// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
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/* QLogic qed NIC Driver
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* Copyright (c) 2015-2017 QLogic Corporation
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* Copyright (c) 2019-2020 Marvell International Ltd.
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*/
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#include <linux/types.h>
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#include <asm/byteorder.h>
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#include <asm/param.h>
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#include <linux/delay.h>
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#include <linux/dma-mapping.h>
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#include <linux/etherdevice.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/log2.h>
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#include <linux/module.h>
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#include <linux/pci.h>
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#include <linux/slab.h>
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#include <linux/stddef.h>
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#include <linux/string.h>
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#include <linux/workqueue.h>
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#include <linux/errno.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/qed/qed_iscsi_if.h>
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#include "qed.h"
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#include "qed_cxt.h"
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#include "qed_dev_api.h"
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#include "qed_hsi.h"
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#include "qed_hw.h"
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#include "qed_int.h"
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#include "qed_iscsi.h"
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#include "qed_ll2.h"
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#include "qed_mcp.h"
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#include "qed_sp.h"
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#include "qed_sriov.h"
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#include "qed_reg_addr.h"
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struct qed_iscsi_conn {
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struct list_head list_entry;
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bool free_on_delete;
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u16 conn_id;
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u32 icid;
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u32 fw_cid;
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u8 layer_code;
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u8 offl_flags;
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u8 connect_mode;
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u32 initial_ack;
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dma_addr_t sq_pbl_addr;
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struct qed_chain r2tq;
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struct qed_chain xhq;
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struct qed_chain uhq;
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struct tcp_upload_params *tcp_upload_params_virt_addr;
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dma_addr_t tcp_upload_params_phys_addr;
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struct scsi_terminate_extra_params *queue_cnts_virt_addr;
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dma_addr_t queue_cnts_phys_addr;
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dma_addr_t syn_phy_addr;
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u16 syn_ip_payload_length;
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u8 local_mac[6];
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u8 remote_mac[6];
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u16 vlan_id;
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u16 tcp_flags;
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u8 ip_version;
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u32 remote_ip[4];
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u32 local_ip[4];
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u8 ka_max_probe_cnt;
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u8 dup_ack_theshold;
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u32 rcv_next;
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u32 snd_una;
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u32 snd_next;
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u32 snd_max;
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u32 snd_wnd;
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u32 rcv_wnd;
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u32 snd_wl1;
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u32 cwnd;
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u32 ss_thresh;
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u16 srtt;
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u16 rtt_var;
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u32 ts_recent;
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u32 ts_recent_age;
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u32 total_rt;
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u32 ka_timeout_delta;
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u32 rt_timeout_delta;
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u8 dup_ack_cnt;
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u8 snd_wnd_probe_cnt;
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u8 ka_probe_cnt;
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u8 rt_cnt;
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u32 flow_label;
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u32 ka_timeout;
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u32 ka_interval;
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u32 max_rt_time;
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u32 initial_rcv_wnd;
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u8 ttl;
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u8 tos_or_tc;
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u16 remote_port;
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u16 local_port;
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u16 mss;
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u8 snd_wnd_scale;
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u8 rcv_wnd_scale;
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u16 da_timeout_value;
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u8 ack_frequency;
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u8 update_flag;
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u8 default_cq;
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u32 max_seq_size;
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u32 max_recv_pdu_length;
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u32 max_send_pdu_length;
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u32 first_seq_length;
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u32 exp_stat_sn;
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u32 stat_sn;
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u16 physical_q0;
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u16 physical_q1;
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u8 abortive_dsconnect;
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};
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static int qed_iscsi_async_event(struct qed_hwfn *p_hwfn, u8 fw_event_code,
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__le16 echo, union event_ring_data *data,
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u8 fw_return_code)
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{
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if (p_hwfn->p_iscsi_info->event_cb) {
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struct qed_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
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return p_iscsi->event_cb(p_iscsi->event_context,
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fw_event_code, data);
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} else {
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DP_NOTICE(p_hwfn, "iSCSI async completion is not set\n");
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return -EINVAL;
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}
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}
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static int
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qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn,
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enum spq_mode comp_mode,
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struct qed_spq_comp_cb *p_comp_addr,
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void *event_context, iscsi_event_cb_t async_event_cb)
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{
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struct iscsi_init_ramrod_params *p_ramrod = NULL;
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struct scsi_init_func_queues *p_queue = NULL;
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struct qed_iscsi_pf_params *p_params = NULL;
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struct iscsi_spe_func_init *p_init = NULL;
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struct qed_spq_entry *p_ent = NULL;
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struct qed_sp_init_data init_data;
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int rc = 0;
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u32 dval;
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u16 val;
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u8 i;
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/* Get SPQ entry */
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memset(&init_data, 0, sizeof(init_data));
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init_data.cid = qed_spq_get_cid(p_hwfn);
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init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
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init_data.comp_mode = comp_mode;
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init_data.p_comp_data = p_comp_addr;
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rc = qed_sp_init_request(p_hwfn, &p_ent,
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ISCSI_RAMROD_CMD_ID_INIT_FUNC,
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PROTOCOLID_ISCSI, &init_data);
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if (rc)
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return rc;
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p_ramrod = &p_ent->ramrod.iscsi_init;
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p_init = &p_ramrod->iscsi_init_spe;
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p_params = &p_hwfn->pf_params.iscsi_pf_params;
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p_queue = &p_init->q_params;
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/* Sanity */
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if (p_params->num_queues > p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]) {
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DP_ERR(p_hwfn,
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"Cannot satisfy CQ amount. Queues requested %d, CQs available %d. Aborting function start\n",
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p_params->num_queues,
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p_hwfn->hw_info.feat_num[QED_ISCSI_CQ]);
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qed_sp_destroy_request(p_hwfn, p_ent);
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return -EINVAL;
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}
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val = p_params->half_way_close_timeout;
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p_init->half_way_close_timeout = cpu_to_le16(val);
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p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring;
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p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring;
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p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring;
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p_init->ll2_rx_queue_id =
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p_hwfn->hw_info.resc_start[QED_LL2_RAM_QUEUE] +
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p_params->ll2_ooo_queue_id;
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p_init->func_params.log_page_size = p_params->log_page_size;
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val = p_params->num_tasks;
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p_init->func_params.num_tasks = cpu_to_le16(val);
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p_init->debug_mode.flags = p_params->debug_mode;
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DMA_REGPAIR_LE(p_queue->glbl_q_params_addr,
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p_params->glbl_q_params_addr);
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val = p_params->cq_num_entries;
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p_queue->cq_num_entries = cpu_to_le16(val);
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val = p_params->cmdq_num_entries;
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p_queue->cmdq_num_entries = cpu_to_le16(val);
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p_queue->num_queues = p_params->num_queues;
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dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS];
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p_queue->queue_relative_offset = (u8)dval;
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p_queue->cq_sb_pi = p_params->gl_rq_pi;
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p_queue->cmdq_sb_pi = p_params->gl_cmd_pi;
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for (i = 0; i < p_params->num_queues; i++) {
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val = qed_get_igu_sb_id(p_hwfn, i);
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p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val);
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}
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p_queue->bdq_resource_id = (u8)RESC_START(p_hwfn, QED_BDQ);
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DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ],
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p_params->bdq_pbl_base_addr[BDQ_ID_RQ]);
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p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] =
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p_params->bdq_pbl_num_entries[BDQ_ID_RQ];
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val = p_params->bdq_xoff_threshold[BDQ_ID_RQ];
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p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
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val = p_params->bdq_xon_threshold[BDQ_ID_RQ];
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p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val);
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DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA],
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p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]);
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p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] =
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p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA];
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val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA];
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p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
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val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA];
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p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val);
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val = p_params->rq_buffer_size;
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p_queue->rq_buffer_size = cpu_to_le16(val);
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if (p_params->is_target) {
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SET_FIELD(p_queue->q_validity,
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SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
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if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA])
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SET_FIELD(p_queue->q_validity,
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SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1);
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SET_FIELD(p_queue->q_validity,
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SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1);
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} else {
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SET_FIELD(p_queue->q_validity,
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SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1);
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}
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p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer);
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val = p_params->tx_sws_timer;
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p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val);
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p_ramrod->tcp_init.max_fin_rt = p_params->max_fin_rt;
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p_hwfn->p_iscsi_info->event_context = event_context;
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p_hwfn->p_iscsi_info->event_cb = async_event_cb;
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qed_spq_register_async_cb(p_hwfn, PROTOCOLID_ISCSI,
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qed_iscsi_async_event);
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return qed_spq_post(p_hwfn, p_ent, NULL);
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}
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static int qed_sp_iscsi_conn_offload(struct qed_hwfn *p_hwfn,
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struct qed_iscsi_conn *p_conn,
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enum spq_mode comp_mode,
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struct qed_spq_comp_cb *p_comp_addr)
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{
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struct iscsi_spe_conn_offload *p_ramrod = NULL;
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struct tcp_offload_params_opt2 *p_tcp2 = NULL;
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struct tcp_offload_params *p_tcp = NULL;
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struct qed_spq_entry *p_ent = NULL;
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struct qed_sp_init_data init_data;
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dma_addr_t r2tq_pbl_addr;
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dma_addr_t xhq_pbl_addr;
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dma_addr_t uhq_pbl_addr;
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u16 physical_q;
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__le16 tmp;
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int rc = 0;
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u32 dval;
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u16 wval;
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u16 *p;
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u8 i;
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/* Get SPQ entry */
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memset(&init_data, 0, sizeof(init_data));
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init_data.cid = p_conn->icid;
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init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
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init_data.comp_mode = comp_mode;
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init_data.p_comp_data = p_comp_addr;
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rc = qed_sp_init_request(p_hwfn, &p_ent,
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ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN,
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PROTOCOLID_ISCSI, &init_data);
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if (rc)
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return rc;
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p_ramrod = &p_ent->ramrod.iscsi_conn_offload;
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/* Transmission PQ is the first of the PF */
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physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_OFLD);
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p_conn->physical_q0 = physical_q;
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p_ramrod->iscsi.physical_q0 = cpu_to_le16(physical_q);
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/* iSCSI Pure-ACK PQ */
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physical_q = qed_get_cm_pq_idx(p_hwfn, PQ_FLAGS_ACK);
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p_conn->physical_q1 = physical_q;
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p_ramrod->iscsi.physical_q1 = cpu_to_le16(physical_q);
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p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
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DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr);
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r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq);
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DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr);
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xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq);
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DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr);
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uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq);
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DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr);
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p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack);
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p_ramrod->iscsi.flags = p_conn->offl_flags;
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p_ramrod->iscsi.default_cq = p_conn->default_cq;
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p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn);
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if (!GET_FIELD(p_ramrod->iscsi.flags,
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ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) {
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p_tcp = &p_ramrod->tcp;
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p = (u16 *)p_conn->local_mac;
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tmp = cpu_to_le16(get_unaligned_be16(p));
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p_tcp->local_mac_addr_hi = tmp;
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tmp = cpu_to_le16(get_unaligned_be16(p + 1));
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p_tcp->local_mac_addr_mid = tmp;
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tmp = cpu_to_le16(get_unaligned_be16(p + 2));
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p_tcp->local_mac_addr_lo = tmp;
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p = (u16 *)p_conn->remote_mac;
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tmp = cpu_to_le16(get_unaligned_be16(p));
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p_tcp->remote_mac_addr_hi = tmp;
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tmp = cpu_to_le16(get_unaligned_be16(p + 1));
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p_tcp->remote_mac_addr_mid = tmp;
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tmp = cpu_to_le16(get_unaligned_be16(p + 2));
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p_tcp->remote_mac_addr_lo = tmp;
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p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id);
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p_tcp->flags = cpu_to_le16(p_conn->tcp_flags);
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p_tcp->ip_version = p_conn->ip_version;
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for (i = 0; i < 4; i++) {
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dval = p_conn->remote_ip[i];
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p_tcp->remote_ip[i] = cpu_to_le32(dval);
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dval = p_conn->local_ip[i];
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p_tcp->local_ip[i] = cpu_to_le32(dval);
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}
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p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt;
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p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold;
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p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next);
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p_tcp->snd_una = cpu_to_le32(p_conn->snd_una);
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p_tcp->snd_next = cpu_to_le32(p_conn->snd_next);
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p_tcp->snd_max = cpu_to_le32(p_conn->snd_max);
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p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd);
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p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd);
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p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1);
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p_tcp->cwnd = cpu_to_le32(p_conn->cwnd);
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p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh);
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p_tcp->srtt = cpu_to_le16(p_conn->srtt);
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p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var);
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p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent);
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p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age);
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p_tcp->total_rt = cpu_to_le32(p_conn->total_rt);
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dval = p_conn->ka_timeout_delta;
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p_tcp->ka_timeout_delta = cpu_to_le32(dval);
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dval = p_conn->rt_timeout_delta;
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p_tcp->rt_timeout_delta = cpu_to_le32(dval);
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p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt;
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p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt;
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p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt;
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p_tcp->rt_cnt = p_conn->rt_cnt;
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p_tcp->flow_label = cpu_to_le32(p_conn->flow_label);
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p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
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p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval);
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p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
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dval = p_conn->initial_rcv_wnd;
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p_tcp->initial_rcv_wnd = cpu_to_le32(dval);
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p_tcp->ttl = p_conn->ttl;
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p_tcp->tos_or_tc = p_conn->tos_or_tc;
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p_tcp->remote_port = cpu_to_le16(p_conn->remote_port);
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p_tcp->local_port = cpu_to_le16(p_conn->local_port);
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p_tcp->mss = cpu_to_le16(p_conn->mss);
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p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale;
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p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale;
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wval = p_conn->da_timeout_value;
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p_tcp->da_timeout_value = cpu_to_le16(wval);
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p_tcp->ack_frequency = p_conn->ack_frequency;
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p_tcp->connect_mode = p_conn->connect_mode;
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} else {
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p_tcp2 =
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&((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp;
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p = (u16 *)p_conn->local_mac;
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tmp = cpu_to_le16(get_unaligned_be16(p));
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p_tcp2->local_mac_addr_hi = tmp;
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tmp = cpu_to_le16(get_unaligned_be16(p + 1));
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p_tcp2->local_mac_addr_mid = tmp;
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tmp = cpu_to_le16(get_unaligned_be16(p + 2));
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p_tcp2->local_mac_addr_lo = tmp;
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p = (u16 *)p_conn->remote_mac;
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tmp = cpu_to_le16(get_unaligned_be16(p));
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p_tcp2->remote_mac_addr_hi = tmp;
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tmp = cpu_to_le16(get_unaligned_be16(p + 1));
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p_tcp2->remote_mac_addr_mid = tmp;
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tmp = cpu_to_le16(get_unaligned_be16(p + 2));
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p_tcp2->remote_mac_addr_lo = tmp;
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p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id);
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p_tcp2->flags = cpu_to_le16(p_conn->tcp_flags);
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p_tcp2->ip_version = p_conn->ip_version;
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for (i = 0; i < 4; i++) {
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dval = p_conn->remote_ip[i];
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p_tcp2->remote_ip[i] = cpu_to_le32(dval);
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dval = p_conn->local_ip[i];
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p_tcp2->local_ip[i] = cpu_to_le32(dval);
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}
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p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label);
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p_tcp2->ttl = p_conn->ttl;
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p_tcp2->tos_or_tc = p_conn->tos_or_tc;
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p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port);
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p_tcp2->local_port = cpu_to_le16(p_conn->local_port);
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p_tcp2->mss = cpu_to_le16(p_conn->mss);
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p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale;
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p_tcp2->connect_mode = p_conn->connect_mode;
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wval = p_conn->syn_ip_payload_length;
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p_tcp2->syn_ip_payload_length = cpu_to_le16(wval);
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p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr);
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p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr);
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p_tcp2->cwnd = cpu_to_le32(p_conn->cwnd);
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p_tcp2->ka_max_probe_cnt = p_conn->ka_probe_cnt;
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p_tcp2->ka_timeout = cpu_to_le32(p_conn->ka_timeout);
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p_tcp2->max_rt_time = cpu_to_le32(p_conn->max_rt_time);
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p_tcp2->ka_interval = cpu_to_le32(p_conn->ka_interval);
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}
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return qed_spq_post(p_hwfn, p_ent, NULL);
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}
|
|
static int qed_sp_iscsi_conn_update(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_conn *p_conn,
|
enum spq_mode comp_mode,
|
struct qed_spq_comp_cb *p_comp_addr)
|
{
|
struct iscsi_conn_update_ramrod_params *p_ramrod = NULL;
|
struct qed_spq_entry *p_ent = NULL;
|
struct qed_sp_init_data init_data;
|
int rc = -EINVAL;
|
u32 dval;
|
|
/* Get SPQ entry */
|
memset(&init_data, 0, sizeof(init_data));
|
init_data.cid = p_conn->icid;
|
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
|
init_data.comp_mode = comp_mode;
|
init_data.p_comp_data = p_comp_addr;
|
|
rc = qed_sp_init_request(p_hwfn, &p_ent,
|
ISCSI_RAMROD_CMD_ID_UPDATE_CONN,
|
PROTOCOLID_ISCSI, &init_data);
|
if (rc)
|
return rc;
|
|
p_ramrod = &p_ent->ramrod.iscsi_conn_update;
|
|
p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
|
p_ramrod->flags = p_conn->update_flag;
|
p_ramrod->max_seq_size = cpu_to_le32(p_conn->max_seq_size);
|
dval = p_conn->max_recv_pdu_length;
|
p_ramrod->max_recv_pdu_length = cpu_to_le32(dval);
|
dval = p_conn->max_send_pdu_length;
|
p_ramrod->max_send_pdu_length = cpu_to_le32(dval);
|
dval = p_conn->first_seq_length;
|
p_ramrod->first_seq_length = cpu_to_le32(dval);
|
p_ramrod->exp_stat_sn = cpu_to_le32(p_conn->exp_stat_sn);
|
|
return qed_spq_post(p_hwfn, p_ent, NULL);
|
}
|
|
static int
|
qed_sp_iscsi_mac_update(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_conn *p_conn,
|
enum spq_mode comp_mode,
|
struct qed_spq_comp_cb *p_comp_addr)
|
{
|
struct iscsi_spe_conn_mac_update *p_ramrod = NULL;
|
struct qed_spq_entry *p_ent = NULL;
|
struct qed_sp_init_data init_data;
|
int rc = -EINVAL;
|
u8 ucval;
|
|
/* Get SPQ entry */
|
memset(&init_data, 0, sizeof(init_data));
|
init_data.cid = p_conn->icid;
|
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
|
init_data.comp_mode = comp_mode;
|
init_data.p_comp_data = p_comp_addr;
|
|
rc = qed_sp_init_request(p_hwfn, &p_ent,
|
ISCSI_RAMROD_CMD_ID_MAC_UPDATE,
|
PROTOCOLID_ISCSI, &init_data);
|
if (rc)
|
return rc;
|
|
p_ramrod = &p_ent->ramrod.iscsi_conn_mac_update;
|
|
p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
|
ucval = p_conn->remote_mac[1];
|
((u8 *)(&p_ramrod->remote_mac_addr_hi))[0] = ucval;
|
ucval = p_conn->remote_mac[0];
|
((u8 *)(&p_ramrod->remote_mac_addr_hi))[1] = ucval;
|
ucval = p_conn->remote_mac[3];
|
((u8 *)(&p_ramrod->remote_mac_addr_mid))[0] = ucval;
|
ucval = p_conn->remote_mac[2];
|
((u8 *)(&p_ramrod->remote_mac_addr_mid))[1] = ucval;
|
ucval = p_conn->remote_mac[5];
|
((u8 *)(&p_ramrod->remote_mac_addr_lo))[0] = ucval;
|
ucval = p_conn->remote_mac[4];
|
((u8 *)(&p_ramrod->remote_mac_addr_lo))[1] = ucval;
|
|
return qed_spq_post(p_hwfn, p_ent, NULL);
|
}
|
|
static int qed_sp_iscsi_conn_terminate(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_conn *p_conn,
|
enum spq_mode comp_mode,
|
struct qed_spq_comp_cb *p_comp_addr)
|
{
|
struct iscsi_spe_conn_termination *p_ramrod = NULL;
|
struct qed_spq_entry *p_ent = NULL;
|
struct qed_sp_init_data init_data;
|
int rc = -EINVAL;
|
|
/* Get SPQ entry */
|
memset(&init_data, 0, sizeof(init_data));
|
init_data.cid = p_conn->icid;
|
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
|
init_data.comp_mode = comp_mode;
|
init_data.p_comp_data = p_comp_addr;
|
|
rc = qed_sp_init_request(p_hwfn, &p_ent,
|
ISCSI_RAMROD_CMD_ID_TERMINATION_CONN,
|
PROTOCOLID_ISCSI, &init_data);
|
if (rc)
|
return rc;
|
|
p_ramrod = &p_ent->ramrod.iscsi_conn_terminate;
|
|
p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id);
|
p_ramrod->abortive = p_conn->abortive_dsconnect;
|
|
DMA_REGPAIR_LE(p_ramrod->query_params_addr,
|
p_conn->tcp_upload_params_phys_addr);
|
DMA_REGPAIR_LE(p_ramrod->queue_cnts_addr, p_conn->queue_cnts_phys_addr);
|
|
return qed_spq_post(p_hwfn, p_ent, NULL);
|
}
|
|
static int qed_sp_iscsi_conn_clear_sq(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_conn *p_conn,
|
enum spq_mode comp_mode,
|
struct qed_spq_comp_cb *p_comp_addr)
|
{
|
struct qed_spq_entry *p_ent = NULL;
|
struct qed_sp_init_data init_data;
|
int rc = -EINVAL;
|
|
/* Get SPQ entry */
|
memset(&init_data, 0, sizeof(init_data));
|
init_data.cid = p_conn->icid;
|
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
|
init_data.comp_mode = comp_mode;
|
init_data.p_comp_data = p_comp_addr;
|
|
rc = qed_sp_init_request(p_hwfn, &p_ent,
|
ISCSI_RAMROD_CMD_ID_CLEAR_SQ,
|
PROTOCOLID_ISCSI, &init_data);
|
if (rc)
|
return rc;
|
|
return qed_spq_post(p_hwfn, p_ent, NULL);
|
}
|
|
static int qed_sp_iscsi_func_stop(struct qed_hwfn *p_hwfn,
|
enum spq_mode comp_mode,
|
struct qed_spq_comp_cb *p_comp_addr)
|
{
|
struct qed_spq_entry *p_ent = NULL;
|
struct qed_sp_init_data init_data;
|
int rc = 0;
|
|
/* Get SPQ entry */
|
memset(&init_data, 0, sizeof(init_data));
|
init_data.cid = qed_spq_get_cid(p_hwfn);
|
init_data.opaque_fid = p_hwfn->hw_info.opaque_fid;
|
init_data.comp_mode = comp_mode;
|
init_data.p_comp_data = p_comp_addr;
|
|
rc = qed_sp_init_request(p_hwfn, &p_ent,
|
ISCSI_RAMROD_CMD_ID_DESTROY_FUNC,
|
PROTOCOLID_ISCSI, &init_data);
|
if (rc)
|
return rc;
|
|
rc = qed_spq_post(p_hwfn, p_ent, NULL);
|
|
qed_spq_unregister_async_cb(p_hwfn, PROTOCOLID_ISCSI);
|
return rc;
|
}
|
|
static void __iomem *qed_iscsi_get_db_addr(struct qed_hwfn *p_hwfn, u32 cid)
|
{
|
return (u8 __iomem *)p_hwfn->doorbells +
|
qed_db_addr(cid, DQ_DEMS_LEGACY);
|
}
|
|
static void __iomem *qed_iscsi_get_primary_bdq_prod(struct qed_hwfn *p_hwfn,
|
u8 bdq_id)
|
{
|
if (RESC_NUM(p_hwfn, QED_BDQ)) {
|
return (u8 __iomem *)p_hwfn->regview +
|
GTT_BAR0_MAP_REG_MSDM_RAM +
|
MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
|
QED_BDQ),
|
bdq_id);
|
} else {
|
DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
|
return NULL;
|
}
|
}
|
|
static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn,
|
u8 bdq_id)
|
{
|
if (RESC_NUM(p_hwfn, QED_BDQ)) {
|
return (u8 __iomem *)p_hwfn->regview +
|
GTT_BAR0_MAP_REG_TSDM_RAM +
|
TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(RESC_START(p_hwfn,
|
QED_BDQ),
|
bdq_id);
|
} else {
|
DP_NOTICE(p_hwfn, "BDQ is not allocated!\n");
|
return NULL;
|
}
|
}
|
|
static int qed_iscsi_setup_connection(struct qed_iscsi_conn *p_conn)
|
{
|
if (!p_conn->queue_cnts_virt_addr)
|
goto nomem;
|
memset(p_conn->queue_cnts_virt_addr, 0,
|
sizeof(*p_conn->queue_cnts_virt_addr));
|
|
if (!p_conn->tcp_upload_params_virt_addr)
|
goto nomem;
|
memset(p_conn->tcp_upload_params_virt_addr, 0,
|
sizeof(*p_conn->tcp_upload_params_virt_addr));
|
|
if (!p_conn->r2tq.p_virt_addr)
|
goto nomem;
|
qed_chain_pbl_zero_mem(&p_conn->r2tq);
|
|
if (!p_conn->uhq.p_virt_addr)
|
goto nomem;
|
qed_chain_pbl_zero_mem(&p_conn->uhq);
|
|
if (!p_conn->xhq.p_virt_addr)
|
goto nomem;
|
qed_chain_pbl_zero_mem(&p_conn->xhq);
|
|
return 0;
|
nomem:
|
return -ENOMEM;
|
}
|
|
static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_conn **p_out_conn)
|
{
|
struct scsi_terminate_extra_params *p_q_cnts = NULL;
|
struct qed_iscsi_pf_params *p_params = NULL;
|
struct qed_chain_init_params params = {
|
.mode = QED_CHAIN_MODE_PBL,
|
.intended_use = QED_CHAIN_USE_TO_CONSUME_PRODUCE,
|
.cnt_type = QED_CHAIN_CNT_TYPE_U16,
|
};
|
struct tcp_upload_params *p_tcp = NULL;
|
struct qed_iscsi_conn *p_conn = NULL;
|
int rc = 0;
|
|
/* Try finding a free connection that can be used */
|
spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
|
if (!list_empty(&p_hwfn->p_iscsi_info->free_list))
|
p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
|
struct qed_iscsi_conn, list_entry);
|
if (p_conn) {
|
list_del(&p_conn->list_entry);
|
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
|
*p_out_conn = p_conn;
|
return 0;
|
}
|
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
|
|
/* Need to allocate a new connection */
|
p_params = &p_hwfn->pf_params.iscsi_pf_params;
|
|
p_conn = kzalloc(sizeof(*p_conn), GFP_KERNEL);
|
if (!p_conn)
|
return -ENOMEM;
|
|
p_q_cnts = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
|
sizeof(*p_q_cnts),
|
&p_conn->queue_cnts_phys_addr,
|
GFP_KERNEL);
|
if (!p_q_cnts)
|
goto nomem_queue_cnts_param;
|
p_conn->queue_cnts_virt_addr = p_q_cnts;
|
|
p_tcp = dma_alloc_coherent(&p_hwfn->cdev->pdev->dev,
|
sizeof(*p_tcp),
|
&p_conn->tcp_upload_params_phys_addr,
|
GFP_KERNEL);
|
if (!p_tcp)
|
goto nomem_upload_param;
|
p_conn->tcp_upload_params_virt_addr = p_tcp;
|
|
params.num_elems = p_params->num_r2tq_pages_in_ring *
|
QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_wqe);
|
params.elem_size = sizeof(struct iscsi_wqe);
|
|
rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->r2tq, ¶ms);
|
if (rc)
|
goto nomem_r2tq;
|
|
params.num_elems = p_params->num_uhq_pages_in_ring *
|
QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe);
|
params.elem_size = sizeof(struct iscsi_uhqe);
|
|
rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->uhq, ¶ms);
|
if (rc)
|
goto nomem_uhq;
|
|
params.elem_size = sizeof(struct iscsi_xhqe);
|
|
rc = qed_chain_alloc(p_hwfn->cdev, &p_conn->xhq, ¶ms);
|
if (rc)
|
goto nomem;
|
|
p_conn->free_on_delete = true;
|
*p_out_conn = p_conn;
|
return 0;
|
|
nomem:
|
qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
|
nomem_uhq:
|
qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
|
nomem_r2tq:
|
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
|
sizeof(struct tcp_upload_params),
|
p_conn->tcp_upload_params_virt_addr,
|
p_conn->tcp_upload_params_phys_addr);
|
nomem_upload_param:
|
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
|
sizeof(struct scsi_terminate_extra_params),
|
p_conn->queue_cnts_virt_addr,
|
p_conn->queue_cnts_phys_addr);
|
nomem_queue_cnts_param:
|
kfree(p_conn);
|
|
return -ENOMEM;
|
}
|
|
static int qed_iscsi_acquire_connection(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_conn *p_in_conn,
|
struct qed_iscsi_conn **p_out_conn)
|
{
|
struct qed_iscsi_conn *p_conn = NULL;
|
int rc = 0;
|
u32 icid;
|
|
spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
|
rc = qed_cxt_acquire_cid(p_hwfn, PROTOCOLID_ISCSI, &icid);
|
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
|
if (rc)
|
return rc;
|
|
/* Use input connection or allocate a new one */
|
if (p_in_conn)
|
p_conn = p_in_conn;
|
else
|
rc = qed_iscsi_allocate_connection(p_hwfn, &p_conn);
|
|
if (!rc)
|
rc = qed_iscsi_setup_connection(p_conn);
|
|
if (rc) {
|
spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
|
qed_cxt_release_cid(p_hwfn, icid);
|
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
|
return rc;
|
}
|
|
p_conn->icid = icid;
|
p_conn->conn_id = (u16)icid;
|
p_conn->fw_cid = (p_hwfn->hw_info.opaque_fid << 16) | icid;
|
|
*p_out_conn = p_conn;
|
|
return rc;
|
}
|
|
static void qed_iscsi_release_connection(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_conn *p_conn)
|
{
|
spin_lock_bh(&p_hwfn->p_iscsi_info->lock);
|
list_add_tail(&p_conn->list_entry, &p_hwfn->p_iscsi_info->free_list);
|
qed_cxt_release_cid(p_hwfn, p_conn->icid);
|
spin_unlock_bh(&p_hwfn->p_iscsi_info->lock);
|
}
|
|
static void qed_iscsi_free_connection(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_conn *p_conn)
|
{
|
qed_chain_free(p_hwfn->cdev, &p_conn->xhq);
|
qed_chain_free(p_hwfn->cdev, &p_conn->uhq);
|
qed_chain_free(p_hwfn->cdev, &p_conn->r2tq);
|
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
|
sizeof(struct tcp_upload_params),
|
p_conn->tcp_upload_params_virt_addr,
|
p_conn->tcp_upload_params_phys_addr);
|
dma_free_coherent(&p_hwfn->cdev->pdev->dev,
|
sizeof(struct scsi_terminate_extra_params),
|
p_conn->queue_cnts_virt_addr,
|
p_conn->queue_cnts_phys_addr);
|
kfree(p_conn);
|
}
|
|
int qed_iscsi_alloc(struct qed_hwfn *p_hwfn)
|
{
|
struct qed_iscsi_info *p_iscsi_info;
|
|
p_iscsi_info = kzalloc(sizeof(*p_iscsi_info), GFP_KERNEL);
|
if (!p_iscsi_info)
|
return -ENOMEM;
|
|
INIT_LIST_HEAD(&p_iscsi_info->free_list);
|
|
p_hwfn->p_iscsi_info = p_iscsi_info;
|
return 0;
|
}
|
|
void qed_iscsi_setup(struct qed_hwfn *p_hwfn)
|
{
|
spin_lock_init(&p_hwfn->p_iscsi_info->lock);
|
}
|
|
void qed_iscsi_free(struct qed_hwfn *p_hwfn)
|
{
|
struct qed_iscsi_conn *p_conn = NULL;
|
|
if (!p_hwfn->p_iscsi_info)
|
return;
|
|
while (!list_empty(&p_hwfn->p_iscsi_info->free_list)) {
|
p_conn = list_first_entry(&p_hwfn->p_iscsi_info->free_list,
|
struct qed_iscsi_conn, list_entry);
|
if (p_conn) {
|
list_del(&p_conn->list_entry);
|
qed_iscsi_free_connection(p_hwfn, p_conn);
|
}
|
}
|
|
kfree(p_hwfn->p_iscsi_info);
|
p_hwfn->p_iscsi_info = NULL;
|
}
|
|
static void _qed_iscsi_get_tstats(struct qed_hwfn *p_hwfn,
|
struct qed_ptt *p_ptt,
|
struct qed_iscsi_stats *p_stats)
|
{
|
struct tstorm_iscsi_stats_drv tstats;
|
u32 tstats_addr;
|
|
memset(&tstats, 0, sizeof(tstats));
|
tstats_addr = BAR0_MAP_REG_TSDM_RAM +
|
TSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
|
qed_memcpy_from(p_hwfn, p_ptt, &tstats, tstats_addr, sizeof(tstats));
|
|
p_stats->iscsi_rx_bytes_cnt =
|
HILO_64_REGPAIR(tstats.iscsi_rx_bytes_cnt);
|
p_stats->iscsi_rx_packet_cnt =
|
HILO_64_REGPAIR(tstats.iscsi_rx_packet_cnt);
|
p_stats->iscsi_rx_new_ooo_isle_events_cnt =
|
HILO_64_REGPAIR(tstats.iscsi_rx_new_ooo_isle_events_cnt);
|
p_stats->iscsi_cmdq_threshold_cnt =
|
le32_to_cpu(tstats.iscsi_cmdq_threshold_cnt);
|
p_stats->iscsi_rq_threshold_cnt =
|
le32_to_cpu(tstats.iscsi_rq_threshold_cnt);
|
p_stats->iscsi_immq_threshold_cnt =
|
le32_to_cpu(tstats.iscsi_immq_threshold_cnt);
|
}
|
|
static void _qed_iscsi_get_mstats(struct qed_hwfn *p_hwfn,
|
struct qed_ptt *p_ptt,
|
struct qed_iscsi_stats *p_stats)
|
{
|
struct mstorm_iscsi_stats_drv mstats;
|
u32 mstats_addr;
|
|
memset(&mstats, 0, sizeof(mstats));
|
mstats_addr = BAR0_MAP_REG_MSDM_RAM +
|
MSTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
|
qed_memcpy_from(p_hwfn, p_ptt, &mstats, mstats_addr, sizeof(mstats));
|
|
p_stats->iscsi_rx_dropped_pdus_task_not_valid =
|
HILO_64_REGPAIR(mstats.iscsi_rx_dropped_pdus_task_not_valid);
|
}
|
|
static void _qed_iscsi_get_ustats(struct qed_hwfn *p_hwfn,
|
struct qed_ptt *p_ptt,
|
struct qed_iscsi_stats *p_stats)
|
{
|
struct ustorm_iscsi_stats_drv ustats;
|
u32 ustats_addr;
|
|
memset(&ustats, 0, sizeof(ustats));
|
ustats_addr = BAR0_MAP_REG_USDM_RAM +
|
USTORM_ISCSI_RX_STATS_OFFSET(p_hwfn->rel_pf_id);
|
qed_memcpy_from(p_hwfn, p_ptt, &ustats, ustats_addr, sizeof(ustats));
|
|
p_stats->iscsi_rx_data_pdu_cnt =
|
HILO_64_REGPAIR(ustats.iscsi_rx_data_pdu_cnt);
|
p_stats->iscsi_rx_r2t_pdu_cnt =
|
HILO_64_REGPAIR(ustats.iscsi_rx_r2t_pdu_cnt);
|
p_stats->iscsi_rx_total_pdu_cnt =
|
HILO_64_REGPAIR(ustats.iscsi_rx_total_pdu_cnt);
|
}
|
|
static void _qed_iscsi_get_xstats(struct qed_hwfn *p_hwfn,
|
struct qed_ptt *p_ptt,
|
struct qed_iscsi_stats *p_stats)
|
{
|
struct xstorm_iscsi_stats_drv xstats;
|
u32 xstats_addr;
|
|
memset(&xstats, 0, sizeof(xstats));
|
xstats_addr = BAR0_MAP_REG_XSDM_RAM +
|
XSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
|
qed_memcpy_from(p_hwfn, p_ptt, &xstats, xstats_addr, sizeof(xstats));
|
|
p_stats->iscsi_tx_go_to_slow_start_event_cnt =
|
HILO_64_REGPAIR(xstats.iscsi_tx_go_to_slow_start_event_cnt);
|
p_stats->iscsi_tx_fast_retransmit_event_cnt =
|
HILO_64_REGPAIR(xstats.iscsi_tx_fast_retransmit_event_cnt);
|
}
|
|
static void _qed_iscsi_get_ystats(struct qed_hwfn *p_hwfn,
|
struct qed_ptt *p_ptt,
|
struct qed_iscsi_stats *p_stats)
|
{
|
struct ystorm_iscsi_stats_drv ystats;
|
u32 ystats_addr;
|
|
memset(&ystats, 0, sizeof(ystats));
|
ystats_addr = BAR0_MAP_REG_YSDM_RAM +
|
YSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
|
qed_memcpy_from(p_hwfn, p_ptt, &ystats, ystats_addr, sizeof(ystats));
|
|
p_stats->iscsi_tx_data_pdu_cnt =
|
HILO_64_REGPAIR(ystats.iscsi_tx_data_pdu_cnt);
|
p_stats->iscsi_tx_r2t_pdu_cnt =
|
HILO_64_REGPAIR(ystats.iscsi_tx_r2t_pdu_cnt);
|
p_stats->iscsi_tx_total_pdu_cnt =
|
HILO_64_REGPAIR(ystats.iscsi_tx_total_pdu_cnt);
|
}
|
|
static void _qed_iscsi_get_pstats(struct qed_hwfn *p_hwfn,
|
struct qed_ptt *p_ptt,
|
struct qed_iscsi_stats *p_stats)
|
{
|
struct pstorm_iscsi_stats_drv pstats;
|
u32 pstats_addr;
|
|
memset(&pstats, 0, sizeof(pstats));
|
pstats_addr = BAR0_MAP_REG_PSDM_RAM +
|
PSTORM_ISCSI_TX_STATS_OFFSET(p_hwfn->rel_pf_id);
|
qed_memcpy_from(p_hwfn, p_ptt, &pstats, pstats_addr, sizeof(pstats));
|
|
p_stats->iscsi_tx_bytes_cnt =
|
HILO_64_REGPAIR(pstats.iscsi_tx_bytes_cnt);
|
p_stats->iscsi_tx_packet_cnt =
|
HILO_64_REGPAIR(pstats.iscsi_tx_packet_cnt);
|
}
|
|
static int qed_iscsi_get_stats(struct qed_hwfn *p_hwfn,
|
struct qed_iscsi_stats *stats)
|
{
|
struct qed_ptt *p_ptt;
|
|
memset(stats, 0, sizeof(*stats));
|
|
p_ptt = qed_ptt_acquire(p_hwfn);
|
if (!p_ptt) {
|
DP_ERR(p_hwfn, "Failed to acquire ptt\n");
|
return -EAGAIN;
|
}
|
|
_qed_iscsi_get_tstats(p_hwfn, p_ptt, stats);
|
_qed_iscsi_get_mstats(p_hwfn, p_ptt, stats);
|
_qed_iscsi_get_ustats(p_hwfn, p_ptt, stats);
|
|
_qed_iscsi_get_xstats(p_hwfn, p_ptt, stats);
|
_qed_iscsi_get_ystats(p_hwfn, p_ptt, stats);
|
_qed_iscsi_get_pstats(p_hwfn, p_ptt, stats);
|
|
qed_ptt_release(p_hwfn, p_ptt);
|
|
return 0;
|
}
|
|
struct qed_hash_iscsi_con {
|
struct hlist_node node;
|
struct qed_iscsi_conn *con;
|
};
|
|
static int qed_fill_iscsi_dev_info(struct qed_dev *cdev,
|
struct qed_dev_iscsi_info *info)
|
{
|
struct qed_hwfn *hwfn = QED_AFFIN_HWFN(cdev);
|
|
int rc;
|
|
memset(info, 0, sizeof(*info));
|
rc = qed_fill_dev_info(cdev, &info->common);
|
|
info->primary_dbq_rq_addr =
|
qed_iscsi_get_primary_bdq_prod(hwfn, BDQ_ID_RQ);
|
info->secondary_bdq_rq_addr =
|
qed_iscsi_get_secondary_bdq_prod(hwfn, BDQ_ID_RQ);
|
|
info->num_cqs = FEAT_NUM(hwfn, QED_ISCSI_CQ);
|
|
return rc;
|
}
|
|
static void qed_register_iscsi_ops(struct qed_dev *cdev,
|
struct qed_iscsi_cb_ops *ops, void *cookie)
|
{
|
cdev->protocol_ops.iscsi = ops;
|
cdev->ops_cookie = cookie;
|
}
|
|
static struct qed_hash_iscsi_con *qed_iscsi_get_hash(struct qed_dev *cdev,
|
u32 handle)
|
{
|
struct qed_hash_iscsi_con *hash_con = NULL;
|
|
if (!(cdev->flags & QED_FLAG_STORAGE_STARTED))
|
return NULL;
|
|
hash_for_each_possible(cdev->connections, hash_con, node, handle) {
|
if (hash_con->con->icid == handle)
|
break;
|
}
|
|
if (!hash_con || (hash_con->con->icid != handle))
|
return NULL;
|
|
return hash_con;
|
}
|
|
static int qed_iscsi_stop(struct qed_dev *cdev)
|
{
|
int rc;
|
|
if (!(cdev->flags & QED_FLAG_STORAGE_STARTED)) {
|
DP_NOTICE(cdev, "iscsi already stopped\n");
|
return 0;
|
}
|
|
if (!hash_empty(cdev->connections)) {
|
DP_NOTICE(cdev,
|
"Can't stop iscsi - not all connections were returned\n");
|
return -EINVAL;
|
}
|
|
/* Stop the iscsi */
|
rc = qed_sp_iscsi_func_stop(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
|
NULL);
|
cdev->flags &= ~QED_FLAG_STORAGE_STARTED;
|
|
return rc;
|
}
|
|
static int qed_iscsi_start(struct qed_dev *cdev,
|
struct qed_iscsi_tid *tasks,
|
void *event_context,
|
iscsi_event_cb_t async_event_cb)
|
{
|
int rc;
|
struct qed_tid_mem *tid_info;
|
|
if (cdev->flags & QED_FLAG_STORAGE_STARTED) {
|
DP_NOTICE(cdev, "iscsi already started;\n");
|
return 0;
|
}
|
|
rc = qed_sp_iscsi_func_start(QED_AFFIN_HWFN(cdev), QED_SPQ_MODE_EBLOCK,
|
NULL, event_context, async_event_cb);
|
if (rc) {
|
DP_NOTICE(cdev, "Failed to start iscsi\n");
|
return rc;
|
}
|
|
cdev->flags |= QED_FLAG_STORAGE_STARTED;
|
hash_init(cdev->connections);
|
|
if (!tasks)
|
return 0;
|
|
tid_info = kzalloc(sizeof(*tid_info), GFP_KERNEL);
|
|
if (!tid_info) {
|
qed_iscsi_stop(cdev);
|
return -ENOMEM;
|
}
|
|
rc = qed_cxt_get_tid_mem_info(QED_AFFIN_HWFN(cdev), tid_info);
|
if (rc) {
|
DP_NOTICE(cdev, "Failed to gather task information\n");
|
qed_iscsi_stop(cdev);
|
kfree(tid_info);
|
return rc;
|
}
|
|
/* Fill task information */
|
tasks->size = tid_info->tid_size;
|
tasks->num_tids_per_block = tid_info->num_tids_per_block;
|
memcpy(tasks->blocks, tid_info->blocks,
|
MAX_TID_BLOCKS_ISCSI * sizeof(u8 *));
|
|
kfree(tid_info);
|
|
return 0;
|
}
|
|
static int qed_iscsi_acquire_conn(struct qed_dev *cdev,
|
u32 *handle,
|
u32 *fw_cid, void __iomem **p_doorbell)
|
{
|
struct qed_hash_iscsi_con *hash_con;
|
int rc;
|
|
/* Allocate a hashed connection */
|
hash_con = kzalloc(sizeof(*hash_con), GFP_ATOMIC);
|
if (!hash_con)
|
return -ENOMEM;
|
|
/* Acquire the connection */
|
rc = qed_iscsi_acquire_connection(QED_AFFIN_HWFN(cdev), NULL,
|
&hash_con->con);
|
if (rc) {
|
DP_NOTICE(cdev, "Failed to acquire Connection\n");
|
kfree(hash_con);
|
return rc;
|
}
|
|
/* Added the connection to hash table */
|
*handle = hash_con->con->icid;
|
*fw_cid = hash_con->con->fw_cid;
|
hash_add(cdev->connections, &hash_con->node, *handle);
|
|
if (p_doorbell)
|
*p_doorbell = qed_iscsi_get_db_addr(QED_AFFIN_HWFN(cdev),
|
*handle);
|
|
return 0;
|
}
|
|
static int qed_iscsi_release_conn(struct qed_dev *cdev, u32 handle)
|
{
|
struct qed_hash_iscsi_con *hash_con;
|
|
hash_con = qed_iscsi_get_hash(cdev, handle);
|
if (!hash_con) {
|
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
|
handle);
|
return -EINVAL;
|
}
|
|
hlist_del(&hash_con->node);
|
qed_iscsi_release_connection(QED_AFFIN_HWFN(cdev), hash_con->con);
|
kfree(hash_con);
|
|
return 0;
|
}
|
|
static int qed_iscsi_offload_conn(struct qed_dev *cdev,
|
u32 handle,
|
struct qed_iscsi_params_offload *conn_info)
|
{
|
struct qed_hash_iscsi_con *hash_con;
|
struct qed_iscsi_conn *con;
|
|
hash_con = qed_iscsi_get_hash(cdev, handle);
|
if (!hash_con) {
|
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
|
handle);
|
return -EINVAL;
|
}
|
|
/* Update the connection with information from the params */
|
con = hash_con->con;
|
|
ether_addr_copy(con->local_mac, conn_info->src.mac);
|
ether_addr_copy(con->remote_mac, conn_info->dst.mac);
|
memcpy(con->local_ip, conn_info->src.ip, sizeof(con->local_ip));
|
memcpy(con->remote_ip, conn_info->dst.ip, sizeof(con->remote_ip));
|
con->local_port = conn_info->src.port;
|
con->remote_port = conn_info->dst.port;
|
|
con->layer_code = conn_info->layer_code;
|
con->sq_pbl_addr = conn_info->sq_pbl_addr;
|
con->initial_ack = conn_info->initial_ack;
|
con->vlan_id = conn_info->vlan_id;
|
con->tcp_flags = conn_info->tcp_flags;
|
con->ip_version = conn_info->ip_version;
|
con->default_cq = conn_info->default_cq;
|
con->ka_max_probe_cnt = conn_info->ka_max_probe_cnt;
|
con->dup_ack_theshold = conn_info->dup_ack_theshold;
|
con->rcv_next = conn_info->rcv_next;
|
con->snd_una = conn_info->snd_una;
|
con->snd_next = conn_info->snd_next;
|
con->snd_max = conn_info->snd_max;
|
con->snd_wnd = conn_info->snd_wnd;
|
con->rcv_wnd = conn_info->rcv_wnd;
|
con->snd_wl1 = conn_info->snd_wl1;
|
con->cwnd = conn_info->cwnd;
|
con->ss_thresh = conn_info->ss_thresh;
|
con->srtt = conn_info->srtt;
|
con->rtt_var = conn_info->rtt_var;
|
con->ts_recent = conn_info->ts_recent;
|
con->ts_recent_age = conn_info->ts_recent_age;
|
con->total_rt = conn_info->total_rt;
|
con->ka_timeout_delta = conn_info->ka_timeout_delta;
|
con->rt_timeout_delta = conn_info->rt_timeout_delta;
|
con->dup_ack_cnt = conn_info->dup_ack_cnt;
|
con->snd_wnd_probe_cnt = conn_info->snd_wnd_probe_cnt;
|
con->ka_probe_cnt = conn_info->ka_probe_cnt;
|
con->rt_cnt = conn_info->rt_cnt;
|
con->flow_label = conn_info->flow_label;
|
con->ka_timeout = conn_info->ka_timeout;
|
con->ka_interval = conn_info->ka_interval;
|
con->max_rt_time = conn_info->max_rt_time;
|
con->initial_rcv_wnd = conn_info->initial_rcv_wnd;
|
con->ttl = conn_info->ttl;
|
con->tos_or_tc = conn_info->tos_or_tc;
|
con->remote_port = conn_info->remote_port;
|
con->local_port = conn_info->local_port;
|
con->mss = conn_info->mss;
|
con->snd_wnd_scale = conn_info->snd_wnd_scale;
|
con->rcv_wnd_scale = conn_info->rcv_wnd_scale;
|
con->da_timeout_value = conn_info->da_timeout_value;
|
con->ack_frequency = conn_info->ack_frequency;
|
|
/* Set default values on other connection fields */
|
con->offl_flags = 0x1;
|
|
return qed_sp_iscsi_conn_offload(QED_AFFIN_HWFN(cdev), con,
|
QED_SPQ_MODE_EBLOCK, NULL);
|
}
|
|
static int qed_iscsi_update_conn(struct qed_dev *cdev,
|
u32 handle,
|
struct qed_iscsi_params_update *conn_info)
|
{
|
struct qed_hash_iscsi_con *hash_con;
|
struct qed_iscsi_conn *con;
|
|
hash_con = qed_iscsi_get_hash(cdev, handle);
|
if (!hash_con) {
|
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
|
handle);
|
return -EINVAL;
|
}
|
|
/* Update the connection with information from the params */
|
con = hash_con->con;
|
con->update_flag = conn_info->update_flag;
|
con->max_seq_size = conn_info->max_seq_size;
|
con->max_recv_pdu_length = conn_info->max_recv_pdu_length;
|
con->max_send_pdu_length = conn_info->max_send_pdu_length;
|
con->first_seq_length = conn_info->first_seq_length;
|
con->exp_stat_sn = conn_info->exp_stat_sn;
|
|
return qed_sp_iscsi_conn_update(QED_AFFIN_HWFN(cdev), con,
|
QED_SPQ_MODE_EBLOCK, NULL);
|
}
|
|
static int qed_iscsi_clear_conn_sq(struct qed_dev *cdev, u32 handle)
|
{
|
struct qed_hash_iscsi_con *hash_con;
|
|
hash_con = qed_iscsi_get_hash(cdev, handle);
|
if (!hash_con) {
|
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
|
handle);
|
return -EINVAL;
|
}
|
|
return qed_sp_iscsi_conn_clear_sq(QED_AFFIN_HWFN(cdev), hash_con->con,
|
QED_SPQ_MODE_EBLOCK, NULL);
|
}
|
|
static int qed_iscsi_destroy_conn(struct qed_dev *cdev,
|
u32 handle, u8 abrt_conn)
|
{
|
struct qed_hash_iscsi_con *hash_con;
|
|
hash_con = qed_iscsi_get_hash(cdev, handle);
|
if (!hash_con) {
|
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
|
handle);
|
return -EINVAL;
|
}
|
|
hash_con->con->abortive_dsconnect = abrt_conn;
|
|
return qed_sp_iscsi_conn_terminate(QED_AFFIN_HWFN(cdev), hash_con->con,
|
QED_SPQ_MODE_EBLOCK, NULL);
|
}
|
|
static int qed_iscsi_stats(struct qed_dev *cdev, struct qed_iscsi_stats *stats)
|
{
|
return qed_iscsi_get_stats(QED_AFFIN_HWFN(cdev), stats);
|
}
|
|
static int qed_iscsi_change_mac(struct qed_dev *cdev,
|
u32 handle, const u8 *mac)
|
{
|
struct qed_hash_iscsi_con *hash_con;
|
|
hash_con = qed_iscsi_get_hash(cdev, handle);
|
if (!hash_con) {
|
DP_NOTICE(cdev, "Failed to find connection for handle %d\n",
|
handle);
|
return -EINVAL;
|
}
|
|
return qed_sp_iscsi_mac_update(QED_AFFIN_HWFN(cdev), hash_con->con,
|
QED_SPQ_MODE_EBLOCK, NULL);
|
}
|
|
void qed_get_protocol_stats_iscsi(struct qed_dev *cdev,
|
struct qed_mcp_iscsi_stats *stats)
|
{
|
struct qed_iscsi_stats proto_stats;
|
|
/* Retrieve FW statistics */
|
memset(&proto_stats, 0, sizeof(proto_stats));
|
if (qed_iscsi_stats(cdev, &proto_stats)) {
|
DP_VERBOSE(cdev, QED_MSG_STORAGE,
|
"Failed to collect ISCSI statistics\n");
|
return;
|
}
|
|
/* Translate FW statistics into struct */
|
stats->rx_pdus = proto_stats.iscsi_rx_total_pdu_cnt;
|
stats->tx_pdus = proto_stats.iscsi_tx_total_pdu_cnt;
|
stats->rx_bytes = proto_stats.iscsi_rx_bytes_cnt;
|
stats->tx_bytes = proto_stats.iscsi_tx_bytes_cnt;
|
}
|
|
static const struct qed_iscsi_ops qed_iscsi_ops_pass = {
|
.common = &qed_common_ops_pass,
|
.ll2 = &qed_ll2_ops_pass,
|
.fill_dev_info = &qed_fill_iscsi_dev_info,
|
.register_ops = &qed_register_iscsi_ops,
|
.start = &qed_iscsi_start,
|
.stop = &qed_iscsi_stop,
|
.acquire_conn = &qed_iscsi_acquire_conn,
|
.release_conn = &qed_iscsi_release_conn,
|
.offload_conn = &qed_iscsi_offload_conn,
|
.update_conn = &qed_iscsi_update_conn,
|
.destroy_conn = &qed_iscsi_destroy_conn,
|
.clear_sq = &qed_iscsi_clear_conn_sq,
|
.get_stats = &qed_iscsi_stats,
|
.change_mac = &qed_iscsi_change_mac,
|
};
|
|
const struct qed_iscsi_ops *qed_get_iscsi_ops(void)
|
{
|
return &qed_iscsi_ops_pass;
|
}
|
EXPORT_SYMBOL(qed_get_iscsi_ops);
|
|
void qed_put_iscsi_ops(void)
|
{
|
}
|
EXPORT_SYMBOL(qed_put_iscsi_ops);
|
