2 * Copyright (c) 2003-2008 Chelsio, Inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 /* This file should not be included directly. Include common.h instead. */
35 #ifndef __T3_ADAPTER_H__
36 #define __T3_ADAPTER_H__
38 #include <linux/pci.h>
39 #include <linux/spinlock.h>
40 #include <linux/interrupt.h>
41 #include <linux/timer.h>
42 #include <linux/cache.h>
43 #include <linux/mutex.h>
44 #include <linux/bitops.h>
45 #include <linux/inet_lro.h>
54 struct adapter
*adapter
;
55 struct vlan_group
*vlan_grp
;
63 struct link_config link_config
;
64 struct net_device_stats netstats
;
68 enum { /* adapter flags */
69 FULL_INIT_DONE
= (1 << 0),
71 USING_MSIX
= (1 << 2),
72 QUEUES_BOUND
= (1 << 3),
73 TP_PARITY_INIT
= (1 << 4),
86 struct sge_fl
{ /* SGE per free-buffer list state */
87 unsigned int buf_size
; /* size of each Rx buffer */
88 unsigned int credits
; /* # of available Rx buffers */
89 unsigned int size
; /* capacity of free list */
90 unsigned int cidx
; /* consumer index */
91 unsigned int pidx
; /* producer index */
92 unsigned int gen
; /* free list generation */
93 struct fl_pg_chunk pg_chunk
;/* page chunk cache */
94 unsigned int use_pages
; /* whether FL uses pages or sk_buffs */
95 unsigned int order
; /* order of page allocations */
96 struct rx_desc
*desc
; /* address of HW Rx descriptor ring */
97 struct rx_sw_desc
*sdesc
; /* address of SW Rx descriptor ring */
98 dma_addr_t phys_addr
; /* physical address of HW ring start */
99 unsigned int cntxt_id
; /* SGE context id for the free list */
100 unsigned long empty
; /* # of times queue ran out of buffers */
101 unsigned long alloc_failed
; /* # of times buffer allocation failed */
105 * Bundle size for grouping offload RX packets for delivery to the stack.
106 * Don't make this too big as we do prefetch on each packet in a bundle.
108 # define RX_BUNDLE_SIZE 8
112 struct sge_rspq
{ /* state for an SGE response queue */
113 unsigned int credits
; /* # of pending response credits */
114 unsigned int size
; /* capacity of response queue */
115 unsigned int cidx
; /* consumer index */
116 unsigned int gen
; /* current generation bit */
117 unsigned int polling
; /* is the queue serviced through NAPI? */
118 unsigned int holdoff_tmr
; /* interrupt holdoff timer in 100ns */
119 unsigned int next_holdoff
; /* holdoff time for next interrupt */
120 unsigned int rx_recycle_buf
; /* whether recycling occurred
121 within current sop-eop */
122 struct rsp_desc
*desc
; /* address of HW response ring */
123 dma_addr_t phys_addr
; /* physical address of the ring */
124 unsigned int cntxt_id
; /* SGE context id for the response q */
125 spinlock_t lock
; /* guards response processing */
126 struct sk_buff_head rx_queue
; /* offload packet receive queue */
127 struct sk_buff
*pg_skb
; /* used to build frag list in napi handler */
129 unsigned long offload_pkts
;
130 unsigned long offload_bundles
;
131 unsigned long eth_pkts
; /* # of ethernet packets */
132 unsigned long pure_rsps
; /* # of pure (non-data) responses */
133 unsigned long imm_data
; /* responses with immediate data */
134 unsigned long rx_drops
; /* # of packets dropped due to no mem */
135 unsigned long async_notif
; /* # of asynchronous notification events */
136 unsigned long empty
; /* # of times queue ran out of credits */
137 unsigned long nomem
; /* # of responses deferred due to no mem */
138 unsigned long unhandled_irqs
; /* # of spurious intrs */
139 unsigned long starved
;
140 unsigned long restarted
;
146 struct sge_txq
{ /* state for an SGE Tx queue */
147 unsigned long flags
; /* HW DMA fetch status */
148 unsigned int in_use
; /* # of in-use Tx descriptors */
149 unsigned int size
; /* # of descriptors */
150 unsigned int processed
; /* total # of descs HW has processed */
151 unsigned int cleaned
; /* total # of descs SW has reclaimed */
152 unsigned int stop_thres
; /* SW TX queue suspend threshold */
153 unsigned int cidx
; /* consumer index */
154 unsigned int pidx
; /* producer index */
155 unsigned int gen
; /* current value of generation bit */
156 unsigned int unacked
; /* Tx descriptors used since last COMPL */
157 struct tx_desc
*desc
; /* address of HW Tx descriptor ring */
158 struct tx_sw_desc
*sdesc
; /* address of SW Tx descriptor ring */
159 spinlock_t lock
; /* guards enqueueing of new packets */
160 unsigned int token
; /* WR token */
161 dma_addr_t phys_addr
; /* physical address of the ring */
162 struct sk_buff_head sendq
; /* List of backpressured offload packets */
163 struct tasklet_struct qresume_tsk
; /* restarts the queue */
164 unsigned int cntxt_id
; /* SGE context id for the Tx q */
165 unsigned long stops
; /* # of times q has been stopped */
166 unsigned long restarts
; /* # of queue restarts */
169 enum { /* per port SGE statistics */
170 SGE_PSTAT_TSO
, /* # of TSO requests */
171 SGE_PSTAT_RX_CSUM_GOOD
, /* # of successful RX csum offloads */
172 SGE_PSTAT_TX_CSUM
, /* # of TX checksum offloads */
173 SGE_PSTAT_VLANEX
, /* # of VLAN tag extractions */
174 SGE_PSTAT_VLANINS
, /* # of VLAN tag insertions */
175 SGE_PSTAT_LRO_AGGR
, /* # of page chunks added to LRO sessions */
176 SGE_PSTAT_LRO_FLUSHED
, /* # of flushed LRO sessions */
177 SGE_PSTAT_LRO_NO_DESC
, /* # of overflown LRO sessions */
179 SGE_PSTAT_MAX
/* must be last */
182 #define T3_MAX_LRO_SES 8
183 #define T3_MAX_LRO_MAX_PKTS 64
185 struct sge_qset
{ /* an SGE queue set */
186 struct adapter
*adap
;
187 struct napi_struct napi
;
188 struct sge_rspq rspq
;
189 struct sge_fl fl
[SGE_RXQ_PER_SET
];
190 struct sge_txq txq
[SGE_TXQ_PER_SET
];
191 struct net_lro_mgr lro_mgr
;
192 struct net_lro_desc lro_desc
[T3_MAX_LRO_SES
];
193 struct skb_frag_struct
*lro_frag_tbl
;
198 struct net_device
*netdev
;
199 unsigned long txq_stopped
; /* which Tx queues are stopped */
200 struct timer_list tx_reclaim_timer
; /* reclaims TX buffers */
201 unsigned long port_stats
[SGE_PSTAT_MAX
];
202 } ____cacheline_aligned
;
205 struct sge_qset qs
[SGE_QSETS
];
206 spinlock_t reg_lock
; /* guards non-atomic SGE registers (eg context) */
211 struct list_head adapter_list
;
213 struct pci_dev
*pdev
;
214 unsigned long registered_device_map
;
215 unsigned long open_device_map
;
220 unsigned int mmio_len
;
222 struct adapter_params params
;
223 unsigned int slow_intr_mask
;
224 unsigned long irq_stats
[IRQ_NUM_STATS
];
229 } msix_info
[SGE_QSETS
+ 1];
238 struct net_device
*port
[MAX_NPORTS
];
239 unsigned int check_task_cnt
;
240 struct delayed_work adap_check_task
;
241 struct work_struct ext_intr_handler_task
;
242 struct work_struct fatal_error_handler_task
;
244 struct dentry
*debugfs_root
;
246 struct mutex mdio_lock
;
247 spinlock_t stats_lock
;
248 spinlock_t work_lock
;
251 static inline u32
t3_read_reg(struct adapter
*adapter
, u32 reg_addr
)
253 u32 val
= readl(adapter
->regs
+ reg_addr
);
255 CH_DBG(adapter
, MMIO
, "read register 0x%x value 0x%x\n", reg_addr
, val
);
259 static inline void t3_write_reg(struct adapter
*adapter
, u32 reg_addr
, u32 val
)
261 CH_DBG(adapter
, MMIO
, "setting register 0x%x to 0x%x\n", reg_addr
, val
);
262 writel(val
, adapter
->regs
+ reg_addr
);
265 static inline struct port_info
*adap2pinfo(struct adapter
*adap
, int idx
)
267 return netdev_priv(adap
->port
[idx
]);
270 #define OFFLOAD_DEVMAP_BIT 15
272 #define tdev2adap(d) container_of(d, struct adapter, tdev)
274 static inline int offload_running(struct adapter
*adapter
)
276 return test_bit(OFFLOAD_DEVMAP_BIT
, &adapter
->open_device_map
);
279 int t3_offload_tx(struct t3cdev
*tdev
, struct sk_buff
*skb
);
281 void t3_os_ext_intr_handler(struct adapter
*adapter
);
282 void t3_os_link_changed(struct adapter
*adapter
, int port_id
, int link_status
,
283 int speed
, int duplex
, int fc
);
284 void t3_os_phymod_changed(struct adapter
*adap
, int port_id
);
286 void t3_sge_start(struct adapter
*adap
);
287 void t3_sge_stop(struct adapter
*adap
);
288 void t3_stop_sge_timers(struct adapter
*adap
);
289 void t3_free_sge_resources(struct adapter
*adap
);
290 void t3_sge_err_intr_handler(struct adapter
*adapter
);
291 irq_handler_t
t3_intr_handler(struct adapter
*adap
, int polling
);
292 int t3_eth_xmit(struct sk_buff
*skb
, struct net_device
*dev
);
293 int t3_mgmt_tx(struct adapter
*adap
, struct sk_buff
*skb
);
294 void t3_update_qset_coalesce(struct sge_qset
*qs
, const struct qset_params
*p
);
295 int t3_sge_alloc_qset(struct adapter
*adapter
, unsigned int id
, int nports
,
296 int irq_vec_idx
, const struct qset_params
*p
,
297 int ntxq
, struct net_device
*dev
);
298 int t3_get_desc(const struct sge_qset
*qs
, unsigned int qnum
, unsigned int idx
,
299 unsigned char *data
);
300 irqreturn_t
t3_sge_intr_msix(int irq
, void *cookie
);
302 #endif /* __T3_ADAPTER_H__ */