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 4
61 #define IGB_MAX_TX_QUEUES 4
63 /* RX descriptor control thresholds.
64 * PTHRESH - MAC will consider prefetch if it has fewer than this number of
65 * descriptors available in its onboard memory.
66 * Setting this to 0 disables RX descriptor prefetch.
67 * HTHRESH - MAC will only prefetch if there are at least this many descriptors
68 * available in host memory.
69 * If PTHRESH is 0, this should also be 0.
70 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
71 * descriptors until either it has this many to write back, or the
74 #define IGB_RX_PTHRESH 16
75 #define IGB_RX_HTHRESH 8
76 #define IGB_RX_WTHRESH 1
78 /* this is the size past which hardware will drop packets when setting LPE=0 */
79 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
81 /* Supported Rx Buffer Sizes */
82 #define IGB_RXBUFFER_128 128 /* Used for packet split */
83 #define IGB_RXBUFFER_256 256 /* Used for packet split */
84 #define IGB_RXBUFFER_512 512
85 #define IGB_RXBUFFER_1024 1024
86 #define IGB_RXBUFFER_2048 2048
87 #define IGB_RXBUFFER_16384 16384
89 /* Packet Buffer allocations */
92 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
93 #define IGB_TX_QUEUE_WAKE 16
94 /* How many Rx Buffers do we bundle into one write to the hardware ? */
95 #define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */
97 #define AUTO_ALL_MODES 0
98 #define IGB_EEPROM_APME 0x0400
100 #ifndef IGB_MASTER_SLAVE
101 /* Switch to override PHY master/slave setting */
102 #define IGB_MASTER_SLAVE e1000_ms_hw_default
105 #define IGB_MNG_VLAN_NONE -1
107 /* wrapper around a pointer to a socket buffer,
108 * so a DMA handle can be stored along with the buffer */
115 unsigned long time_stamp;
123 unsigned int page_offset;
128 struct igb_queue_stats {
134 struct igb_adapter *adapter; /* backlink */
135 void *desc; /* descriptor ring memory */
136 dma_addr_t dma; /* phys address of the ring */
137 unsigned int size; /* length of desc. ring in bytes */
138 unsigned int count; /* number of desc. in the ring */
143 struct igb_buffer *buffer_info; /* array of buffer info structs */
152 unsigned int total_bytes;
153 unsigned int total_packets;
158 struct igb_queue_stats tx_stats;
163 struct igb_queue_stats rx_stats;
164 struct napi_struct napi;
166 struct igb_ring *buddy;
170 char name[IFNAMSIZ + 5];
173 #define IGB_DESC_UNUSED(R) \
174 ((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
175 (R)->next_to_clean - (R)->next_to_use - 1)
177 #define E1000_RX_DESC_ADV(R, i) \
178 (&(((union e1000_adv_rx_desc *)((R).desc))[i]))
179 #define E1000_TX_DESC_ADV(R, i) \
180 (&(((union e1000_adv_tx_desc *)((R).desc))[i]))
181 #define E1000_TX_CTXTDESC_ADV(R, i) \
182 (&(((struct e1000_adv_tx_context_desc *)((R).desc))[i]))
184 /* board specific private data structure */
187 struct timer_list watchdog_timer;
188 struct timer_list phy_info_timer;
189 struct vlan_group *vlgrp;
197 unsigned int total_tx_bytes;
198 unsigned int total_tx_packets;
199 unsigned int total_rx_bytes;
200 unsigned int total_rx_packets;
201 /* Interrupt Throttle Rate */
207 struct work_struct reset_task;
208 struct work_struct watchdog_task;
210 u8 tx_timeout_factor;
211 struct timer_list blink_timer;
212 unsigned long led_status;
215 struct igb_ring *tx_ring; /* One per active queue */
216 unsigned int restart_queue;
217 unsigned long tx_queue_len;
223 u32 tx_timeout_count;
226 struct igb_ring *rx_ring; /* One per active queue */
232 u32 alloc_rx_buff_failed;
240 /* OS defined structs */
241 struct net_device *netdev;
242 struct napi_struct napi;
243 struct pci_dev *pdev;
244 struct net_device_stats net_stats;
245 struct cyclecounter cycles;
246 struct timecounter clock;
247 struct timecompare compare;
248 struct hwtstamp_config hwtstamp_config;
250 /* structs defined in e1000_hw.h */
252 struct e1000_hw_stats stats;
253 struct e1000_phy_info phy_info;
254 struct e1000_phy_stats phy_stats;
257 struct igb_ring test_tx_ring;
258 struct igb_ring test_rx_ring;
261 struct msix_entry *msix_entries;
262 u32 eims_enable_mask;
265 /* to not mess up cache alignment, always add to the bottom */
270 struct igb_ring *multi_tx_table[IGB_MAX_TX_QUEUES];
271 unsigned int tx_ring_count;
272 unsigned int rx_ring_count;
275 #define IGB_FLAG_HAS_MSI (1 << 0)
276 #define IGB_FLAG_DCA_ENABLED (1 << 1)
277 #define IGB_FLAG_QUAD_PORT_A (1 << 2)
278 #define IGB_FLAG_NEED_CTX_IDX (1 << 3)
290 extern char igb_driver_name[];
291 extern char igb_driver_version[];
293 extern char *igb_get_hw_dev_name(struct e1000_hw *hw);
294 extern int igb_up(struct igb_adapter *);
295 extern void igb_down(struct igb_adapter *);
296 extern void igb_reinit_locked(struct igb_adapter *);
297 extern void igb_reset(struct igb_adapter *);
298 extern int igb_set_spd_dplx(struct igb_adapter *, u16);
299 extern int igb_setup_tx_resources(struct igb_adapter *, struct igb_ring *);
300 extern int igb_setup_rx_resources(struct igb_adapter *, struct igb_ring *);
301 extern void igb_free_tx_resources(struct igb_ring *);
302 extern void igb_free_rx_resources(struct igb_ring *);
303 extern void igb_update_stats(struct igb_adapter *);
304 extern void igb_set_ethtool_ops(struct net_device *);
306 static inline s32 igb_reset_phy(struct e1000_hw *hw)
308 if (hw->phy.ops.reset)
309 return hw->phy.ops.reset(hw);
314 static inline s32 igb_read_phy_reg(struct e1000_hw *hw, u32 offset, u16 *data)
316 if (hw->phy.ops.read_reg)
317 return hw->phy.ops.read_reg(hw, offset, data);
322 static inline s32 igb_write_phy_reg(struct e1000_hw *hw, u32 offset, u16 data)
324 if (hw->phy.ops.write_reg)
325 return hw->phy.ops.write_reg(hw, offset, data);
330 static inline s32 igb_get_phy_info(struct e1000_hw *hw)
332 if (hw->phy.ops.get_phy_info)
333 return hw->phy.ops.get_phy_info(hw);