bna: MBOX IRQ Flag Check after Locking
[deliverable/linux.git] / drivers / net / ethernet / brocade / bna / bnad.h
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1/*
2 * Linux network driver for Brocade Converged Network Adapter.
3 *
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
7 *
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.
12 */
13/*
14 * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
15 * All rights reserved
16 * www.brocade.com
17 */
18#ifndef __BNAD_H__
19#define __BNAD_H__
20
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>
f859d7cb 27#include <linux/if_vlan.h>
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28
29/* Fix for IA64 */
30#include <asm/checksum.h>
31#include <net/ip6_checksum.h>
32
33#include <net/ip.h>
34#include <net/tcp.h>
35
36#include "bna.h"
37
38#define BNAD_TXQ_DEPTH 2048
39#define BNAD_RXQ_DEPTH 2048
40
772b5235 41#define BNAD_MAX_TX 1
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42#define BNAD_MAX_TXQ_PER_TX 8 /* 8 priority queues */
43#define BNAD_TXQ_NUM 1
44
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45#define BNAD_MAX_RX 1
46#define BNAD_MAX_RXP_PER_RX 16
078086f3 47#define BNAD_MAX_RXQ_PER_RXP 2
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48
49/*
50 * Control structure pointed to ccb->ctrl, which
51 * determines the NAPI / LRO behavior CCB
52 * There is 1:1 corres. between ccb & ctrl
53 */
54struct bnad_rx_ctrl {
55 struct bna_ccb *ccb;
2be67144 56 struct bnad *bnad;
be7fa326 57 unsigned long flags;
8b230ed8 58 struct napi_struct napi;
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59 u64 rx_intr_ctr;
60 u64 rx_poll_ctr;
61 u64 rx_schedule;
62 u64 rx_keep_poll;
63 u64 rx_complete;
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64};
65
66#define BNAD_RXMODE_PROMISC_DEFAULT BNA_RXMODE_PROMISC
67
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68/*
69 * GLOBAL #defines (CONSTANTS)
70 */
71#define BNAD_NAME "bna"
72#define BNAD_NAME_LEN 64
73
5098af0a 74#define BNAD_VERSION "3.0.2.0"
8b230ed8 75
8811e267 76#define BNAD_MAILBOX_MSIX_INDEX 0
8b230ed8 77#define BNAD_MAILBOX_MSIX_VECTORS 1
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78#define BNAD_INTX_TX_IB_BITMASK 0x1
79#define BNAD_INTX_RX_IB_BITMASK 0x2
8b230ed8 80
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81#define BNAD_STATS_TIMER_FREQ 1000 /* in msecs */
82#define BNAD_DIM_TIMER_FREQ 1000 /* in msecs */
8b230ed8 83
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84#define BNAD_IOCETH_TIMEOUT 10000
85
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86#define BNAD_MAX_Q_DEPTH 0x10000
87#define BNAD_MIN_Q_DEPTH 0x200
88
89#define BNAD_JUMBO_MTU 9000
90
91#define BNAD_NETIF_WAKE_THRESHOLD 8
92
93#define BNAD_RXQ_REFILL_THRESHOLD_SHIFT 3
94
95/* Bit positions for tcb->flags */
96#define BNAD_TXQ_FREE_SENT 0
be7fa326 97#define BNAD_TXQ_TX_STARTED 1
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98
99/* Bit positions for rcb->flags */
100#define BNAD_RXQ_REFILL 0
101#define BNAD_RXQ_STARTED 1
102
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103/* Resource limits */
104#define BNAD_NUM_TXQ (bnad->num_tx * bnad->num_txq_per_tx)
105#define BNAD_NUM_RXP (bnad->num_rx * bnad->num_rxp_per_rx)
106
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107/*
108 * DATA STRUCTURES
109 */
110
111/* enums */
112enum bnad_intr_source {
113 BNAD_INTR_TX = 1,
114 BNAD_INTR_RX = 2
115};
116
117enum bnad_link_state {
118 BNAD_LS_DOWN = 0,
0120b99c 119 BNAD_LS_UP = 1
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120};
121
122struct bnad_completion {
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123 struct completion ioc_comp;
124 struct completion ucast_comp;
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125 struct completion mcast_comp;
126 struct completion tx_comp;
127 struct completion rx_comp;
128 struct completion stats_comp;
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129 struct completion enet_comp;
130 struct completion mtu_comp;
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131
132 u8 ioc_comp_status;
133 u8 ucast_comp_status;
134 u8 mcast_comp_status;
135 u8 tx_comp_status;
136 u8 rx_comp_status;
137 u8 stats_comp_status;
138 u8 port_comp_status;
078086f3 139 u8 mtu_comp_status;
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140};
141
142/* Tx Rx Control Stats */
143struct bnad_drv_stats {
0120b99c 144 u64 netif_queue_stop;
8b230ed8 145 u64 netif_queue_wakeup;
f7c0fa4c 146 u64 netif_queue_stopped;
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147 u64 tso4;
148 u64 tso6;
149 u64 tso_err;
150 u64 tcpcsum_offload;
151 u64 udpcsum_offload;
152 u64 csum_help;
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153 u64 tx_skb_too_short;
154 u64 tx_skb_stopping;
155 u64 tx_skb_max_vectors;
156 u64 tx_skb_mss_too_long;
157 u64 tx_skb_tso_too_short;
158 u64 tx_skb_tso_prepare;
159 u64 tx_skb_non_tso_too_long;
160 u64 tx_skb_tcp_hdr;
161 u64 tx_skb_udp_hdr;
162 u64 tx_skb_csum_err;
163 u64 tx_skb_headlen_too_long;
164 u64 tx_skb_headlen_zero;
165 u64 tx_skb_frag_zero;
166 u64 tx_skb_len_mismatch;
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167
168 u64 hw_stats_updates;
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169 u64 netif_rx_dropped;
170
171 u64 link_toggle;
078086f3 172 u64 cee_toggle;
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173
174 u64 rxp_info_alloc_failed;
175 u64 mbox_intr_disabled;
176 u64 mbox_intr_enabled;
177 u64 tx_unmap_q_alloc_failed;
178 u64 rx_unmap_q_alloc_failed;
179
180 u64 rxbuf_alloc_failed;
181};
182
183/* Complete driver stats */
184struct bnad_stats {
185 struct bnad_drv_stats drv_stats;
186 struct bna_stats *bna_stats;
187};
188
189/* Tx / Rx Resources */
190struct bnad_tx_res_info {
191 struct bna_res_info res_info[BNA_TX_RES_T_MAX];
192};
193
194struct bnad_rx_res_info {
195 struct bna_res_info res_info[BNA_RX_RES_T_MAX];
196};
197
198struct bnad_tx_info {
199 struct bna_tx *tx; /* 1:1 between tx_info & tx */
200 struct bna_tcb *tcb[BNAD_MAX_TXQ_PER_TX];
078086f3 201 u32 tx_id;
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202} ____cacheline_aligned;
203
204struct bnad_rx_info {
205 struct bna_rx *rx; /* 1:1 between rx_info & rx */
206
772b5235 207 struct bnad_rx_ctrl rx_ctrl[BNAD_MAX_RXP_PER_RX];
078086f3 208 u32 rx_id;
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209} ____cacheline_aligned;
210
211/* Unmap queues for Tx / Rx cleanup */
212struct bnad_skb_unmap {
213 struct sk_buff *skb;
5ea74318 214 DEFINE_DMA_UNMAP_ADDR(dma_addr);
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215};
216
217struct bnad_unmap_q {
218 u32 producer_index;
219 u32 consumer_index;
0120b99c 220 u32 q_depth;
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221 /* This should be the last one */
222 struct bnad_skb_unmap unmap_array[1];
223};
224
225/* Bit mask values for bnad->cfg_flags */
226#define BNAD_CF_DIM_ENABLED 0x01 /* DIM */
227#define BNAD_CF_PROMISC 0x02
228#define BNAD_CF_ALLMULTI 0x04
229#define BNAD_CF_MSIX 0x08 /* If in MSIx mode */
230
231/* Defines for run_flags bit-mask */
232/* Set, tested & cleared using xxx_bit() functions */
233/* Values indicated bit positions */
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234#define BNAD_RF_CEE_RUNNING 0
235#define BNAD_RF_MTU_SET 1
be7fa326 236#define BNAD_RF_MBOX_IRQ_DISABLED 2
078086f3 237#define BNAD_RF_NETDEV_REGISTERED 3
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238#define BNAD_RF_DIM_TIMER_RUNNING 4
239#define BNAD_RF_STATS_TIMER_RUNNING 5
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240#define BNAD_RF_TX_PRIO_SET 6
241
242
243/* Define for Fast Path flags */
244/* Defined as bit positions */
245#define BNAD_FP_IN_RX_PATH 0
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246
247struct bnad {
0120b99c 248 struct net_device *netdev;
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249
250 /* Data path */
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251 struct bnad_tx_info tx_info[BNAD_MAX_TX];
252 struct bnad_rx_info rx_info[BNAD_MAX_RX];
8b230ed8 253
f859d7cb 254 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
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255 /*
256 * These q numbers are global only because
257 * they are used to calculate MSIx vectors.
258 * Actually the exact # of queues are per Tx/Rx
259 * object.
260 */
261 u32 num_tx;
262 u32 num_rx;
263 u32 num_txq_per_tx;
264 u32 num_rxp_per_rx;
265
266 u32 txq_depth;
267 u32 rxq_depth;
268
269 u8 tx_coalescing_timeo;
270 u8 rx_coalescing_timeo;
271
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272 struct bna_rx_config rx_config[BNAD_MAX_RX];
273 struct bna_tx_config tx_config[BNAD_MAX_TX];
8b230ed8 274
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275 void __iomem *bar0; /* BAR0 address */
276
277 struct bna bna;
278
279 u32 cfg_flags;
280 unsigned long run_flags;
281
0120b99c 282 struct pci_dev *pcidev;
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283 u64 mmio_start;
284 u64 mmio_len;
285
286 u32 msix_num;
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287 struct msix_entry *msix_table;
288
289 struct mutex conf_mutex;
290 spinlock_t bna_lock ____cacheline_aligned;
291
292 /* Timers */
293 struct timer_list ioc_timer;
294 struct timer_list dim_timer;
295 struct timer_list stats_timer;
296
297 /* Control path resources, memory & irq */
298 struct bna_res_info res_info[BNA_RES_T_MAX];
078086f3 299 struct bna_res_info mod_res_info[BNA_MOD_RES_T_MAX];
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300 struct bnad_tx_res_info tx_res_info[BNAD_MAX_TX];
301 struct bnad_rx_res_info rx_res_info[BNAD_MAX_RX];
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302
303 struct bnad_completion bnad_completions;
304
305 /* Burnt in MAC address */
306 mac_t perm_addr;
307
308 struct tasklet_struct tx_free_tasklet;
309
310 /* Statistics */
311 struct bnad_stats stats;
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312
313 struct bnad_diag *diag;
314
315 char adapter_name[BNAD_NAME_LEN];
0120b99c 316 char port_name[BNAD_NAME_LEN];
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317 char mbox_irq_name[BNAD_NAME_LEN];
318};
319
320/*
321 * EXTERN VARIABLES
322 */
323extern struct firmware *bfi_fw;
0120b99c 324extern u32 bnad_rxqs_per_cq;
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325
326/*
327 * EXTERN PROTOTYPES
328 */
329extern u32 *cna_get_firmware_buf(struct pci_dev *pdev);
330/* Netdev entry point prototypes */
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331extern void bnad_set_rx_mode(struct net_device *netdev);
332extern struct net_device_stats *bnad_get_netdev_stats(
333 struct net_device *netdev);
334extern int bnad_mac_addr_set_locked(struct bnad *bnad, u8 *mac_addr);
335extern int bnad_enable_default_bcast(struct bnad *bnad);
336extern void bnad_restore_vlans(struct bnad *bnad, u32 rx_id);
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337extern void bnad_set_ethtool_ops(struct net_device *netdev);
338
339/* Configuration & setup */
340extern void bnad_tx_coalescing_timeo_set(struct bnad *bnad);
341extern void bnad_rx_coalescing_timeo_set(struct bnad *bnad);
342
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343extern int bnad_setup_rx(struct bnad *bnad, u32 rx_id);
344extern int bnad_setup_tx(struct bnad *bnad, u32 tx_id);
345extern void bnad_cleanup_tx(struct bnad *bnad, u32 tx_id);
346extern void bnad_cleanup_rx(struct bnad *bnad, u32 rx_id);
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347
348/* Timer start/stop protos */
349extern void bnad_dim_timer_start(struct bnad *bnad);
350
351/* Statistics */
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352extern void bnad_netdev_qstats_fill(struct bnad *bnad,
353 struct rtnl_link_stats64 *stats);
354extern void bnad_netdev_hwstats_fill(struct bnad *bnad,
355 struct rtnl_link_stats64 *stats);
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356
357/**
358 * MACROS
359 */
360/* To set & get the stats counters */
361#define BNAD_UPDATE_CTR(_bnad, _ctr) \
362 (((_bnad)->stats.drv_stats._ctr)++)
363
364#define BNAD_GET_CTR(_bnad, _ctr) ((_bnad)->stats.drv_stats._ctr)
365
366#define bnad_enable_rx_irq_unsafe(_ccb) \
367{ \
271e8b79 368 if (likely(test_bit(BNAD_RXQ_STARTED, &(_ccb)->rcb[0]->flags))) {\
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369 bna_ib_coalescing_timer_set((_ccb)->i_dbell, \
370 (_ccb)->rx_coalescing_timeo); \
371 bna_ib_ack((_ccb)->i_dbell, 0); \
372 } \
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373}
374
8b230ed8 375#endif /* __BNAD_H__ */
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