cxgb3: extend copyrights to 2008
[deliverable/linux.git] / drivers / net / cxgb3 / adapter.h
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4d22de3e 1/*
a02d44a0 2 * Copyright (c) 2003-2008 Chelsio, Inc. All rights reserved.
4d22de3e 3 *
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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:
4d22de3e 9 *
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10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
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31 */
32
33/* This file should not be included directly. Include common.h instead. */
34
35#ifndef __T3_ADAPTER_H__
36#define __T3_ADAPTER_H__
37
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>
a13fbee0 43#include <linux/mutex.h>
1977f032 44#include <linux/bitops.h>
b47385bd 45#include <linux/inet_lro.h>
4d22de3e 46#include "t3cdev.h"
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47#include <asm/io.h>
48
4d22de3e 49struct vlan_group;
5fbf816f 50struct adapter;
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51struct sge_qset;
52
4d22de3e 53struct port_info {
5fbf816f 54 struct adapter *adapter;
4d22de3e 55 struct vlan_group *vlan_grp;
bea3348e 56 struct sge_qset *qs;
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57 u8 port_id;
58 u8 rx_csum_offload;
59 u8 nqsets;
60 u8 first_qset;
61 struct cphy phy;
62 struct cmac mac;
63 struct link_config link_config;
64 struct net_device_stats netstats;
65 int activity;
66};
67
68enum { /* adapter flags */
69 FULL_INIT_DONE = (1 << 0),
70 USING_MSI = (1 << 1),
71 USING_MSIX = (1 << 2),
14ab9892 72 QUEUES_BOUND = (1 << 3),
b881955b 73 TP_PARITY_INIT = (1 << 4),
48c4b6db 74 NAPI_INIT = (1 << 5),
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75};
76
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77struct fl_pg_chunk {
78 struct page *page;
79 void *va;
80 unsigned int offset;
81};
82
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83struct rx_desc;
84struct rx_sw_desc;
85
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86struct 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 */
7385ecf3 95 unsigned int order; /* order of page allocations */
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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 */
e0994eb1 101 unsigned long alloc_failed; /* # of times buffer allocation failed */
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102};
103
104/*
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.
107 */
108# define RX_BUNDLE_SIZE 8
109
110struct rsp_desc;
111
112struct 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 */
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120 unsigned int rx_recycle_buf; /* whether recycling occurred
121 within current sop-eop */
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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 */
147e70e6 126 struct sk_buff_head rx_queue; /* offload packet receive queue */
7385ecf3 127 struct sk_buff *pg_skb; /* used to build frag list in napi handler */
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128
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 */
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139 unsigned long starved;
140 unsigned long restarted;
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141};
142
143struct tx_desc;
144struct tx_sw_desc;
145
146struct 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 */
167};
168
169enum { /* 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 */
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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 */
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178
179 SGE_PSTAT_MAX /* must be last */
180};
181
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182#define T3_MAX_LRO_SES 8
183#define T3_MAX_LRO_MAX_PKTS 64
184
4d22de3e 185struct sge_qset { /* an SGE queue set */
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186 struct adapter *adap;
187 struct napi_struct napi;
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188 struct sge_rspq rspq;
189 struct sge_fl fl[SGE_RXQ_PER_SET];
190 struct sge_txq txq[SGE_TXQ_PER_SET];
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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;
194 int lro_nfrags;
195 int lro_enabled;
196 int lro_frag_len;
197 void *lro_va;
bea3348e 198 struct net_device *netdev;
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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;
203
204struct sge {
205 struct sge_qset qs[SGE_QSETS];
206 spinlock_t reg_lock; /* guards non-atomic SGE registers (eg context) */
207};
208
209struct adapter {
210 struct t3cdev tdev;
211 struct list_head adapter_list;
212 void __iomem *regs;
213 struct pci_dev *pdev;
214 unsigned long registered_device_map;
215 unsigned long open_device_map;
216 unsigned long flags;
217
218 const char *name;
219 int msg_enable;
220 unsigned int mmio_len;
221
222 struct adapter_params params;
223 unsigned int slow_intr_mask;
224 unsigned long irq_stats[IRQ_NUM_STATS];
225
226 struct {
227 unsigned short vec;
228 char desc[22];
229 } msix_info[SGE_QSETS + 1];
230
231 /* T3 modules */
232 struct sge sge;
233 struct mc7 pmrx;
234 struct mc7 pmtx;
235 struct mc7 cm;
236 struct mc5 mc5;
237
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;
20d3fc11 242 struct work_struct fatal_error_handler_task;
4d22de3e 243
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244 struct dentry *debugfs_root;
245
246 struct mutex mdio_lock;
247 spinlock_t stats_lock;
248 spinlock_t work_lock;
249};
250
251static inline u32 t3_read_reg(struct adapter *adapter, u32 reg_addr)
252{
253 u32 val = readl(adapter->regs + reg_addr);
254
255 CH_DBG(adapter, MMIO, "read register 0x%x value 0x%x\n", reg_addr, val);
256 return val;
257}
258
259static inline void t3_write_reg(struct adapter *adapter, u32 reg_addr, u32 val)
260{
261 CH_DBG(adapter, MMIO, "setting register 0x%x to 0x%x\n", reg_addr, val);
262 writel(val, adapter->regs + reg_addr);
263}
264
265static inline struct port_info *adap2pinfo(struct adapter *adap, int idx)
266{
267 return netdev_priv(adap->port[idx]);
268}
269
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270#define OFFLOAD_DEVMAP_BIT 15
271
272#define tdev2adap(d) container_of(d, struct adapter, tdev)
273
274static inline int offload_running(struct adapter *adapter)
275{
276 return test_bit(OFFLOAD_DEVMAP_BIT, &adapter->open_device_map);
277}
278
279int t3_offload_tx(struct t3cdev *tdev, struct sk_buff *skb);
280
281void t3_os_ext_intr_handler(struct adapter *adapter);
282void t3_os_link_changed(struct adapter *adapter, int port_id, int link_status,
283 int speed, int duplex, int fc);
04497982 284void t3_os_phymod_changed(struct adapter *adap, int port_id);
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285
286void t3_sge_start(struct adapter *adap);
287void t3_sge_stop(struct adapter *adap);
0ca41c04 288void t3_stop_sge_timers(struct adapter *adap);
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289void t3_free_sge_resources(struct adapter *adap);
290void t3_sge_err_intr_handler(struct adapter *adapter);
7c239975 291irq_handler_t t3_intr_handler(struct adapter *adap, int polling);
4d22de3e 292int t3_eth_xmit(struct sk_buff *skb, struct net_device *dev);
14ab9892 293int t3_mgmt_tx(struct adapter *adap, struct sk_buff *skb);
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294void t3_update_qset_coalesce(struct sge_qset *qs, const struct qset_params *p);
295int t3_sge_alloc_qset(struct adapter *adapter, unsigned int id, int nports,
296 int irq_vec_idx, const struct qset_params *p,
bea3348e 297 int ntxq, struct net_device *dev);
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298int t3_get_desc(const struct sge_qset *qs, unsigned int qnum, unsigned int idx,
299 unsigned char *data);
300irqreturn_t t3_sge_intr_msix(int irq, void *cookie);
301
302#endif /* __T3_ADAPTER_H__ */
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