507 lines
13 KiB
C
507 lines
13 KiB
C
/* QLogic qed NIC Driver
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* Copyright (c) 2015-2017 QLogic Corporation
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and /or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#ifndef _QED_SP_H
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#define _QED_SP_H
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/qed/qed_chain.h>
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#include "qed.h"
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#include "qed_hsi.h"
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enum spq_mode {
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QED_SPQ_MODE_BLOCK, /* Client will poll a designated mem. address */
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QED_SPQ_MODE_CB, /* Client supplies a callback */
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QED_SPQ_MODE_EBLOCK, /* QED should block until completion */
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};
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struct qed_spq_comp_cb {
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void (*function)(struct qed_hwfn *,
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void *,
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union event_ring_data *,
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u8 fw_return_code);
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void *cookie;
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};
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/**
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* @brief qed_eth_cqe_completion - handles the completion of a
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* ramrod on the cqe ring
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*
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* @param p_hwfn
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* @param cqe
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*
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* @return int
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*/
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int qed_eth_cqe_completion(struct qed_hwfn *p_hwfn,
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struct eth_slow_path_rx_cqe *cqe);
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/**
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* @file
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*
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* QED Slow-hwfn queue interface
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*/
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union ramrod_data {
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struct pf_start_ramrod_data pf_start;
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struct pf_update_ramrod_data pf_update;
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struct rx_queue_start_ramrod_data rx_queue_start;
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struct rx_queue_update_ramrod_data rx_queue_update;
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struct rx_queue_stop_ramrod_data rx_queue_stop;
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struct tx_queue_start_ramrod_data tx_queue_start;
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struct tx_queue_stop_ramrod_data tx_queue_stop;
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struct vport_start_ramrod_data vport_start;
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struct vport_stop_ramrod_data vport_stop;
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struct rx_update_gft_filter_data rx_update_gft;
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struct vport_update_ramrod_data vport_update;
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struct core_rx_start_ramrod_data core_rx_queue_start;
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struct core_rx_stop_ramrod_data core_rx_queue_stop;
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struct core_tx_start_ramrod_data core_tx_queue_start;
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struct core_tx_stop_ramrod_data core_tx_queue_stop;
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struct vport_filter_update_ramrod_data vport_filter_update;
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struct rdma_init_func_ramrod_data rdma_init_func;
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struct rdma_close_func_ramrod_data rdma_close_func;
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struct rdma_register_tid_ramrod_data rdma_register_tid;
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struct rdma_deregister_tid_ramrod_data rdma_deregister_tid;
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struct roce_create_qp_resp_ramrod_data roce_create_qp_resp;
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struct roce_create_qp_req_ramrod_data roce_create_qp_req;
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struct roce_modify_qp_resp_ramrod_data roce_modify_qp_resp;
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struct roce_modify_qp_req_ramrod_data roce_modify_qp_req;
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struct roce_query_qp_resp_ramrod_data roce_query_qp_resp;
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struct roce_query_qp_req_ramrod_data roce_query_qp_req;
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struct roce_destroy_qp_resp_ramrod_data roce_destroy_qp_resp;
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struct roce_destroy_qp_req_ramrod_data roce_destroy_qp_req;
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struct roce_init_func_ramrod_data roce_init_func;
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struct rdma_create_cq_ramrod_data rdma_create_cq;
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struct rdma_destroy_cq_ramrod_data rdma_destroy_cq;
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struct rdma_srq_create_ramrod_data rdma_create_srq;
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struct rdma_srq_destroy_ramrod_data rdma_destroy_srq;
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struct rdma_srq_modify_ramrod_data rdma_modify_srq;
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struct iwarp_create_qp_ramrod_data iwarp_create_qp;
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struct iwarp_tcp_offload_ramrod_data iwarp_tcp_offload;
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struct iwarp_mpa_offload_ramrod_data iwarp_mpa_offload;
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struct iwarp_modify_qp_ramrod_data iwarp_modify_qp;
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struct iwarp_init_func_ramrod_data iwarp_init_func;
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struct fcoe_init_ramrod_params fcoe_init;
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struct fcoe_conn_offload_ramrod_params fcoe_conn_ofld;
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struct fcoe_conn_terminate_ramrod_params fcoe_conn_terminate;
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struct fcoe_stat_ramrod_params fcoe_stat;
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struct iscsi_slow_path_hdr iscsi_empty;
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struct iscsi_init_ramrod_params iscsi_init;
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struct iscsi_spe_func_dstry iscsi_destroy;
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struct iscsi_spe_conn_offload iscsi_conn_offload;
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struct iscsi_conn_update_ramrod_params iscsi_conn_update;
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struct iscsi_spe_conn_mac_update iscsi_conn_mac_update;
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struct iscsi_spe_conn_termination iscsi_conn_terminate;
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struct vf_start_ramrod_data vf_start;
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struct vf_stop_ramrod_data vf_stop;
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};
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#define EQ_MAX_CREDIT 0xffffffff
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enum spq_priority {
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QED_SPQ_PRIORITY_NORMAL,
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QED_SPQ_PRIORITY_HIGH,
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};
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union qed_spq_req_comp {
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struct qed_spq_comp_cb cb;
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u64 *done_addr;
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};
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struct qed_spq_comp_done {
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unsigned int done;
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u8 fw_return_code;
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};
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struct qed_spq_entry {
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struct list_head list;
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u8 flags;
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/* HSI slow path element */
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struct slow_path_element elem;
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union ramrod_data ramrod;
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enum spq_priority priority;
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/* pending queue for this entry */
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struct list_head *queue;
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enum spq_mode comp_mode;
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struct qed_spq_comp_cb comp_cb;
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struct qed_spq_comp_done comp_done; /* SPQ_MODE_EBLOCK */
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/* Posted entry for unlimited list entry in EBLOCK mode */
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struct qed_spq_entry *post_ent;
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};
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struct qed_eq {
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struct qed_chain chain;
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u8 eq_sb_index; /* index within the SB */
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__le16 *p_fw_cons; /* ptr to index value */
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};
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struct qed_consq {
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struct qed_chain chain;
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};
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typedef int
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(*qed_spq_async_comp_cb)(struct qed_hwfn *p_hwfn,
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u8 opcode,
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u16 echo,
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union event_ring_data *data,
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u8 fw_return_code);
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int
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qed_spq_register_async_cb(struct qed_hwfn *p_hwfn,
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enum protocol_type protocol_id,
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qed_spq_async_comp_cb cb);
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void
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qed_spq_unregister_async_cb(struct qed_hwfn *p_hwfn,
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enum protocol_type protocol_id);
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struct qed_spq {
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spinlock_t lock; /* SPQ lock */
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struct list_head unlimited_pending;
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struct list_head pending;
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struct list_head completion_pending;
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struct list_head free_pool;
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struct qed_chain chain;
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/* allocated dma-able memory for spq entries (+ramrod data) */
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dma_addr_t p_phys;
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struct qed_spq_entry *p_virt;
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#define SPQ_RING_SIZE \
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(CORE_SPQE_PAGE_SIZE_BYTES / sizeof(struct slow_path_element))
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/* Bitmap for handling out-of-order completions */
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DECLARE_BITMAP(p_comp_bitmap, SPQ_RING_SIZE);
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u8 comp_bitmap_idx;
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/* Statistics */
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u32 unlimited_pending_count;
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u32 normal_count;
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u32 high_count;
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u32 comp_sent_count;
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u32 comp_count;
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u32 cid;
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qed_spq_async_comp_cb async_comp_cb[MAX_PROTOCOL_TYPE];
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};
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/**
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* @brief qed_spq_post - Posts a Slow hwfn request to FW, or lacking that
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* Pends it to the future list.
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*
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* @param p_hwfn
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* @param p_req
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*
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* @return int
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*/
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int qed_spq_post(struct qed_hwfn *p_hwfn,
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struct qed_spq_entry *p_ent,
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u8 *fw_return_code);
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/**
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* @brief qed_spq_allocate - Alloocates & initializes the SPQ and EQ.
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*
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* @param p_hwfn
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*
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* @return int
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*/
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int qed_spq_alloc(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_spq_setup - Reset the SPQ to its start state.
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*
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* @param p_hwfn
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*/
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void qed_spq_setup(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_spq_deallocate - Deallocates the given SPQ struct.
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*
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* @param p_hwfn
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*/
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void qed_spq_free(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_spq_get_entry - Obtain an entrry from the spq
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* free pool list.
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*
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*
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*
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* @param p_hwfn
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* @param pp_ent
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*
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* @return int
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*/
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int
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qed_spq_get_entry(struct qed_hwfn *p_hwfn,
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struct qed_spq_entry **pp_ent);
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/**
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* @brief qed_spq_return_entry - Return an entry to spq free
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* pool list
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*
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* @param p_hwfn
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* @param p_ent
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*/
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void qed_spq_return_entry(struct qed_hwfn *p_hwfn,
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struct qed_spq_entry *p_ent);
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/**
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* @brief qed_eq_allocate - Allocates & initializes an EQ struct
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*
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* @param p_hwfn
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* @param num_elem number of elements in the eq
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*
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* @return int
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*/
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int qed_eq_alloc(struct qed_hwfn *p_hwfn, u16 num_elem);
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/**
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* @brief qed_eq_setup - Reset the EQ to its start state.
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*
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* @param p_hwfn
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*/
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void qed_eq_setup(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_eq_free - deallocates the given EQ struct.
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*
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* @param p_hwfn
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*/
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void qed_eq_free(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_eq_prod_update - update the FW with default EQ producer
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*
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* @param p_hwfn
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* @param prod
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*/
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void qed_eq_prod_update(struct qed_hwfn *p_hwfn,
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u16 prod);
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/**
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* @brief qed_eq_completion - Completes currently pending EQ elements
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*
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* @param p_hwfn
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* @param cookie
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*
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* @return int
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*/
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int qed_eq_completion(struct qed_hwfn *p_hwfn,
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void *cookie);
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/**
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* @brief qed_spq_completion - Completes a single event
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*
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* @param p_hwfn
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* @param echo - echo value from cookie (used for determining completion)
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* @param p_data - data from cookie (used in callback function if applicable)
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*
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* @return int
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*/
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int qed_spq_completion(struct qed_hwfn *p_hwfn,
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__le16 echo,
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u8 fw_return_code,
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union event_ring_data *p_data);
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/**
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* @brief qed_spq_get_cid - Given p_hwfn, return cid for the hwfn's SPQ
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*
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* @param p_hwfn
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*
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* @return u32 - SPQ CID
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*/
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u32 qed_spq_get_cid(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_consq_alloc - Allocates & initializes an ConsQ
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* struct
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*
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* @param p_hwfn
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*
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* @return int
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*/
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int qed_consq_alloc(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_consq_setup - Reset the ConsQ to its start state.
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*
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* @param p_hwfn
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*/
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void qed_consq_setup(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_consq_free - deallocates the given ConsQ struct.
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*
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* @param p_hwfn
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*/
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void qed_consq_free(struct qed_hwfn *p_hwfn);
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int qed_spq_pend_post(struct qed_hwfn *p_hwfn);
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/**
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* @file
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*
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* @brief Slow-hwfn low-level commands (Ramrods) function definitions.
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*/
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#define QED_SP_EQ_COMPLETION 0x01
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#define QED_SP_CQE_COMPLETION 0x02
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struct qed_sp_init_data {
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u32 cid;
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u16 opaque_fid;
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/* Information regarding operation upon sending & completion */
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enum spq_mode comp_mode;
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struct qed_spq_comp_cb *p_comp_data;
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};
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/**
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* @brief Returns a SPQ entry to the pool / frees the entry if allocated.
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* Should be called on in error flows after initializing the SPQ entry
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* and before posting it.
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*
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* @param p_hwfn
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* @param p_ent
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*/
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void qed_sp_destroy_request(struct qed_hwfn *p_hwfn,
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struct qed_spq_entry *p_ent);
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int qed_sp_init_request(struct qed_hwfn *p_hwfn,
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struct qed_spq_entry **pp_ent,
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u8 cmd,
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u8 protocol,
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struct qed_sp_init_data *p_data);
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/**
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* @brief qed_sp_pf_start - PF Function Start Ramrod
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*
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* This ramrod is sent to initialize a physical function (PF). It will
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* configure the function related parameters and write its completion to the
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* event ring specified in the parameters.
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*
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* Ramrods complete on the common event ring for the PF. This ring is
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* allocated by the driver on host memory and its parameters are written
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* to the internal RAM of the UStorm by the Function Start Ramrod.
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*
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* @param p_hwfn
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* @param p_ptt
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* @param p_tunn
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* @param allow_npar_tx_switch
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*
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* @return int
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*/
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int qed_sp_pf_start(struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt,
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struct qed_tunnel_info *p_tunn,
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bool allow_npar_tx_switch);
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/**
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* @brief qed_sp_pf_update - PF Function Update Ramrod
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*
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* This ramrod updates function-related parameters. Every parameter can be
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* updated independently, according to configuration flags.
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*
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* @param p_hwfn
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*
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* @return int
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*/
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int qed_sp_pf_update(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_sp_pf_update_stag - Update firmware of new outer tag
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*
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* @param p_hwfn
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*
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* @return int
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*/
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int qed_sp_pf_update_stag(struct qed_hwfn *p_hwfn);
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/**
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* @brief qed_sp_pf_stop - PF Function Stop Ramrod
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*
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* This ramrod is sent to close a Physical Function (PF). It is the last ramrod
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* sent and the last completion written to the PFs Event Ring. This ramrod also
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* deletes the context for the Slowhwfn connection on this PF.
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*
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* @note Not required for first packet.
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*
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* @param p_hwfn
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*
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* @return int
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*/
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/**
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* @brief qed_sp_pf_update_ufp - PF ufp update Ramrod
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*
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* @param p_hwfn
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*
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* @return int
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*/
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int qed_sp_pf_update_ufp(struct qed_hwfn *p_hwfn);
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int qed_sp_pf_stop(struct qed_hwfn *p_hwfn);
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int qed_sp_pf_update_tunn_cfg(struct qed_hwfn *p_hwfn,
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struct qed_ptt *p_ptt,
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struct qed_tunnel_info *p_tunn,
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enum spq_mode comp_mode,
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struct qed_spq_comp_cb *p_comp_data);
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/**
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* @brief qed_sp_heartbeat_ramrod - Send empty Ramrod
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*
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* @param p_hwfn
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*
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* @return int
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*/
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int qed_sp_heartbeat_ramrod(struct qed_hwfn *p_hwfn);
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#endif
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