1 /*******************************************************************************
3 Intel(R) Gigabit Ethernet Linux driver
4 Copyright(c) 2007-2014 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, see <http://www.gnu.org/licenses/>.
18 The full GNU General Public License is included in this distribution in
19 the file called "COPYING".
22 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
25 *******************************************************************************/
28 /* Linux PRO/1000 Ethernet Driver main header file */
33 #include "e1000_mac.h"
34 #include "e1000_82575.h"
36 #include <linux/clocksource.h>
37 #include <linux/net_tstamp.h>
38 #include <linux/ptp_clock_kernel.h>
39 #include <linux/bitops.h>
40 #include <linux/if_vlan.h>
41 #include <linux/i2c.h>
42 #include <linux/i2c-algo-bit.h>
43 #include <linux/pci.h>
44 #include <linux/mdio.h>
48 #define E1000_PCS_CFG_IGN_SD 1
50 /* Interrupt defines */
51 #define IGB_START_ITR 648 /* ~6000 ints/sec */
52 #define IGB_4K_ITR 980
53 #define IGB_20K_ITR 196
54 #define IGB_70K_ITR 56
56 /* TX/RX descriptor defines */
57 #define IGB_DEFAULT_TXD 256
58 #define IGB_DEFAULT_TX_WORK 128
59 #define IGB_MIN_TXD 80
60 #define IGB_MAX_TXD 4096
62 #define IGB_DEFAULT_RXD 256
63 #define IGB_MIN_RXD 80
64 #define IGB_MAX_RXD 4096
66 #define IGB_DEFAULT_ITR 3 /* dynamic */
67 #define IGB_MAX_ITR_USECS 10000
68 #define IGB_MIN_ITR_USECS 10
69 #define NON_Q_VECTORS 1
70 #define MAX_Q_VECTORS 8
71 #define MAX_MSIX_ENTRIES 10
73 /* Transmit and receive queues */
74 #define IGB_MAX_RX_QUEUES 8
75 #define IGB_MAX_RX_QUEUES_82575 4
76 #define IGB_MAX_RX_QUEUES_I211 2
77 #define IGB_MAX_TX_QUEUES 8
78 #define IGB_MAX_VF_MC_ENTRIES 30
79 #define IGB_MAX_VF_FUNCTIONS 8
80 #define IGB_MAX_VFTA_ENTRIES 128
81 #define IGB_82576_VF_DEV_ID 0x10CA
82 #define IGB_I350_VF_DEV_ID 0x1520
84 /* NVM version defines */
85 #define IGB_MAJOR_MASK 0xF000
86 #define IGB_MINOR_MASK 0x0FF0
87 #define IGB_BUILD_MASK 0x000F
88 #define IGB_COMB_VER_MASK 0x00FF
89 #define IGB_MAJOR_SHIFT 12
90 #define IGB_MINOR_SHIFT 4
91 #define IGB_COMB_VER_SHFT 8
92 #define IGB_NVM_VER_INVALID 0xFFFF
93 #define IGB_ETRACK_SHIFT 16
94 #define NVM_ETRACK_WORD 0x0042
95 #define NVM_COMB_VER_OFF 0x0083
96 #define NVM_COMB_VER_PTR 0x003d
98 struct vf_data_storage
{
99 unsigned char vf_mac_addresses
[ETH_ALEN
];
100 u16 vf_mc_hashes
[IGB_MAX_VF_MC_ENTRIES
];
101 u16 num_vf_mc_hashes
;
104 unsigned long last_nack
;
105 u16 pf_vlan
; /* When set, guest VLAN config not allowed. */
108 bool spoofchk_enabled
;
111 #define IGB_VF_FLAG_CTS 0x00000001 /* VF is clear to send data */
112 #define IGB_VF_FLAG_UNI_PROMISC 0x00000002 /* VF has unicast promisc */
113 #define IGB_VF_FLAG_MULTI_PROMISC 0x00000004 /* VF has multicast promisc */
114 #define IGB_VF_FLAG_PF_SET_MAC 0x00000008 /* PF has set MAC address */
116 /* RX descriptor control thresholds.
117 * PTHRESH - MAC will consider prefetch if it has fewer than this number of
118 * descriptors available in its onboard memory.
119 * Setting this to 0 disables RX descriptor prefetch.
120 * HTHRESH - MAC will only prefetch if there are at least this many descriptors
121 * available in host memory.
122 * If PTHRESH is 0, this should also be 0.
123 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
124 * descriptors until either it has this many to write back, or the
127 #define IGB_RX_PTHRESH ((hw->mac.type == e1000_i354) ? 12 : 8)
128 #define IGB_RX_HTHRESH 8
129 #define IGB_TX_PTHRESH ((hw->mac.type == e1000_i354) ? 20 : 8)
130 #define IGB_TX_HTHRESH 1
131 #define IGB_RX_WTHRESH ((hw->mac.type == e1000_82576 && \
132 (adapter->flags & IGB_FLAG_HAS_MSIX)) ? 1 : 4)
133 #define IGB_TX_WTHRESH ((hw->mac.type == e1000_82576 && \
134 (adapter->flags & IGB_FLAG_HAS_MSIX)) ? 1 : 16)
136 /* this is the size past which hardware will drop packets when setting LPE=0 */
137 #define MAXIMUM_ETHERNET_VLAN_SIZE 1522
139 /* Supported Rx Buffer Sizes */
140 #define IGB_RXBUFFER_256 256
141 #define IGB_RXBUFFER_2048 2048
142 #define IGB_RX_HDR_LEN IGB_RXBUFFER_256
143 #define IGB_RX_BUFSZ IGB_RXBUFFER_2048
145 /* How many Rx Buffers do we bundle into one write to the hardware ? */
146 #define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */
148 #define AUTO_ALL_MODES 0
149 #define IGB_EEPROM_APME 0x0400
151 #ifndef IGB_MASTER_SLAVE
152 /* Switch to override PHY master/slave setting */
153 #define IGB_MASTER_SLAVE e1000_ms_hw_default
156 #define IGB_MNG_VLAN_NONE -1
160 IGB_TX_FLAGS_VLAN
= 0x01,
161 IGB_TX_FLAGS_TSO
= 0x02,
162 IGB_TX_FLAGS_TSTAMP
= 0x04,
165 IGB_TX_FLAGS_IPV4
= 0x10,
166 IGB_TX_FLAGS_CSUM
= 0x20,
170 #define IGB_TX_FLAGS_VLAN_MASK 0xffff0000
171 #define IGB_TX_FLAGS_VLAN_SHIFT 16
173 /* The largest size we can write to the descriptor is 65535. In order to
174 * maintain a power of two alignment we have to limit ourselves to 32K.
176 #define IGB_MAX_TXD_PWR 15
177 #define IGB_MAX_DATA_PER_TXD (1 << IGB_MAX_TXD_PWR)
179 /* Tx Descriptors needed, worst case */
180 #define TXD_USE_COUNT(S) DIV_ROUND_UP((S), IGB_MAX_DATA_PER_TXD)
181 #define DESC_NEEDED (MAX_SKB_FRAGS + 4)
183 /* EEPROM byte offsets */
184 #define IGB_SFF_8472_SWAP 0x5C
185 #define IGB_SFF_8472_COMP 0x5E
188 #define IGB_SFF_ADDRESSING_MODE 0x4
189 #define IGB_SFF_8472_UNSUP 0x00
191 /* wrapper around a pointer to a socket buffer,
192 * so a DMA handle can be stored along with the buffer
194 struct igb_tx_buffer
{
195 union e1000_adv_tx_desc
*next_to_watch
;
196 unsigned long time_stamp
;
198 unsigned int bytecount
;
201 DEFINE_DMA_UNMAP_ADDR(dma
);
202 DEFINE_DMA_UNMAP_LEN(len
);
206 struct igb_rx_buffer
{
209 unsigned int page_offset
;
212 struct igb_tx_queue_stats
{
219 struct igb_rx_queue_stats
{
227 struct igb_ring_container
{
228 struct igb_ring
*ring
; /* pointer to linked list of rings */
229 unsigned int total_bytes
; /* total bytes processed this int */
230 unsigned int total_packets
; /* total packets processed this int */
231 u16 work_limit
; /* total work allowed per interrupt */
232 u8 count
; /* total number of rings in vector */
233 u8 itr
; /* current ITR setting for ring */
237 struct igb_q_vector
*q_vector
; /* backlink to q_vector */
238 struct net_device
*netdev
; /* back pointer to net_device */
239 struct device
*dev
; /* device pointer for dma mapping */
240 union { /* array of buffer info structs */
241 struct igb_tx_buffer
*tx_buffer_info
;
242 struct igb_rx_buffer
*rx_buffer_info
;
244 unsigned long last_rx_timestamp
;
245 void *desc
; /* descriptor ring memory */
246 unsigned long flags
; /* ring specific flags */
247 void __iomem
*tail
; /* pointer to ring tail register */
248 dma_addr_t dma
; /* phys address of the ring */
249 unsigned int size
; /* length of desc. ring in bytes */
251 u16 count
; /* number of desc. in the ring */
252 u8 queue_index
; /* logical index of the ring*/
253 u8 reg_idx
; /* physical index of the ring */
255 /* everything past this point are written often */
263 struct igb_tx_queue_stats tx_stats
;
264 struct u64_stats_sync tx_syncp
;
265 struct u64_stats_sync tx_syncp2
;
270 struct igb_rx_queue_stats rx_stats
;
271 struct u64_stats_sync rx_syncp
;
274 } ____cacheline_internodealigned_in_smp
;
276 struct igb_q_vector
{
277 struct igb_adapter
*adapter
; /* backlink */
278 int cpu
; /* CPU for DCA */
279 u32 eims_value
; /* EIMS mask value */
283 void __iomem
*itr_register
;
285 struct igb_ring_container rx
, tx
;
287 struct napi_struct napi
;
288 struct rcu_head rcu
; /* to avoid race with update stats on free */
289 char name
[IFNAMSIZ
+ 9];
291 /* for dynamic allocation of rings associated with this q_vector */
292 struct igb_ring ring
[0] ____cacheline_internodealigned_in_smp
;
295 enum e1000_ring_flags_t
{
296 IGB_RING_FLAG_RX_SCTP_CSUM
,
297 IGB_RING_FLAG_RX_LB_VLAN_BSWAP
,
298 IGB_RING_FLAG_TX_CTX_IDX
,
299 IGB_RING_FLAG_TX_DETECT_HANG
302 #define IGB_TXD_DCMD (E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_RS)
304 #define IGB_RX_DESC(R, i) \
305 (&(((union e1000_adv_rx_desc *)((R)->desc))[i]))
306 #define IGB_TX_DESC(R, i) \
307 (&(((union e1000_adv_tx_desc *)((R)->desc))[i]))
308 #define IGB_TX_CTXTDESC(R, i) \
309 (&(((struct e1000_adv_tx_context_desc *)((R)->desc))[i]))
311 /* igb_test_staterr - tests bits within Rx descriptor status and error fields */
312 static inline __le32
igb_test_staterr(union e1000_adv_rx_desc
*rx_desc
,
313 const u32 stat_err_bits
)
315 return rx_desc
->wb
.upper
.status_error
& cpu_to_le32(stat_err_bits
);
318 /* igb_desc_unused - calculate if we have unused descriptors */
319 static inline int igb_desc_unused(struct igb_ring
*ring
)
321 if (ring
->next_to_clean
> ring
->next_to_use
)
322 return ring
->next_to_clean
- ring
->next_to_use
- 1;
324 return ring
->count
+ ring
->next_to_clean
- ring
->next_to_use
- 1;
327 #ifdef CONFIG_IGB_HWMON
329 #define IGB_HWMON_TYPE_LOC 0
330 #define IGB_HWMON_TYPE_TEMP 1
331 #define IGB_HWMON_TYPE_CAUTION 2
332 #define IGB_HWMON_TYPE_MAX 3
335 struct device_attribute dev_attr
;
337 struct e1000_thermal_diode_data
*sensor
;
342 struct attribute_group group
;
343 const struct attribute_group
*groups
[2];
344 struct attribute
*attrs
[E1000_MAX_SENSORS
* 4 + 1];
345 struct hwmon_attr hwmon_list
[E1000_MAX_SENSORS
* 4];
346 unsigned int n_hwmon
;
350 #define IGB_RETA_SIZE 128
352 /* board specific private data structure */
354 unsigned long active_vlans
[BITS_TO_LONGS(VLAN_N_VID
)];
356 struct net_device
*netdev
;
361 unsigned int num_q_vectors
;
362 struct msix_entry msix_entries
[MAX_MSIX_ENTRIES
];
364 /* Interrupt Throttle Rate */
372 u32 tx_timeout_count
;
374 struct igb_ring
*tx_ring
[16];
378 struct igb_ring
*rx_ring
[16];
383 struct timer_list watchdog_timer
;
384 struct timer_list phy_info_timer
;
393 struct work_struct reset_task
;
394 struct work_struct watchdog_task
;
396 u8 tx_timeout_factor
;
397 struct timer_list blink_timer
;
398 unsigned long led_status
;
400 /* OS defined structs */
401 struct pci_dev
*pdev
;
403 spinlock_t stats64_lock
;
404 struct rtnl_link_stats64 stats64
;
406 /* structs defined in e1000_hw.h */
408 struct e1000_hw_stats stats
;
409 struct e1000_phy_info phy_info
;
410 struct e1000_phy_stats phy_stats
;
413 struct igb_ring test_tx_ring
;
414 struct igb_ring test_rx_ring
;
418 struct igb_q_vector
*q_vector
[MAX_Q_VECTORS
];
419 u32 eims_enable_mask
;
422 /* to not mess up cache alignment, always add to the bottom */
425 unsigned int vfs_allocated_count
;
426 struct vf_data_storage
*vf_data
;
427 int vf_rate_link_speed
;
432 struct ptp_clock
*ptp_clock
;
433 struct ptp_clock_info ptp_caps
;
434 struct delayed_work ptp_overflow_work
;
435 struct work_struct ptp_tx_work
;
436 struct sk_buff
*ptp_tx_skb
;
437 struct hwtstamp_config tstamp_config
;
438 unsigned long ptp_tx_start
;
439 unsigned long last_rx_ptp_check
;
440 spinlock_t tmreg_lock
;
441 struct cyclecounter cc
;
442 struct timecounter tc
;
443 u32 tx_hwtstamp_timeouts
;
444 u32 rx_hwtstamp_cleared
;
447 #ifdef CONFIG_IGB_HWMON
448 struct hwmon_buff
*igb_hwmon_buff
;
451 struct i2c_algo_bit_data i2c_algo
;
452 struct i2c_adapter i2c_adap
;
453 struct i2c_client
*i2c_client
;
454 u32 rss_indir_tbl_init
;
455 u8 rss_indir_tbl
[IGB_RETA_SIZE
];
457 unsigned long link_check_timeout
;
459 struct e1000_info ei
;
463 #define IGB_FLAG_HAS_MSI (1 << 0)
464 #define IGB_FLAG_DCA_ENABLED (1 << 1)
465 #define IGB_FLAG_QUAD_PORT_A (1 << 2)
466 #define IGB_FLAG_QUEUE_PAIRS (1 << 3)
467 #define IGB_FLAG_DMAC (1 << 4)
468 #define IGB_FLAG_PTP (1 << 5)
469 #define IGB_FLAG_RSS_FIELD_IPV4_UDP (1 << 6)
470 #define IGB_FLAG_RSS_FIELD_IPV6_UDP (1 << 7)
471 #define IGB_FLAG_WOL_SUPPORTED (1 << 8)
472 #define IGB_FLAG_NEED_LINK_UPDATE (1 << 9)
473 #define IGB_FLAG_MEDIA_RESET (1 << 10)
474 #define IGB_FLAG_MAS_CAPABLE (1 << 11)
475 #define IGB_FLAG_MAS_ENABLE (1 << 12)
476 #define IGB_FLAG_HAS_MSIX (1 << 13)
477 #define IGB_FLAG_EEE (1 << 14)
479 /* Media Auto Sense */
480 #define IGB_MAS_ENABLE_0 0X0001
481 #define IGB_MAS_ENABLE_1 0X0002
482 #define IGB_MAS_ENABLE_2 0X0004
483 #define IGB_MAS_ENABLE_3 0X0008
485 /* DMA Coalescing defines */
486 #define IGB_MIN_TXPBSIZE 20408
487 #define IGB_TX_BUF_4096 4096
488 #define IGB_DMCTLX_DCFLUSH_DIS 0x80000000 /* Disable DMA Coal Flush */
490 #define IGB_82576_TSYNC_SHIFT 19
491 #define IGB_TS_HDR_LEN 16
502 extern char igb_driver_name
[];
503 extern char igb_driver_version
[];
505 int igb_up(struct igb_adapter
*);
506 void igb_down(struct igb_adapter
*);
507 void igb_reinit_locked(struct igb_adapter
*);
508 void igb_reset(struct igb_adapter
*);
509 int igb_reinit_queues(struct igb_adapter
*);
510 void igb_write_rss_indir_tbl(struct igb_adapter
*);
511 int igb_set_spd_dplx(struct igb_adapter
*, u32
, u8
);
512 int igb_setup_tx_resources(struct igb_ring
*);
513 int igb_setup_rx_resources(struct igb_ring
*);
514 void igb_free_tx_resources(struct igb_ring
*);
515 void igb_free_rx_resources(struct igb_ring
*);
516 void igb_configure_tx_ring(struct igb_adapter
*, struct igb_ring
*);
517 void igb_configure_rx_ring(struct igb_adapter
*, struct igb_ring
*);
518 void igb_setup_tctl(struct igb_adapter
*);
519 void igb_setup_rctl(struct igb_adapter
*);
520 netdev_tx_t
igb_xmit_frame_ring(struct sk_buff
*, struct igb_ring
*);
521 void igb_unmap_and_free_tx_resource(struct igb_ring
*, struct igb_tx_buffer
*);
522 void igb_alloc_rx_buffers(struct igb_ring
*, u16
);
523 void igb_update_stats(struct igb_adapter
*, struct rtnl_link_stats64
*);
524 bool igb_has_link(struct igb_adapter
*adapter
);
525 void igb_set_ethtool_ops(struct net_device
*);
526 void igb_power_up_link(struct igb_adapter
*);
527 void igb_set_fw_version(struct igb_adapter
*);
528 void igb_ptp_init(struct igb_adapter
*adapter
);
529 void igb_ptp_stop(struct igb_adapter
*adapter
);
530 void igb_ptp_reset(struct igb_adapter
*adapter
);
531 void igb_ptp_rx_hang(struct igb_adapter
*adapter
);
532 void igb_ptp_rx_rgtstamp(struct igb_q_vector
*q_vector
, struct sk_buff
*skb
);
533 void igb_ptp_rx_pktstamp(struct igb_q_vector
*q_vector
, unsigned char *va
,
534 struct sk_buff
*skb
);
535 static inline void igb_ptp_rx_hwtstamp(struct igb_ring
*rx_ring
,
536 union e1000_adv_rx_desc
*rx_desc
,
539 if (igb_test_staterr(rx_desc
, E1000_RXDADV_STAT_TS
) &&
540 !igb_test_staterr(rx_desc
, E1000_RXDADV_STAT_TSIP
))
541 igb_ptp_rx_rgtstamp(rx_ring
->q_vector
, skb
);
543 /* Update the last_rx_timestamp timer in order to enable watchdog check
544 * for error case of latched timestamp on a dropped packet.
546 rx_ring
->last_rx_timestamp
= jiffies
;
549 int igb_ptp_set_ts_config(struct net_device
*netdev
, struct ifreq
*ifr
);
550 int igb_ptp_get_ts_config(struct net_device
*netdev
, struct ifreq
*ifr
);
551 #ifdef CONFIG_IGB_HWMON
552 void igb_sysfs_exit(struct igb_adapter
*adapter
);
553 int igb_sysfs_init(struct igb_adapter
*adapter
);
555 static inline s32
igb_reset_phy(struct e1000_hw
*hw
)
557 if (hw
->phy
.ops
.reset
)
558 return hw
->phy
.ops
.reset(hw
);
563 static inline s32
igb_read_phy_reg(struct e1000_hw
*hw
, u32 offset
, u16
*data
)
565 if (hw
->phy
.ops
.read_reg
)
566 return hw
->phy
.ops
.read_reg(hw
, offset
, data
);
571 static inline s32
igb_write_phy_reg(struct e1000_hw
*hw
, u32 offset
, u16 data
)
573 if (hw
->phy
.ops
.write_reg
)
574 return hw
->phy
.ops
.write_reg(hw
, offset
, data
);
579 static inline s32
igb_get_phy_info(struct e1000_hw
*hw
)
581 if (hw
->phy
.ops
.get_phy_info
)
582 return hw
->phy
.ops
.get_phy_info(hw
);
587 static inline struct netdev_queue
*txring_txq(const struct igb_ring
*tx_ring
)
589 return netdev_get_tx_queue(tx_ring
->netdev
, tx_ring
->queue_index
);