diff options
Diffstat (limited to 'drivers/net/ethernet/qlogic/qed/qed_iscsi.c')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_iscsi.c | 1277 |
1 files changed, 1277 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_iscsi.c b/drivers/net/ethernet/qlogic/qed/qed_iscsi.c new file mode 100644 index 000000000000..00efb1c4c57e --- /dev/null +++ b/drivers/net/ethernet/qlogic/qed/qed_iscsi.c @@ -0,0 +1,1277 @@ +/* QLogic qed NIC Driver + * Copyright (c) 2015 QLogic Corporation + * + * This software is available under the terms of the GNU General Public License + * (GPL) Version 2, available from the file COPYING in the main directory of + * this source tree. + */ + +#include <linux/types.h> +#include <asm/byteorder.h> +#include <asm/param.h> +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/etherdevice.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/log2.h> +#include <linux/module.h> +#include <linux/pci.h> +#include <linux/slab.h> +#include <linux/stddef.h> +#include <linux/string.h> +#include <linux/version.h> +#include <linux/workqueue.h> +#include <linux/errno.h> +#include <linux/list.h> +#include <linux/spinlock.h> +#include <linux/qed/qed_iscsi_if.h> +#include "qed.h" +#include "qed_cxt.h" +#include "qed_dev_api.h" +#include "qed_hsi.h" +#include "qed_hw.h" +#include "qed_int.h" +#include "qed_iscsi.h" +#include "qed_ll2.h" +#include "qed_mcp.h" +#include "qed_sp.h" +#include "qed_sriov.h" +#include "qed_reg_addr.h" + +struct qed_iscsi_conn { + struct list_head list_entry; + bool free_on_delete; + + u16 conn_id; + u32 icid; + u32 fw_cid; + + u8 layer_code; + u8 offl_flags; + u8 connect_mode; + u32 initial_ack; + dma_addr_t sq_pbl_addr; + struct qed_chain r2tq; + struct qed_chain xhq; + struct qed_chain uhq; + + struct tcp_upload_params *tcp_upload_params_virt_addr; + dma_addr_t tcp_upload_params_phys_addr; + struct scsi_terminate_extra_params *queue_cnts_virt_addr; + dma_addr_t queue_cnts_phys_addr; + dma_addr_t syn_phy_addr; + + u16 syn_ip_payload_length; + u8 local_mac[6]; + u8 remote_mac[6]; + u16 vlan_id; + u8 tcp_flags; + u8 ip_version; + u32 remote_ip[4]; + u32 local_ip[4]; + u8 ka_max_probe_cnt; + u8 dup_ack_theshold; + u32 rcv_next; + u32 snd_una; + u32 snd_next; + u32 snd_max; + u32 snd_wnd; + u32 rcv_wnd; + u32 snd_wl1; + u32 cwnd; + u32 ss_thresh; + u16 srtt; + u16 rtt_var; + u32 ts_time; + u32 ts_recent; + u32 ts_recent_age; + u32 total_rt; + u32 ka_timeout_delta; + u32 rt_timeout_delta; + u8 dup_ack_cnt; + u8 snd_wnd_probe_cnt; + u8 ka_probe_cnt; + u8 rt_cnt; + u32 flow_label; + u32 ka_timeout; + u32 ka_interval; + u32 max_rt_time; + u32 initial_rcv_wnd; + u8 ttl; + u8 tos_or_tc; + u16 remote_port; + u16 local_port; + u16 mss; + u8 snd_wnd_scale; + u8 rcv_wnd_scale; + u32 ts_ticks_per_second; + u16 da_timeout_value; + u8 ack_frequency; + + u8 update_flag; + u8 default_cq; + u32 max_seq_size; + u32 max_recv_pdu_length; + u32 max_send_pdu_length; + u32 first_seq_length; + u32 exp_stat_sn; + u32 stat_sn; + u16 physical_q0; + u16 physical_q1; + u8 abortive_dsconnect; +}; + +static int +qed_sp_iscsi_func_start(struct qed_hwfn *p_hwfn, + enum spq_mode comp_mode, + struct qed_spq_comp_cb *p_comp_addr, + void *event_context, iscsi_event_cb_t async_event_cb) +{ + struct iscsi_init_ramrod_params *p_ramrod = NULL; + struct scsi_init_func_queues *p_queue = NULL; + struct qed_iscsi_pf_params *p_params = NULL; + struct iscsi_spe_func_init *p_init = NULL; + struct qed_spq_entry *p_ent = NULL; + struct qed_sp_init_data init_data; + int rc = 0; + u32 dval; + u16 val; + u8 i; + + /* 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_INIT_FUNC, + PROTOCOLID_ISCSI, &init_data); + if (rc) + return rc; + + p_ramrod = &p_ent->ramrod.iscsi_init; + p_init = &p_ramrod->iscsi_init_spe; + p_params = &p_hwfn->pf_params.iscsi_pf_params; + p_queue = &p_init->q_params; + + SET_FIELD(p_init->hdr.flags, + ISCSI_SLOW_PATH_HDR_LAYER_CODE, ISCSI_SLOW_PATH_LAYER_CODE); + p_init->hdr.op_code = ISCSI_RAMROD_CMD_ID_INIT_FUNC; + + val = p_params->half_way_close_timeout; + p_init->half_way_close_timeout = cpu_to_le16(val); + p_init->num_sq_pages_in_ring = p_params->num_sq_pages_in_ring; + p_init->num_r2tq_pages_in_ring = p_params->num_r2tq_pages_in_ring; + p_init->num_uhq_pages_in_ring = p_params->num_uhq_pages_in_ring; + p_init->func_params.log_page_size = p_params->log_page_size; + val = p_params->num_tasks; + p_init->func_params.num_tasks = cpu_to_le16(val); + p_init->debug_mode.flags = p_params->debug_mode; + + DMA_REGPAIR_LE(p_queue->glbl_q_params_addr, + p_params->glbl_q_params_addr); + + val = p_params->cq_num_entries; + p_queue->cq_num_entries = cpu_to_le16(val); + val = p_params->cmdq_num_entries; + p_queue->cmdq_num_entries = cpu_to_le16(val); + p_queue->num_queues = p_params->num_queues; + dval = (u8)p_hwfn->hw_info.resc_start[QED_CMDQS_CQS]; + p_queue->queue_relative_offset = (u8)dval; + p_queue->cq_sb_pi = p_params->gl_rq_pi; + p_queue->cmdq_sb_pi = p_params->gl_cmd_pi; + + for (i = 0; i < p_params->num_queues; i++) { + val = p_hwfn->sbs_info[i]->igu_sb_id; + p_queue->cq_cmdq_sb_num_arr[i] = cpu_to_le16(val); + } + + p_queue->bdq_resource_id = ISCSI_BDQ_ID(p_hwfn->port_id); + + DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_RQ], + p_params->bdq_pbl_base_addr[BDQ_ID_RQ]); + p_queue->bdq_pbl_num_entries[BDQ_ID_RQ] = + p_params->bdq_pbl_num_entries[BDQ_ID_RQ]; + val = p_params->bdq_xoff_threshold[BDQ_ID_RQ]; + p_queue->bdq_xoff_threshold[BDQ_ID_RQ] = cpu_to_le16(val); + val = p_params->bdq_xon_threshold[BDQ_ID_RQ]; + p_queue->bdq_xon_threshold[BDQ_ID_RQ] = cpu_to_le16(val); + + DMA_REGPAIR_LE(p_queue->bdq_pbl_base_address[BDQ_ID_IMM_DATA], + p_params->bdq_pbl_base_addr[BDQ_ID_IMM_DATA]); + p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA] = + p_params->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]; + val = p_params->bdq_xoff_threshold[BDQ_ID_IMM_DATA]; + p_queue->bdq_xoff_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); + val = p_params->bdq_xon_threshold[BDQ_ID_IMM_DATA]; + p_queue->bdq_xon_threshold[BDQ_ID_IMM_DATA] = cpu_to_le16(val); + val = p_params->rq_buffer_size; + p_queue->rq_buffer_size = cpu_to_le16(val); + if (p_params->is_target) { + SET_FIELD(p_queue->q_validity, + SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); + if (p_queue->bdq_pbl_num_entries[BDQ_ID_IMM_DATA]) + SET_FIELD(p_queue->q_validity, + SCSI_INIT_FUNC_QUEUES_IMM_DATA_VALID, 1); + SET_FIELD(p_queue->q_validity, + SCSI_INIT_FUNC_QUEUES_CMD_VALID, 1); + } else { + SET_FIELD(p_queue->q_validity, + SCSI_INIT_FUNC_QUEUES_RQ_VALID, 1); + } + p_ramrod->tcp_init.two_msl_timer = cpu_to_le32(p_params->two_msl_timer); + val = p_params->tx_sws_timer; + p_ramrod->tcp_init.tx_sws_timer = cpu_to_le16(val); + p_ramrod->tcp_init.maxfinrt = p_params->max_fin_rt; + + p_hwfn->p_iscsi_info->event_context = event_context; + p_hwfn->p_iscsi_info->event_cb = async_event_cb; + + return qed_spq_post(p_hwfn, p_ent, NULL); +} + +static int qed_sp_iscsi_conn_offload(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_offload *p_ramrod = NULL; + struct tcp_offload_params_opt2 *p_tcp2 = NULL; + struct tcp_offload_params *p_tcp = NULL; + struct qed_spq_entry *p_ent = NULL; + struct qed_sp_init_data init_data; + union qed_qm_pq_params pq_params; + u16 pq0_id = 0, pq1_id = 0; + dma_addr_t r2tq_pbl_addr; + dma_addr_t xhq_pbl_addr; + dma_addr_t uhq_pbl_addr; + int rc = 0; + u32 dval; + u16 wval; + u8 i; + u16 *p; + + /* 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_OFFLOAD_CONN, + PROTOCOLID_ISCSI, &init_data); + if (rc) + return rc; + + p_ramrod = &p_ent->ramrod.iscsi_conn_offload; + + /* Transmission PQ is the first of the PF */ + memset(&pq_params, 0, sizeof(pq_params)); + pq0_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params); + p_conn->physical_q0 = cpu_to_le16(pq0_id); + p_ramrod->iscsi.physical_q0 = cpu_to_le16(pq0_id); + + /* iSCSI Pure-ACK PQ */ + pq_params.iscsi.q_idx = 1; + pq1_id = qed_get_qm_pq(p_hwfn, PROTOCOLID_ISCSI, &pq_params); + p_conn->physical_q1 = cpu_to_le16(pq1_id); + p_ramrod->iscsi.physical_q1 = cpu_to_le16(pq1_id); + + p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_OFFLOAD_CONN; + SET_FIELD(p_ramrod->hdr.flags, ISCSI_SLOW_PATH_HDR_LAYER_CODE, + p_conn->layer_code); + + p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); + p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); + + DMA_REGPAIR_LE(p_ramrod->iscsi.sq_pbl_addr, p_conn->sq_pbl_addr); + + r2tq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->r2tq); + DMA_REGPAIR_LE(p_ramrod->iscsi.r2tq_pbl_addr, r2tq_pbl_addr); + + xhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->xhq); + DMA_REGPAIR_LE(p_ramrod->iscsi.xhq_pbl_addr, xhq_pbl_addr); + + uhq_pbl_addr = qed_chain_get_pbl_phys(&p_conn->uhq); + DMA_REGPAIR_LE(p_ramrod->iscsi.uhq_pbl_addr, uhq_pbl_addr); + + p_ramrod->iscsi.initial_ack = cpu_to_le32(p_conn->initial_ack); + p_ramrod->iscsi.flags = p_conn->offl_flags; + p_ramrod->iscsi.default_cq = p_conn->default_cq; + p_ramrod->iscsi.stat_sn = cpu_to_le32(p_conn->stat_sn); + + if (!GET_FIELD(p_ramrod->iscsi.flags, + ISCSI_CONN_OFFLOAD_PARAMS_TCP_ON_CHIP_1B)) { + p_tcp = &p_ramrod->tcp; + + p = (u16 *)p_conn->local_mac; + p_tcp->local_mac_addr_hi = swab16(get_unaligned(p)); + p_tcp->local_mac_addr_mid = swab16(get_unaligned(p + 1)); + p_tcp->local_mac_addr_lo = swab16(get_unaligned(p + 2)); + + p = (u16 *)p_conn->remote_mac; + p_tcp->remote_mac_addr_hi = swab16(get_unaligned(p)); + p_tcp->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); + p_tcp->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); + + p_tcp->vlan_id = cpu_to_le16(p_conn->vlan_id); + + p_tcp->flags = p_conn->tcp_flags; + p_tcp->ip_version = p_conn->ip_version; + for (i = 0; i < 4; i++) { + dval = p_conn->remote_ip[i]; + p_tcp->remote_ip[i] = cpu_to_le32(dval); + dval = p_conn->local_ip[i]; + p_tcp->local_ip[i] = cpu_to_le32(dval); + } + p_tcp->ka_max_probe_cnt = p_conn->ka_max_probe_cnt; + p_tcp->dup_ack_theshold = p_conn->dup_ack_theshold; + + p_tcp->rcv_next = cpu_to_le32(p_conn->rcv_next); + p_tcp->snd_una = cpu_to_le32(p_conn->snd_una); + p_tcp->snd_next = cpu_to_le32(p_conn->snd_next); + p_tcp->snd_max = cpu_to_le32(p_conn->snd_max); + p_tcp->snd_wnd = cpu_to_le32(p_conn->snd_wnd); + p_tcp->rcv_wnd = cpu_to_le32(p_conn->rcv_wnd); + p_tcp->snd_wl1 = cpu_to_le32(p_conn->snd_wl1); + p_tcp->cwnd = cpu_to_le32(p_conn->cwnd); + p_tcp->ss_thresh = cpu_to_le32(p_conn->ss_thresh); + p_tcp->srtt = cpu_to_le16(p_conn->srtt); + p_tcp->rtt_var = cpu_to_le16(p_conn->rtt_var); + p_tcp->ts_time = cpu_to_le32(p_conn->ts_time); + p_tcp->ts_recent = cpu_to_le32(p_conn->ts_recent); + p_tcp->ts_recent_age = cpu_to_le32(p_conn->ts_recent_age); + p_tcp->total_rt = cpu_to_le32(p_conn->total_rt); + dval = p_conn->ka_timeout_delta; + p_tcp->ka_timeout_delta = cpu_to_le32(dval); + dval = p_conn->rt_timeout_delta; + p_tcp->rt_timeout_delta = cpu_to_le32(dval); + p_tcp->dup_ack_cnt = p_conn->dup_ack_cnt; + p_tcp->snd_wnd_probe_cnt = p_conn->snd_wnd_probe_cnt; + p_tcp->ka_probe_cnt = p_conn->ka_probe_cnt; + p_tcp->rt_cnt = p_conn->rt_cnt; + p_tcp->flow_label = cpu_to_le32(p_conn->flow_label); + p_tcp->ka_timeout = cpu_to_le32(p_conn->ka_timeout); + p_tcp->ka_interval = cpu_to_le32(p_conn->ka_interval); + p_tcp->max_rt_time = cpu_to_le32(p_conn->max_rt_time); + dval = p_conn->initial_rcv_wnd; + p_tcp->initial_rcv_wnd = cpu_to_le32(dval); + p_tcp->ttl = p_conn->ttl; + p_tcp->tos_or_tc = p_conn->tos_or_tc; + p_tcp->remote_port = cpu_to_le16(p_conn->remote_port); + p_tcp->local_port = cpu_to_le16(p_conn->local_port); + p_tcp->mss = cpu_to_le16(p_conn->mss); + p_tcp->snd_wnd_scale = p_conn->snd_wnd_scale; + p_tcp->rcv_wnd_scale = p_conn->rcv_wnd_scale; + dval = p_conn->ts_ticks_per_second; + p_tcp->ts_ticks_per_second = cpu_to_le32(dval); + wval = p_conn->da_timeout_value; + p_tcp->da_timeout_value = cpu_to_le16(wval); + p_tcp->ack_frequency = p_conn->ack_frequency; + p_tcp->connect_mode = p_conn->connect_mode; + } else { + p_tcp2 = + &((struct iscsi_spe_conn_offload_option2 *)p_ramrod)->tcp; + + p = (u16 *)p_conn->local_mac; + p_tcp2->local_mac_addr_hi = swab16(get_unaligned(p)); + p_tcp2->local_mac_addr_mid = swab16(get_unaligned(p + 1)); + p_tcp2->local_mac_addr_lo = swab16(get_unaligned(p + 2)); + + p = (u16 *)p_conn->remote_mac; + p_tcp2->remote_mac_addr_hi = swab16(get_unaligned(p)); + p_tcp2->remote_mac_addr_mid = swab16(get_unaligned(p + 1)); + p_tcp2->remote_mac_addr_lo = swab16(get_unaligned(p + 2)); + + p_tcp2->vlan_id = cpu_to_le16(p_conn->vlan_id); + p_tcp2->flags = p_conn->tcp_flags; + + p_tcp2->ip_version = p_conn->ip_version; + for (i = 0; i < 4; i++) { + dval = p_conn->remote_ip[i]; + p_tcp2->remote_ip[i] = cpu_to_le32(dval); + dval = p_conn->local_ip[i]; + p_tcp2->local_ip[i] = cpu_to_le32(dval); + } + + p_tcp2->flow_label = cpu_to_le32(p_conn->flow_label); + p_tcp2->ttl = p_conn->ttl; + p_tcp2->tos_or_tc = p_conn->tos_or_tc; + p_tcp2->remote_port = cpu_to_le16(p_conn->remote_port); + p_tcp2->local_port = cpu_to_le16(p_conn->local_port); + p_tcp2->mss = cpu_to_le16(p_conn->mss); + p_tcp2->rcv_wnd_scale = p_conn->rcv_wnd_scale; + p_tcp2->connect_mode = p_conn->connect_mode; + wval = p_conn->syn_ip_payload_length; + p_tcp2->syn_ip_payload_length = cpu_to_le16(wval); + p_tcp2->syn_phy_addr_lo = DMA_LO_LE(p_conn->syn_phy_addr); + p_tcp2->syn_phy_addr_hi = DMA_HI_LE(p_conn->syn_phy_addr); + } + + return qed_spq_post(p_hwfn, p_ent, NULL); +} + +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->hdr.op_code = ISCSI_RAMROD_CMD_ID_UPDATE_CONN; + SET_FIELD(p_ramrod->hdr.flags, + ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); + + p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); + p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); + 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_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->hdr.op_code = ISCSI_RAMROD_CMD_ID_TERMINATION_CONN; + SET_FIELD(p_ramrod->hdr.flags, + ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); + + p_ramrod->conn_id = cpu_to_le16(p_conn->conn_id); + p_ramrod->fw_cid = cpu_to_le32(p_conn->icid); + 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 iscsi_slow_path_hdr *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_CLEAR_SQ, + PROTOCOLID_ISCSI, &init_data); + if (rc) + return rc; + + p_ramrod = &p_ent->ramrod.iscsi_empty; + p_ramrod->op_code = ISCSI_RAMROD_CMD_ID_CLEAR_SQ; + SET_FIELD(p_ramrod->flags, + ISCSI_SLOW_PATH_HDR_LAYER_CODE, p_conn->layer_code); + + 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 iscsi_spe_func_dstry *p_ramrod = NULL; + 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; + + p_ramrod = &p_ent->ramrod.iscsi_destroy; + p_ramrod->hdr.op_code = ISCSI_RAMROD_CMD_ID_DESTROY_FUNC; + + return qed_spq_post(p_hwfn, p_ent, NULL); +} + +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) +{ + u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id); + + return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_MSDM_RAM + + MSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id, + bdq_id); +} + +static void __iomem *qed_iscsi_get_secondary_bdq_prod(struct qed_hwfn *p_hwfn, + u8 bdq_id) +{ + u8 bdq_function_id = ISCSI_BDQ_ID(p_hwfn->port_id); + + return (u8 __iomem *)p_hwfn->regview + GTT_BAR0_MAP_REG_TSDM_RAM + + TSTORM_SCSI_BDQ_EXT_PROD_OFFSET(bdq_function_id, + bdq_id); +} + +static int qed_iscsi_setup_connection(struct qed_hwfn *p_hwfn, + 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) +{ + u16 uhq_num_elements = 0, xhq_num_elements = 0, r2tq_num_elements = 0; + struct scsi_terminate_extra_params *p_q_cnts = NULL; + struct qed_iscsi_pf_params *p_params = NULL; + 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; + + r2tq_num_elements = p_params->num_r2tq_pages_in_ring * + QED_CHAIN_PAGE_SIZE / 0x80; + rc = qed_chain_alloc(p_hwfn->cdev, + QED_CHAIN_USE_TO_CONSUME_PRODUCE, + QED_CHAIN_MODE_PBL, + QED_CHAIN_CNT_TYPE_U16, + r2tq_num_elements, 0x80, &p_conn->r2tq); + if (rc) + goto nomem_r2tq; + + uhq_num_elements = p_params->num_uhq_pages_in_ring * + QED_CHAIN_PAGE_SIZE / sizeof(struct iscsi_uhqe); + rc = qed_chain_alloc(p_hwfn->cdev, + QED_CHAIN_USE_TO_CONSUME_PRODUCE, + QED_CHAIN_MODE_PBL, + QED_CHAIN_CNT_TYPE_U16, + uhq_num_elements, + sizeof(struct iscsi_uhqe), &p_conn->uhq); + if (rc) + goto nomem_uhq; + + xhq_num_elements = uhq_num_elements; + rc = qed_chain_alloc(p_hwfn->cdev, + QED_CHAIN_USE_TO_CONSUME_PRODUCE, + QED_CHAIN_MODE_PBL, + QED_CHAIN_CNT_TYPE_U16, + xhq_num_elements, + sizeof(struct iscsi_xhqe), &p_conn->xhq); + 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_hwfn, 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); +} + +struct qed_iscsi_info *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 NULL; + + INIT_LIST_HEAD(&p_iscsi_info->free_list); + return p_iscsi_info; +} + +void qed_iscsi_setup(struct qed_hwfn *p_hwfn, + struct qed_iscsi_info *p_iscsi_info) +{ + spin_lock_init(&p_iscsi_info->lock); +} + +void qed_iscsi_free(struct qed_hwfn *p_hwfn, + struct qed_iscsi_info *p_iscsi_info) +{ + kfree(p_iscsi_info); +} + +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_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_LEADING_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); + + 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_LEADING_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_LEADING_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_LEADING_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_LEADING_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_LEADING_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_LEADING_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_time = conn_info->ts_time; + 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->ts_ticks_per_second = conn_info->ts_ticks_per_second; + 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_LEADING_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_LEADING_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_LEADING_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_LEADING_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_LEADING_HWFN(cdev), stats); +} + +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, +}; + +const struct qed_iscsi_ops *qed_get_iscsi_ops() +{ + return &qed_iscsi_ops_pass; +} +EXPORT_SYMBOL(qed_get_iscsi_ops); + +void qed_put_iscsi_ops(void) +{ +} +EXPORT_SYMBOL(qed_put_iscsi_ops); |