[net-next-2.6.git] / drivers / net / igb / igb.h

/*******************************************************************************

  Intel(R) Gigabit Ethernet Linux driver
  Copyright(c) 2007-2009 Intel Corporation.

  This program is free software; you can redistribute it and/or modify it
  under the terms and conditions of the GNU General Public License,
  version 2, as published by the Free Software Foundation.

  This program is distributed in the hope it will be useful, but WITHOUT
  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  more details.

  You should have received a copy of the GNU General Public License along with
  this program; if not, write to the Free Software Foundation, Inc.,
  51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.

  The full GNU General Public License is included in this distribution in
  the file called "COPYING".

  Contact Information:
  e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

*******************************************************************************/


/* Linux PRO/1000 Ethernet Driver main header file */

#ifndef _IGB_H_
#define _IGB_H_

#include "e1000_mac.h"
#include "e1000_82575.h"

#include <linux/clocksource.h>
#include <linux/timecompare.h>
#include <linux/net_tstamp.h>

struct igb_adapter;

/* ((1000000000ns / (6000ints/s * 1024ns)) << 2 = 648 */
#define IGB_START_ITR 648

/* TX/RX descriptor defines */
#define IGB_DEFAULT_TXD                  256
#define IGB_MIN_TXD                       80
#define IGB_MAX_TXD                     4096

#define IGB_DEFAULT_RXD                  256
#define IGB_MIN_RXD                       80
#define IGB_MAX_RXD                     4096

#define IGB_DEFAULT_ITR                    3 /* dynamic */
#define IGB_MAX_ITR_USECS              10000
#define IGB_MIN_ITR_USECS                 10
#define NON_Q_VECTORS                      1
#define MAX_Q_VECTORS                      8

/* Transmit and receive queues */
#define IGB_MAX_RX_QUEUES                  (adapter->vfs_allocated_count ? 2 : \
                                           (hw->mac.type > e1000_82575 ? 8 : 4))
#define IGB_ABS_MAX_TX_QUEUES              8
#define IGB_MAX_TX_QUEUES                  IGB_MAX_RX_QUEUES

#define IGB_MAX_VF_MC_ENTRIES              30
#define IGB_MAX_VF_FUNCTIONS               8
#define IGB_MAX_VFTA_ENTRIES               128

struct vf_data_storage {
	unsigned char vf_mac_addresses[ETH_ALEN];
	u16 vf_mc_hashes[IGB_MAX_VF_MC_ENTRIES];
	u16 num_vf_mc_hashes;
	u16 vlans_enabled;
	u32 flags;
	unsigned long last_nack;
};

#define IGB_VF_FLAG_CTS            0x00000001 /* VF is clear to send data */
#define IGB_VF_FLAG_UNI_PROMISC    0x00000002 /* VF has unicast promisc */
#define IGB_VF_FLAG_MULTI_PROMISC  0x00000004 /* VF has multicast promisc */

/* RX descriptor control thresholds.
 * PTHRESH - MAC will consider prefetch if it has fewer than this number of
 *           descriptors available in its onboard memory.
 *           Setting this to 0 disables RX descriptor prefetch.
 * HTHRESH - MAC will only prefetch if there are at least this many descriptors
 *           available in host memory.
 *           If PTHRESH is 0, this should also be 0.
 * WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
 *           descriptors until either it has this many to write back, or the
 *           ITR timer expires.
 */
#define IGB_RX_PTHRESH                    (hw->mac.type <= e1000_82576 ? 16 : 8)
#define IGB_RX_HTHRESH                     8
#define IGB_RX_WTHRESH                     1
#define IGB_TX_PTHRESH                     8
#define IGB_TX_HTHRESH                     1
#define IGB_TX_WTHRESH                     ((hw->mac.type == e1000_82576 && \
                                             adapter->msix_entries) ? 0 : 16)

/* this is the size past which hardware will drop packets when setting LPE=0 */
#define MAXIMUM_ETHERNET_VLAN_SIZE 1522

/* Supported Rx Buffer Sizes */
#define IGB_RXBUFFER_128   128    /* Used for packet split */
#define IGB_RXBUFFER_1024  1024
#define IGB_RXBUFFER_2048  2048
#define IGB_RXBUFFER_16384 16384

#define MAX_STD_JUMBO_FRAME_SIZE 9234

/* How many Tx Descriptors do we need to call netif_wake_queue ? */
#define IGB_TX_QUEUE_WAKE	16
/* How many Rx Buffers do we bundle into one write to the hardware ? */
#define IGB_RX_BUFFER_WRITE	16	/* Must be power of 2 */

#define AUTO_ALL_MODES            0
#define IGB_EEPROM_APME         0x0400

#ifndef IGB_MASTER_SLAVE
/* Switch to override PHY master/slave setting */
#define IGB_MASTER_SLAVE	e1000_ms_hw_default
#endif

#define IGB_MNG_VLAN_NONE -1

/* wrapper around a pointer to a socket buffer,
 * so a DMA handle can be stored along with the buffer */
struct igb_buffer {
	struct sk_buff *skb;
	dma_addr_t dma;
	union {
		/* TX */
		struct {
			unsigned long time_stamp;
			u16 length;
			u16 next_to_watch;
			u16 mapped_as_page;
		};
		/* RX */
		struct {
			struct page *page;
			dma_addr_t page_dma;
			u16 page_offset;
		};
	};
};

struct igb_tx_queue_stats {
	u64 packets;
	u64 bytes;
	u64 restart_queue;
};

struct igb_rx_queue_stats {
	u64 packets;
	u64 bytes;
	u64 drops;
	u64 csum_err;
	u64 alloc_failed;
};

struct igb_q_vector {
	struct igb_adapter *adapter; /* backlink */
	struct igb_ring *rx_ring;
	struct igb_ring *tx_ring;
	struct napi_struct napi;

	u32 eims_value;
	u16 cpu;

	u16 itr_val;
	u8 set_itr;
	u8 itr_shift;
	void __iomem *itr_register;

	char name[IFNAMSIZ + 9];
};

struct igb_ring {
	struct igb_q_vector *q_vector; /* backlink to q_vector */
	struct net_device *netdev;     /* back pointer to net_device */
	struct pci_dev *pdev;          /* pci device for dma mapping */
	dma_addr_t dma;                /* phys address of the ring */
	void *desc;                    /* descriptor ring memory */
	unsigned int size;             /* length of desc. ring in bytes */
	u16 count;                     /* number of desc. in the ring */
	u16 next_to_use;
	u16 next_to_clean;
	u8 queue_index;
	u8 reg_idx;
	void __iomem *head;
	void __iomem *tail;
	struct igb_buffer *buffer_info; /* array of buffer info structs */

	unsigned int total_bytes;
	unsigned int total_packets;

	u32 flags;

	union {
		/* TX */
		struct {
			struct igb_tx_queue_stats tx_stats;
			bool detect_tx_hung;
		};
		/* RX */
		struct {
			struct igb_rx_queue_stats rx_stats;
			u32 rx_buffer_len;
		};
	};
};

#define IGB_RING_FLAG_RX_CSUM        0x00000001 /* RX CSUM enabled */
#define IGB_RING_FLAG_RX_SCTP_CSUM   0x00000002 /* SCTP CSUM offload enabled */

#define IGB_RING_FLAG_TX_CTX_IDX     0x00000001 /* HW requires context index */

#define IGB_ADVTXD_DCMD (E1000_TXD_CMD_EOP | E1000_TXD_CMD_RS)

#define E1000_RX_DESC_ADV(R, i)	    \
	(&(((union e1000_adv_rx_desc *)((R).desc))[i]))
#define E1000_TX_DESC_ADV(R, i)	    \
	(&(((union e1000_adv_tx_desc *)((R).desc))[i]))
#define E1000_TX_CTXTDESC_ADV(R, i)	    \
	(&(((struct e1000_adv_tx_context_desc *)((R).desc))[i]))

/* igb_desc_unused - calculate if we have unused descriptors */
static inline int igb_desc_unused(struct igb_ring *ring)
{
	if (ring->next_to_clean > ring->next_to_use)
		return ring->next_to_clean - ring->next_to_use - 1;

	return ring->count + ring->next_to_clean - ring->next_to_use - 1;
}

/* board specific private data structure */

struct igb_adapter {
	struct timer_list watchdog_timer;
	struct timer_list phy_info_timer;
	struct vlan_group *vlgrp;
	u16 mng_vlan_id;
	u32 bd_number;
	u32 wol;
	u32 en_mng_pt;
	u16 link_speed;
	u16 link_duplex;

	/* Interrupt Throttle Rate */
	u32 rx_itr_setting;
	u32 tx_itr_setting;
	u16 tx_itr;
	u16 rx_itr;

	struct work_struct reset_task;
	struct work_struct watchdog_task;
	bool fc_autoneg;
	u8  tx_timeout_factor;
	struct timer_list blink_timer;
	unsigned long led_status;

	/* TX */
	struct igb_ring *tx_ring;      /* One per active queue */
	unsigned long tx_queue_len;
	u32 tx_timeout_count;

	/* RX */
	struct igb_ring *rx_ring;      /* One per active queue */
	int num_tx_queues;
	int num_rx_queues;

	u32 max_frame_size;
	u32 min_frame_size;

	/* OS defined structs */
	struct net_device *netdev;
	struct pci_dev *pdev;
	struct cyclecounter cycles;
	struct timecounter clock;
	struct timecompare compare;
	struct hwtstamp_config hwtstamp_config;

	/* structs defined in e1000_hw.h */
	struct e1000_hw hw;
	struct e1000_hw_stats stats;
	struct e1000_phy_info phy_info;
	struct e1000_phy_stats phy_stats;

	u32 test_icr;
	struct igb_ring test_tx_ring;
	struct igb_ring test_rx_ring;

	int msg_enable;

	unsigned int num_q_vectors;
	struct igb_q_vector *q_vector[MAX_Q_VECTORS];
	struct msix_entry *msix_entries;
	u32 eims_enable_mask;
	u32 eims_other;

	/* to not mess up cache alignment, always add to the bottom */
	unsigned long state;
	unsigned int flags;
	u32 eeprom_wol;

	struct igb_ring *multi_tx_table[IGB_ABS_MAX_TX_QUEUES];
	u16 tx_ring_count;
	u16 rx_ring_count;
	unsigned int vfs_allocated_count;
	struct vf_data_storage *vf_data;
	u32 rss_queues;
};

#define IGB_FLAG_HAS_MSI           (1 << 0)
#define IGB_FLAG_DCA_ENABLED       (1 << 1)
#define IGB_FLAG_QUAD_PORT_A       (1 << 2)
#define IGB_FLAG_QUEUE_PAIRS       (1 << 3)

#define IGB_82576_TSYNC_SHIFT 19
#define IGB_82580_TSYNC_SHIFT 24
enum e1000_state_t {
	__IGB_TESTING,
	__IGB_RESETTING,
	__IGB_DOWN
};

enum igb_boards {
	board_82575,
};

extern char igb_driver_name[];
extern char igb_driver_version[];

extern char *igb_get_hw_dev_name(struct e1000_hw *hw);
extern int igb_up(struct igb_adapter *);
extern void igb_down(struct igb_adapter *);
extern void igb_reinit_locked(struct igb_adapter *);
extern void igb_reset(struct igb_adapter *);
extern int igb_set_spd_dplx(struct igb_adapter *, u16);
extern int igb_setup_tx_resources(struct igb_ring *);
extern int igb_setup_rx_resources(struct igb_ring *);
extern void igb_free_tx_resources(struct igb_ring *);
extern void igb_free_rx_resources(struct igb_ring *);
extern void igb_configure_tx_ring(struct igb_adapter *, struct igb_ring *);
extern void igb_configure_rx_ring(struct igb_adapter *, struct igb_ring *);
extern void igb_setup_tctl(struct igb_adapter *);
extern void igb_setup_rctl(struct igb_adapter *);
extern netdev_tx_t igb_xmit_frame_ring_adv(struct sk_buff *, struct igb_ring *);
extern void igb_unmap_and_free_tx_resource(struct igb_ring *,
					   struct igb_buffer *);
extern void igb_alloc_rx_buffers_adv(struct igb_ring *, int);
extern void igb_update_stats(struct igb_adapter *);
extern void igb_set_ethtool_ops(struct net_device *);

static inline s32 igb_reset_phy(struct e1000_hw *hw)
{
	if (hw->phy.ops.reset)
		return hw->phy.ops.reset(hw);

	return 0;
}

static inline s32 igb_read_phy_reg(struct e1000_hw *hw, u32 offset, u16 *data)
{
	if (hw->phy.ops.read_reg)
		return hw->phy.ops.read_reg(hw, offset, data);

	return 0;
}

static inline s32 igb_write_phy_reg(struct e1000_hw *hw, u32 offset, u16 data)
{
	if (hw->phy.ops.write_reg)
		return hw->phy.ops.write_reg(hw, offset, data);

	return 0;
}

static inline s32 igb_get_phy_info(struct e1000_hw *hw)
{
	if (hw->phy.ops.get_phy_info)
		return hw->phy.ops.get_phy_info(hw);

	return 0;
}

#endif /* _IGB_H_ */
Commit	Line	Data
9d5c8243 AK	1	/*******************************************************************************
	2
	3	Intel(R) Gigabit Ethernet Linux driver
86d5d38f	4	Copyright(c) 2007-2009 Intel Corporation.
9d5c8243 AK	5
	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.
	9
	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
	13	more details.
	14
	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.
	18
	19	The full GNU General Public License is included in this distribution in
	20	the file called "COPYING".
	21
	22	Contact Information:
	23	e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
	24	Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	25
	26	*******************************************************************************/
	27
	28
	29	/* Linux PRO/1000 Ethernet Driver main header file */
	30
	31	#ifndef _IGB_H_
	32	#define _IGB_H_
	33
	34	#include "e1000_mac.h"
	35	#include "e1000_82575.h"
	36
38c845c7	37	#include <linux/clocksource.h>
33af6bcc PO	38	#include <linux/timecompare.h>
33af6bcc PO	39	#include <linux/net_tstamp.h>
38c845c7	40
9d5c8243 AK	41	struct igb_adapter;
9d5c8243 AK	42
6eb5a7f1 AD	43	/* ((1000000000ns / (6000ints/s * 1024ns)) << 2 = 648 */
6eb5a7f1 AD	44	#define IGB_START_ITR 648
9d5c8243	45
9d5c8243 AK	46	/* TX/RX descriptor defines */
	47	#define IGB_DEFAULT_TXD 256
	48	#define IGB_MIN_TXD 80
	49	#define IGB_MAX_TXD 4096
	50
	51	#define IGB_DEFAULT_RXD 256
	52	#define IGB_MIN_RXD 80
	53	#define IGB_MAX_RXD 4096
	54
	55	#define IGB_DEFAULT_ITR 3 /* dynamic */
	56	#define IGB_MAX_ITR_USECS 10000
	57	#define IGB_MIN_ITR_USECS 10
047e0030 AD	58	#define NON_Q_VECTORS 1
047e0030 AD	59	#define MAX_Q_VECTORS 8
9d5c8243 AK	60
9d5c8243 AK	61	/* Transmit and receive queues */
a99955fc AD	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
9d5c8243	66
4ae196df AD	67	#define IGB_MAX_VF_MC_ENTRIES 30
	68	#define IGB_MAX_VF_FUNCTIONS 8
	69	#define IGB_MAX_VFTA_ENTRIES 128
	70
	71	struct vf_data_storage {
	72	unsigned char vf_mac_addresses[ETH_ALEN];
	73	u16 vf_mc_hashes[IGB_MAX_VF_MC_ENTRIES];
	74	u16 num_vf_mc_hashes;
ae641bdc	75	u16 vlans_enabled;
f2ca0dbe AD	76	u32 flags;
f2ca0dbe AD	77	unsigned long last_nack;
4ae196df AD	78	};
4ae196df AD	79
f2ca0dbe	80	#define IGB_VF_FLAG_CTS 0x00000001 /* VF is clear to send data */
7d5753f0 AD	81	#define IGB_VF_FLAG_UNI_PROMISC 0x00000002 /* VF has unicast promisc */
7d5753f0 AD	82	#define IGB_VF_FLAG_MULTI_PROMISC 0x00000004 /* VF has multicast promisc */
f2ca0dbe	83
9d5c8243 AK	84	/* RX descriptor control thresholds.
	85	* PTHRESH - MAC will consider prefetch if it has fewer than this number of
	86	* descriptors available in its onboard memory.
	87	* Setting this to 0 disables RX descriptor prefetch.
	88	* HTHRESH - MAC will only prefetch if there are at least this many descriptors
	89	* available in host memory.
	90	* If PTHRESH is 0, this should also be 0.
	91	* WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
	92	* descriptors until either it has this many to write back, or the
	93	* ITR timer expires.
	94	*/
85b430b4	95	#define IGB_RX_PTHRESH (hw->mac.type <= e1000_82576 ? 16 : 8)
9d5c8243 AK	96	#define IGB_RX_HTHRESH 8
9d5c8243 AK	97	#define IGB_RX_WTHRESH 1
85b430b4 AD	98	#define IGB_TX_PTHRESH 8
	99	#define IGB_TX_HTHRESH 1
	100	#define IGB_TX_WTHRESH ((hw->mac.type == e1000_82576 && \
	101	adapter->msix_entries) ? 0 : 16)
9d5c8243 AK	102
	103	/* this is the size past which hardware will drop packets when setting LPE=0 */
	104	#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
	105
	106	/* Supported Rx Buffer Sizes */
	107	#define IGB_RXBUFFER_128 128 /* Used for packet split */
9d5c8243 AK	108	#define IGB_RXBUFFER_1024 1024
9d5c8243 AK	109	#define IGB_RXBUFFER_2048 2048
9d5c8243 AK	110	#define IGB_RXBUFFER_16384 16384
9d5c8243 AK	111
e1739522	112	#define MAX_STD_JUMBO_FRAME_SIZE 9234
9d5c8243 AK	113
	114	/* How many Tx Descriptors do we need to call netif_wake_queue ? */
	115	#define IGB_TX_QUEUE_WAKE 16
	116	/* How many Rx Buffers do we bundle into one write to the hardware ? */
	117	#define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */
	118
	119	#define AUTO_ALL_MODES 0
	120	#define IGB_EEPROM_APME 0x0400
	121
	122	#ifndef IGB_MASTER_SLAVE
	123	/* Switch to override PHY master/slave setting */
	124	#define IGB_MASTER_SLAVE e1000_ms_hw_default
	125	#endif
	126
	127	#define IGB_MNG_VLAN_NONE -1
	128
	129	/* wrapper around a pointer to a socket buffer,
	130	* so a DMA handle can be stored along with the buffer */
	131	struct igb_buffer {
	132	struct sk_buff *skb;
	133	dma_addr_t dma;
	134	union {
	135	/* TX */
	136	struct {
	137	unsigned long time_stamp;
0e014cb1 AD	138	u16 length;
0e014cb1 AD	139	u16 next_to_watch;
6366ad33	140	u16 mapped_as_page;
9d5c8243 AK	141	};
	142	/* RX */
	143	struct {
	144	struct page *page;
6366ad33 AD	145	dma_addr_t page_dma;
6366ad33 AD	146	u16 page_offset;
9d5c8243 AK	147	};
	148	};
	149	};
	150
8c0ab70a	151	struct igb_tx_queue_stats {
9d5c8243 AK	152	u64 packets;
9d5c8243 AK	153	u64 bytes;
04a5fcaa	154	u64 restart_queue;
9d5c8243 AK	155	};
9d5c8243 AK	156
8c0ab70a JDB	157	struct igb_rx_queue_stats {
	158	u64 packets;
	159	u64 bytes;
	160	u64 drops;
04a5fcaa AD	161	u64 csum_err;
04a5fcaa AD	162	u64 alloc_failed;
8c0ab70a JDB	163	};
8c0ab70a JDB	164
047e0030	165	struct igb_q_vector {
9d5c8243	166	struct igb_adapter adapter; / backlink */
047e0030 AD	167	struct igb_ring *rx_ring;
	168	struct igb_ring *tx_ring;
	169	struct napi_struct napi;
	170
	171	u32 eims_value;
	172	u16 cpu;
	173
	174	u16 itr_val;
	175	u8 set_itr;
	176	u8 itr_shift;
	177	void __iomem *itr_register;
	178
	179	char name[IFNAMSIZ + 9];
	180	};
	181
	182	struct igb_ring {
	183	struct igb_q_vector q_vector; / backlink to q_vector */
e694e964	184	struct net_device netdev; / back pointer to net_device */
80785298	185	struct pci_dev pdev; / pci device for dma mapping */
047e0030	186	dma_addr_t dma; /* phys address of the ring */
e694e964	187	void desc; / descriptor ring memory */
047e0030	188	unsigned int size; /* length of desc. ring in bytes */
2e5655e7	189	u16 count; /* number of desc. in the ring */
9d5c8243 AK	190	u16 next_to_use;
9d5c8243 AK	191	u16 next_to_clean;
2e5655e7 AD	192	u8 queue_index;
2e5655e7 AD	193	u8 reg_idx;
fce99e34 AD	194	void __iomem *head;
fce99e34 AD	195	void __iomem *tail;
9d5c8243 AK	196	struct igb_buffer buffer_info; / array of buffer info structs */
9d5c8243 AK	197
9d5c8243 AK	198	unsigned int total_bytes;
	199	unsigned int total_packets;
	200
85ad76b2 AD	201	u32 flags;
85ad76b2 AD	202
9d5c8243 AK	203	union {
	204	/* TX */
	205	struct {
8c0ab70a	206	struct igb_tx_queue_stats tx_stats;
9d5c8243 AK	207	bool detect_tx_hung;
	208	};
	209	/* RX */
	210	struct {
8c0ab70a	211	struct igb_rx_queue_stats rx_stats;
4c844851	212	u32 rx_buffer_len;
9d5c8243 AK	213	};
9d5c8243 AK	214	};
9d5c8243 AK	215	};
9d5c8243 AK	216
85ad76b2 AD	217	#define IGB_RING_FLAG_RX_CSUM 0x00000001 /* RX CSUM enabled */
	218	#define IGB_RING_FLAG_RX_SCTP_CSUM 0x00000002 /* SCTP CSUM offload enabled */
	219
	220	#define IGB_RING_FLAG_TX_CTX_IDX 0x00000001 /* HW requires context index */
	221
	222	#define IGB_ADVTXD_DCMD (E1000_TXD_CMD_EOP \| E1000_TXD_CMD_RS)
	223
9d5c8243 AK	224	#define E1000_RX_DESC_ADV(R, i) \
	225	(&(((union e1000_adv_rx_desc *)((R).desc))[i]))
	226	#define E1000_TX_DESC_ADV(R, i) \
	227	(&(((union e1000_adv_tx_desc *)((R).desc))[i]))
	228	#define E1000_TX_CTXTDESC_ADV(R, i) \
	229	(&(((struct e1000_adv_tx_context_desc *)((R).desc))[i]))
9d5c8243	230
d7ee5b3a AD	231	/* igb_desc_unused - calculate if we have unused descriptors */
	232	static inline int igb_desc_unused(struct igb_ring *ring)
	233	{
	234	if (ring->next_to_clean > ring->next_to_use)
	235	return ring->next_to_clean - ring->next_to_use - 1;
	236
	237	return ring->count + ring->next_to_clean - ring->next_to_use - 1;
	238	}
	239
9d5c8243 AK	240	/* board specific private data structure */
	241
	242	struct igb_adapter {
	243	struct timer_list watchdog_timer;
	244	struct timer_list phy_info_timer;
	245	struct vlan_group *vlgrp;
	246	u16 mng_vlan_id;
	247	u32 bd_number;
9d5c8243 AK	248	u32 wol;
	249	u32 en_mng_pt;
	250	u16 link_speed;
	251	u16 link_duplex;
2e5655e7	252
9d5c8243	253	/* Interrupt Throttle Rate */
4fc82adf AD	254	u32 rx_itr_setting;
4fc82adf AD	255	u32 tx_itr_setting;
9d5c8243 AK	256	u16 tx_itr;
9d5c8243 AK	257	u16 rx_itr;
9d5c8243 AK	258
	259	struct work_struct reset_task;
	260	struct work_struct watchdog_task;
	261	bool fc_autoneg;
	262	u8 tx_timeout_factor;
	263	struct timer_list blink_timer;
	264	unsigned long led_status;
	265
	266	/* TX */
	267	struct igb_ring tx_ring; / One per active queue */
9d5c8243	268	unsigned long tx_queue_len;
9d5c8243 AK	269	u32 tx_timeout_count;
	270
	271	/* RX */
	272	struct igb_ring rx_ring; / One per active queue */
	273	int num_tx_queues;
	274	int num_rx_queues;
	275
9d5c8243 AK	276	u32 max_frame_size;
	277	u32 min_frame_size;
	278
	279	/* OS defined structs */
	280	struct net_device *netdev;
9d5c8243	281	struct pci_dev *pdev;
38c845c7 PO	282	struct cyclecounter cycles;
38c845c7 PO	283	struct timecounter clock;
33af6bcc PO	284	struct timecompare compare;
33af6bcc PO	285	struct hwtstamp_config hwtstamp_config;
9d5c8243 AK	286
	287	/* structs defined in e1000_hw.h */
	288	struct e1000_hw hw;
	289	struct e1000_hw_stats stats;
	290	struct e1000_phy_info phy_info;
	291	struct e1000_phy_stats phy_stats;
	292
	293	u32 test_icr;
	294	struct igb_ring test_tx_ring;
	295	struct igb_ring test_rx_ring;
	296
	297	int msg_enable;
047e0030 AD	298
	299	unsigned int num_q_vectors;
	300	struct igb_q_vector *q_vector[MAX_Q_VECTORS];
9d5c8243 AK	301	struct msix_entry *msix_entries;
9d5c8243 AK	302	u32 eims_enable_mask;
844290e5	303	u32 eims_other;
9d5c8243 AK	304
	305	/* to not mess up cache alignment, always add to the bottom */
	306	unsigned long state;
7dfc16fa	307	unsigned int flags;
9d5c8243	308	u32 eeprom_wol;
42bfd33a	309
1bfaf07b	310	struct igb_ring *multi_tx_table[IGB_ABS_MAX_TX_QUEUES];
2e5655e7 AD	311	u16 tx_ring_count;
2e5655e7 AD	312	u16 rx_ring_count;
1bfaf07b	313	unsigned int vfs_allocated_count;
4ae196df	314	struct vf_data_storage *vf_data;
a99955fc	315	u32 rss_queues;
9d5c8243 AK	316	};
9d5c8243 AK	317
7dfc16fa	318	#define IGB_FLAG_HAS_MSI (1 << 0)
cbd347ad AD	319	#define IGB_FLAG_DCA_ENABLED (1 << 1)
cbd347ad AD	320	#define IGB_FLAG_QUAD_PORT_A (1 << 2)
4fc82adf	321	#define IGB_FLAG_QUEUE_PAIRS (1 << 3)
7dfc16fa	322
c5b9bd5e	323	#define IGB_82576_TSYNC_SHIFT 19
55cac248	324	#define IGB_82580_TSYNC_SHIFT 24
9d5c8243 AK	325	enum e1000_state_t {
	326	__IGB_TESTING,
	327	__IGB_RESETTING,
	328	__IGB_DOWN
	329	};
	330
	331	enum igb_boards {
	332	board_82575,
	333	};
	334
	335	extern char igb_driver_name[];
	336	extern char igb_driver_version[];
	337
	338	extern char igb_get_hw_dev_name(struct e1000_hw hw);
	339	extern int igb_up(struct igb_adapter *);
	340	extern void igb_down(struct igb_adapter *);
	341	extern void igb_reinit_locked(struct igb_adapter *);
	342	extern void igb_reset(struct igb_adapter *);
	343	extern int igb_set_spd_dplx(struct igb_adapter *, u16);
80785298 AD	344	extern int igb_setup_tx_resources(struct igb_ring *);
80785298 AD	345	extern int igb_setup_rx_resources(struct igb_ring *);
68fd9910 AD	346	extern void igb_free_tx_resources(struct igb_ring *);
68fd9910 AD	347	extern void igb_free_rx_resources(struct igb_ring *);
d7ee5b3a AD	348	extern void igb_configure_tx_ring(struct igb_adapter , struct igb_ring );
	349	extern void igb_configure_rx_ring(struct igb_adapter , struct igb_ring );
	350	extern void igb_setup_tctl(struct igb_adapter *);
	351	extern void igb_setup_rctl(struct igb_adapter *);
b1a436c3 AD	352	extern netdev_tx_t igb_xmit_frame_ring_adv(struct sk_buff , struct igb_ring );
	353	extern void igb_unmap_and_free_tx_resource(struct igb_ring *,
	354	struct igb_buffer *);
d7ee5b3a	355	extern void igb_alloc_rx_buffers_adv(struct igb_ring *, int);
9d5c8243 AK	356	extern void igb_update_stats(struct igb_adapter *);
	357	extern void igb_set_ethtool_ops(struct net_device *);
	358
f5f4cf08 AD	359	static inline s32 igb_reset_phy(struct e1000_hw *hw)
f5f4cf08 AD	360	{
a8d2a0c2 AD	361	if (hw->phy.ops.reset)
a8d2a0c2 AD	362	return hw->phy.ops.reset(hw);
f5f4cf08 AD	363
	364	return 0;
	365	}
	366
	367	static inline s32 igb_read_phy_reg(struct e1000_hw hw, u32 offset, u16 data)
	368	{
a8d2a0c2 AD	369	if (hw->phy.ops.read_reg)
a8d2a0c2 AD	370	return hw->phy.ops.read_reg(hw, offset, data);
f5f4cf08 AD	371
	372	return 0;
	373	}
	374
	375	static inline s32 igb_write_phy_reg(struct e1000_hw *hw, u32 offset, u16 data)
	376	{
a8d2a0c2 AD	377	if (hw->phy.ops.write_reg)
a8d2a0c2 AD	378	return hw->phy.ops.write_reg(hw, offset, data);
f5f4cf08 AD	379
	380	return 0;
	381	}
	382
	383	static inline s32 igb_get_phy_info(struct e1000_hw *hw)
	384	{
	385	if (hw->phy.ops.get_phy_info)
	386	return hw->phy.ops.get_phy_info(hw);
	387
	388	return 0;
	389	}
	390
9d5c8243	391	#endif /* _IGB_H_ */