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332 lines
8.9 KiB
C
332 lines
8.9 KiB
C
/*******************************************************************************
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Intel(R) Gigabit Ethernet Linux driver
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Copyright(c) 2007 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 _IGB_H_
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#define _IGB_H_
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#include "e1000_mac.h"
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#include "e1000_82575.h"
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struct igb_adapter;
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#ifdef CONFIG_IGB_LRO
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#include <linux/inet_lro.h>
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#define MAX_LRO_AGGR 32
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#define MAX_LRO_DESCRIPTORS 8
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#endif
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/* Interrupt defines */
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#define IGB_MAX_TX_CLEAN 72
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#define IGB_MIN_DYN_ITR 3000
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#define IGB_MAX_DYN_ITR 96000
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/* ((1000000000ns / (6000ints/s * 1024ns)) << 2 = 648 */
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#define IGB_START_ITR 648
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#define IGB_DYN_ITR_PACKET_THRESHOLD 2
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#define IGB_DYN_ITR_LENGTH_LOW 200
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#define IGB_DYN_ITR_LENGTH_HIGH 1000
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/* TX/RX descriptor defines */
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#define IGB_DEFAULT_TXD 256
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#define IGB_MIN_TXD 80
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#define IGB_MAX_TXD 4096
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#define IGB_DEFAULT_RXD 256
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#define IGB_MIN_RXD 80
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#define IGB_MAX_RXD 4096
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#define IGB_DEFAULT_ITR 3 /* dynamic */
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#define IGB_MAX_ITR_USECS 10000
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#define IGB_MIN_ITR_USECS 10
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/* Transmit and receive queues */
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#define IGB_MAX_RX_QUEUES 4
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#define IGB_MAX_TX_QUEUES 4
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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 IGB_RX_PTHRESH 16
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#define IGB_RX_HTHRESH 8
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#define IGB_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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/* Supported Rx Buffer Sizes */
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#define IGB_RXBUFFER_128 128 /* Used for packet split */
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#define IGB_RXBUFFER_256 256 /* Used for packet split */
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#define IGB_RXBUFFER_512 512
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#define IGB_RXBUFFER_1024 1024
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#define IGB_RXBUFFER_2048 2048
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#define IGB_RXBUFFER_4096 4096
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#define IGB_RXBUFFER_8192 8192
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#define IGB_RXBUFFER_16384 16384
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/* Packet Buffer allocations */
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/* How many Tx Descriptors do we need to call netif_wake_queue ? */
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#define IGB_TX_QUEUE_WAKE 16
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/* How many Rx Buffers do we bundle into one write to the hardware ? */
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#define IGB_RX_BUFFER_WRITE 16 /* Must be power of 2 */
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#define AUTO_ALL_MODES 0
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#define IGB_EEPROM_APME 0x0400
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#ifndef IGB_MASTER_SLAVE
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/* Switch to override PHY master/slave setting */
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#define IGB_MASTER_SLAVE e1000_ms_hw_default
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#endif
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#define IGB_MNG_VLAN_NONE -1
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/* wrapper 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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struct igb_buffer {
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struct sk_buff *skb;
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dma_addr_t dma;
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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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u32 length;
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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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struct igb_queue_stats {
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u64 packets;
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u64 bytes;
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};
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struct igb_ring {
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struct igb_adapter *adapter; /* backlink */
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void *desc; /* descriptor ring memory */
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dma_addr_t dma; /* phys address of the ring */
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unsigned int size; /* length of desc. ring in bytes */
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unsigned int count; /* number of desc. in the 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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struct igb_buffer *buffer_info; /* array of buffer info structs */
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u32 eims_value;
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u32 itr_val;
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u16 itr_register;
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u16 cpu;
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int queue_index;
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unsigned int total_bytes;
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unsigned int total_packets;
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union {
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/* TX */
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struct {
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struct igb_queue_stats tx_stats;
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bool detect_tx_hung;
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};
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/* RX */
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struct {
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struct igb_queue_stats rx_stats;
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struct napi_struct napi;
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int set_itr;
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struct igb_ring *buddy;
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#ifdef CONFIG_IGB_LRO
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struct net_lro_mgr lro_mgr;
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bool lro_used;
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#endif
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};
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};
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char name[IFNAMSIZ + 5];
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};
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#define IGB_DESC_UNUSED(R) \
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((((R)->next_to_clean > (R)->next_to_use) ? 0 : (R)->count) + \
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(R)->next_to_clean - (R)->next_to_use - 1)
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#define E1000_RX_DESC_ADV(R, i) \
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(&(((union e1000_adv_rx_desc *)((R).desc))[i]))
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#define E1000_TX_DESC_ADV(R, i) \
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(&(((union e1000_adv_tx_desc *)((R).desc))[i]))
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#define E1000_TX_CTXTDESC_ADV(R, i) \
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(&(((struct e1000_adv_tx_context_desc *)((R).desc))[i]))
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#define E1000_GET_DESC(R, i, type) (&(((struct type *)((R).desc))[i]))
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#define E1000_TX_DESC(R, i) E1000_GET_DESC(R, i, e1000_tx_desc)
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#define E1000_RX_DESC(R, i) E1000_GET_DESC(R, i, e1000_rx_desc)
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/* board specific private data structure */
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struct igb_adapter {
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struct timer_list watchdog_timer;
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struct timer_list phy_info_timer;
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struct vlan_group *vlgrp;
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u16 mng_vlan_id;
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u32 bd_number;
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u32 rx_buffer_len;
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u32 wol;
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u32 en_mng_pt;
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u16 link_speed;
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u16 link_duplex;
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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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/* Interrupt Throttle Rate */
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u32 itr;
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u32 itr_setting;
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u16 tx_itr;
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u16 rx_itr;
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struct work_struct reset_task;
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struct work_struct watchdog_task;
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bool fc_autoneg;
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u8 tx_timeout_factor;
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struct timer_list blink_timer;
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unsigned long led_status;
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/* TX */
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struct igb_ring *tx_ring; /* One per active queue */
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unsigned int restart_queue;
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unsigned long tx_queue_len;
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u32 txd_cmd;
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u32 gotc;
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u64 gotc_old;
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u64 tpt_old;
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u64 colc_old;
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u32 tx_timeout_count;
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/* RX */
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struct igb_ring *rx_ring; /* One per active queue */
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int num_tx_queues;
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int num_rx_queues;
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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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bool rx_csum;
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u32 gorc;
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u64 gorc_old;
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u16 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 napi_struct napi;
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struct pci_dev *pdev;
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struct net_device_stats net_stats;
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/* structs defined in e1000_hw.h */
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struct e1000_hw hw;
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struct e1000_hw_stats stats;
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struct e1000_phy_info phy_info;
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struct e1000_phy_stats phy_stats;
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u32 test_icr;
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struct igb_ring test_tx_ring;
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struct igb_ring test_rx_ring;
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int msg_enable;
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struct msix_entry *msix_entries;
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u32 eims_enable_mask;
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u32 eims_other;
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/* to not mess up cache alignment, always add to the bottom */
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unsigned long state;
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unsigned int flags;
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u32 eeprom_wol;
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/* for ioport free */
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int bars;
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int need_ioport;
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struct igb_ring *multi_tx_table[IGB_MAX_TX_QUEUES];
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#ifdef CONFIG_IGB_LRO
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unsigned int lro_max_aggr;
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unsigned int lro_aggregated;
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unsigned int lro_flushed;
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unsigned int lro_no_desc;
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#endif
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};
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#define IGB_FLAG_HAS_MSI (1 << 0)
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#define IGB_FLAG_MSI_ENABLE (1 << 1)
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#define IGB_FLAG_HAS_DCA (1 << 2)
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#define IGB_FLAG_DCA_ENABLED (1 << 3)
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#define IGB_FLAG_IN_NETPOLL (1 << 5)
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#define IGB_FLAG_QUAD_PORT_A (1 << 6)
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#define IGB_FLAG_NEED_CTX_IDX (1 << 7)
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enum e1000_state_t {
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__IGB_TESTING,
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__IGB_RESETTING,
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__IGB_DOWN
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};
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enum igb_boards {
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board_82575,
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};
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extern char igb_driver_name[];
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extern char igb_driver_version[];
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extern char *igb_get_hw_dev_name(struct e1000_hw *hw);
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extern int igb_up(struct igb_adapter *);
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extern void igb_down(struct igb_adapter *);
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extern void igb_reinit_locked(struct igb_adapter *);
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extern void igb_reset(struct igb_adapter *);
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extern int igb_set_spd_dplx(struct igb_adapter *, u16);
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extern int igb_setup_tx_resources(struct igb_adapter *, struct igb_ring *);
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extern int igb_setup_rx_resources(struct igb_adapter *, struct igb_ring *);
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extern void igb_update_stats(struct igb_adapter *);
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extern void igb_set_ethtool_ops(struct net_device *);
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#endif /* _IGB_H_ */
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