diff options
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_ll2.h')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_ll2.h | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.h b/drivers/net/ethernet/qlogic/qed/qed_ll2.h new file mode 100644 index 000000000..a174c6fc6 --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.h @@ -0,0 +1,260 @@ +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */ +/* QLogic qed NIC Driver + * Copyright (c) 2015-2017 QLogic Corporation + * Copyright (c) 2019-2020 Marvell International Ltd. + */ + +#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) +/* LL2 queues handles will be split as follows: + * first will be legacy queues, and then the ctx based queues. + */ +#define QED_MAX_NUM_OF_LL2_CONNS_PF (4) +#define QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF (3) + +#define QED_MAX_NUM_OF_CTX_LL2_CONNS_PF \ + (QED_MAX_NUM_OF_LL2_CONNS_PF - QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF) + +#define QED_LL2_LEGACY_CONN_BASE_PF 0 +#define QED_LL2_CTX_CONN_BASE_PF QED_MAX_NUM_OF_LEGACY_LL2_CONNS_PF + +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; + bool notify_fw; + void *cookie; + /* Flexible Array of bds_set determined by max_bds_per_packet */ + struct { + struct core_tx_bd *txq_bd; + dma_addr_t tx_frag; + u16 frag_len; + } bds_set[]; +}; + +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; + u8 ctx_based; + bool b_cb_registered; + __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 core_pwm_prod_update_data db_data; +}; + +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_registered; + __le16 *p_fw_cons; + struct list_head active_descq; + struct list_head free_descq; + struct list_head sending_descq; + u16 cur_completing_bd_idx; + void __iomem *doorbell_addr; + struct core_db_data db_msg; + u16 bds_idx; + u16 cur_send_frag_num; + u16 cur_completing_frag_num; + bool b_completing_packet; + void *descq_mem; /* memory for variable sized qed_ll2_tx_packet*/ + struct qed_ll2_tx_packet *cur_send_packet; + struct qed_ll2_tx_packet cur_completing_packet; +}; + +struct qed_ll2_info { + /* Lock protecting the state of LL2 */ + struct mutex mutex; + + struct qed_ll2_acquire_data_inputs input; + u32 cid; + u8 my_id; + u8 queue_id; + u8 tx_stats_id; + bool b_active; + enum core_tx_dest tx_dest; + u8 tx_stats_en; + bool main_func_queue; + struct qed_ll2_cbs cbs; + struct qed_ll2_rx_queue rx_queue; + struct qed_ll2_tx_queue tx_queue; +}; + +extern const struct qed_ll2_ops qed_ll2_ops_pass; + +/** + * qed_ll2_acquire_connection(): Allocate resources, + * starts rx & tx (if relevant) queues pair. + * Provides connecion handler as output + * parameter. + * + * @cxt: Pointer to the hw-function [opaque to some]. + * @data: Describes connection parameters. + * + * Return: Int. + */ +int qed_ll2_acquire_connection(void *cxt, struct qed_ll2_acquire_data *data); + +/** + * qed_ll2_establish_connection(): start previously allocated LL2 queues pair + * + * @cxt: Pointer to the hw-function [opaque to some]. + * @connection_handle: LL2 connection's handle obtained from + * qed_ll2_require_connection. + * + * Return: 0 on success, failure otherwise. + */ +int qed_ll2_establish_connection(void *cxt, u8 connection_handle); + +/** + * qed_ll2_post_rx_buffer(): Submit buffers to LL2 Rx queue. + * + * @cxt: Pointer to the hw-function [opaque to some]. + * @connection_handle: LL2 connection's handle obtained from + * qed_ll2_require_connection. + * @addr: RX (physical address) buffers to submit. + * @buf_len: Buffer Len. + * @cookie: Cookie. + * @notify_fw: Produce corresponding Rx BD immediately. + * + * Return: 0 on success, failure otherwise. + */ +int qed_ll2_post_rx_buffer(void *cxt, + u8 connection_handle, + dma_addr_t addr, + u16 buf_len, void *cookie, u8 notify_fw); + +/** + * qed_ll2_prepare_tx_packet(): Request for start Tx BD + * to prepare Tx packet submission to FW. + * + * @cxt: Pointer to the hw-function [opaque to some]. + * @connection_handle: Connection handle. + * @pkt: Info regarding the tx packet. + * @notify_fw: Issue doorbell to fw for this packet. + * + * Return: 0 on success, failure otherwise. + */ +int qed_ll2_prepare_tx_packet(void *cxt, + u8 connection_handle, + struct qed_ll2_tx_pkt_info *pkt, + bool notify_fw); + +/** + * qed_ll2_release_connection(): Releases resources allocated for LL2 + * connection. + * + * @cxt: Pointer to the hw-function [opaque to some]. + * @connection_handle: LL2 connection's handle obtained from + * qed_ll2_require_connection. + * + * Return: Void. + */ +void qed_ll2_release_connection(void *cxt, u8 connection_handle); + +/** + * qed_ll2_set_fragment_of_tx_packet(): Provides fragments to fill + * Tx BD of BDs requested by + * qed_ll2_prepare_tx_packet + * + * @cxt: Pointer to the hw-function [opaque to some]. + * @connection_handle: LL2 connection's handle obtained from + * qed_ll2_require_connection. + * @addr: Address. + * @nbytes: Number of bytes. + * + * Return: 0 on success, failure otherwise. + */ +int qed_ll2_set_fragment_of_tx_packet(void *cxt, + u8 connection_handle, + dma_addr_t addr, u16 nbytes); + +/** + * qed_ll2_terminate_connection(): Stops Tx/Rx queues + * + * @cxt: Pointer to the hw-function [opaque to some]. + * @connection_handle: LL2 connection's handle obtained from + * qed_ll2_require_connection. + * + * Return: 0 on success, failure otherwise. + */ +int qed_ll2_terminate_connection(void *cxt, u8 connection_handle); + +/** + * qed_ll2_get_stats(): Get LL2 queue's statistics + * + * @cxt: Pointer to the hw-function [opaque to some]. + * @connection_handle: LL2 connection's handle obtained from + * qed_ll2_require_connection. + * @p_stats: Pointer Status. + * + * Return: 0 on success, failure otherwise. + */ +int qed_ll2_get_stats(void *cxt, + u8 connection_handle, struct qed_ll2_stats *p_stats); + +/** + * qed_ll2_alloc(): Allocates LL2 connections set. + * + * @p_hwfn: HW device data. + * + * Return: Int. + */ +int qed_ll2_alloc(struct qed_hwfn *p_hwfn); + +/** + * qed_ll2_setup(): Inits LL2 connections set. + * + * @p_hwfn: HW device data. + * + * Return: Void. + * + */ +void qed_ll2_setup(struct qed_hwfn *p_hwfn); + +/** + * qed_ll2_free(): Releases LL2 connections set + * + * @p_hwfn: HW device data. + * + * Return: Void. + * + */ +void qed_ll2_free(struct qed_hwfn *p_hwfn); + +#endif |