2 * Linux network driver for Brocade Converged Network Adapter.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License (GPL) Version 2 as
6 * published by the Free Software Foundation
8 * This program is distributed in the hope that it will be useful, but
9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
14 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
21 #include <linux/rtnetlink.h>
22 #include <linux/workqueue.h>
23 #include <linux/ipv6.h>
24 #include <linux/etherdevice.h>
25 #include <linux/mutex.h>
26 #include <linux/firmware.h>
27 #include <linux/if_vlan.h>
30 #include <asm/checksum.h>
31 #include <net/ip6_checksum.h>
38 #define BNAD_TXQ_DEPTH 2048
39 #define BNAD_RXQ_DEPTH 2048
42 #define BNAD_MAX_TXQ_PER_TX 8 /* 8 priority queues */
43 #define BNAD_TXQ_NUM 1
46 #define BNAD_MAX_RXP_PER_RX 16
47 #define BNAD_MAX_RXQ_PER_RXP 2
50 * Control structure pointed to ccb->ctrl, which
51 * determines the NAPI / LRO behavior CCB
52 * There is 1:1 corres. between ccb & ctrl
58 struct napi_struct napi;
66 #define BNAD_RXMODE_PROMISC_DEFAULT BNA_RXMODE_PROMISC
69 * GLOBAL #defines (CONSTANTS)
71 #define BNAD_NAME "bna"
72 #define BNAD_NAME_LEN 64
74 #define BNAD_VERSION "3.0.2.2"
76 #define BNAD_MAILBOX_MSIX_INDEX 0
77 #define BNAD_MAILBOX_MSIX_VECTORS 1
78 #define BNAD_INTX_TX_IB_BITMASK 0x1
79 #define BNAD_INTX_RX_IB_BITMASK 0x2
81 #define BNAD_STATS_TIMER_FREQ 1000 /* in msecs */
82 #define BNAD_DIM_TIMER_FREQ 1000 /* in msecs */
84 #define BNAD_IOCETH_TIMEOUT 10000
86 #define BNAD_MAX_Q_DEPTH 0x10000
87 #define BNAD_MIN_Q_DEPTH 0x200
89 #define BNAD_MAX_RXQ_DEPTH (BNAD_MAX_Q_DEPTH / bnad_rxqs_per_cq)
90 /* keeping MAX TX and RX Q depth equal */
91 #define BNAD_MAX_TXQ_DEPTH BNAD_MAX_RXQ_DEPTH
93 #define BNAD_JUMBO_MTU 9000
95 #define BNAD_NETIF_WAKE_THRESHOLD 8
97 #define BNAD_RXQ_REFILL_THRESHOLD_SHIFT 3
99 /* Bit positions for tcb->flags */
100 #define BNAD_TXQ_FREE_SENT 0
101 #define BNAD_TXQ_TX_STARTED 1
103 /* Bit positions for rcb->flags */
104 #define BNAD_RXQ_REFILL 0
105 #define BNAD_RXQ_STARTED 1
106 #define BNAD_RXQ_POST_OK 2
108 /* Resource limits */
109 #define BNAD_NUM_TXQ (bnad->num_tx * bnad->num_txq_per_tx)
110 #define BNAD_NUM_RXP (bnad->num_rx * bnad->num_rxp_per_rx)
117 enum bnad_intr_source {
122 enum bnad_link_state {
127 struct bnad_iocmd_comp {
129 struct completion comp;
133 struct bnad_completion {
134 struct completion ioc_comp;
135 struct completion ucast_comp;
136 struct completion mcast_comp;
137 struct completion tx_comp;
138 struct completion rx_comp;
139 struct completion stats_comp;
140 struct completion enet_comp;
141 struct completion mtu_comp;
144 u8 ucast_comp_status;
145 u8 mcast_comp_status;
148 u8 stats_comp_status;
153 /* Tx Rx Control Stats */
154 struct bnad_drv_stats {
155 u64 netif_queue_stop;
156 u64 netif_queue_wakeup;
157 u64 netif_queue_stopped;
164 u64 tx_skb_too_short;
166 u64 tx_skb_max_vectors;
167 u64 tx_skb_mss_too_long;
168 u64 tx_skb_tso_too_short;
169 u64 tx_skb_tso_prepare;
170 u64 tx_skb_non_tso_too_long;
174 u64 tx_skb_headlen_too_long;
175 u64 tx_skb_headlen_zero;
176 u64 tx_skb_frag_zero;
177 u64 tx_skb_len_mismatch;
179 u64 hw_stats_updates;
180 u64 netif_rx_dropped;
185 u64 rxp_info_alloc_failed;
186 u64 mbox_intr_disabled;
187 u64 mbox_intr_enabled;
188 u64 tx_unmap_q_alloc_failed;
189 u64 rx_unmap_q_alloc_failed;
191 u64 rxbuf_alloc_failed;
194 /* Complete driver stats */
196 struct bnad_drv_stats drv_stats;
197 struct bna_stats *bna_stats;
200 /* Tx / Rx Resources */
201 struct bnad_tx_res_info {
202 struct bna_res_info res_info[BNA_TX_RES_T_MAX];
205 struct bnad_rx_res_info {
206 struct bna_res_info res_info[BNA_RX_RES_T_MAX];
209 struct bnad_tx_info {
210 struct bna_tx *tx; /* 1:1 between tx_info & tx */
211 struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX];
213 } ____cacheline_aligned;
215 struct bnad_rx_info {
216 struct bna_rx *rx; /* 1:1 between rx_info & rx */
218 struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXP_PER_RX];
220 } ____cacheline_aligned;
222 /* Unmap queues for Tx / Rx cleanup */
223 struct bnad_skb_unmap {
225 DEFINE_DMA_UNMAP_ADDR(dma_addr);
228 struct bnad_unmap_q {
232 /* This should be the last one */
233 struct bnad_skb_unmap unmap_array[1];
236 /* Bit mask values for bnad->cfg_flags */
237 #define BNAD_CF_DIM_ENABLED 0x01 /* DIM */
238 #define BNAD_CF_PROMISC 0x02
239 #define BNAD_CF_ALLMULTI 0x04
240 #define BNAD_CF_MSIX 0x08 /* If in MSIx mode */
242 /* Defines for run_flags bit-mask */
243 /* Set, tested & cleared using xxx_bit() functions */
244 /* Values indicated bit positions */
245 #define BNAD_RF_CEE_RUNNING 0
246 #define BNAD_RF_MTU_SET 1
247 #define BNAD_RF_MBOX_IRQ_DISABLED 2
248 #define BNAD_RF_NETDEV_REGISTERED 3
249 #define BNAD_RF_DIM_TIMER_RUNNING 4
250 #define BNAD_RF_STATS_TIMER_RUNNING 5
251 #define BNAD_RF_TX_PRIO_SET 6
254 /* Define for Fast Path flags */
255 /* Defined as bit positions */
256 #define BNAD_FP_IN_RX_PATH 0
259 struct net_device *netdev;
261 struct list_head list_entry;
264 struct bnad_tx_info tx_info[BNAD_MAX_TX];
265 struct bnad_rx_info rx_info[BNAD_MAX_RX];
267 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
269 * These q numbers are global only because
270 * they are used to calculate MSIx vectors.
271 * Actually the exact # of queues are per Tx/Rx
282 u8 tx_coalescing_timeo;
283 u8 rx_coalescing_timeo;
285 struct bna_rx_config rx_config[BNAD_MAX_RX];
286 struct bna_tx_config tx_config[BNAD_MAX_TX];
288 void __iomem *bar0; /* BAR0 address */
293 unsigned long run_flags;
295 struct pci_dev *pcidev;
300 struct msix_entry *msix_table;
302 struct mutex conf_mutex;
303 spinlock_t bna_lock ____cacheline_aligned;
306 struct timer_list ioc_timer;
307 struct timer_list dim_timer;
308 struct timer_list stats_timer;
310 /* Control path resources, memory & irq */
311 struct bna_res_info res_info[BNA_RES_T_MAX];
312 struct bna_res_info mod_res_info[BNA_MOD_RES_T_MAX];
313 struct bnad_tx_res_info tx_res_info[BNAD_MAX_TX];
314 struct bnad_rx_res_info rx_res_info[BNAD_MAX_RX];
316 struct bnad_completion bnad_completions;
318 /* Burnt in MAC address */
321 struct tasklet_struct tx_free_tasklet;
324 struct bnad_stats stats;
326 struct bnad_diag *diag;
328 char adapter_name[BNAD_NAME_LEN];
329 char port_name[BNAD_NAME_LEN];
330 char mbox_irq_name[BNAD_NAME_LEN];
332 /* debugfs specific data */
335 struct dentry *bnad_dentry_files[5];
336 struct dentry *port_debugfs_root;
339 struct bnad_drvinfo {
340 struct bfa_ioc_attr ioc_attr;
341 struct bfa_cee_attr cee_attr;
342 struct bfa_flash_attr flash_attr;
350 extern const struct firmware *bfi_fw;
351 extern u32 bnad_rxqs_per_cq;
356 extern u32 *cna_get_firmware_buf(struct pci_dev *pdev);
357 /* Netdev entry point prototypes */
358 extern void bnad_set_rx_mode(struct net_device *netdev);
359 extern struct net_device_stats *bnad_get_netdev_stats(
360 struct net_device *netdev);
361 extern int bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr);
362 extern int bnad_enable_default_bcast(struct bnad *bnad);
363 extern void bnad_restore_vlans(struct bnad *bnad, u32 rx_id);
364 extern void bnad_set_ethtool_ops(struct net_device *netdev);
365 extern void bnad_cb_completion(void *arg, enum bfa_status status);
367 /* Configuration & setup */
368 extern void bnad_tx_coalescing_timeo_set(struct bnad *bnad);
369 extern void bnad_rx_coalescing_timeo_set(struct bnad *bnad);
371 extern int bnad_setup_rx(struct bnad *bnad, u32 rx_id);
372 extern int bnad_setup_tx(struct bnad *bnad, u32 tx_id);
373 extern void bnad_cleanup_tx(struct bnad *bnad, u32 tx_id);
374 extern void bnad_cleanup_rx(struct bnad *bnad, u32 rx_id);
376 /* Timer start/stop protos */
377 extern void bnad_dim_timer_start(struct bnad *bnad);
380 extern void bnad_netdev_qstats_fill(struct bnad *bnad,
381 struct rtnl_link_stats64 *stats);
382 extern void bnad_netdev_hwstats_fill(struct bnad *bnad,
383 struct rtnl_link_stats64 *stats);
386 void bnad_debugfs_init(struct bnad *bnad);
387 void bnad_debugfs_uninit(struct bnad *bnad);
392 /* To set & get the stats counters */
393 #define BNAD_UPDATE_CTR(_bnad, _ctr) \
394 (((_bnad)->stats.drv_stats._ctr)++)
396 #define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr)
398 #define bnad_enable_rx_irq_unsafe(_ccb) \
400 if (likely(test_bit(BNAD_RXQ_STARTED, &(_ccb)->rcb[0]->flags))) {\
401 bna_ib_coalescing_timer_set((_ccb)->i_dbell, \
402 (_ccb)->rx_coalescing_timeo); \
403 bna_ib_ack((_ccb)->i_dbell, 0); \
407 #endif /* __BNAD_H__ */