Release 4.18 drivers/net/ethernet/intel/igbvf/igbvf.h
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright(c) 2009 - 2018 Intel Corporation. */
/* Linux PRO/1000 Ethernet Driver main header file */
#ifndef _IGBVF_H_
#define _IGBVF_H_
#include <linux/types.h>
#include <linux/timer.h>
#include <linux/io.h>
#include <linux/netdevice.h>
#include <linux/if_vlan.h>
#include "vf.h"
/* Forward declarations */
struct igbvf_info;
struct igbvf_adapter;
/* Interrupt defines */
#define IGBVF_START_ITR 488
/* ~8000 ints/sec */
#define IGBVF_4K_ITR 980
#define IGBVF_20K_ITR 196
#define IGBVF_70K_ITR 56
enum latency_range {
lowest_latency = 0,
low_latency = 1,
bulk_latency = 2,
latency_invalid = 255
};
/* Interrupt modes, as used by the IntMode parameter */
#define IGBVF_INT_MODE_LEGACY 0
#define IGBVF_INT_MODE_MSI 1
#define IGBVF_INT_MODE_MSIX 2
/* Tx/Rx descriptor defines */
#define IGBVF_DEFAULT_TXD 256
#define IGBVF_MAX_TXD 4096
#define IGBVF_MIN_TXD 80
#define IGBVF_DEFAULT_RXD 256
#define IGBVF_MAX_RXD 4096
#define IGBVF_MIN_RXD 80
#define IGBVF_MIN_ITR_USECS 10
/* 100000 irq/sec */
#define IGBVF_MAX_ITR_USECS 10000
/* 100 irq/sec */
/* 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 IGBVF_RX_PTHRESH 16
#define IGBVF_RX_HTHRESH 8
#define IGBVF_RX_WTHRESH 1
/* this is the size past which hardware will drop packets when setting LPE=0 */
#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
#define IGBVF_FC_PAUSE_TIME 0x0680
/* 858 usec */
/* How many Tx Descriptors do we need to call netif_wake_queue ? */
#define IGBVF_TX_QUEUE_WAKE 32
/* How many Rx Buffers do we bundle into one write to the hardware ? */
#define IGBVF_RX_BUFFER_WRITE 16
/* Must be power of 2 */
#define AUTO_ALL_MODES 0
#define IGBVF_EEPROM_APME 0x0400
#define IGBVF_MNG_VLAN_NONE (-1)
#define IGBVF_MAX_MAC_FILTERS 3
/* Number of packet split data buffers (not including the header buffer) */
#define PS_PAGE_BUFFERS (MAX_PS_BUFFERS - 1)
enum igbvf_boards {
board_vf,
board_i350_vf,
};
struct igbvf_queue_stats {
u64 packets;
u64 bytes;
};
/* wrappers around a pointer to a socket buffer,
* so a DMA handle can be stored along with the buffer
*/
struct igbvf_buffer {
dma_addr_t dma;
struct sk_buff *skb;
union {
/* Tx */
struct {
unsigned long time_stamp;
union e1000_adv_tx_desc *next_to_watch;
u16 length;
u16 mapped_as_page;
};
/* Rx */
struct {
struct page *page;
u64 page_dma;
unsigned int page_offset;
};
};
};
union igbvf_desc {
union e1000_adv_rx_desc rx_desc;
union e1000_adv_tx_desc tx_desc;
struct e1000_adv_tx_context_desc tx_context_desc;
};
struct igbvf_ring {
struct igbvf_adapter *adapter; /* backlink */
union igbvf_desc *desc; /* pointer to ring memory */
dma_addr_t dma; /* phys address of ring */
unsigned int size; /* length of ring in bytes */
unsigned int count; /* number of desc. in ring */
u16 next_to_use;
u16 next_to_clean;
u16 head;
u16 tail;
/* array of buffer information structs */
struct igbvf_buffer *buffer_info;
struct napi_struct napi;
char name[IFNAMSIZ + 5];
u32 eims_value;
u32 itr_val;
enum latency_range itr_range;
u16 itr_register;
int set_itr;
struct sk_buff *rx_skb_top;
struct igbvf_queue_stats stats;
};
/* board specific private data structure */
struct igbvf_adapter {
struct timer_list watchdog_timer;
struct timer_list blink_timer;
struct work_struct reset_task;
struct work_struct watchdog_task;
const struct igbvf_info *ei;
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
u32 bd_number;
u32 rx_buffer_len;
u32 polling_interval;
u16 mng_vlan_id;
u16 link_speed;
u16 link_duplex;
spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
/* track device up/down/testing state */
unsigned long state;
/* Interrupt Throttle Rate */
u32 requested_itr; /* ints/sec or adaptive */
u32 current_itr; /* Actual ITR register value, not ints/sec */
/* Tx */
struct igbvf_ring *tx_ring /* One per active queue */
____cacheline_aligned_in_smp;
unsigned int restart_queue;
u32 txd_cmd;
u32 tx_int_delay;
u32 tx_abs_int_delay;
unsigned int total_tx_bytes;
unsigned int total_tx_packets;
unsigned int total_rx_bytes;
unsigned int total_rx_packets;
/* Tx stats */
u32 tx_timeout_count;
u32 tx_fifo_head;
u32 tx_head_addr;
u32 tx_fifo_size;
u32 tx_dma_failed;
/* Rx */
struct igbvf_ring *rx_ring;
u32 rx_int_delay;
u32 rx_abs_int_delay;
/* Rx stats */
u64 hw_csum_err;
u64 hw_csum_good;
u64 rx_hdr_split;
u32 alloc_rx_buff_failed;
u32 rx_dma_failed;
unsigned int rx_ps_hdr_size;
u32 max_frame_size;
u32 min_frame_size;
/* OS defined structs */
struct net_device *netdev;
struct pci_dev *pdev;
spinlock_t stats_lock; /* prevent concurrent stats updates */
/* structs defined in e1000_hw.h */
struct e1000_hw hw;
/* The VF counters don't clear on read so we have to get a base
* count on driver start up and always subtract that base on
* on the first update, thus the flag..
*/
struct e1000_vf_stats stats;
u64 zero_base;
struct igbvf_ring test_tx_ring;
struct igbvf_ring test_rx_ring;
u32 test_icr;
u32 msg_enable;
struct msix_entry *msix_entries;
int int_mode;
u32 eims_enable_mask;
u32 eims_other;
u32 int_counter0;
u32 int_counter1;
u32 eeprom_wol;
u32 wol;
u32 pba;
bool fc_autoneg;
unsigned long led_status;
unsigned int flags;
unsigned long last_reset;
};
struct igbvf_info {
enum e1000_mac_type mac;
unsigned int flags;
u32 pba;
void (*init_ops)(struct e1000_hw *);
s32 (*get_variants)(struct igbvf_adapter *);
};
/* hardware capability, feature, and workaround flags */
#define IGBVF_FLAG_RX_CSUM_DISABLED BIT(0)
#define IGBVF_FLAG_RX_LB_VLAN_BSWAP BIT(1)
#define IGBVF_RX_DESC_ADV(R, i) \
(&((((R).desc))[i].rx_desc))
#define IGBVF_TX_DESC_ADV(R, i) \
(&((((R).desc))[i].tx_desc))
#define IGBVF_TX_CTXTDESC_ADV(R, i) \
(&((((R).desc))[i].tx_context_desc))
enum igbvf_state_t {
__IGBVF_TESTING,
__IGBVF_RESETTING,
__IGBVF_DOWN
};
extern char igbvf_driver_name[];
extern const char igbvf_driver_version[];
void igbvf_check_options(struct igbvf_adapter *);
void igbvf_set_ethtool_ops(struct net_device *);
int igbvf_up(struct igbvf_adapter *);
void igbvf_down(struct igbvf_adapter *);
void igbvf_reinit_locked(struct igbvf_adapter *);
int igbvf_setup_rx_resources(struct igbvf_adapter *, struct igbvf_ring *);
int igbvf_setup_tx_resources(struct igbvf_adapter *, struct igbvf_ring *);
void igbvf_free_rx_resources(struct igbvf_ring *);
void igbvf_free_tx_resources(struct igbvf_ring *);
void igbvf_update_stats(struct igbvf_adapter *);
extern unsigned int copybreak;
#endif /* _IGBVF_H_ */
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