e1000: FIX: Don't limit descriptor size to 4kb for PCI-E adapters
[linux-2.6-block.git] / drivers / net / e1000 / e1000.h
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1/*******************************************************************************
2
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3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
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
1da177e4 13 more details.
0abb6eb1 14
1da177e4 15 You should have received a copy of the GNU General Public License along with
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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
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22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
3d41e30a 24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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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>
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36#include <linux/module.h>
37#include <linux/types.h>
38#include <asm/byteorder.h>
39#include <linux/init.h>
40#include <linux/mm.h>
41#include <linux/errno.h>
42#include <linux/ioport.h>
43#include <linux/pci.h>
44#include <linux/kernel.h>
45#include <linux/netdevice.h>
46#include <linux/etherdevice.h>
47#include <linux/skbuff.h>
48#include <linux/delay.h>
49#include <linux/timer.h>
50#include <linux/slab.h>
51#include <linux/vmalloc.h>
52#include <linux/interrupt.h>
53#include <linux/string.h>
54#include <linux/pagemap.h>
55#include <linux/dma-mapping.h>
56#include <linux/bitops.h>
57#include <asm/io.h>
58#include <asm/irq.h>
59#include <linux/capability.h>
60#include <linux/in.h>
61#include <linux/ip.h>
62#include <linux/tcp.h>
63#include <linux/udp.h>
64#include <net/pkt_sched.h>
65#include <linux/list.h>
66#include <linux/reboot.h>
67#ifdef NETIF_F_TSO
68#include <net/checksum.h>
69#endif
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70#include <linux/mii.h>
71#include <linux/ethtool.h>
72#include <linux/if_vlan.h>
73
74#define BAR_0 0
75#define BAR_1 1
76#define BAR_5 5
77
78#define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
79 PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
80
81struct e1000_adapter;
82
83#include "e1000_hw.h"
84
85#ifdef DBG
86#define E1000_DBG(args...) printk(KERN_DEBUG "e1000: " args)
87#else
88#define E1000_DBG(args...)
89#endif
90
91#define E1000_ERR(args...) printk(KERN_ERR "e1000: " args)
92
93#define PFX "e1000: "
94#define DPRINTK(nlevel, klevel, fmt, args...) \
95 (void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
96 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
97 __FUNCTION__ , ## args))
98
99#define E1000_MAX_INTR 10
100
101/* TX/RX descriptor defines */
102#define E1000_DEFAULT_TXD 256
103#define E1000_MAX_TXD 256
104#define E1000_MIN_TXD 80
105#define E1000_MAX_82544_TXD 4096
106
107#define E1000_DEFAULT_RXD 256
108#define E1000_MAX_RXD 256
109#define E1000_MIN_RXD 80
110#define E1000_MAX_82544_RXD 4096
111
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112/* this is the size past which hardware will drop packets when setting LPE=0 */
113#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
114
1da177e4 115/* Supported Rx Buffer Sizes */
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116#define E1000_RXBUFFER_128 128 /* Used for packet split */
117#define E1000_RXBUFFER_256 256 /* Used for packet split */
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118#define E1000_RXBUFFER_512 512
119#define E1000_RXBUFFER_1024 1024
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120#define E1000_RXBUFFER_2048 2048
121#define E1000_RXBUFFER_4096 4096
122#define E1000_RXBUFFER_8192 8192
123#define E1000_RXBUFFER_16384 16384
124
125/* SmartSpeed delimiters */
126#define E1000_SMARTSPEED_DOWNSHIFT 3
127#define E1000_SMARTSPEED_MAX 15
128
129/* Packet Buffer allocations */
130#define E1000_PBA_BYTES_SHIFT 0xA
131#define E1000_TX_HEAD_ADDR_SHIFT 7
132#define E1000_PBA_TX_MASK 0xFFFF0000
133
134/* Flow Control Watermarks */
135#define E1000_FC_HIGH_DIFF 0x1638 /* High: 5688 bytes below Rx FIFO size */
136#define E1000_FC_LOW_DIFF 0x1640 /* Low: 5696 bytes below Rx FIFO size */
137
138#define E1000_FC_PAUSE_TIME 0x0680 /* 858 usec */
139
140/* How many Tx Descriptors do we need to call netif_wake_queue ? */
141#define E1000_TX_QUEUE_WAKE 16
142/* How many Rx Buffers do we bundle into one write to the hardware ? */
143#define E1000_RX_BUFFER_WRITE 16 /* Must be power of 2 */
144
2648345f 145#define AUTO_ALL_MODES 0
70cf362b 146#define E1000_EEPROM_82544_APM 0x0004
cd94dd0b 147#define E1000_EEPROM_ICH8_APME 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
7bfa4816 172
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173struct e1000_ps_page { struct page *ps_page[PS_PAGE_BUFFERS]; };
174struct e1000_ps_page_dma { uint64_t ps_page_dma[PS_PAGE_BUFFERS]; };
2d7edb92 175
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176struct e1000_tx_ring {
177 /* pointer to the descriptor ring memory */
178 void *desc;
179 /* physical address of the descriptor ring */
180 dma_addr_t dma;
181 /* length of descriptor ring in bytes */
182 unsigned int size;
183 /* number of descriptors in the ring */
184 unsigned int count;
185 /* next descriptor to associate a buffer with */
186 unsigned int next_to_use;
187 /* next descriptor to check for DD status bit */
188 unsigned int next_to_clean;
189 /* array of buffer information structs */
190 struct e1000_buffer *buffer_info;
191
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192 spinlock_t tx_lock;
193 uint16_t tdh;
194 uint16_t tdt;
fd803241 195 boolean_t last_tx_tso;
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196};
197
198struct e1000_rx_ring {
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199 /* pointer to the descriptor ring memory */
200 void *desc;
201 /* physical address of the descriptor ring */
202 dma_addr_t dma;
203 /* length of descriptor ring in bytes */
204 unsigned int size;
205 /* number of descriptors in the ring */
206 unsigned int count;
207 /* next descriptor to associate a buffer with */
208 unsigned int next_to_use;
209 /* next descriptor to check for DD status bit */
210 unsigned int next_to_clean;
211 /* array of buffer information structs */
212 struct e1000_buffer *buffer_info;
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213 /* arrays of page information for packet split */
214 struct e1000_ps_page *ps_page;
215 struct e1000_ps_page_dma *ps_page_dma;
581d708e 216
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217 /* cpu for rx queue */
218 int cpu;
219
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220 uint16_t rdh;
221 uint16_t rdt;
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222};
223
224#define E1000_DESC_UNUSED(R) \
225 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
226 (R)->next_to_clean - (R)->next_to_use - 1)
227
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228#define E1000_RX_DESC_PS(R, i) \
229 (&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
230#define E1000_RX_DESC_EXT(R, i) \
231 (&(((union e1000_rx_desc_extended *)((R).desc))[i]))
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232#define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
233#define E1000_RX_DESC(R, i) E1000_GET_DESC(R, i, e1000_rx_desc)
234#define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc)
235#define E1000_CONTEXT_DESC(R, i) E1000_GET_DESC(R, i, e1000_context_desc)
236
237/* board specific private data structure */
238
239struct e1000_adapter {
240 struct timer_list tx_fifo_stall_timer;
241 struct timer_list watchdog_timer;
242 struct timer_list phy_info_timer;
243 struct vlan_group *vlgrp;
8fc897b0 244 uint16_t mng_vlan_id;
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245 uint32_t bd_number;
246 uint32_t rx_buffer_len;
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247 uint32_t wol;
248 uint32_t smartspeed;
249 uint32_t en_mng_pt;
250 uint16_t link_speed;
251 uint16_t link_duplex;
252 spinlock_t stats_lock;
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253#ifdef CONFIG_E1000_NAPI
254 spinlock_t tx_queue_lock;
255#endif
1da177e4 256 atomic_t irq_sem;
87041639 257 struct work_struct reset_task;
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258 uint8_t fc_autoneg;
259
260 struct timer_list blink_timer;
261 unsigned long led_status;
262
263 /* TX */
581d708e 264 struct e1000_tx_ring *tx_ring; /* One per active queue */
f56799ea 265 unsigned long tx_queue_len;
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266 uint32_t txd_cmd;
267 uint32_t tx_int_delay;
268 uint32_t tx_abs_int_delay;
269 uint32_t gotcl;
270 uint64_t gotcl_old;
271 uint64_t tpt_old;
272 uint64_t colc_old;
6b7660cd 273 uint32_t tx_timeout_count;
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274 uint32_t tx_fifo_head;
275 uint32_t tx_head_addr;
276 uint32_t tx_fifo_size;
66a2b0a3 277 uint8_t tx_timeout_factor;
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278 atomic_t tx_fifo_stall;
279 boolean_t pcix_82544;
280 boolean_t detect_tx_hung;
281
282 /* RX */
2d7edb92 283#ifdef CONFIG_E1000_NAPI
581d708e 284 boolean_t (*clean_rx) (struct e1000_adapter *adapter,
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285 struct e1000_rx_ring *rx_ring,
286 int *work_done, int work_to_do);
2d7edb92 287#else
581d708e 288 boolean_t (*clean_rx) (struct e1000_adapter *adapter,
0f15a8fa 289 struct e1000_rx_ring *rx_ring);
2d7edb92 290#endif
581d708e 291 void (*alloc_rx_buf) (struct e1000_adapter *adapter,
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292 struct e1000_rx_ring *rx_ring,
293 int cleaned_count);
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294 struct e1000_rx_ring *rx_ring; /* One per active queue */
295#ifdef CONFIG_E1000_NAPI
296 struct net_device *polling_netdev; /* One per active queue */
581d708e 297#endif
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298 int num_tx_queues;
299 int num_rx_queues;
581d708e 300
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301 uint64_t hw_csum_err;
302 uint64_t hw_csum_good;
e4c811c9 303 uint64_t rx_hdr_split;
6b7660cd 304 uint32_t alloc_rx_buff_failed;
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305 uint32_t rx_int_delay;
306 uint32_t rx_abs_int_delay;
307 boolean_t rx_csum;
e4c811c9 308 unsigned int rx_ps_pages;
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309 uint32_t gorcl;
310 uint64_t gorcl_old;
2d7edb92 311 uint16_t rx_ps_bsize0;
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312
313 /* Interrupt Throttle Rate */
314 uint32_t itr;
315
316 /* OS defined structs */
317 struct net_device *netdev;
318 struct pci_dev *pdev;
319 struct net_device_stats net_stats;
320
321 /* structs defined in e1000_hw.h */
322 struct e1000_hw hw;
323 struct e1000_hw_stats stats;
324 struct e1000_phy_info phy_info;
325 struct e1000_phy_stats phy_stats;
326
327 uint32_t test_icr;
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328 struct e1000_tx_ring test_tx_ring;
329 struct e1000_rx_ring test_rx_ring;
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330
331
87041639 332 uint32_t *config_space;
1da177e4 333 int msg_enable;
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334#ifdef CONFIG_PCI_MSI
335 boolean_t have_msi;
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336#endif
337 /* to not mess up cache alignment, always add to the bottom */
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338#ifdef NETIF_F_TSO
339 boolean_t tso_force;
fa4f7ef3 340#endif
9a53a202 341 boolean_t smart_power_down; /* phy smart power down */
120cd576 342 boolean_t quad_port_a;
2db10a08 343 unsigned long flags;
120cd576 344 uint32_t eeprom_wol;
1da177e4 345};
30dcbf29 346
2db10a08 347enum e1000_state_t {
1314bbf3 348 __E1000_TESTING,
2db10a08 349 __E1000_RESETTING,
1314bbf3 350 __E1000_DOWN
2db10a08 351};
30dcbf29 352
1da177e4 353#endif /* _E1000_H_ */