[PATCH] e1000: Fix TX queue length based on link speed
[deliverable/linux.git] / drivers / net / e1000 / e1000.h
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1/*******************************************************************************
2
3
2648345f 4 Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
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5
6 This program is free software; you can redistribute it and/or modify it
7 under the terms of the GNU General Public License as published by the Free
8 Software Foundation; either version 2 of the License, or (at your option)
9 any later version.
10
11 This program is distributed in the hope that it will be useful, but WITHOUT
12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 more details.
15
16 You should have received a copy of the GNU General Public License along with
17 this program; if not, write to the Free Software Foundation, Inc., 59
18 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19
20 The full GNU General Public License is included in this distribution in the
21 file called LICENSE.
22
23 Contact Information:
24 Linux NICS <linux.nics@intel.com>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26
27*******************************************************************************/
28
29
30/* Linux PRO/1000 Ethernet Driver main header file */
31
32#ifndef _E1000_H_
33#define _E1000_H_
34
35#include <linux/stddef.h>
36#include <linux/config.h>
37#include <linux/module.h>
38#include <linux/types.h>
39#include <asm/byteorder.h>
40#include <linux/init.h>
41#include <linux/mm.h>
42#include <linux/errno.h>
43#include <linux/ioport.h>
44#include <linux/pci.h>
45#include <linux/kernel.h>
46#include <linux/netdevice.h>
47#include <linux/etherdevice.h>
48#include <linux/skbuff.h>
49#include <linux/delay.h>
50#include <linux/timer.h>
51#include <linux/slab.h>
52#include <linux/vmalloc.h>
53#include <linux/interrupt.h>
54#include <linux/string.h>
55#include <linux/pagemap.h>
56#include <linux/dma-mapping.h>
57#include <linux/bitops.h>
58#include <asm/io.h>
59#include <asm/irq.h>
60#include <linux/capability.h>
61#include <linux/in.h>
62#include <linux/ip.h>
63#include <linux/tcp.h>
64#include <linux/udp.h>
65#include <net/pkt_sched.h>
66#include <linux/list.h>
67#include <linux/reboot.h>
68#ifdef NETIF_F_TSO
69#include <net/checksum.h>
70#endif
71#include <linux/workqueue.h>
72#include <linux/mii.h>
73#include <linux/ethtool.h>
74#include <linux/if_vlan.h>
75
76#define BAR_0 0
77#define BAR_1 1
78#define BAR_5 5
79
80#define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
81 PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
82
83struct e1000_adapter;
84
85#include "e1000_hw.h"
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86#ifdef CONFIG_E1000_MQ
87#include <linux/cpu.h>
88#include <linux/smp.h>
89#endif
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90
91#ifdef DBG
92#define E1000_DBG(args...) printk(KERN_DEBUG "e1000: " args)
93#else
94#define E1000_DBG(args...)
95#endif
96
97#define E1000_ERR(args...) printk(KERN_ERR "e1000: " args)
98
99#define PFX "e1000: "
100#define DPRINTK(nlevel, klevel, fmt, args...) \
101 (void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
102 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
103 __FUNCTION__ , ## args))
104
105#define E1000_MAX_INTR 10
106
107/* TX/RX descriptor defines */
108#define E1000_DEFAULT_TXD 256
109#define E1000_MAX_TXD 256
110#define E1000_MIN_TXD 80
111#define E1000_MAX_82544_TXD 4096
112
113#define E1000_DEFAULT_RXD 256
114#define E1000_MAX_RXD 256
115#define E1000_MIN_RXD 80
116#define E1000_MAX_82544_RXD 4096
117
118/* Supported Rx Buffer Sizes */
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119#define E1000_RXBUFFER_128 128 /* Used for packet split */
120#define E1000_RXBUFFER_256 256 /* Used for packet split */
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121#define E1000_RXBUFFER_2048 2048
122#define E1000_RXBUFFER_4096 4096
123#define E1000_RXBUFFER_8192 8192
124#define E1000_RXBUFFER_16384 16384
125
126/* SmartSpeed delimiters */
127#define E1000_SMARTSPEED_DOWNSHIFT 3
128#define E1000_SMARTSPEED_MAX 15
129
130/* Packet Buffer allocations */
131#define E1000_PBA_BYTES_SHIFT 0xA
132#define E1000_TX_HEAD_ADDR_SHIFT 7
133#define E1000_PBA_TX_MASK 0xFFFF0000
134
135/* Flow Control Watermarks */
136#define E1000_FC_HIGH_DIFF 0x1638 /* High: 5688 bytes below Rx FIFO size */
137#define E1000_FC_LOW_DIFF 0x1640 /* Low: 5696 bytes below Rx FIFO size */
138
139#define E1000_FC_PAUSE_TIME 0x0680 /* 858 usec */
140
141/* How many Tx Descriptors do we need to call netif_wake_queue ? */
142#define E1000_TX_QUEUE_WAKE 16
143/* How many Rx Buffers do we bundle into one write to the hardware ? */
144#define E1000_RX_BUFFER_WRITE 16 /* Must be power of 2 */
145
2648345f 146#define AUTO_ALL_MODES 0
70cf362b 147#define E1000_EEPROM_82544_APM 0x0004
2648345f 148#define E1000_EEPROM_APME 0x0400
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149
150#ifndef E1000_MASTER_SLAVE
151/* Switch to override PHY master/slave setting */
152#define E1000_MASTER_SLAVE e1000_ms_hw_default
153#endif
154
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155#define E1000_MNG_VLAN_NONE -1
156/* Number of packet split data buffers (not including the header buffer) */
157#define PS_PAGE_BUFFERS MAX_PS_BUFFERS-1
158
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159/* only works for sizes that are powers of 2 */
160#define E1000_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1)))
161
162/* wrapper around a pointer to a socket buffer,
163 * so a DMA handle can be stored along with the buffer */
164struct e1000_buffer {
165 struct sk_buff *skb;
c6963ef5 166 dma_addr_t dma;
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167 unsigned long time_stamp;
168 uint16_t length;
169 uint16_t next_to_watch;
170};
171
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172#ifdef CONFIG_E1000_MQ
173struct e1000_queue_stats {
174 uint64_t packets;
175 uint64_t bytes;
176};
177#endif
178
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179struct e1000_ps_page { struct page *ps_page[PS_PAGE_BUFFERS]; };
180struct e1000_ps_page_dma { uint64_t ps_page_dma[PS_PAGE_BUFFERS]; };
2d7edb92 181
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182struct e1000_tx_ring {
183 /* pointer to the descriptor ring memory */
184 void *desc;
185 /* physical address of the descriptor ring */
186 dma_addr_t dma;
187 /* length of descriptor ring in bytes */
188 unsigned int size;
189 /* number of descriptors in the ring */
190 unsigned int count;
191 /* next descriptor to associate a buffer with */
192 unsigned int next_to_use;
193 /* next descriptor to check for DD status bit */
194 unsigned int next_to_clean;
195 /* array of buffer information structs */
196 struct e1000_buffer *buffer_info;
197
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198 spinlock_t tx_lock;
199 uint16_t tdh;
200 uint16_t tdt;
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201
202 boolean_t last_tx_tso;
203
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204#ifdef CONFIG_E1000_MQ
205 struct e1000_queue_stats tx_stats;
206#endif
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207};
208
209struct e1000_rx_ring {
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210 /* pointer to the descriptor ring memory */
211 void *desc;
212 /* physical address of the descriptor ring */
213 dma_addr_t dma;
214 /* length of descriptor ring in bytes */
215 unsigned int size;
216 /* number of descriptors in the ring */
217 unsigned int count;
218 /* next descriptor to associate a buffer with */
219 unsigned int next_to_use;
220 /* next descriptor to check for DD status bit */
221 unsigned int next_to_clean;
222 /* array of buffer information structs */
223 struct e1000_buffer *buffer_info;
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224 /* arrays of page information for packet split */
225 struct e1000_ps_page *ps_page;
226 struct e1000_ps_page_dma *ps_page_dma;
581d708e 227
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228 struct sk_buff *rx_skb_top;
229 struct sk_buff *rx_skb_prev;
230
231 /* cpu for rx queue */
232 int cpu;
233
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234 uint16_t rdh;
235 uint16_t rdt;
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236#ifdef CONFIG_E1000_MQ
237 struct e1000_queue_stats rx_stats;
238#endif
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239};
240
241#define E1000_DESC_UNUSED(R) \
242 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
243 (R)->next_to_clean - (R)->next_to_use - 1)
244
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245#define E1000_RX_DESC_PS(R, i) \
246 (&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
247#define E1000_RX_DESC_EXT(R, i) \
248 (&(((union e1000_rx_desc_extended *)((R).desc))[i]))
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249#define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
250#define E1000_RX_DESC(R, i) E1000_GET_DESC(R, i, e1000_rx_desc)
251#define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc)
252#define E1000_CONTEXT_DESC(R, i) E1000_GET_DESC(R, i, e1000_context_desc)
253
254/* board specific private data structure */
255
256struct e1000_adapter {
257 struct timer_list tx_fifo_stall_timer;
258 struct timer_list watchdog_timer;
259 struct timer_list phy_info_timer;
260 struct vlan_group *vlgrp;
2d7edb92 261 uint16_t mng_vlan_id;
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262 uint32_t bd_number;
263 uint32_t rx_buffer_len;
264 uint32_t part_num;
265 uint32_t wol;
266 uint32_t smartspeed;
267 uint32_t en_mng_pt;
268 uint16_t link_speed;
269 uint16_t link_duplex;
270 spinlock_t stats_lock;
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271#ifdef CONFIG_E1000_NAPI
272 spinlock_t tx_queue_lock;
273#endif
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274 atomic_t irq_sem;
275 struct work_struct tx_timeout_task;
276 struct work_struct watchdog_task;
277 uint8_t fc_autoneg;
278
279 struct timer_list blink_timer;
280 unsigned long led_status;
281
282 /* TX */
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283 struct e1000_tx_ring *tx_ring; /* One per active queue */
284#ifdef CONFIG_E1000_MQ
285 struct e1000_tx_ring **cpu_tx_ring; /* per-cpu */
286#endif
f56799ea 287 unsigned long tx_queue_len;
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288 uint32_t txd_cmd;
289 uint32_t tx_int_delay;
290 uint32_t tx_abs_int_delay;
291 uint32_t gotcl;
292 uint64_t gotcl_old;
293 uint64_t tpt_old;
294 uint64_t colc_old;
6b7660cd 295 uint32_t tx_timeout_count;
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296 uint32_t tx_fifo_head;
297 uint32_t tx_head_addr;
298 uint32_t tx_fifo_size;
66a2b0a3 299 uint8_t tx_timeout_factor;
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300 atomic_t tx_fifo_stall;
301 boolean_t pcix_82544;
302 boolean_t detect_tx_hung;
303
304 /* RX */
2d7edb92 305#ifdef CONFIG_E1000_NAPI
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306 boolean_t (*clean_rx) (struct e1000_adapter *adapter,
307 struct e1000_rx_ring *rx_ring,
308 int *work_done, int work_to_do);
2d7edb92 309#else
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310 boolean_t (*clean_rx) (struct e1000_adapter *adapter,
311 struct e1000_rx_ring *rx_ring);
2d7edb92 312#endif
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313 void (*alloc_rx_buf) (struct e1000_adapter *adapter,
314 struct e1000_rx_ring *rx_ring);
315 struct e1000_rx_ring *rx_ring; /* One per active queue */
316#ifdef CONFIG_E1000_NAPI
317 struct net_device *polling_netdev; /* One per active queue */
318#endif
319#ifdef CONFIG_E1000_MQ
320 struct net_device **cpu_netdev; /* per-cpu */
321 struct call_async_data_struct rx_sched_call_data;
7bfa4816 322 cpumask_t cpumask;
581d708e 323#endif
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324 int num_tx_queues;
325 int num_rx_queues;
581d708e 326
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327 uint64_t hw_csum_err;
328 uint64_t hw_csum_good;
e4c811c9 329 uint64_t rx_hdr_split;
6b7660cd 330 uint32_t alloc_rx_buff_failed;
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331 uint32_t rx_int_delay;
332 uint32_t rx_abs_int_delay;
333 boolean_t rx_csum;
e4c811c9 334 unsigned int rx_ps_pages;
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335 uint32_t gorcl;
336 uint64_t gorcl_old;
2d7edb92 337 uint16_t rx_ps_bsize0;
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338
339 /* Interrupt Throttle Rate */
340 uint32_t itr;
341
342 /* OS defined structs */
343 struct net_device *netdev;
344 struct pci_dev *pdev;
345 struct net_device_stats net_stats;
346
347 /* structs defined in e1000_hw.h */
348 struct e1000_hw hw;
349 struct e1000_hw_stats stats;
350 struct e1000_phy_info phy_info;
351 struct e1000_phy_stats phy_stats;
352
353 uint32_t test_icr;
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354 struct e1000_tx_ring test_tx_ring;
355 struct e1000_rx_ring test_rx_ring;
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356
357
f56799ea 358 u32 *config_space;
1da177e4 359 int msg_enable;
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360#ifdef CONFIG_PCI_MSI
361 boolean_t have_msi;
362#endif
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363};
364#endif /* _E1000_H_ */
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