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1/*******************************************************************************
2
3 Intel 82599 Virtual Function driver
66c87bd5 4 Copyright(c) 1999 - 2010 Intel Corporation.
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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
13 more details.
14
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.
18
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
21
22 Contact Information:
23 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25
26*******************************************************************************/
27
28#ifndef _IXGBEVF_H_
29#define _IXGBEVF_H_
30
31#include <linux/types.h>
32#include <linux/timer.h>
33#include <linux/io.h>
34#include <linux/netdevice.h>
35
36#include "vf.h"
37
38/* wrapper around a pointer to a socket buffer,
39 * so a DMA handle can be stored along with the buffer */
40struct ixgbevf_tx_buffer {
41 struct sk_buff *skb;
42 dma_addr_t dma;
43 unsigned long time_stamp;
44 u16 length;
45 u16 next_to_watch;
46 u16 mapped_as_page;
47};
48
49struct ixgbevf_rx_buffer {
50 struct sk_buff *skb;
51 dma_addr_t dma;
52 struct page *page;
53 dma_addr_t page_dma;
54 unsigned int page_offset;
55};
56
57struct ixgbevf_ring {
58 struct ixgbevf_adapter *adapter; /* backlink */
59 void *desc; /* descriptor ring memory */
60 dma_addr_t dma; /* phys. address of descriptor ring */
61 unsigned int size; /* length in bytes */
62 unsigned int count; /* amount of descriptors */
63 unsigned int next_to_use;
64 unsigned int next_to_clean;
65
66 int queue_index; /* needed for multiqueue queue management */
67 union {
68 struct ixgbevf_tx_buffer *tx_buffer_info;
69 struct ixgbevf_rx_buffer *rx_buffer_info;
70 };
71
72 u16 head;
73 u16 tail;
74
75 unsigned int total_bytes;
76 unsigned int total_packets;
77
78 u16 reg_idx; /* holds the special value that gets the hardware register
79 * offset associated with this ring, which is different
80 * for DCB and RSS modes */
81
82#if defined(CONFIG_DCA) || defined(CONFIG_DCA_MODULE)
83 /* cpu for tx queue */
84 int cpu;
85#endif
86
87 u64 v_idx; /* maps directly to the index for this ring in the hardware
88 * vector array, can also be used for finding the bit in EICR
89 * and friends that represents the vector for this ring */
90
91 u16 work_limit; /* max work per interrupt */
92 u16 rx_buf_len;
93};
94
95enum ixgbevf_ring_f_enum {
96 RING_F_NONE = 0,
97 RING_F_ARRAY_SIZE /* must be last in enum set */
98};
99
100struct ixgbevf_ring_feature {
101 int indices;
102 int mask;
103};
104
105/* How many Rx Buffers do we bundle into one write to the hardware ? */
106#define IXGBEVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
107
108#define MAX_RX_QUEUES 1
109#define MAX_TX_QUEUES 1
110
111#define IXGBEVF_DEFAULT_TXD 1024
112#define IXGBEVF_DEFAULT_RXD 512
113#define IXGBEVF_MAX_TXD 4096
114#define IXGBEVF_MIN_TXD 64
115#define IXGBEVF_MAX_RXD 4096
116#define IXGBEVF_MIN_RXD 64
117
118/* Supported Rx Buffer Sizes */
119#define IXGBEVF_RXBUFFER_64 64 /* Used for packet split */
120#define IXGBEVF_RXBUFFER_128 128 /* Used for packet split */
121#define IXGBEVF_RXBUFFER_256 256 /* Used for packet split */
122#define IXGBEVF_RXBUFFER_2048 2048
123#define IXGBEVF_MAX_RXBUFFER 16384 /* largest size for single descriptor */
124
125#define IXGBEVF_RX_HDR_SIZE IXGBEVF_RXBUFFER_256
126
127#define MAXIMUM_ETHERNET_VLAN_SIZE (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
128
129#define IXGBE_TX_FLAGS_CSUM (u32)(1)
130#define IXGBE_TX_FLAGS_VLAN (u32)(1 << 1)
131#define IXGBE_TX_FLAGS_TSO (u32)(1 << 2)
132#define IXGBE_TX_FLAGS_IPV4 (u32)(1 << 3)
133#define IXGBE_TX_FLAGS_FCOE (u32)(1 << 4)
134#define IXGBE_TX_FLAGS_FSO (u32)(1 << 5)
135#define IXGBE_TX_FLAGS_VLAN_MASK 0xffff0000
136#define IXGBE_TX_FLAGS_VLAN_PRIO_MASK 0x0000e000
137#define IXGBE_TX_FLAGS_VLAN_SHIFT 16
138
139/* MAX_MSIX_Q_VECTORS of these are allocated,
140 * but we only use one per queue-specific vector.
141 */
142struct ixgbevf_q_vector {
143 struct ixgbevf_adapter *adapter;
144 struct napi_struct napi;
145 DECLARE_BITMAP(rxr_idx, MAX_RX_QUEUES); /* Rx ring indices */
146 DECLARE_BITMAP(txr_idx, MAX_TX_QUEUES); /* Tx ring indices */
147 u8 rxr_count; /* Rx ring count assigned to this vector */
148 u8 txr_count; /* Tx ring count assigned to this vector */
149 u8 tx_itr;
150 u8 rx_itr;
151 u32 eitr;
152 int v_idx; /* vector index in list */
153};
154
155/* Helper macros to switch between ints/sec and what the register uses.
156 * And yes, it's the same math going both ways. The lowest value
157 * supported by all of the ixgbe hardware is 8.
158 */
159#define EITR_INTS_PER_SEC_TO_REG(_eitr) \
160 ((_eitr) ? (1000000000 / ((_eitr) * 256)) : 8)
161#define EITR_REG_TO_INTS_PER_SEC EITR_INTS_PER_SEC_TO_REG
162
163#define IXGBE_DESC_UNUSED(R) \
164 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
165 (R)->next_to_clean - (R)->next_to_use - 1)
166
167#define IXGBE_RX_DESC_ADV(R, i) \
168 (&(((union ixgbe_adv_rx_desc *)((R).desc))[i]))
169#define IXGBE_TX_DESC_ADV(R, i) \
170 (&(((union ixgbe_adv_tx_desc *)((R).desc))[i]))
171#define IXGBE_TX_CTXTDESC_ADV(R, i) \
172 (&(((struct ixgbe_adv_tx_context_desc *)((R).desc))[i]))
173
174#define IXGBE_MAX_JUMBO_FRAME_SIZE 16128
175
176#define OTHER_VECTOR 1
177#define NON_Q_VECTORS (OTHER_VECTOR)
178
179#define MAX_MSIX_Q_VECTORS 2
180#define MAX_MSIX_COUNT 2
181
182#define MIN_MSIX_Q_VECTORS 2
183#define MIN_MSIX_COUNT (MIN_MSIX_Q_VECTORS + NON_Q_VECTORS)
184
185/* board specific private data structure */
186struct ixgbevf_adapter {
187 struct timer_list watchdog_timer;
188#ifdef NETIF_F_HW_VLAN_TX
189 struct vlan_group *vlgrp;
190#endif
191 u16 bd_number;
192 struct work_struct reset_task;
193 struct ixgbevf_q_vector *q_vector[MAX_MSIX_Q_VECTORS];
194 char name[MAX_MSIX_COUNT][IFNAMSIZ + 9];
195
196 /* Interrupt Throttle Rate */
197 u32 itr_setting;
198 u16 eitr_low;
199 u16 eitr_high;
200
201 /* TX */
202 struct ixgbevf_ring *tx_ring; /* One per active queue */
203 int num_tx_queues;
204 u64 restart_queue;
205 u64 hw_csum_tx_good;
206 u64 lsc_int;
207 u64 hw_tso_ctxt;
208 u64 hw_tso6_ctxt;
209 u32 tx_timeout_count;
210 bool detect_tx_hung;
211
212 /* RX */
213 struct ixgbevf_ring *rx_ring; /* One per active queue */
214 int num_rx_queues;
215 int num_rx_pools; /* == num_rx_queues in 82598 */
216 int num_rx_queues_per_pool; /* 1 if 82598, can be many if 82599 */
217 u64 hw_csum_rx_error;
218 u64 hw_rx_no_dma_resources;
219 u64 hw_csum_rx_good;
220 u64 non_eop_descs;
221 int num_msix_vectors;
222 int max_msix_q_vectors; /* true count of q_vectors for device */
223 struct ixgbevf_ring_feature ring_feature[RING_F_ARRAY_SIZE];
224 struct msix_entry *msix_entries;
225
226 u64 rx_hdr_split;
227 u32 alloc_rx_page_failed;
228 u32 alloc_rx_buff_failed;
229
230 /* Some features need tri-state capability,
231 * thus the additional *_CAPABLE flags.
232 */
233 u32 flags;
234#define IXGBE_FLAG_RX_CSUM_ENABLED (u32)(1)
235#define IXGBE_FLAG_RX_1BUF_CAPABLE (u32)(1 << 1)
236#define IXGBE_FLAG_RX_PS_CAPABLE (u32)(1 << 2)
237#define IXGBE_FLAG_RX_PS_ENABLED (u32)(1 << 3)
238#define IXGBE_FLAG_IN_NETPOLL (u32)(1 << 4)
239#define IXGBE_FLAG_IMIR_ENABLED (u32)(1 << 5)
240#define IXGBE_FLAG_MQ_CAPABLE (u32)(1 << 6)
241#define IXGBE_FLAG_NEED_LINK_UPDATE (u32)(1 << 7)
242#define IXGBE_FLAG_IN_WATCHDOG_TASK (u32)(1 << 8)
243 /* OS defined structs */
244 struct net_device *netdev;
245 struct pci_dev *pdev;
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246
247 /* structs defined in ixgbe_vf.h */
248 struct ixgbe_hw hw;
249 u16 msg_enable;
250 struct ixgbevf_hw_stats stats;
251 u64 zero_base;
252 /* Interrupt Throttle Rate */
253 u32 eitr_param;
254
255 unsigned long state;
256 u32 *config_space;
257 u64 tx_busy;
258 unsigned int tx_ring_count;
259 unsigned int rx_ring_count;
260
261 u32 link_speed;
262 bool link_up;
263 unsigned long link_check_timeout;
264
265 struct work_struct watchdog_task;
266 bool netdev_registered;
267 bool dev_closed;
268};
269
270enum ixbgevf_state_t {
271 __IXGBEVF_TESTING,
272 __IXGBEVF_RESETTING,
273 __IXGBEVF_DOWN
274};
275
276enum ixgbevf_boards {
277 board_82599_vf,
278};
279
280extern struct ixgbevf_info ixgbevf_vf_info;
281extern struct ixgbe_mac_operations ixgbevf_mbx_ops;
282
283/* needed by ethtool.c */
284extern char ixgbevf_driver_name[];
285extern const char ixgbevf_driver_version[];
286
287extern int ixgbevf_up(struct ixgbevf_adapter *adapter);
288extern void ixgbevf_down(struct ixgbevf_adapter *adapter);
289extern void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter);
290extern void ixgbevf_reset(struct ixgbevf_adapter *adapter);
291extern void ixgbevf_set_ethtool_ops(struct net_device *netdev);
292extern int ixgbevf_setup_rx_resources(struct ixgbevf_adapter *,
293 struct ixgbevf_ring *);
294extern int ixgbevf_setup_tx_resources(struct ixgbevf_adapter *,
295 struct ixgbevf_ring *);
296extern void ixgbevf_free_rx_resources(struct ixgbevf_adapter *,
297 struct ixgbevf_ring *);
298extern void ixgbevf_free_tx_resources(struct ixgbevf_adapter *,
299 struct ixgbevf_ring *);
300extern void ixgbevf_update_stats(struct ixgbevf_adapter *adapter);
301
302#ifdef ETHTOOL_OPS_COMPAT
303extern int ethtool_ioctl(struct ifreq *ifr);
304
305#endif
306extern void ixgbe_napi_add_all(struct ixgbevf_adapter *adapter);
307extern void ixgbe_napi_del_all(struct ixgbevf_adapter *adapter);
308
309#ifdef DEBUG
310extern char *ixgbevf_get_hw_dev_name(struct ixgbe_hw *hw);
311#define hw_dbg(hw, format, arg...) \
312 printk(KERN_DEBUG "%s: " format, ixgbevf_get_hw_dev_name(hw), ##arg)
313#else
314#define hw_dbg(hw, format, arg...) do {} while (0)
315#endif
316
317#endif /* _IXGBEVF_H_ */