
275 spinlock_t mcc_cq_lock;
277 struct msix_entry msix_entries[BE_MAX_MSIX_VECTORS];
282 struct be_eq_obj tx_eq;
283 struct be_tx_obj tx_obj;
284 struct be_tx_stats tx_stats;
286 u32 cache_line_break[8];
289 struct be_rx_obj rx_obj[MAX_RX_QS];
291 u32 big_page_size; /* Compounded page size shared by rx wrbs */
294 struct be_drv_stats drv_stats;
296 struct vlan_group *vlan_grp;
298 u16 max_vlans; /* Number of vlans supported */
299 u8 vlan_tag[VLAN_N_VID];
300 u8 vlan_prio_bmap; /* Available Priority BitMap */
301 u16 recommended_prio; /* Recommended Priority */
302 struct be_dma_mem mc_cmd_mem;
304 struct be_dma_mem stats_cmd;
305 /* Work queue used to perform periodic tasks like getting statistics */
306 struct delayed_work work;
309 /* Ethtool knobs and info */
310 bool rx_csum; /* BE card must perform rx-checksumming */
311 char fw_ver[FW_VER_LEN];
312 u32 if_handle; /* Used to configure filtering */
313 u32 pmac_id; /* MAC addr handle used by BE card */
314 u32 beacon_state; /* for set_phys_id */
323 u32 rx_fc; /* Rx flow control */
324 u32 tx_fc; /* Tx flow control */
331 u8 generation; /* BladeEngine ASIC generation */
333 struct completion flash_compl;
337 struct be_vf_cfg *vf_cfg;
344 #define be_physfn(adapter) (!adapter->is_virtfn)
346 /* BladeEngine Generation numbers */
350 #define lancer_chip(adapter) (adapter->pdev->device == OC_DEVICE_ID3)
352 extern const struct ethtool_ops be_ethtool_ops;
354 #define msix_enabled(adapter) (adapter->num_msix_vec > 0)
355 #define tx_stats(adapter) (&adapter->tx_stats)
356 #define rx_stats(rxo) (&rxo->stats)
358 #define BE_SET_NETDEV_OPS(netdev, ops) (netdev->netdev_ops = ops)
360 #define for_all_rx_queues(adapter, rxo, i) \
361 for (i = 0, rxo = &adapter->rx_obj[i]; i < adapter->num_rx_qs; \
364 /* Just skip the first default non-rss queue */
365 #define for_all_rss_queues(adapter, rxo, i) \
366 for (i = 0, rxo = &adapter->rx_obj[i+1]; i < (adapter->num_rx_qs - 1);\
369 #define PAGE_SHIFT_4K 12
370 #define PAGE_SIZE_4K (1 << PAGE_SHIFT_4K)
372 /* Returns number of pages spanned by the data starting at the given addr */
373 #define PAGES_4K_SPANNED(_address, size) \
374 ((u32)((((size_t)(_address) & (PAGE_SIZE_4K - 1)) + \
375 (size) + (PAGE_SIZE_4K - 1)) >> PAGE_SHIFT_4K))
377 /* Byte offset into the page corresponding to given address */
378 #define OFFSET_IN_PAGE(addr) \
379 ((size_t)(addr) & (PAGE_SIZE_4K-1))
381 /* Returns bit offset within a DWORD of a bitfield */
382 #define AMAP_BIT_OFFSET(_struct, field) \
383 (((size_t)&(((_struct *)0)->field))%32)
385 /* Returns the bit mask of the field that is NOT shifted into location. */
386 static inline u32 amap_mask(u32 bitsize)
388 return (bitsize == 32 ? 0xFFFFFFFF : (1 << bitsize) - 1);
392 amap_set(void *ptr, u32 dw_offset, u32 mask, u32 offset, u32 value)
394 u32 *dw = (u32 *) ptr + dw_offset;
395 *dw &= ~(mask << offset);
396 *dw |= (mask & value) << offset;
399 #define AMAP_SET_BITS(_struct, field, ptr, val) \
401 offsetof(_struct, field)/32, \
402 amap_mask(sizeof(((_struct *)0)->field)), \
403 AMAP_BIT_OFFSET(_struct, field), \
406 static inline u32 amap_get(void *ptr, u32 dw_offset, u32 mask, u32 offset)
408 u32 *dw = (u32 *) ptr;
409 return mask & (*(dw + dw_offset) >> offset);
412 #define AMAP_GET_BITS(_struct, field, ptr) \
414 offsetof(_struct, field)/32, \
415 amap_mask(sizeof(((_struct *)0)->field)), \
416 AMAP_BIT_OFFSET(_struct, field))
418 #define be_dws_cpu_to_le(wrb, len) swap_dws(wrb, len)
419 #define be_dws_le_to_cpu(wrb, len) swap_dws(wrb, len)
420 static inline void swap_dws(void *wrb, int len)
426 *dw = cpu_to_le32(*dw);
430 #endif /* __BIG_ENDIAN */
433 static inline u8 is_tcp_pkt(struct sk_buff *skb)
437 if (ip_hdr(skb)->version == 4)
438 val = (ip_hdr(skb)->protocol == IPPROTO_TCP);
439 else if (ip_hdr(skb)->version == 6)
440 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_TCP);
445 static inline u8 is_udp_pkt(struct sk_buff *skb)
449 if (ip_hdr(skb)->version == 4)
450 val = (ip_hdr(skb)->protocol == IPPROTO_UDP);
451 else if (ip_hdr(skb)->version == 6)
452 val = (ipv6_hdr(skb)->nexthdr == NEXTHDR_UDP);
457 static inline void be_check_sriov_fn_type(struct be_adapter *adapter)
461 pci_read_config_dword(adapter->pdev, SLI_INTF_REG_OFFSET, &sli_intf);
462 adapter->is_virtfn = (sli_intf & SLI_INTF_FT_MASK) ? 1 : 0;
465 static inline void be_vf_eth_addr_generate(struct be_adapter *adapter, u8 *mac)
469 addr = jhash(adapter->netdev->dev_addr, ETH_ALEN, 0);
471 mac[5] = (u8)(addr & 0xFF);
472 mac[4] = (u8)((addr >> 8) & 0xFF);
473 mac[3] = (u8)((addr >> 16) & 0xFF);
474 /* Use the OUI from the current MAC address */
475 memcpy(mac, adapter->netdev->dev_addr, 3);
478 static inline bool be_multi_rxq(const struct be_adapter *adapter)
480 return adapter->num_rx_qs > 1;
483 extern void be_cq_notify(struct be_adapter *adapter, u16 qid, bool arm,
485 extern void be_link_status_update(struct be_adapter *adapter, bool link_up);
486 extern void netdev_stats_update(struct be_adapter *adapter);
487 extern int be_load_fw(struct be_adapter *adapter, u8 *func);