Fix dnotify/close race
[linux-2.6.22.y-op.git] / drivers / net / e1000 / e1000.h
blob16a6edfeba41d38e9d4603038b3406aefedd84f4
1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 Intel Corporation.
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.
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.
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.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
22 Contact Information:
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
30 /* Linux PRO/1000 Ethernet Driver main header file */
32 #ifndef _E1000_H_
33 #define _E1000_H_
35 #include <linux/stddef.h>
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/ipv6.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 #include <net/checksum.h>
69 #include <linux/mii.h>
70 #include <linux/ethtool.h>
71 #include <linux/if_vlan.h>
73 #define BAR_0 0
74 #define BAR_1 1
75 #define BAR_5 5
77 #define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
78 PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
80 struct e1000_adapter;
82 #include "e1000_hw.h"
84 #ifdef DBG
85 #define E1000_DBG(args...) printk(KERN_DEBUG "e1000: " args)
86 #else
87 #define E1000_DBG(args...)
88 #endif
90 #define E1000_ERR(args...) printk(KERN_ERR "e1000: " args)
92 #define PFX "e1000: "
93 #define DPRINTK(nlevel, klevel, fmt, args...) \
94 (void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
95 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
96 __FUNCTION__ , ## args))
98 #define E1000_MAX_INTR 10
100 /* TX/RX descriptor defines */
101 #define E1000_DEFAULT_TXD 256
102 #define E1000_MAX_TXD 256
103 #define E1000_MIN_TXD 80
104 #define E1000_MAX_82544_TXD 4096
106 #define E1000_DEFAULT_RXD 256
107 #define E1000_MAX_RXD 256
108 #define E1000_MIN_RXD 80
109 #define E1000_MAX_82544_RXD 4096
111 /* this is the size past which hardware will drop packets when setting LPE=0 */
112 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
114 /* Supported Rx Buffer Sizes */
115 #define E1000_RXBUFFER_128 128 /* Used for packet split */
116 #define E1000_RXBUFFER_256 256 /* Used for packet split */
117 #define E1000_RXBUFFER_512 512
118 #define E1000_RXBUFFER_1024 1024
119 #define E1000_RXBUFFER_2048 2048
120 #define E1000_RXBUFFER_4096 4096
121 #define E1000_RXBUFFER_8192 8192
122 #define E1000_RXBUFFER_16384 16384
124 /* SmartSpeed delimiters */
125 #define E1000_SMARTSPEED_DOWNSHIFT 3
126 #define E1000_SMARTSPEED_MAX 15
128 /* Packet Buffer allocations */
129 #define E1000_PBA_BYTES_SHIFT 0xA
130 #define E1000_TX_HEAD_ADDR_SHIFT 7
131 #define E1000_PBA_TX_MASK 0xFFFF0000
133 /* Flow Control Watermarks */
134 #define E1000_FC_HIGH_DIFF 0x1638 /* High: 5688 bytes below Rx FIFO size */
135 #define E1000_FC_LOW_DIFF 0x1640 /* Low: 5696 bytes below Rx FIFO size */
137 #define E1000_FC_PAUSE_TIME 0x0680 /* 858 usec */
139 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
140 #define E1000_TX_QUEUE_WAKE 16
141 /* How many Rx Buffers do we bundle into one write to the hardware ? */
142 #define E1000_RX_BUFFER_WRITE 16 /* Must be power of 2 */
144 #define AUTO_ALL_MODES 0
145 #define E1000_EEPROM_82544_APM 0x0004
146 #define E1000_EEPROM_ICH8_APME 0x0004
147 #define E1000_EEPROM_APME 0x0400
149 #ifndef E1000_MASTER_SLAVE
150 /* Switch to override PHY master/slave setting */
151 #define E1000_MASTER_SLAVE e1000_ms_hw_default
152 #endif
154 #define E1000_MNG_VLAN_NONE -1
155 /* Number of packet split data buffers (not including the header buffer) */
156 #define PS_PAGE_BUFFERS MAX_PS_BUFFERS-1
158 /* wrapper around a pointer to a socket buffer,
159 * so a DMA handle can be stored along with the buffer */
160 struct e1000_buffer {
161 struct sk_buff *skb;
162 dma_addr_t dma;
163 unsigned long time_stamp;
164 uint16_t length;
165 uint16_t next_to_watch;
169 struct e1000_ps_page { struct page *ps_page[PS_PAGE_BUFFERS]; };
170 struct e1000_ps_page_dma { uint64_t ps_page_dma[PS_PAGE_BUFFERS]; };
172 struct e1000_tx_ring {
173 /* pointer to the descriptor ring memory */
174 void *desc;
175 /* physical address of the descriptor ring */
176 dma_addr_t dma;
177 /* length of descriptor ring in bytes */
178 unsigned int size;
179 /* number of descriptors in the ring */
180 unsigned int count;
181 /* next descriptor to associate a buffer with */
182 unsigned int next_to_use;
183 /* next descriptor to check for DD status bit */
184 unsigned int next_to_clean;
185 /* array of buffer information structs */
186 struct e1000_buffer *buffer_info;
188 spinlock_t tx_lock;
189 uint16_t tdh;
190 uint16_t tdt;
191 boolean_t last_tx_tso;
194 struct e1000_rx_ring {
195 /* pointer to the descriptor ring memory */
196 void *desc;
197 /* physical address of the descriptor ring */
198 dma_addr_t dma;
199 /* length of descriptor ring in bytes */
200 unsigned int size;
201 /* number of descriptors in the ring */
202 unsigned int count;
203 /* next descriptor to associate a buffer with */
204 unsigned int next_to_use;
205 /* next descriptor to check for DD status bit */
206 unsigned int next_to_clean;
207 /* array of buffer information structs */
208 struct e1000_buffer *buffer_info;
209 /* arrays of page information for packet split */
210 struct e1000_ps_page *ps_page;
211 struct e1000_ps_page_dma *ps_page_dma;
213 /* cpu for rx queue */
214 int cpu;
216 uint16_t rdh;
217 uint16_t rdt;
220 #define E1000_DESC_UNUSED(R) \
221 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
222 (R)->next_to_clean - (R)->next_to_use - 1)
224 #define E1000_RX_DESC_PS(R, i) \
225 (&(((union e1000_rx_desc_packet_split *)((R).desc))[i]))
226 #define E1000_RX_DESC_EXT(R, i) \
227 (&(((union e1000_rx_desc_extended *)((R).desc))[i]))
228 #define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
229 #define E1000_RX_DESC(R, i) E1000_GET_DESC(R, i, e1000_rx_desc)
230 #define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc)
231 #define E1000_CONTEXT_DESC(R, i) E1000_GET_DESC(R, i, e1000_context_desc)
233 /* board specific private data structure */
235 struct e1000_adapter {
236 struct timer_list tx_fifo_stall_timer;
237 struct timer_list watchdog_timer;
238 struct timer_list phy_info_timer;
239 struct vlan_group *vlgrp;
240 uint16_t mng_vlan_id;
241 uint32_t bd_number;
242 uint32_t rx_buffer_len;
243 uint32_t wol;
244 uint32_t smartspeed;
245 uint32_t en_mng_pt;
246 uint16_t link_speed;
247 uint16_t link_duplex;
248 spinlock_t stats_lock;
249 #ifdef CONFIG_E1000_NAPI
250 spinlock_t tx_queue_lock;
251 #endif
252 atomic_t irq_sem;
253 unsigned int total_tx_bytes;
254 unsigned int total_tx_packets;
255 unsigned int total_rx_bytes;
256 unsigned int total_rx_packets;
257 /* Interrupt Throttle Rate */
258 uint32_t itr;
259 uint32_t itr_setting;
260 uint16_t tx_itr;
261 uint16_t rx_itr;
263 struct work_struct reset_task;
264 uint8_t fc_autoneg;
266 struct timer_list blink_timer;
267 unsigned long led_status;
269 /* TX */
270 struct e1000_tx_ring *tx_ring; /* One per active queue */
271 unsigned int restart_queue;
272 unsigned long tx_queue_len;
273 uint32_t txd_cmd;
274 uint32_t tx_int_delay;
275 uint32_t tx_abs_int_delay;
276 uint32_t gotcl;
277 uint64_t gotcl_old;
278 uint64_t tpt_old;
279 uint64_t colc_old;
280 uint32_t tx_timeout_count;
281 uint32_t tx_fifo_head;
282 uint32_t tx_head_addr;
283 uint32_t tx_fifo_size;
284 uint8_t tx_timeout_factor;
285 atomic_t tx_fifo_stall;
286 boolean_t pcix_82544;
287 boolean_t detect_tx_hung;
289 /* RX */
290 #ifdef CONFIG_E1000_NAPI
291 boolean_t (*clean_rx) (struct e1000_adapter *adapter,
292 struct e1000_rx_ring *rx_ring,
293 int *work_done, int work_to_do);
294 #else
295 boolean_t (*clean_rx) (struct e1000_adapter *adapter,
296 struct e1000_rx_ring *rx_ring);
297 #endif
298 void (*alloc_rx_buf) (struct e1000_adapter *adapter,
299 struct e1000_rx_ring *rx_ring,
300 int cleaned_count);
301 struct e1000_rx_ring *rx_ring; /* One per active queue */
302 #ifdef CONFIG_E1000_NAPI
303 struct net_device *polling_netdev; /* One per active queue */
304 #endif
305 int num_tx_queues;
306 int num_rx_queues;
308 uint64_t hw_csum_err;
309 uint64_t hw_csum_good;
310 uint64_t rx_hdr_split;
311 uint32_t alloc_rx_buff_failed;
312 uint32_t rx_int_delay;
313 uint32_t rx_abs_int_delay;
314 boolean_t rx_csum;
315 unsigned int rx_ps_pages;
316 uint32_t gorcl;
317 uint64_t gorcl_old;
318 uint16_t rx_ps_bsize0;
321 /* OS defined structs */
322 struct net_device *netdev;
323 struct pci_dev *pdev;
324 struct net_device_stats net_stats;
326 /* structs defined in e1000_hw.h */
327 struct e1000_hw hw;
328 struct e1000_hw_stats stats;
329 struct e1000_phy_info phy_info;
330 struct e1000_phy_stats phy_stats;
332 uint32_t test_icr;
333 struct e1000_tx_ring test_tx_ring;
334 struct e1000_rx_ring test_rx_ring;
336 int msg_enable;
337 boolean_t have_msi;
339 /* to not mess up cache alignment, always add to the bottom */
340 boolean_t tso_force;
341 boolean_t smart_power_down; /* phy smart power down */
342 boolean_t quad_port_a;
343 unsigned long flags;
344 uint32_t eeprom_wol;
347 enum e1000_state_t {
348 __E1000_TESTING,
349 __E1000_RESETTING,
350 __E1000_DOWN
353 #endif /* _E1000_H_ */