ixgbe: fix unmap length bug
[deliverable/linux.git] / drivers / net / igb / igb.h
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1/*******************************************************************************
2
3 Intel(R) Gigabit Ethernet Linux driver
86d5d38f 4 Copyright(c) 2007-2009 Intel Corporation.
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5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
9
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 more details.
14
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
28
29/* Linux PRO/1000 Ethernet Driver main header file */
30
31#ifndef _IGB_H_
32#define _IGB_H_
33
34#include "e1000_mac.h"
35#include "e1000_82575.h"
36
38c845c7 37#include <linux/clocksource.h>
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38#include <linux/timecompare.h>
39#include <linux/net_tstamp.h>
38c845c7 40
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41struct igb_adapter;
42
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43/* ((1000000000ns / (6000ints/s * 1024ns)) << 2 = 648 */
44#define IGB_START_ITR 648
9d5c8243 45
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46/* TX/RX descriptor defines */
47#define IGB_DEFAULT_TXD 256
48#define IGB_MIN_TXD 80
49#define IGB_MAX_TXD 4096
50
51#define IGB_DEFAULT_RXD 256
52#define IGB_MIN_RXD 80
53#define IGB_MAX_RXD 4096
54
55#define IGB_DEFAULT_ITR 3 /* dynamic */
56#define IGB_MAX_ITR_USECS 10000
57#define IGB_MIN_ITR_USECS 10
58
59/* Transmit and receive queues */
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60#define IGB_MAX_RX_QUEUES (adapter->vfs_allocated_count ? \
61 (adapter->vfs_allocated_count > 6 ? 1 : 2) : 4)
62#define IGB_MAX_TX_QUEUES IGB_MAX_RX_QUEUES
63#define IGB_ABS_MAX_TX_QUEUES 4
9d5c8243 64
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65#define IGB_MAX_VF_MC_ENTRIES 30
66#define IGB_MAX_VF_FUNCTIONS 8
67#define IGB_MAX_VFTA_ENTRIES 128
68
69struct vf_data_storage {
70 unsigned char vf_mac_addresses[ETH_ALEN];
71 u16 vf_mc_hashes[IGB_MAX_VF_MC_ENTRIES];
72 u16 num_vf_mc_hashes;
73 bool clear_to_send;
74};
75
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76/* RX descriptor control thresholds.
77 * PTHRESH - MAC will consider prefetch if it has fewer than this number of
78 * descriptors available in its onboard memory.
79 * Setting this to 0 disables RX descriptor prefetch.
80 * HTHRESH - MAC will only prefetch if there are at least this many descriptors
81 * available in host memory.
82 * If PTHRESH is 0, this should also be 0.
83 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
84 * descriptors until either it has this many to write back, or the
85 * ITR timer expires.
86 */
87#define IGB_RX_PTHRESH 16
88#define IGB_RX_HTHRESH 8
89#define IGB_RX_WTHRESH 1
90
91/* this is the size past which hardware will drop packets when setting LPE=0 */
92#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
93
94/* Supported Rx Buffer Sizes */
95#define IGB_RXBUFFER_128 128 /* Used for packet split */
96#define IGB_RXBUFFER_256 256 /* Used for packet split */
97#define IGB_RXBUFFER_512 512
98#define IGB_RXBUFFER_1024 1024
99#define IGB_RXBUFFER_2048 2048
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100#define IGB_RXBUFFER_16384 16384
101
e1739522 102#define MAX_STD_JUMBO_FRAME_SIZE 9234
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103
104/* How many Tx Descriptors do we need to call netif_wake_queue ? */
105#define IGB_TX_QUEUE_WAKE 16
106/* How many Rx Buffers do we bundle into one write to the hardware ? */
107#define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */
108
109#define AUTO_ALL_MODES 0
110#define IGB_EEPROM_APME 0x0400
111
112#ifndef IGB_MASTER_SLAVE
113/* Switch to override PHY master/slave setting */
114#define IGB_MASTER_SLAVE e1000_ms_hw_default
115#endif
116
117#define IGB_MNG_VLAN_NONE -1
118
119/* wrapper around a pointer to a socket buffer,
120 * so a DMA handle can be stored along with the buffer */
121struct igb_buffer {
122 struct sk_buff *skb;
123 dma_addr_t dma;
124 union {
125 /* TX */
126 struct {
127 unsigned long time_stamp;
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128 u16 length;
129 u16 next_to_watch;
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130 };
131 /* RX */
132 struct {
133 struct page *page;
134 u64 page_dma;
bf36c1a0 135 unsigned int page_offset;
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136 };
137 };
138};
139
8c0ab70a 140struct igb_tx_queue_stats {
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141 u64 packets;
142 u64 bytes;
143};
144
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145struct igb_rx_queue_stats {
146 u64 packets;
147 u64 bytes;
148 u64 drops;
149};
150
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151struct igb_ring {
152 struct igb_adapter *adapter; /* backlink */
153 void *desc; /* descriptor ring memory */
154 dma_addr_t dma; /* phys address of the ring */
155 unsigned int size; /* length of desc. ring in bytes */
156 unsigned int count; /* number of desc. in the ring */
157 u16 next_to_use;
158 u16 next_to_clean;
159 u16 head;
160 u16 tail;
161 struct igb_buffer *buffer_info; /* array of buffer info structs */
162
163 u32 eims_value;
164 u32 itr_val;
165 u16 itr_register;
166 u16 cpu;
167
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168 u16 queue_index;
169 u16 reg_idx;
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170 unsigned int total_bytes;
171 unsigned int total_packets;
172
173 union {
174 /* TX */
175 struct {
8c0ab70a 176 struct igb_tx_queue_stats tx_stats;
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177 bool detect_tx_hung;
178 };
179 /* RX */
180 struct {
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181 struct igb_rx_queue_stats rx_stats;
182 u64 rx_queue_drops;
9d5c8243 183 struct napi_struct napi;
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184 int set_itr;
185 struct igb_ring *buddy;
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186 };
187 };
188
189 char name[IFNAMSIZ + 5];
190};
191
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192#define E1000_RX_DESC_ADV(R, i) \
193 (&(((union e1000_adv_rx_desc *)((R).desc))[i]))
194#define E1000_TX_DESC_ADV(R, i) \
195 (&(((union e1000_adv_tx_desc *)((R).desc))[i]))
196#define E1000_TX_CTXTDESC_ADV(R, i) \
197 (&(((struct e1000_adv_tx_context_desc *)((R).desc))[i]))
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198
199/* board specific private data structure */
200
201struct igb_adapter {
202 struct timer_list watchdog_timer;
203 struct timer_list phy_info_timer;
204 struct vlan_group *vlgrp;
205 u16 mng_vlan_id;
206 u32 bd_number;
207 u32 rx_buffer_len;
208 u32 wol;
209 u32 en_mng_pt;
210 u16 link_speed;
211 u16 link_duplex;
212 unsigned int total_tx_bytes;
213 unsigned int total_tx_packets;
214 unsigned int total_rx_bytes;
215 unsigned int total_rx_packets;
216 /* Interrupt Throttle Rate */
217 u32 itr;
218 u32 itr_setting;
219 u16 tx_itr;
220 u16 rx_itr;
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221
222 struct work_struct reset_task;
223 struct work_struct watchdog_task;
224 bool fc_autoneg;
225 u8 tx_timeout_factor;
226 struct timer_list blink_timer;
227 unsigned long led_status;
228
229 /* TX */
230 struct igb_ring *tx_ring; /* One per active queue */
231 unsigned int restart_queue;
232 unsigned long tx_queue_len;
233 u32 txd_cmd;
234 u32 gotc;
235 u64 gotc_old;
236 u64 tpt_old;
237 u64 colc_old;
238 u32 tx_timeout_count;
239
240 /* RX */
241 struct igb_ring *rx_ring; /* One per active queue */
242 int num_tx_queues;
243 int num_rx_queues;
244
245 u64 hw_csum_err;
246 u64 hw_csum_good;
9d5c8243 247 u32 alloc_rx_buff_failed;
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248 u32 gorc;
249 u64 gorc_old;
250 u16 rx_ps_hdr_size;
251 u32 max_frame_size;
252 u32 min_frame_size;
253
254 /* OS defined structs */
255 struct net_device *netdev;
256 struct napi_struct napi;
257 struct pci_dev *pdev;
258 struct net_device_stats net_stats;
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259 struct cyclecounter cycles;
260 struct timecounter clock;
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261 struct timecompare compare;
262 struct hwtstamp_config hwtstamp_config;
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263
264 /* structs defined in e1000_hw.h */
265 struct e1000_hw hw;
266 struct e1000_hw_stats stats;
267 struct e1000_phy_info phy_info;
268 struct e1000_phy_stats phy_stats;
269
270 u32 test_icr;
271 struct igb_ring test_tx_ring;
272 struct igb_ring test_rx_ring;
273
274 int msg_enable;
275 struct msix_entry *msix_entries;
276 u32 eims_enable_mask;
844290e5 277 u32 eims_other;
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278
279 /* to not mess up cache alignment, always add to the bottom */
280 unsigned long state;
7dfc16fa 281 unsigned int flags;
9d5c8243 282 u32 eeprom_wol;
42bfd33a 283
1bfaf07b 284 struct igb_ring *multi_tx_table[IGB_ABS_MAX_TX_QUEUES];
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285 unsigned int tx_ring_count;
286 unsigned int rx_ring_count;
1bfaf07b 287 unsigned int vfs_allocated_count;
4ae196df 288 struct vf_data_storage *vf_data;
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289};
290
7dfc16fa 291#define IGB_FLAG_HAS_MSI (1 << 0)
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292#define IGB_FLAG_DCA_ENABLED (1 << 1)
293#define IGB_FLAG_QUAD_PORT_A (1 << 2)
294#define IGB_FLAG_NEED_CTX_IDX (1 << 3)
7beb0146 295#define IGB_FLAG_RX_CSUM_DISABLED (1 << 4)
7dfc16fa 296
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297enum e1000_state_t {
298 __IGB_TESTING,
299 __IGB_RESETTING,
300 __IGB_DOWN
301};
302
303enum igb_boards {
304 board_82575,
305};
306
307extern char igb_driver_name[];
308extern char igb_driver_version[];
309
310extern char *igb_get_hw_dev_name(struct e1000_hw *hw);
311extern int igb_up(struct igb_adapter *);
312extern void igb_down(struct igb_adapter *);
313extern void igb_reinit_locked(struct igb_adapter *);
314extern void igb_reset(struct igb_adapter *);
315extern int igb_set_spd_dplx(struct igb_adapter *, u16);
316extern int igb_setup_tx_resources(struct igb_adapter *, struct igb_ring *);
317extern int igb_setup_rx_resources(struct igb_adapter *, struct igb_ring *);
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318extern void igb_free_tx_resources(struct igb_ring *);
319extern void igb_free_rx_resources(struct igb_ring *);
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320extern void igb_update_stats(struct igb_adapter *);
321extern void igb_set_ethtool_ops(struct net_device *);
322
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323static inline s32 igb_reset_phy(struct e1000_hw *hw)
324{
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325 if (hw->phy.ops.reset)
326 return hw->phy.ops.reset(hw);
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327
328 return 0;
329}
330
331static inline s32 igb_read_phy_reg(struct e1000_hw *hw, u32 offset, u16 *data)
332{
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333 if (hw->phy.ops.read_reg)
334 return hw->phy.ops.read_reg(hw, offset, data);
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335
336 return 0;
337}
338
339static inline s32 igb_write_phy_reg(struct e1000_hw *hw, u32 offset, u16 data)
340{
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341 if (hw->phy.ops.write_reg)
342 return hw->phy.ops.write_reg(hw, offset, data);
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343
344 return 0;
345}
346
347static inline s32 igb_get_phy_info(struct e1000_hw *hw)
348{
349 if (hw->phy.ops.get_phy_info)
350 return hw->phy.ops.get_phy_info(hw);
351
352 return 0;
353}
354
9d5c8243 355#endif /* _IGB_H_ */
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