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".
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
58 #define NON_Q_VECTORS 1
59 #define MAX_Q_VECTORS 8
61 /* Transmit and receive queues */
62 #define IGB_MAX_RX_QUEUES (adapter->vfs_allocated_count ? 2 : \
63 (hw->mac.type > e1000_82575 ? 8 : 4))
64 #define IGB_ABS_MAX_TX_QUEUES 8
65 #define IGB_MAX_TX_QUEUES IGB_MAX_RX_QUEUES
67 #define IGB_MAX_VF_MC_ENTRIES 30
68 #define IGB_MAX_VF_FUNCTIONS 8
69 #define IGB_MAX_VFTA_ENTRIES 128
71 struct vf_data_storage {
72 unsigned char vf_mac_addresses[ETH_ALEN];
73 u16 vf_mc_hashes[IGB_MAX_VF_MC_ENTRIES];
77 unsigned long last_nack;
78 u16 pf_vlan; /* When set, guest VLAN config not allowed. */
82 #define IGB_VF_FLAG_CTS 0x00000001 /* VF is clear to send data */
83 #define IGB_VF_FLAG_UNI_PROMISC 0x00000002 /* VF has unicast promisc */
84 #define IGB_VF_FLAG_MULTI_PROMISC 0x00000004 /* VF has multicast promisc */
85 #define IGB_VF_FLAG_PF_SET_MAC 0x00000008 /* PF has set MAC address */
87 /* RX descriptor control thresholds.
88 * PTHRESH - MAC will consider prefetch if it has fewer than this number of
89 * descriptors available in its onboard memory.
90 * Setting this to 0 disables RX descriptor prefetch.
91 * HTHRESH - MAC will only prefetch if there are at least this many descriptors
92 * available in host memory.
93 * If PTHRESH is 0, this should also be 0.
94 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
95 * descriptors until either it has this many to write back, or the
98 #define IGB_RX_PTHRESH 8
99 #define IGB_RX_HTHRESH 8
100 #define IGB_RX_WTHRESH 1
101 #define IGB_TX_PTHRESH 8
102 #define IGB_TX_HTHRESH 1
103 #define IGB_TX_WTHRESH ((hw->mac.type == e1000_82576 && \
104 adapter->msix_entries) ? 1 : 16)
106 /* this is the size past which hardware will drop packets when setting LPE=0 */
107 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
109 /* Supported Rx Buffer Sizes */
110 #define IGB_RXBUFFER_64 64 /* Used for packet split */
111 #define IGB_RXBUFFER_128 128 /* Used for packet split */
112 #define IGB_RXBUFFER_1024 1024
113 #define IGB_RXBUFFER_2048 2048
114 #define IGB_RXBUFFER_16384 16384
116 #define MAX_STD_JUMBO_FRAME_SIZE 9234
118 /* How many Tx Descriptors do we need to call netif_wake_queue ? */
119 #define IGB_TX_QUEUE_WAKE 16
120 /* How many Rx Buffers do we bundle into one write to the hardware ? */
121 #define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */
123 #define AUTO_ALL_MODES 0
124 #define IGB_EEPROM_APME 0x0400
126 #ifndef IGB_MASTER_SLAVE
127 /* Switch to override PHY master/slave setting */
128 #define IGB_MASTER_SLAVE e1000_ms_hw_default
131 #define IGB_MNG_VLAN_NONE -1
133 /* wrapper around a pointer to a socket buffer,
134 * so a DMA handle can be stored along with the buffer */
141 unsigned long time_stamp;
144 unsigned int bytecount;
146 union skb_shared_tx shtx;
158 struct igb_tx_queue_stats {
164 struct igb_rx_queue_stats {
172 struct igb_q_vector {
173 struct igb_adapter *adapter; /* backlink */
174 struct igb_ring *rx_ring;
175 struct igb_ring *tx_ring;
176 struct napi_struct napi;
183 void __iomem *itr_register;
185 char name[IFNAMSIZ + 9];
189 struct igb_q_vector *q_vector; /* backlink to q_vector */
190 struct net_device *netdev; /* back pointer to net_device */
191 struct device *dev; /* device pointer for dma mapping */
192 dma_addr_t dma; /* phys address of the ring */
193 void *desc; /* descriptor ring memory */
194 unsigned int size; /* length of desc. ring in bytes */
195 u16 count; /* number of desc. in the ring */
202 struct igb_buffer *buffer_info; /* array of buffer info structs */
204 unsigned int total_bytes;
205 unsigned int total_packets;
212 struct igb_tx_queue_stats tx_stats;
217 struct igb_rx_queue_stats rx_stats;
223 #define IGB_RING_FLAG_RX_CSUM 0x00000001 /* RX CSUM enabled */
224 #define IGB_RING_FLAG_RX_SCTP_CSUM 0x00000002 /* SCTP CSUM offload enabled */
226 #define IGB_RING_FLAG_TX_CTX_IDX 0x00000001 /* HW requires context index */
228 #define IGB_ADVTXD_DCMD (E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS)
230 #define E1000_RX_DESC_ADV(R, i) \
231 (&(((union e1000_adv_rx_desc *)((R).desc))[i]))
232 #define E1000_TX_DESC_ADV(R, i) \
233 (&(((union e1000_adv_tx_desc *)((R).desc))[i]))
234 #define E1000_TX_CTXTDESC_ADV(R, i) \
235 (&(((struct e1000_adv_tx_context_desc *)((R).desc))[i]))
237 /* igb_desc_unused - calculate if we have unused descriptors */
238 static inline int igb_desc_unused(struct igb_ring *ring)
240 if (ring->next_to_clean > ring->next_to_use)
241 return ring->next_to_clean - ring->next_to_use - 1;
243 return ring->count + ring->next_to_clean - ring->next_to_use - 1;
246 /* board specific private data structure */
248 struct timer_list watchdog_timer;
249 struct timer_list phy_info_timer;
250 struct vlan_group *vlgrp;
258 /* Interrupt Throttle Rate */
264 struct work_struct reset_task;
265 struct work_struct watchdog_task;
267 u8 tx_timeout_factor;
268 struct timer_list blink_timer;
269 unsigned long led_status;
272 struct igb_ring *tx_ring[16];
273 u32 tx_timeout_count;
276 struct igb_ring *rx_ring[16];
283 /* OS defined structs */
284 struct net_device *netdev;
285 struct pci_dev *pdev;
286 struct cyclecounter cycles;
287 struct timecounter clock;
288 struct timecompare compare;
289 struct hwtstamp_config hwtstamp_config;
291 /* structs defined in e1000_hw.h */
293 struct e1000_hw_stats stats;
294 struct e1000_phy_info phy_info;
295 struct e1000_phy_stats phy_stats;
298 struct igb_ring test_tx_ring;
299 struct igb_ring test_rx_ring;
303 unsigned int num_q_vectors;
304 struct igb_q_vector *q_vector[MAX_Q_VECTORS];
305 struct msix_entry *msix_entries;
306 u32 eims_enable_mask;
309 /* to not mess up cache alignment, always add to the bottom */
314 struct igb_ring *multi_tx_table[IGB_ABS_MAX_TX_QUEUES];
317 unsigned int vfs_allocated_count;
318 struct vf_data_storage *vf_data;
322 #define IGB_FLAG_HAS_MSI (1 << 0)
323 #define IGB_FLAG_DCA_ENABLED (1 << 1)
324 #define IGB_FLAG_QUAD_PORT_A (1 << 2)
325 #define IGB_FLAG_QUEUE_PAIRS (1 << 3)
327 #define IGB_82576_TSYNC_SHIFT 19
328 #define IGB_82580_TSYNC_SHIFT 24
329 #define IGB_TS_HDR_LEN 16
340 extern char igb_driver_name[];
341 extern char igb_driver_version[];
343 extern int igb_up(struct igb_adapter *);
344 extern void igb_down(struct igb_adapter *);
345 extern void igb_reinit_locked(struct igb_adapter *);
346 extern void igb_reset(struct igb_adapter *);
347 extern int igb_set_spd_dplx(struct igb_adapter *, u16);
348 extern int igb_setup_tx_resources(struct igb_ring *);
349 extern int igb_setup_rx_resources(struct igb_ring *);
350 extern void igb_free_tx_resources(struct igb_ring *);
351 extern void igb_free_rx_resources(struct igb_ring *);
352 extern void igb_configure_tx_ring(struct igb_adapter *, struct igb_ring *);
353 extern void igb_configure_rx_ring(struct igb_adapter *, struct igb_ring *);
354 extern void igb_setup_tctl(struct igb_adapter *);
355 extern void igb_setup_rctl(struct igb_adapter *);
356 extern netdev_tx_t igb_xmit_frame_ring_adv(struct sk_buff *, struct igb_ring *);
357 extern void igb_unmap_and_free_tx_resource(struct igb_ring *,
358 struct igb_buffer *);
359 extern void igb_alloc_rx_buffers_adv(struct igb_ring *, int);
360 extern void igb_update_stats(struct igb_adapter *);
361 extern bool igb_has_link(struct igb_adapter *adapter);
362 extern void igb_set_ethtool_ops(struct net_device *);
363 extern void igb_power_up_link(struct igb_adapter *);
365 static inline s32 igb_reset_phy(struct e1000_hw *hw)
367 if (hw->phy.ops.reset)
368 return hw->phy.ops.reset(hw);
373 static inline s32 igb_read_phy_reg(struct e1000_hw *hw, u32 offset, u16 *data)
375 if (hw->phy.ops.read_reg)
376 return hw->phy.ops.read_reg(hw, offset, data);
381 static inline s32 igb_write_phy_reg(struct e1000_hw *hw, u32 offset, u16 data)
383 if (hw->phy.ops.write_reg)
384 return hw->phy.ops.write_reg(hw, offset, data);
389 static inline s32 igb_get_phy_info(struct e1000_hw *hw)
391 if (hw->phy.ops.get_phy_info)
392 return hw->phy.ops.get_phy_info(hw);