297 lines
7.4 KiB
C
297 lines
7.4 KiB
C
/* QLogic qed NIC Driver
|
|
*
|
|
* Copyright (c) 2015 QLogic Corporation
|
|
*
|
|
* This software is available under the terms of the GNU General Public License
|
|
* (GPL) Version 2, available from the file COPYING in the main directory of
|
|
* this source tree.
|
|
*/
|
|
|
|
#ifndef _QED_LL2_H
|
|
#define _QED_LL2_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/list.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/spinlock.h>
|
|
#include <linux/qed/qed_chain.h>
|
|
#include <linux/qed/qed_ll2_if.h>
|
|
#include "qed.h"
|
|
#include "qed_hsi.h"
|
|
#include "qed_sp.h"
|
|
|
|
#define QED_MAX_NUM_OF_LL2_CONNECTIONS (4)
|
|
|
|
enum qed_ll2_roce_flavor_type {
|
|
QED_LL2_ROCE,
|
|
QED_LL2_RROCE,
|
|
MAX_QED_LL2_ROCE_FLAVOR_TYPE
|
|
};
|
|
|
|
enum qed_ll2_conn_type {
|
|
QED_LL2_TYPE_RESERVED,
|
|
QED_LL2_TYPE_ISCSI,
|
|
QED_LL2_TYPE_TEST,
|
|
QED_LL2_TYPE_ISCSI_OOO,
|
|
QED_LL2_TYPE_RESERVED2,
|
|
QED_LL2_TYPE_ROCE,
|
|
QED_LL2_TYPE_RESERVED3,
|
|
MAX_QED_LL2_RX_CONN_TYPE
|
|
};
|
|
|
|
struct qed_ll2_rx_packet {
|
|
struct list_head list_entry;
|
|
struct core_rx_bd_with_buff_len *rxq_bd;
|
|
dma_addr_t rx_buf_addr;
|
|
u16 buf_length;
|
|
void *cookie;
|
|
u8 placement_offset;
|
|
u16 parse_flags;
|
|
u16 packet_length;
|
|
u16 vlan;
|
|
u32 opaque_data[2];
|
|
};
|
|
|
|
struct qed_ll2_tx_packet {
|
|
struct list_head list_entry;
|
|
u16 bd_used;
|
|
u16 vlan;
|
|
u16 l4_hdr_offset_w;
|
|
u8 bd_flags;
|
|
bool notify_fw;
|
|
void *cookie;
|
|
|
|
struct {
|
|
struct core_tx_bd *txq_bd;
|
|
dma_addr_t tx_frag;
|
|
u16 frag_len;
|
|
} bds_set[ETH_TX_MAX_BDS_PER_NON_LSO_PACKET];
|
|
};
|
|
|
|
struct qed_ll2_rx_queue {
|
|
/* Lock protecting the Rx queue manipulation */
|
|
spinlock_t lock;
|
|
struct qed_chain rxq_chain;
|
|
struct qed_chain rcq_chain;
|
|
u8 rx_sb_index;
|
|
bool b_cb_registred;
|
|
__le16 *p_fw_cons;
|
|
struct list_head active_descq;
|
|
struct list_head free_descq;
|
|
struct list_head posting_descq;
|
|
struct qed_ll2_rx_packet *descq_array;
|
|
void __iomem *set_prod_addr;
|
|
};
|
|
|
|
struct qed_ll2_tx_queue {
|
|
/* Lock protecting the Tx queue manipulation */
|
|
spinlock_t lock;
|
|
struct qed_chain txq_chain;
|
|
u8 tx_sb_index;
|
|
bool b_cb_registred;
|
|
__le16 *p_fw_cons;
|
|
struct list_head active_descq;
|
|
struct list_head free_descq;
|
|
struct list_head sending_descq;
|
|
struct qed_ll2_tx_packet *descq_array;
|
|
struct qed_ll2_tx_packet *cur_send_packet;
|
|
struct qed_ll2_tx_packet cur_completing_packet;
|
|
u16 cur_completing_bd_idx;
|
|
void __iomem *doorbell_addr;
|
|
u16 bds_idx;
|
|
u16 cur_send_frag_num;
|
|
u16 cur_completing_frag_num;
|
|
bool b_completing_packet;
|
|
};
|
|
|
|
struct qed_ll2_info {
|
|
/* Lock protecting the state of LL2 */
|
|
struct mutex mutex;
|
|
enum qed_ll2_conn_type conn_type;
|
|
u32 cid;
|
|
u8 my_id;
|
|
u8 queue_id;
|
|
u8 tx_stats_id;
|
|
bool b_active;
|
|
u16 mtu;
|
|
u8 rx_drop_ttl0_flg;
|
|
u8 rx_vlan_removal_en;
|
|
u8 tx_tc;
|
|
enum core_tx_dest tx_dest;
|
|
enum core_error_handle ai_err_packet_too_big;
|
|
enum core_error_handle ai_err_no_buf;
|
|
u8 tx_stats_en;
|
|
struct qed_ll2_rx_queue rx_queue;
|
|
struct qed_ll2_tx_queue tx_queue;
|
|
u8 gsi_enable;
|
|
};
|
|
|
|
/**
|
|
* @brief qed_ll2_acquire_connection - allocate resources,
|
|
* starts rx & tx (if relevant) queues pair. Provides
|
|
* connecion handler as output parameter.
|
|
*
|
|
* @param p_hwfn
|
|
* @param p_params Contain various configuration properties
|
|
* @param rx_num_desc
|
|
* @param tx_num_desc
|
|
*
|
|
* @param p_connection_handle Output container for LL2 connection's handle
|
|
*
|
|
* @return 0 on success, failure otherwise
|
|
*/
|
|
int qed_ll2_acquire_connection(struct qed_hwfn *p_hwfn,
|
|
struct qed_ll2_info *p_params,
|
|
u16 rx_num_desc,
|
|
u16 tx_num_desc,
|
|
u8 *p_connection_handle);
|
|
|
|
/**
|
|
* @brief qed_ll2_establish_connection - start previously
|
|
* allocated LL2 queues pair
|
|
*
|
|
* @param p_hwfn
|
|
* @param p_ptt
|
|
* @param connection_handle LL2 connection's handle obtained from
|
|
* qed_ll2_require_connection
|
|
*
|
|
* @return 0 on success, failure otherwise
|
|
*/
|
|
int qed_ll2_establish_connection(struct qed_hwfn *p_hwfn, u8 connection_handle);
|
|
|
|
/**
|
|
* @brief qed_ll2_post_rx_buffers - submit buffers to LL2 Rx queue.
|
|
*
|
|
* @param p_hwfn
|
|
* @param connection_handle LL2 connection's handle obtained from
|
|
* qed_ll2_require_connection
|
|
* @param addr rx (physical address) buffers to submit
|
|
* @param cookie
|
|
* @param notify_fw produce corresponding Rx BD immediately
|
|
*
|
|
* @return 0 on success, failure otherwise
|
|
*/
|
|
int qed_ll2_post_rx_buffer(struct qed_hwfn *p_hwfn,
|
|
u8 connection_handle,
|
|
dma_addr_t addr,
|
|
u16 buf_len, void *cookie, u8 notify_fw);
|
|
|
|
/**
|
|
* @brief qed_ll2_prepare_tx_packet - request for start Tx BD
|
|
* to prepare Tx packet submission to FW.
|
|
*
|
|
* @param p_hwfn
|
|
* @param connection_handle LL2 connection's handle obtained from
|
|
* qed_ll2_require_connection
|
|
* @param num_of_bds a number of requested BD equals a number of
|
|
* fragments in Tx packet
|
|
* @param vlan VLAN to insert to packet (if insertion set)
|
|
* @param bd_flags
|
|
* @param l4_hdr_offset_w L4 Header Offset from start of packet
|
|
* (in words). This is needed if both l4_csum
|
|
* and ipv6_ext are set
|
|
* @param first_frag
|
|
* @param first_frag_len
|
|
* @param cookie
|
|
*
|
|
* @param notify_fw
|
|
*
|
|
* @return 0 on success, failure otherwise
|
|
*/
|
|
int qed_ll2_prepare_tx_packet(struct qed_hwfn *p_hwfn,
|
|
u8 connection_handle,
|
|
u8 num_of_bds,
|
|
u16 vlan,
|
|
u8 bd_flags,
|
|
u16 l4_hdr_offset_w,
|
|
enum qed_ll2_roce_flavor_type qed_roce_flavor,
|
|
dma_addr_t first_frag,
|
|
u16 first_frag_len, void *cookie, u8 notify_fw);
|
|
|
|
/**
|
|
* @brief qed_ll2_release_connection - releases resources
|
|
* allocated for LL2 connection
|
|
*
|
|
* @param p_hwfn
|
|
* @param connection_handle LL2 connection's handle obtained from
|
|
* qed_ll2_require_connection
|
|
*/
|
|
void qed_ll2_release_connection(struct qed_hwfn *p_hwfn, u8 connection_handle);
|
|
|
|
/**
|
|
* @brief qed_ll2_set_fragment_of_tx_packet - provides fragments to fill
|
|
* Tx BD of BDs requested by
|
|
* qed_ll2_prepare_tx_packet
|
|
*
|
|
* @param p_hwfn
|
|
* @param connection_handle LL2 connection's handle
|
|
* obtained from
|
|
* qed_ll2_require_connection
|
|
* @param addr
|
|
* @param nbytes
|
|
*
|
|
* @return 0 on success, failure otherwise
|
|
*/
|
|
int qed_ll2_set_fragment_of_tx_packet(struct qed_hwfn *p_hwfn,
|
|
u8 connection_handle,
|
|
dma_addr_t addr, u16 nbytes);
|
|
|
|
/**
|
|
* @brief qed_ll2_terminate_connection - stops Tx/Rx queues
|
|
*
|
|
*
|
|
* @param p_hwfn
|
|
* @param connection_handle LL2 connection's handle
|
|
* obtained from
|
|
* qed_ll2_require_connection
|
|
*
|
|
* @return 0 on success, failure otherwise
|
|
*/
|
|
int qed_ll2_terminate_connection(struct qed_hwfn *p_hwfn, u8 connection_handle);
|
|
|
|
/**
|
|
* @brief qed_ll2_get_stats - get LL2 queue's statistics
|
|
*
|
|
*
|
|
* @param p_hwfn
|
|
* @param connection_handle LL2 connection's handle obtained from
|
|
* qed_ll2_require_connection
|
|
* @param p_stats
|
|
*
|
|
* @return 0 on success, failure otherwise
|
|
*/
|
|
int qed_ll2_get_stats(struct qed_hwfn *p_hwfn,
|
|
u8 connection_handle, struct qed_ll2_stats *p_stats);
|
|
|
|
/**
|
|
* @brief qed_ll2_alloc - Allocates LL2 connections set
|
|
*
|
|
* @param p_hwfn
|
|
*
|
|
* @return pointer to alocated qed_ll2_info or NULL
|
|
*/
|
|
struct qed_ll2_info *qed_ll2_alloc(struct qed_hwfn *p_hwfn);
|
|
|
|
/**
|
|
* @brief qed_ll2_setup - Inits LL2 connections set
|
|
*
|
|
* @param p_hwfn
|
|
* @param p_ll2_connections
|
|
*
|
|
*/
|
|
void qed_ll2_setup(struct qed_hwfn *p_hwfn,
|
|
struct qed_ll2_info *p_ll2_connections);
|
|
|
|
/**
|
|
* @brief qed_ll2_free - Releases LL2 connections set
|
|
*
|
|
* @param p_hwfn
|
|
* @param p_ll2_connections
|
|
*
|
|
*/
|
|
void qed_ll2_free(struct qed_hwfn *p_hwfn,
|
|
struct qed_ll2_info *p_ll2_connections);
|
|
#endif
|