1 /*******************************************************************************
3 Intel(R) Gigabit Ethernet Linux driver
4 Copyright(c) 2007-2009 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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
29 /* Linux PRO/1000 Ethernet Driver main header file */
34 #include "e1000_mac.h"
35 #include "e1000_82575.h"
37 #include <linux/clocksource.h>
38 #include <linux/timecompare.h>
39 #include <linux/net_tstamp.h>
43 /* ((1000000000ns / (6000ints/s * 1024ns)) << 2 = 648 */
44 #define IGB_START_ITR 648
46 /* TX/RX descriptor defines */
47 #define IGB_DEFAULT_TXD 256
48 #define IGB_MIN_TXD 80
49 #define IGB_MAX_TXD 4096
51 #define IGB_DEFAULT_RXD 256
52 #define IGB_MIN_RXD 80
53 #define IGB_MAX_RXD 4096
55 #define IGB_DEFAULT_ITR 3 /* dynamic */
56 #define IGB_MAX_ITR_USECS 10000
57 #define IGB_MIN_ITR_USECS 10
59 /* Transmit and receive queues */
60 #define IGB_MAX_RX_QUEUES (adapter->vfs_allocated_count ? \
61 (adapter->vfs_allocated_count > 6 ? 1 : 2) : 4)
62 #define IGB_MAX_TX_QUEUES IGB_MAX_RX_QUEUES
63 #define IGB_ABS_MAX_TX_QUEUES 4
65 #define IGB_MAX_VF_MC_ENTRIES 30
66 #define IGB_MAX_VF_FUNCTIONS 8
67 #define IGB_MAX_VFTA_ENTRIES 128
69 struct vf_data_storage {
70 unsigned char vf_mac_addresses[ETH_ALEN];
71 u16 vf_mc_hashes[IGB_MAX_VF_MC_ENTRIES];
76 /* RX descriptor control thresholds.
77 * PTHRESH - MAC will consider prefetch if it has fewer than this number of
78 * descriptors available in its onboard memory.
79 * Setting this to 0 disables RX descriptor prefetch.
80 * HTHRESH - MAC will only prefetch if there are at least this many descriptors
81 * available in host memory.
82 * If PTHRESH is 0, this should also be 0.
83 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
84 * descriptors until either it has this many to write back, or the
87 #define IGB_RX_PTHRESH 16
88 #define IGB_RX_HTHRESH 8
89 #define IGB_RX_WTHRESH 1
91 /* this is the size past which hardware will drop packets when setting LPE=0 */
92 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
94 /* Supported Rx Buffer Sizes */
95 #define IGB_RXBUFFER_128 128 /* Used for packet split */
96 #define IGB_RXBUFFER_256 256 /* Used for packet split */
97 #define IGB_RXBUFFER_512 512
98 #define IGB_RXBUFFER_1024 1024
99 #define IGB_RXBUFFER_2048 2048
100 #define IGB_RXBUFFER_16384 16384
102 #define MAX_STD_JUMBO_FRAME_SIZE 9234
104 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
105 #define IGB_TX_QUEUE_WAKE 16
106 /* How many Rx Buffers do we bundle into one write to the hardware ? */
107 #define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */
109 #define AUTO_ALL_MODES 0
110 #define IGB_EEPROM_APME 0x0400
112 #ifndef IGB_MASTER_SLAVE
113 /* Switch to override PHY master/slave setting */
114 #define IGB_MASTER_SLAVE e1000_ms_hw_default
117 #define IGB_MNG_VLAN_NONE -1
119 /* wrapper around a pointer to a socket buffer,
120 * so a DMA handle can be stored along with the buffer */
127 unsigned long time_stamp;
135 unsigned int page_offset;
140 struct igb_tx_queue_stats {
145 struct igb_rx_queue_stats {
152 struct igb_adapter *adapter; /* backlink */
153 void *desc; /* descriptor ring memory */
154 dma_addr_t dma; /* phys address of the ring */
155 unsigned int size; /* length of desc. ring in bytes */
156 unsigned int count; /* number of desc. in the ring */
161 struct igb_buffer *buffer_info; /* array of buffer info structs */
170 unsigned int total_bytes;
171 unsigned int total_packets;
176 struct igb_tx_queue_stats tx_stats;
181 struct igb_rx_queue_stats rx_stats;
183 struct napi_struct napi;
185 struct igb_ring *buddy;
189 char name[IFNAMSIZ + 5];
192 #define E1000_RX_DESC_ADV(R, i) \
193 (&(((union e1000_adv_rx_desc *)((R).desc))[i]))
194 #define E1000_TX_DESC_ADV(R, i) \
195 (&(((union e1000_adv_tx_desc *)((R).desc))[i]))
196 #define E1000_TX_CTXTDESC_ADV(R, i) \
197 (&(((struct e1000_adv_tx_context_desc *)((R).desc))[i]))
199 /* board specific private data structure */
202 struct timer_list watchdog_timer;
203 struct timer_list phy_info_timer;
204 struct vlan_group *vlgrp;
212 unsigned int total_tx_bytes;
213 unsigned int total_tx_packets;
214 unsigned int total_rx_bytes;
215 unsigned int total_rx_packets;
216 /* Interrupt Throttle Rate */
222 struct work_struct reset_task;
223 struct work_struct watchdog_task;
225 u8 tx_timeout_factor;
226 struct timer_list blink_timer;
227 unsigned long led_status;
230 struct igb_ring *tx_ring; /* One per active queue */
231 unsigned int restart_queue;
232 unsigned long tx_queue_len;
238 u32 tx_timeout_count;
241 struct igb_ring *rx_ring; /* One per active queue */
247 u32 alloc_rx_buff_failed;
254 /* OS defined structs */
255 struct net_device *netdev;
256 struct napi_struct napi;
257 struct pci_dev *pdev;
258 struct net_device_stats net_stats;
259 struct cyclecounter cycles;
260 struct timecounter clock;
261 struct timecompare compare;
262 struct hwtstamp_config hwtstamp_config;
264 /* structs defined in e1000_hw.h */
266 struct e1000_hw_stats stats;
267 struct e1000_phy_info phy_info;
268 struct e1000_phy_stats phy_stats;
271 struct igb_ring test_tx_ring;
272 struct igb_ring test_rx_ring;
275 struct msix_entry *msix_entries;
276 u32 eims_enable_mask;
279 /* to not mess up cache alignment, always add to the bottom */
284 struct igb_ring *multi_tx_table[IGB_ABS_MAX_TX_QUEUES];
285 unsigned int tx_ring_count;
286 unsigned int rx_ring_count;
287 unsigned int vfs_allocated_count;
288 struct vf_data_storage *vf_data;
291 #define IGB_FLAG_HAS_MSI (1 << 0)
292 #define IGB_FLAG_DCA_ENABLED (1 << 1)
293 #define IGB_FLAG_QUAD_PORT_A (1 << 2)
294 #define IGB_FLAG_NEED_CTX_IDX (1 << 3)
295 #define IGB_FLAG_RX_CSUM_DISABLED (1 << 4)
307 extern char igb_driver_name[];
308 extern char igb_driver_version[];
310 extern char *igb_get_hw_dev_name(struct e1000_hw *hw);
311 extern int igb_up(struct igb_adapter *);
312 extern void igb_down(struct igb_adapter *);
313 extern void igb_reinit_locked(struct igb_adapter *);
314 extern void igb_reset(struct igb_adapter *);
315 extern int igb_set_spd_dplx(struct igb_adapter *, u16);
316 extern int igb_setup_tx_resources(struct igb_adapter *, struct igb_ring *);
317 extern int igb_setup_rx_resources(struct igb_adapter *, struct igb_ring *);
318 extern void igb_free_tx_resources(struct igb_ring *);
319 extern void igb_free_rx_resources(struct igb_ring *);
320 extern void igb_update_stats(struct igb_adapter *);
321 extern void igb_set_ethtool_ops(struct net_device *);
323 static inline s32 igb_reset_phy(struct e1000_hw *hw)
325 if (hw->phy.ops.reset)
326 return hw->phy.ops.reset(hw);
331 static inline s32 igb_read_phy_reg(struct e1000_hw *hw, u32 offset, u16 *data)
333 if (hw->phy.ops.read_reg)
334 return hw->phy.ops.read_reg(hw, offset, data);
339 static inline s32 igb_write_phy_reg(struct e1000_hw *hw, u32 offset, u16 data)
341 if (hw->phy.ops.write_reg)
342 return hw->phy.ops.write_reg(hw, offset, data);
347 static inline s32 igb_get_phy_info(struct e1000_hw *hw)
349 if (hw->phy.ops.get_phy_info)
350 return hw->phy.ops.get_phy_info(hw);