1 /*******************************************************************************
3 Intel PRO/1000 Linux driver
4 Copyright(c) 1999 - 2006 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".
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
30 /* Linux PRO/1000 Ethernet Driver main header file */
35 #include <linux/stddef.h>
36 #include <linux/module.h>
37 #include <linux/types.h>
38 #include <asm/byteorder.h>
40 #include <linux/errno.h>
41 #include <linux/ioport.h>
42 #include <linux/pci.h>
43 #include <linux/kernel.h>
44 #include <linux/netdevice.h>
45 #include <linux/etherdevice.h>
46 #include <linux/skbuff.h>
47 #include <linux/delay.h>
48 #include <linux/timer.h>
49 #include <linux/slab.h>
50 #include <linux/vmalloc.h>
51 #include <linux/interrupt.h>
52 #include <linux/string.h>
53 #include <linux/pagemap.h>
54 #include <linux/dma-mapping.h>
55 #include <linux/bitops.h>
58 #include <linux/capability.h>
61 #include <linux/ipv6.h>
62 #include <linux/tcp.h>
63 #include <linux/udp.h>
64 #include <net/pkt_sched.h>
65 #include <linux/list.h>
66 #include <linux/reboot.h>
67 #include <net/checksum.h>
68 #include <linux/mii.h>
69 #include <linux/ethtool.h>
70 #include <linux/if_vlan.h>
76 #define INTEL_E1000_ETHERNET_DEVICE(device_id) {\
77 PCI_DEVICE(PCI_VENDOR_ID_INTEL, device_id)}
83 #define E1000_MAX_INTR 10
86 * Count for polling __E1000_RESET condition every 10-20msec.
88 #define E1000_CHECK_RESET_COUNT 50
90 /* TX/RX descriptor defines */
91 #define E1000_DEFAULT_TXD 256
92 #define E1000_MAX_TXD 256
93 #define E1000_MIN_TXD 48
94 #define E1000_MAX_82544_TXD 4096
96 #define E1000_DEFAULT_RXD 256
97 #define E1000_MAX_RXD 256
98 #define E1000_MIN_RXD 48
99 #define E1000_MAX_82544_RXD 4096
101 #define E1000_MIN_ITR_USECS 10 /* 100000 irq/sec */
102 #define E1000_MAX_ITR_USECS 10000 /* 100 irq/sec */
104 /* this is the size past which hardware will drop packets when setting LPE=0 */
105 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
107 /* Supported Rx Buffer Sizes */
108 #define E1000_RXBUFFER_128 128 /* Used for packet split */
109 #define E1000_RXBUFFER_256 256 /* Used for packet split */
110 #define E1000_RXBUFFER_512 512
111 #define E1000_RXBUFFER_1024 1024
112 #define E1000_RXBUFFER_2048 2048
113 #define E1000_RXBUFFER_4096 4096
114 #define E1000_RXBUFFER_8192 8192
115 #define E1000_RXBUFFER_16384 16384
117 /* SmartSpeed delimiters */
118 #define E1000_SMARTSPEED_DOWNSHIFT 3
119 #define E1000_SMARTSPEED_MAX 15
121 /* Packet Buffer allocations */
122 #define E1000_PBA_BYTES_SHIFT 0xA
123 #define E1000_TX_HEAD_ADDR_SHIFT 7
124 #define E1000_PBA_TX_MASK 0xFFFF0000
126 /* Flow Control Watermarks */
127 #define E1000_FC_HIGH_DIFF 0x1638 /* High: 5688 bytes below Rx FIFO size */
128 #define E1000_FC_LOW_DIFF 0x1640 /* Low: 5696 bytes below Rx FIFO size */
130 #define E1000_FC_PAUSE_TIME 0xFFFF /* pause for the max or until send xon */
132 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
133 #define E1000_TX_QUEUE_WAKE 16
134 /* How many Rx Buffers do we bundle into one write to the hardware ? */
135 #define E1000_RX_BUFFER_WRITE 16 /* Must be power of 2 */
137 #define AUTO_ALL_MODES 0
138 #define E1000_EEPROM_82544_APM 0x0004
139 #define E1000_EEPROM_APME 0x0400
141 #ifndef E1000_MASTER_SLAVE
142 /* Switch to override PHY master/slave setting */
143 #define E1000_MASTER_SLAVE e1000_ms_hw_default
146 #define E1000_MNG_VLAN_NONE (-1)
148 /* wrapper around a pointer to a socket buffer,
149 * so a DMA handle can be stored along with the buffer
151 struct e1000_tx_buffer {
154 unsigned long time_stamp;
159 unsigned int bytecount;
162 struct e1000_rx_buffer {
164 struct page *page; /* jumbo: alloc_page */
165 u8 *data; /* else, netdev_alloc_frag */
170 struct e1000_tx_ring {
171 /* pointer to the descriptor ring memory */
173 /* physical address of the descriptor ring */
175 /* length of descriptor ring in bytes */
177 /* number of descriptors in the ring */
179 /* next descriptor to associate a buffer with */
180 unsigned int next_to_use;
181 /* next descriptor to check for DD status bit */
182 unsigned int next_to_clean;
183 /* array of buffer information structs */
184 struct e1000_tx_buffer *buffer_info;
191 struct e1000_rx_ring {
192 /* pointer to the descriptor ring memory */
194 /* physical address of the descriptor ring */
196 /* length of descriptor ring in bytes */
198 /* number of descriptors in the ring */
200 /* next descriptor to associate a buffer with */
201 unsigned int next_to_use;
202 /* next descriptor to check for DD status bit */
203 unsigned int next_to_clean;
204 /* array of buffer information structs */
205 struct e1000_rx_buffer *buffer_info;
206 struct sk_buff *rx_skb_top;
208 /* cpu for rx queue */
215 #define E1000_DESC_UNUSED(R) \
217 unsigned int clean = smp_load_acquire(&(R)->next_to_clean); \
218 unsigned int use = READ_ONCE((R)->next_to_use); \
219 (clean > use ? 0 : (R)->count) + clean - use - 1; \
222 #define E1000_RX_DESC_EXT(R, i) \
223 (&(((union e1000_rx_desc_extended *)((R).desc))[i]))
224 #define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
225 #define E1000_RX_DESC(R, i) E1000_GET_DESC(R, i, e1000_rx_desc)
226 #define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc)
227 #define E1000_CONTEXT_DESC(R, i) E1000_GET_DESC(R, i, e1000_context_desc)
229 /* board specific private data structure */
231 struct e1000_adapter {
232 unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
241 spinlock_t stats_lock;
242 unsigned int total_tx_bytes;
243 unsigned int total_tx_packets;
244 unsigned int total_rx_bytes;
245 unsigned int total_rx_packets;
246 /* Interrupt Throttle Rate */
255 struct e1000_tx_ring *tx_ring; /* One per active queue */
256 unsigned int restart_queue;
259 u32 tx_abs_int_delay;
264 u32 tx_timeout_count;
268 u8 tx_timeout_factor;
269 atomic_t tx_fifo_stall;
275 bool (*clean_rx)(struct e1000_adapter *adapter,
276 struct e1000_rx_ring *rx_ring,
277 int *work_done, int work_to_do);
278 void (*alloc_rx_buf)(struct e1000_adapter *adapter,
279 struct e1000_rx_ring *rx_ring,
281 struct e1000_rx_ring *rx_ring; /* One per active queue */
282 struct napi_struct napi;
289 u32 alloc_rx_buff_failed;
291 u32 rx_abs_int_delay;
296 /* OS defined structs */
297 struct net_device *netdev;
298 struct pci_dev *pdev;
300 /* structs defined in e1000_hw.h */
302 struct e1000_hw_stats stats;
303 struct e1000_phy_info phy_info;
304 struct e1000_phy_stats phy_stats;
307 struct e1000_tx_ring test_tx_ring;
308 struct e1000_rx_ring test_rx_ring;
312 /* to not mess up cache alignment, always add to the bottom */
314 bool smart_power_down; /* phy smart power down */
319 /* for ioport free */
325 struct work_struct reset_task;
326 struct delayed_work watchdog_task;
327 struct delayed_work fifo_stall_task;
328 struct delayed_work phy_info_task;
338 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
340 struct net_device *e1000_get_hw_dev(struct e1000_hw *hw);
341 #define e_dbg(format, arg...) \
342 netdev_dbg(e1000_get_hw_dev(hw), format, ## arg)
343 #define e_err(msglvl, format, arg...) \
344 netif_err(adapter, msglvl, adapter->netdev, format, ## arg)
345 #define e_info(msglvl, format, arg...) \
346 netif_info(adapter, msglvl, adapter->netdev, format, ## arg)
347 #define e_warn(msglvl, format, arg...) \
348 netif_warn(adapter, msglvl, adapter->netdev, format, ## arg)
349 #define e_notice(msglvl, format, arg...) \
350 netif_notice(adapter, msglvl, adapter->netdev, format, ## arg)
351 #define e_dev_info(format, arg...) \
352 dev_info(&adapter->pdev->dev, format, ## arg)
353 #define e_dev_warn(format, arg...) \
354 dev_warn(&adapter->pdev->dev, format, ## arg)
355 #define e_dev_err(format, arg...) \
356 dev_err(&adapter->pdev->dev, format, ## arg)
358 extern char e1000_driver_name[];
359 extern const char e1000_driver_version[];
361 int e1000_open(struct net_device *netdev);
362 int e1000_close(struct net_device *netdev);
363 int e1000_up(struct e1000_adapter *adapter);
364 void e1000_down(struct e1000_adapter *adapter);
365 void e1000_reinit_locked(struct e1000_adapter *adapter);
366 void e1000_reset(struct e1000_adapter *adapter);
367 int e1000_set_spd_dplx(struct e1000_adapter *adapter, u32 spd, u8 dplx);
368 int e1000_setup_all_rx_resources(struct e1000_adapter *adapter);
369 int e1000_setup_all_tx_resources(struct e1000_adapter *adapter);
370 void e1000_free_all_rx_resources(struct e1000_adapter *adapter);
371 void e1000_free_all_tx_resources(struct e1000_adapter *adapter);
372 void e1000_update_stats(struct e1000_adapter *adapter);
373 bool e1000_has_link(struct e1000_adapter *adapter);
374 void e1000_power_up_phy(struct e1000_adapter *);
375 void e1000_set_ethtool_ops(struct net_device *netdev);
376 void e1000_check_options(struct e1000_adapter *adapter);
377 char *e1000_get_hw_dev_name(struct e1000_hw *hw);
379 #endif /* _E1000_H_ */