1 /*******************************************************************************
4 Copyright(c) 1999 - 2006 Intel Corporation. All rights reserved.
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)
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
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.
20 The full GNU General Public License is included in this distribution in the
24 Linux NICS <linux.nics@intel.com>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
32 #include <linux/stddef.h>
33 #include <linux/config.h>
34 #include <linux/module.h>
35 #include <linux/types.h>
36 #include <asm/byteorder.h>
37 #include <linux/init.h>
39 #include <linux/errno.h>
40 #include <linux/ioport.h>
41 #include <linux/pci.h>
42 #include <linux/kernel.h>
43 #include <linux/netdevice.h>
44 #include <linux/etherdevice.h>
45 #include <linux/skbuff.h>
46 #include <linux/delay.h>
47 #include <linux/timer.h>
48 #include <linux/slab.h>
49 #include <linux/vmalloc.h>
50 #include <linux/interrupt.h>
51 #include <linux/string.h>
52 #include <linux/pagemap.h>
53 #include <linux/dma-mapping.h>
54 #include <linux/bitops.h>
57 #include <linux/capability.h>
60 #include <linux/tcp.h>
61 #include <linux/udp.h>
62 #include <net/pkt_sched.h>
63 #include <linux/list.h>
64 #include <linux/reboot.h>
66 #include <net/checksum.h>
69 #include <linux/ethtool.h>
70 #include <linux/if_vlan.h>
82 #define IXGB_DBG(args...) printk(KERN_DEBUG "ixgb: " args)
84 #define IXGB_DBG(args...)
88 #define DPRINTK(nlevel, klevel, fmt, args...) \
89 (void)((NETIF_MSG_##nlevel & adapter->msg_enable) && \
90 printk(KERN_##klevel PFX "%s: %s: " fmt, adapter->netdev->name, \
91 __FUNCTION__ , ## args))
94 /* TX/RX descriptor defines */
95 #define DEFAULT_TXD 256
99 /* hardware cannot reliably support more than 512 descriptors owned by
100 * hardware descrioptor cache otherwise an unreliable ring under heavy
101 * recieve load may result */
102 /* #define DEFAULT_RXD 1024 */
103 /* #define MAX_RXD 4096 */
104 #define DEFAULT_RXD 512
108 /* Supported Rx Buffer Sizes */
109 #define IXGB_RXBUFFER_2048 2048
110 #define IXGB_RXBUFFER_4096 4096
111 #define IXGB_RXBUFFER_8192 8192
112 #define IXGB_RXBUFFER_16384 16384
114 /* How many Tx Descriptors do we need to call netif_wake_queue? */
115 #define IXGB_TX_QUEUE_WAKE 16
117 /* How many Rx Buffers do we bundle into one write to the hardware ? */
118 #define IXGB_RX_BUFFER_WRITE 4 /* Must be power of 2 */
120 /* only works for sizes that are powers of 2 */
121 #define IXGB_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1)))
123 /* wrapper around a pointer to a socket buffer,
124 * so a DMA handle can be stored along with the buffer */
128 unsigned long time_stamp
;
130 uint16_t next_to_watch
;
133 struct ixgb_desc_ring
{
134 /* pointer to the descriptor ring memory */
136 /* physical address of the descriptor ring */
138 /* length of descriptor ring in bytes */
140 /* number of descriptors in the ring */
142 /* next descriptor to associate a buffer with */
143 unsigned int next_to_use
;
144 /* next descriptor to check for DD status bit */
145 unsigned int next_to_clean
;
146 /* array of buffer information structs */
147 struct ixgb_buffer
*buffer_info
;
150 #define IXGB_DESC_UNUSED(R) \
151 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
152 (R)->next_to_clean - (R)->next_to_use - 1)
154 #define IXGB_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
155 #define IXGB_RX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_rx_desc)
156 #define IXGB_TX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_tx_desc)
157 #define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc)
159 /* board specific private data structure */
161 struct ixgb_adapter
{
162 struct timer_list watchdog_timer
;
163 struct vlan_group
*vlgrp
;
165 uint32_t rx_buffer_len
;
168 uint16_t link_duplex
;
171 struct work_struct tx_timeout_task
;
173 struct timer_list blink_timer
;
174 unsigned long led_status
;
177 struct ixgb_desc_ring tx_ring
;
178 unsigned long timeo_start
;
179 uint32_t tx_cmd_type
;
180 uint64_t hw_csum_tx_good
;
181 uint64_t hw_csum_tx_error
;
182 uint32_t tx_int_delay
;
183 uint32_t tx_timeout_count
;
184 boolean_t tx_int_delay_enable
;
185 boolean_t detect_tx_hung
;
188 struct ixgb_desc_ring rx_ring
;
189 uint64_t hw_csum_rx_error
;
190 uint64_t hw_csum_rx_good
;
191 uint32_t rx_int_delay
;
194 /* OS defined structs */
195 struct net_device
*netdev
;
196 struct pci_dev
*pdev
;
197 struct net_device_stats net_stats
;
199 /* structs defined in ixgb_hw.h */
202 struct ixgb_hw_stats stats
;
203 uint32_t alloc_rx_buff_failed
;
204 #ifdef CONFIG_PCI_MSI
208 #endif /* _IXGB_H_ */