1 /*******************************************************************************
2
3
4 Copyright(c) 1999 - 2004 Intel Corporation. All rights reserved.
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 #ifndef _IXGB_H_
30 #define _IXGB_H_
31
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>
38 #include <linux/mm.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>
55 #include <asm/io.h>
56 #include <asm/irq.h>
57 #include <linux/capability.h>
58 #include <linux/in.h>
59 #include <linux/ip.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>
65 #ifdef NETIF_F_TSO
66 #include <net/checksum.h>
67 #endif
68
69 #include <linux/ethtool.h>
70 #include <linux/if_vlan.h>
71
72 #define BAR_0 0
73 #define BAR_1 1
74 #define BAR_5 5
75
76 struct ixgb_adapter;
77 #include "ixgb_hw.h"
78 #include "ixgb_ee.h"
79 #include "ixgb_ids.h"
80
81 #ifdef _DEBUG_DRIVER_
82 #define IXGB_DBG(args...) printk(KERN_DEBUG "ixgb: " args)
83 #else
84 #define IXGB_DBG(args...)
85 #endif
86
87 #define IXGB_ERR(args...) printk(KERN_ERR "ixgb: " args)
88
89 /* TX/RX descriptor defines */
90 #define DEFAULT_TXD 256
91 #define MAX_TXD 4096
92 #define MIN_TXD 64
93
94 /* hardware cannot reliably support more than 512 descriptors owned by
95 * hardware descrioptor cache otherwise an unreliable ring under heavy
96 * recieve load may result */
97 /* #define DEFAULT_RXD 1024 */
98 /* #define MAX_RXD 4096 */
99 #define DEFAULT_RXD 512
100 #define MAX_RXD 512
101 #define MIN_RXD 64
102
103 /* Supported Rx Buffer Sizes */
104 #define IXGB_RXBUFFER_2048 2048
105 #define IXGB_RXBUFFER_4096 4096
106 #define IXGB_RXBUFFER_8192 8192
107 #define IXGB_RXBUFFER_16384 16384
108
109 /* How many Tx Descriptors do we need to call netif_wake_queue? */
110 #define IXGB_TX_QUEUE_WAKE 16
111
112 /* How many Rx Buffers do we bundle into one write to the hardware ? */
113 #define IXGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */
114
115 /* only works for sizes that are powers of 2 */
116 #define IXGB_ROUNDUP(i, size) ((i) = (((i) + (size) - 1) & ~((size) - 1)))
117
118 /* wrapper around a pointer to a socket buffer,
119 * so a DMA handle can be stored along with the buffer */
120 struct ixgb_buffer {
121 struct sk_buff *skb;
122 uint64_t dma;
123 unsigned long time_stamp;
124 uint16_t length;
125 uint16_t next_to_watch;
126 };
127
128 struct ixgb_desc_ring {
129 /* pointer to the descriptor ring memory */
130 void *desc;
131 /* physical address of the descriptor ring */
132 dma_addr_t dma;
133 /* length of descriptor ring in bytes */
134 unsigned int size;
135 /* number of descriptors in the ring */
136 unsigned int count;
137 /* next descriptor to associate a buffer with */
138 unsigned int next_to_use;
139 /* next descriptor to check for DD status bit */
140 unsigned int next_to_clean;
141 /* array of buffer information structs */
142 struct ixgb_buffer *buffer_info;
143 };
144
145 #define IXGB_DESC_UNUSED(R) \
146 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
147 (R)->next_to_clean - (R)->next_to_use - 1)
148
149 #define IXGB_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
150 #define IXGB_RX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_rx_desc)
151 #define IXGB_TX_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_tx_desc)
152 #define IXGB_CONTEXT_DESC(R, i) IXGB_GET_DESC(R, i, ixgb_context_desc)
153
154 /* board specific private data structure */
155
156 struct ixgb_adapter {
157 struct timer_list watchdog_timer;
158 struct vlan_group *vlgrp;
159 uint32_t bd_number;
160 uint32_t rx_buffer_len;
161 uint32_t part_num;
162 uint16_t link_speed;
163 uint16_t link_duplex;
164 spinlock_t tx_lock;
165 atomic_t irq_sem;
166 struct work_struct tx_timeout_task;
167
168 struct timer_list blink_timer;
169 unsigned long led_status;
170
171 /* TX */
172 struct ixgb_desc_ring tx_ring;
173 unsigned long timeo_start;
174 uint32_t tx_cmd_type;
175 uint64_t hw_csum_tx_good;
176 uint64_t hw_csum_tx_error;
177 uint32_t tx_int_delay;
178 boolean_t tx_int_delay_enable;
179
180 /* RX */
181 struct ixgb_desc_ring rx_ring;
182 uint64_t hw_csum_rx_error;
183 uint64_t hw_csum_rx_good;
184 uint32_t rx_int_delay;
185 boolean_t rx_csum;
186
187 /* OS defined structs */
188 struct net_device *netdev;
189 struct pci_dev *pdev;
190 struct net_device_stats net_stats;
191
192 /* structs defined in ixgb_hw.h */
193 struct ixgb_hw hw;
194 struct ixgb_hw_stats stats;
195 #ifdef CONFIG_PCI_MSI
196 boolean_t have_msi;
197 #endif
198 };
199 #endif /* _IXGB_H_ */
200
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