1 /*******************************************************************************
3 Intel PRO/10GbE Linux driver
4 Copyright(c) 1999 - 2008 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
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".
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 *******************************************************************************/
32 #include <linux/stddef.h>
33 #include <linux/module.h>
34 #include <linux/types.h>
35 #include <asm/byteorder.h>
36 #include <linux/init.h>
38 #include <linux/errno.h>
39 #include <linux/ioport.h>
40 #include <linux/pci.h>
41 #include <linux/kernel.h>
42 #include <linux/netdevice.h>
43 #include <linux/etherdevice.h>
44 #include <linux/skbuff.h>
45 #include <linux/delay.h>
46 #include <linux/timer.h>
47 #include <linux/slab.h>
48 #include <linux/vmalloc.h>
49 #include <linux/interrupt.h>
50 #include <linux/string.h>
51 #include <linux/pagemap.h>
52 #include <linux/dma-mapping.h>
53 #include <linux/bitops.h>
56 #include <linux/capability.h>
59 #include <linux/tcp.h>
60 #include <linux/udp.h>
61 #include <net/pkt_sched.h>
62 #include <linux/list.h>
63 #include <linux/reboot.h>
64 #include <net/checksum.h>
66 #include <linux/ethtool.h>
67 #include <linux/if_vlan.h>
81 #define IXGB_DBG(fmt, args...) printk(KERN_DEBUG PFX fmt, ##args)
83 #define IXGB_DBG(fmt, args...) \
86 printk(KERN_DEBUG PFX fmt, ##args); \
90 /* TX/RX descriptor defines */
91 #define DEFAULT_TXD 256
95 /* hardware cannot reliably support more than 512 descriptors owned by
96 * hardware descriptor cache otherwise an unreliable ring under heavy
97 * receive load may result */
98 #define DEFAULT_RXD 512
102 /* Supported Rx Buffer Sizes */
103 #define IXGB_RXBUFFER_2048 2048
104 #define IXGB_RXBUFFER_4096 4096
105 #define IXGB_RXBUFFER_8192 8192
106 #define IXGB_RXBUFFER_16384 16384
108 /* How many Rx Buffers do we bundle into one write to the hardware ? */
109 #define IXGB_RX_BUFFER_WRITE 8 /* Must be power of 2 */
111 /* wrapper around a pointer to a socket buffer,
112 * so a DMA handle can be stored along with the buffer */
116 unsigned long time_stamp
;
122 struct ixgb_desc_ring
{
123 /* pointer to the descriptor ring memory */
125 /* physical address of the descriptor ring */
127 /* length of descriptor ring in bytes */
129 /* number of descriptors in the ring */
131 /* next descriptor to associate a buffer with */
132 unsigned int next_to_use
;
133 /* next descriptor to check for DD status bit */
134 unsigned int next_to_clean
;
135 /* array of buffer information structs */
136 struct ixgb_buffer
*buffer_info
;
139 #define IXGB_DESC_UNUSED(R) \
140 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
141 (R)->next_to_clean - (R)->next_to_use - 1)
143 #define IXGB_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
144 #define IXGB_RX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_rx_desc)
145 #define IXGB_TX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_tx_desc)
146 #define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc)
148 /* board specific private data structure */
150 struct ixgb_adapter
{
151 struct timer_list watchdog_timer
;
152 unsigned long active_vlans
[BITS_TO_LONGS(VLAN_N_VID
)];
158 struct work_struct tx_timeout_task
;
161 struct ixgb_desc_ring tx_ring ____cacheline_aligned_in_smp
;
162 unsigned int restart_queue
;
163 unsigned long timeo_start
;
166 u64 hw_csum_tx_error
;
168 u32 tx_timeout_count
;
169 bool tx_int_delay_enable
;
173 struct ixgb_desc_ring rx_ring
;
174 u64 hw_csum_rx_error
;
179 /* OS defined structs */
180 struct napi_struct napi
;
181 struct net_device
*netdev
;
182 struct pci_dev
*pdev
;
184 /* structs defined in ixgb_hw.h */
187 struct ixgb_hw_stats stats
;
188 u32 alloc_rx_buff_failed
;
201 /* Exported from other modules */
202 extern void ixgb_check_options(struct ixgb_adapter
*adapter
);
203 extern void ixgb_set_ethtool_ops(struct net_device
*netdev
);
204 extern char ixgb_driver_name
[];
205 extern const char ixgb_driver_version
[];
207 extern int ixgb_up(struct ixgb_adapter
*adapter
);
208 extern void ixgb_down(struct ixgb_adapter
*adapter
, bool kill_watchdog
);
209 extern void ixgb_reset(struct ixgb_adapter
*adapter
);
210 extern int ixgb_setup_rx_resources(struct ixgb_adapter
*adapter
);
211 extern int ixgb_setup_tx_resources(struct ixgb_adapter
*adapter
);
212 extern void ixgb_free_rx_resources(struct ixgb_adapter
*adapter
);
213 extern void ixgb_free_tx_resources(struct ixgb_adapter
*adapter
);
214 extern void ixgb_update_stats(struct ixgb_adapter
*adapter
);
217 #endif /* _IXGB_H_ */