330 lines
8.6 KiB
C
330 lines
8.6 KiB
C
/*******************************************************************************
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Intel(R) 82576 Virtual Function Linux driver
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Copyright(c) 2009 - 2012 Intel Corporation.
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This program is free software; you can redistribute it and/or modify it
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under the terms and conditions of the GNU General Public License,
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version 2, as published by the Free Software Foundation.
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This program is distributed in the hope it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc.,
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51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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The full GNU General Public License is included in this distribution in
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the file called "COPYING".
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Contact Information:
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e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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/* Linux PRO/1000 Ethernet Driver main header file */
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#ifndef _IGBVF_H_
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#define _IGBVF_H_
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#include <linux/types.h>
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#include <linux/timer.h>
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#include <linux/io.h>
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#include <linux/netdevice.h>
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#include <linux/if_vlan.h>
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#include "vf.h"
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/* Forward declarations */
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struct igbvf_info;
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struct igbvf_adapter;
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/* Interrupt defines */
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#define IGBVF_START_ITR 488 /* ~8000 ints/sec */
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#define IGBVF_4K_ITR 980
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#define IGBVF_20K_ITR 196
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#define IGBVF_70K_ITR 56
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enum latency_range {
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lowest_latency = 0,
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low_latency = 1,
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bulk_latency = 2,
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latency_invalid = 255
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};
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/* Interrupt modes, as used by the IntMode parameter */
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#define IGBVF_INT_MODE_LEGACY 0
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#define IGBVF_INT_MODE_MSI 1
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#define IGBVF_INT_MODE_MSIX 2
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/* Tx/Rx descriptor defines */
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#define IGBVF_DEFAULT_TXD 256
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#define IGBVF_MAX_TXD 4096
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#define IGBVF_MIN_TXD 80
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#define IGBVF_DEFAULT_RXD 256
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#define IGBVF_MAX_RXD 4096
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#define IGBVF_MIN_RXD 80
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#define IGBVF_MIN_ITR_USECS 10 /* 100000 irq/sec */
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#define IGBVF_MAX_ITR_USECS 10000 /* 100 irq/sec */
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/* RX descriptor control thresholds.
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* PTHRESH - MAC will consider prefetch if it has fewer than this number of
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* descriptors available in its onboard memory.
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* Setting this to 0 disables RX descriptor prefetch.
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* HTHRESH - MAC will only prefetch if there are at least this many descriptors
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* available in host memory.
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* If PTHRESH is 0, this should also be 0.
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* WTHRESH - RX descriptor writeback threshold - MAC will delay writing back
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* descriptors until either it has this many to write back, or the
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* ITR timer expires.
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*/
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#define IGBVF_RX_PTHRESH 16
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#define IGBVF_RX_HTHRESH 8
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#define IGBVF_RX_WTHRESH 1
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/* this is the size past which hardware will drop packets when setting LPE=0 */
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#define MAXIMUM_ETHERNET_VLAN_SIZE 1522
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#define IGBVF_FC_PAUSE_TIME 0x0680 /* 858 usec */
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/* How many Tx Descriptors do we need to call netif_wake_queue ? */
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#define IGBVF_TX_QUEUE_WAKE 32
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/* How many Rx Buffers do we bundle into one write to the hardware ? */
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#define IGBVF_RX_BUFFER_WRITE 16 /* Must be power of 2 */
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#define AUTO_ALL_MODES 0
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#define IGBVF_EEPROM_APME 0x0400
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#define IGBVF_MNG_VLAN_NONE (-1)
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/* Number of packet split data buffers (not including the header buffer) */
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#define PS_PAGE_BUFFERS (MAX_PS_BUFFERS - 1)
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enum igbvf_boards {
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board_vf,
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board_i350_vf,
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};
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struct igbvf_queue_stats {
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u64 packets;
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u64 bytes;
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};
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/*
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* wrappers around a pointer to a socket buffer,
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* so a DMA handle can be stored along with the buffer
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*/
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struct igbvf_buffer {
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dma_addr_t dma;
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struct sk_buff *skb;
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union {
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/* Tx */
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struct {
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unsigned long time_stamp;
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union e1000_adv_tx_desc *next_to_watch;
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u16 length;
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u16 mapped_as_page;
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};
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/* Rx */
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struct {
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struct page *page;
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u64 page_dma;
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unsigned int page_offset;
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};
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};
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};
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union igbvf_desc {
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union e1000_adv_rx_desc rx_desc;
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union e1000_adv_tx_desc tx_desc;
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struct e1000_adv_tx_context_desc tx_context_desc;
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};
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struct igbvf_ring {
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struct igbvf_adapter *adapter; /* backlink */
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union igbvf_desc *desc; /* pointer to ring memory */
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dma_addr_t dma; /* phys address of ring */
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unsigned int size; /* length of ring in bytes */
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unsigned int count; /* number of desc. in ring */
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u16 next_to_use;
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u16 next_to_clean;
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u16 head;
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u16 tail;
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/* array of buffer information structs */
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struct igbvf_buffer *buffer_info;
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struct napi_struct napi;
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char name[IFNAMSIZ + 5];
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u32 eims_value;
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u32 itr_val;
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enum latency_range itr_range;
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u16 itr_register;
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int set_itr;
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struct sk_buff *rx_skb_top;
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struct igbvf_queue_stats stats;
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};
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/* board specific private data structure */
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struct igbvf_adapter {
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struct timer_list watchdog_timer;
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struct timer_list blink_timer;
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struct work_struct reset_task;
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struct work_struct watchdog_task;
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const struct igbvf_info *ei;
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unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
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u32 bd_number;
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u32 rx_buffer_len;
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u32 polling_interval;
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u16 mng_vlan_id;
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u16 link_speed;
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u16 link_duplex;
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spinlock_t tx_queue_lock; /* prevent concurrent tail updates */
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/* track device up/down/testing state */
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unsigned long state;
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/* Interrupt Throttle Rate */
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u32 requested_itr; /* ints/sec or adaptive */
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u32 current_itr; /* Actual ITR register value, not ints/sec */
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/*
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* Tx
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*/
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struct igbvf_ring *tx_ring /* One per active queue */
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____cacheline_aligned_in_smp;
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unsigned int restart_queue;
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u32 txd_cmd;
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u32 tx_int_delay;
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u32 tx_abs_int_delay;
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unsigned int total_tx_bytes;
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unsigned int total_tx_packets;
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unsigned int total_rx_bytes;
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unsigned int total_rx_packets;
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/* Tx stats */
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u32 tx_timeout_count;
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u32 tx_fifo_head;
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u32 tx_head_addr;
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u32 tx_fifo_size;
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u32 tx_dma_failed;
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/*
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* Rx
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*/
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struct igbvf_ring *rx_ring;
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u32 rx_int_delay;
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u32 rx_abs_int_delay;
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/* Rx stats */
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u64 hw_csum_err;
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u64 hw_csum_good;
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u64 rx_hdr_split;
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u32 alloc_rx_buff_failed;
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u32 rx_dma_failed;
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unsigned int rx_ps_hdr_size;
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u32 max_frame_size;
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u32 min_frame_size;
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/* OS defined structs */
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struct net_device *netdev;
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struct pci_dev *pdev;
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struct net_device_stats net_stats;
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spinlock_t stats_lock; /* prevent concurrent stats updates */
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/* structs defined in e1000_hw.h */
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struct e1000_hw hw;
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/* The VF counters don't clear on read so we have to get a base
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* count on driver start up and always subtract that base on
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* on the first update, thus the flag..
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*/
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struct e1000_vf_stats stats;
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u64 zero_base;
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struct igbvf_ring test_tx_ring;
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struct igbvf_ring test_rx_ring;
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u32 test_icr;
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u32 msg_enable;
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struct msix_entry *msix_entries;
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int int_mode;
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u32 eims_enable_mask;
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u32 eims_other;
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u32 int_counter0;
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u32 int_counter1;
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u32 eeprom_wol;
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u32 wol;
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u32 pba;
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bool fc_autoneg;
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unsigned long led_status;
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unsigned int flags;
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unsigned long last_reset;
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};
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struct igbvf_info {
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enum e1000_mac_type mac;
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unsigned int flags;
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u32 pba;
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void (*init_ops)(struct e1000_hw *);
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s32 (*get_variants)(struct igbvf_adapter *);
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};
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/* hardware capability, feature, and workaround flags */
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#define IGBVF_FLAG_RX_CSUM_DISABLED (1 << 0)
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#define IGBVF_FLAG_RX_LB_VLAN_BSWAP (1 << 1)
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#define IGBVF_RX_DESC_ADV(R, i) \
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(&((((R).desc))[i].rx_desc))
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#define IGBVF_TX_DESC_ADV(R, i) \
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(&((((R).desc))[i].tx_desc))
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#define IGBVF_TX_CTXTDESC_ADV(R, i) \
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(&((((R).desc))[i].tx_context_desc))
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enum igbvf_state_t {
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__IGBVF_TESTING,
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__IGBVF_RESETTING,
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__IGBVF_DOWN
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};
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extern char igbvf_driver_name[];
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extern const char igbvf_driver_version[];
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void igbvf_check_options(struct igbvf_adapter *);
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void igbvf_set_ethtool_ops(struct net_device *);
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int igbvf_up(struct igbvf_adapter *);
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void igbvf_down(struct igbvf_adapter *);
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void igbvf_reinit_locked(struct igbvf_adapter *);
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int igbvf_setup_rx_resources(struct igbvf_adapter *, struct igbvf_ring *);
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int igbvf_setup_tx_resources(struct igbvf_adapter *, struct igbvf_ring *);
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void igbvf_free_rx_resources(struct igbvf_ring *);
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void igbvf_free_tx_resources(struct igbvf_ring *);
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void igbvf_update_stats(struct igbvf_adapter *);
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extern unsigned int copybreak;
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#endif /* _IGBVF_H_ */
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