| /* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver. |
| * |
| * Copyright (c) 2006 - 2013 Broadcom Corporation |
| * Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved. |
| * Copyright (c) 2007, 2008 Mike Christie |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation. |
| * |
| * Written by: Anil Veerabhadrappa (anilgv@broadcom.com) |
| * Maintained by: Eddie Wai (eddie.wai@broadcom.com) |
| */ |
| |
| #include <linux/gfp.h> |
| #include <scsi/scsi_tcq.h> |
| #include <scsi/libiscsi.h> |
| #include "bnx2i.h" |
| |
| DECLARE_PER_CPU(struct bnx2i_percpu_s, bnx2i_percpu); |
| |
| /** |
| * bnx2i_get_cid_num - get cid from ep |
| * @ep: endpoint pointer |
| * |
| * Only applicable to 57710 family of devices |
| */ |
| static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep) |
| { |
| u32 cid; |
| |
| if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) |
| cid = ep->ep_cid; |
| else |
| cid = GET_CID_NUM(ep->ep_cid); |
| return cid; |
| } |
| |
| |
| /** |
| * bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type |
| * @hba: Adapter for which adjustments is to be made |
| * |
| * Only applicable to 57710 family of devices |
| */ |
| static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba) |
| { |
| u32 num_elements_per_pg; |
| |
| if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) || |
| test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) || |
| test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) { |
| if (!is_power_of_2(hba->max_sqes)) |
| hba->max_sqes = rounddown_pow_of_two(hba->max_sqes); |
| |
| if (!is_power_of_2(hba->max_rqes)) |
| hba->max_rqes = rounddown_pow_of_two(hba->max_rqes); |
| } |
| |
| /* Adjust each queue size if the user selection does not |
| * yield integral num of page buffers |
| */ |
| /* adjust SQ */ |
| num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; |
| if (hba->max_sqes < num_elements_per_pg) |
| hba->max_sqes = num_elements_per_pg; |
| else if (hba->max_sqes % num_elements_per_pg) |
| hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) & |
| ~(num_elements_per_pg - 1); |
| |
| /* adjust CQ */ |
| num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE; |
| if (hba->max_cqes < num_elements_per_pg) |
| hba->max_cqes = num_elements_per_pg; |
| else if (hba->max_cqes % num_elements_per_pg) |
| hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) & |
| ~(num_elements_per_pg - 1); |
| |
| /* adjust RQ */ |
| num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE; |
| if (hba->max_rqes < num_elements_per_pg) |
| hba->max_rqes = num_elements_per_pg; |
| else if (hba->max_rqes % num_elements_per_pg) |
| hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) & |
| ~(num_elements_per_pg - 1); |
| } |
| |
| |
| /** |
| * bnx2i_get_link_state - get network interface link state |
| * @hba: adapter instance pointer |
| * |
| * updates adapter structure flag based on netdev state |
| */ |
| static void bnx2i_get_link_state(struct bnx2i_hba *hba) |
| { |
| if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) |
| set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| else |
| clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| } |
| |
| |
| /** |
| * bnx2i_iscsi_license_error - displays iscsi license related error message |
| * @hba: adapter instance pointer |
| * @error_code: error classification |
| * |
| * Puts out an error log when driver is unable to offload iscsi connection |
| * due to license restrictions |
| */ |
| static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code) |
| { |
| if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED) |
| /* iSCSI offload not supported on this device */ |
| printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n", |
| hba->netdev->name); |
| if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED) |
| /* iSCSI offload not supported on this LOM device */ |
| printk(KERN_ERR "bnx2i: LOM is not enable to " |
| "offload iSCSI connections, dev=%s\n", |
| hba->netdev->name); |
| set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state); |
| } |
| |
| |
| /** |
| * bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification |
| * @ep: endpoint (transport identifier) structure |
| * @action: action, ARM or DISARM. For now only ARM_CQE is used |
| * |
| * Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt |
| * the driver. EQ event is generated CQ index is hit or at least 1 CQ is |
| * outstanding and on chip timer expires |
| */ |
| int bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action) |
| { |
| struct bnx2i_5771x_cq_db *cq_db; |
| u16 cq_index; |
| u16 next_index = 0; |
| u32 num_active_cmds; |
| |
| /* Coalesce CQ entries only on 10G devices */ |
| if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) |
| return 0; |
| |
| /* Do not update CQ DB multiple times before firmware writes |
| * '0xFFFF' to CQDB->SQN field. Deviation may cause spurious |
| * interrupts and other unwanted results |
| */ |
| cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; |
| |
| if (action != CNIC_ARM_CQE_FP) |
| if (cq_db->sqn[0] && cq_db->sqn[0] != 0xFFFF) |
| return 0; |
| |
| if (action == CNIC_ARM_CQE || action == CNIC_ARM_CQE_FP) { |
| num_active_cmds = atomic_read(&ep->num_active_cmds); |
| if (num_active_cmds <= event_coal_min) |
| next_index = 1; |
| else { |
| next_index = num_active_cmds >> ep->ec_shift; |
| if (next_index > num_active_cmds - event_coal_min) |
| next_index = num_active_cmds - event_coal_min; |
| } |
| if (!next_index) |
| next_index = 1; |
| cq_index = ep->qp.cqe_exp_seq_sn + next_index - 1; |
| if (cq_index > ep->qp.cqe_size * 2) |
| cq_index -= ep->qp.cqe_size * 2; |
| if (!cq_index) |
| cq_index = 1; |
| |
| cq_db->sqn[0] = cq_index; |
| } |
| return next_index; |
| } |
| |
| |
| /** |
| * bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer |
| * @conn: iscsi connection on which RQ event occurred |
| * @ptr: driver buffer to which RQ buffer contents is to |
| * be copied |
| * @len: length of valid data inside RQ buf |
| * |
| * Copies RQ buffer contents from shared (DMA'able) memory region to |
| * driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and |
| * scsi sense info |
| */ |
| void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len) |
| { |
| if (!bnx2i_conn->ep->qp.rqe_left) |
| return; |
| |
| bnx2i_conn->ep->qp.rqe_left--; |
| memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len); |
| if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) { |
| bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe; |
| bnx2i_conn->ep->qp.rq_cons_idx = 0; |
| } else { |
| bnx2i_conn->ep->qp.rq_cons_qe++; |
| bnx2i_conn->ep->qp.rq_cons_idx++; |
| } |
| } |
| |
| |
| static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn) |
| { |
| struct bnx2i_5771x_dbell dbell; |
| u32 msg; |
| |
| memset(&dbell, 0, sizeof(dbell)); |
| dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE << |
| B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT); |
| msg = *((u32 *)&dbell); |
| /* TODO : get doorbell register mapping */ |
| writel(cpu_to_le32(msg), conn->ep->qp.ctx_base); |
| } |
| |
| |
| /** |
| * bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell |
| * @conn: iscsi connection on which event to post |
| * @count: number of RQ buffer being posted to chip |
| * |
| * No need to ring hardware doorbell for 57710 family of devices |
| */ |
| void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count) |
| { |
| struct bnx2i_5771x_sq_rq_db *rq_db; |
| u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000); |
| struct bnx2i_endpoint *ep = bnx2i_conn->ep; |
| |
| ep->qp.rqe_left += count; |
| ep->qp.rq_prod_idx &= 0x7FFF; |
| ep->qp.rq_prod_idx += count; |
| |
| if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) { |
| ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes; |
| if (!hi_bit) |
| ep->qp.rq_prod_idx |= 0x8000; |
| } else |
| ep->qp.rq_prod_idx |= hi_bit; |
| |
| if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { |
| rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt; |
| rq_db->prod_idx = ep->qp.rq_prod_idx; |
| /* no need to ring hardware doorbell for 57710 */ |
| } else { |
| writew(ep->qp.rq_prod_idx, |
| ep->qp.ctx_base + CNIC_RECV_DOORBELL); |
| } |
| mmiowb(); |
| } |
| |
| |
| /** |
| * bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine |
| * @conn: iscsi connection to which new SQ entries belong |
| * @count: number of SQ WQEs to post |
| * |
| * SQ DB is updated in host memory and TX Doorbell is rung for 57710 family |
| * of devices. For 5706/5708/5709 new SQ WQE count is written into the |
| * doorbell register |
| */ |
| static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count) |
| { |
| struct bnx2i_5771x_sq_rq_db *sq_db; |
| struct bnx2i_endpoint *ep = bnx2i_conn->ep; |
| |
| atomic_inc(&ep->num_active_cmds); |
| wmb(); /* flush SQ WQE memory before the doorbell is rung */ |
| if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { |
| sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt; |
| sq_db->prod_idx = ep->qp.sq_prod_idx; |
| bnx2i_ring_577xx_doorbell(bnx2i_conn); |
| } else |
| writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL); |
| |
| mmiowb(); /* flush posted PCI writes */ |
| } |
| |
| |
| /** |
| * bnx2i_ring_dbell_update_sq_params - update SQ driver parameters |
| * @conn: iscsi connection to which new SQ entries belong |
| * @count: number of SQ WQEs to post |
| * |
| * this routine will update SQ driver parameters and ring the doorbell |
| */ |
| static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn, |
| int count) |
| { |
| int tmp_cnt; |
| |
| if (count == 1) { |
| if (bnx2i_conn->ep->qp.sq_prod_qe == |
| bnx2i_conn->ep->qp.sq_last_qe) |
| bnx2i_conn->ep->qp.sq_prod_qe = |
| bnx2i_conn->ep->qp.sq_first_qe; |
| else |
| bnx2i_conn->ep->qp.sq_prod_qe++; |
| } else { |
| if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <= |
| bnx2i_conn->ep->qp.sq_last_qe) |
| bnx2i_conn->ep->qp.sq_prod_qe += count; |
| else { |
| tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe - |
| bnx2i_conn->ep->qp.sq_prod_qe; |
| bnx2i_conn->ep->qp.sq_prod_qe = |
| &bnx2i_conn->ep->qp.sq_first_qe[count - |
| (tmp_cnt + 1)]; |
| } |
| } |
| bnx2i_conn->ep->qp.sq_prod_idx += count; |
| /* Ring the doorbell */ |
| bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx); |
| } |
| |
| |
| /** |
| * bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware |
| * @conn: iscsi connection |
| * @cmd: driver command structure which is requesting |
| * a WQE to sent to chip for further processing |
| * |
| * prepare and post an iSCSI Login request WQE to CNIC firmware |
| */ |
| int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn, |
| struct iscsi_task *task) |
| { |
| struct bnx2i_cmd *bnx2i_cmd; |
| struct bnx2i_login_request *login_wqe; |
| struct iscsi_login_req *login_hdr; |
| u32 dword; |
| |
| bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; |
| login_hdr = (struct iscsi_login_req *)task->hdr; |
| login_wqe = (struct bnx2i_login_request *) |
| bnx2i_conn->ep->qp.sq_prod_qe; |
| |
| login_wqe->op_code = login_hdr->opcode; |
| login_wqe->op_attr = login_hdr->flags; |
| login_wqe->version_max = login_hdr->max_version; |
| login_wqe->version_min = login_hdr->min_version; |
| login_wqe->data_length = ntoh24(login_hdr->dlength); |
| login_wqe->isid_lo = *((u32 *) login_hdr->isid); |
| login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2); |
| login_wqe->tsih = login_hdr->tsih; |
| login_wqe->itt = task->itt | |
| (ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT); |
| login_wqe->cid = login_hdr->cid; |
| |
| login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn); |
| login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn); |
| login_wqe->flags = ISCSI_LOGIN_REQUEST_UPDATE_EXP_STAT_SN; |
| |
| login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; |
| login_wqe->resp_bd_list_addr_hi = |
| (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); |
| |
| dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) | |
| (bnx2i_conn->gen_pdu.resp_buf_size << |
| ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); |
| login_wqe->resp_buffer = dword; |
| login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; |
| login_wqe->bd_list_addr_hi = |
| (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); |
| login_wqe->num_bds = 1; |
| login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ |
| |
| bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); |
| return 0; |
| } |
| |
| /** |
| * bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware |
| * @conn: iscsi connection |
| * @mtask: driver command structure which is requesting |
| * a WQE to sent to chip for further processing |
| * |
| * prepare and post an iSCSI Login request WQE to CNIC firmware |
| */ |
| int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn, |
| struct iscsi_task *mtask) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct iscsi_tm *tmfabort_hdr; |
| struct scsi_cmnd *ref_sc; |
| struct iscsi_task *ctask; |
| struct bnx2i_cmd *bnx2i_cmd; |
| struct bnx2i_tmf_request *tmfabort_wqe; |
| u32 dword; |
| u32 scsi_lun[2]; |
| |
| bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; |
| tmfabort_hdr = (struct iscsi_tm *)mtask->hdr; |
| tmfabort_wqe = (struct bnx2i_tmf_request *) |
| bnx2i_conn->ep->qp.sq_prod_qe; |
| |
| tmfabort_wqe->op_code = tmfabort_hdr->opcode; |
| tmfabort_wqe->op_attr = tmfabort_hdr->flags; |
| |
| tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14)); |
| tmfabort_wqe->reserved2 = 0; |
| tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn); |
| |
| switch (tmfabort_hdr->flags & ISCSI_FLAG_TM_FUNC_MASK) { |
| case ISCSI_TM_FUNC_ABORT_TASK: |
| case ISCSI_TM_FUNC_TASK_REASSIGN: |
| ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt); |
| if (!ctask || !ctask->sc) |
| /* |
| * the iscsi layer must have completed the cmd while |
| * was starting up. |
| * |
| * Note: In the case of a SCSI cmd timeout, the task's |
| * sc is still active; hence ctask->sc != 0 |
| * In this case, the task must be aborted |
| */ |
| return 0; |
| |
| ref_sc = ctask->sc; |
| if (ref_sc->sc_data_direction == DMA_TO_DEVICE) |
| dword = (ISCSI_TASK_TYPE_WRITE << |
| ISCSI_CMD_REQUEST_TYPE_SHIFT); |
| else |
| dword = (ISCSI_TASK_TYPE_READ << |
| ISCSI_CMD_REQUEST_TYPE_SHIFT); |
| tmfabort_wqe->ref_itt = (dword | |
| (tmfabort_hdr->rtt & ISCSI_ITT_MASK)); |
| break; |
| default: |
| tmfabort_wqe->ref_itt = RESERVED_ITT; |
| } |
| memcpy(scsi_lun, &tmfabort_hdr->lun, sizeof(struct scsi_lun)); |
| tmfabort_wqe->lun[0] = be32_to_cpu(scsi_lun[0]); |
| tmfabort_wqe->lun[1] = be32_to_cpu(scsi_lun[1]); |
| |
| tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn); |
| |
| tmfabort_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; |
| tmfabort_wqe->bd_list_addr_hi = (u32) |
| ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); |
| tmfabort_wqe->num_bds = 1; |
| tmfabort_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ |
| |
| bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); |
| return 0; |
| } |
| |
| /** |
| * bnx2i_send_iscsi_text - post iSCSI text WQE to hardware |
| * @conn: iscsi connection |
| * @mtask: driver command structure which is requesting |
| * a WQE to sent to chip for further processing |
| * |
| * prepare and post an iSCSI Text request WQE to CNIC firmware |
| */ |
| int bnx2i_send_iscsi_text(struct bnx2i_conn *bnx2i_conn, |
| struct iscsi_task *mtask) |
| { |
| struct bnx2i_cmd *bnx2i_cmd; |
| struct bnx2i_text_request *text_wqe; |
| struct iscsi_text *text_hdr; |
| u32 dword; |
| |
| bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data; |
| text_hdr = (struct iscsi_text *)mtask->hdr; |
| text_wqe = (struct bnx2i_text_request *) bnx2i_conn->ep->qp.sq_prod_qe; |
| |
| memset(text_wqe, 0, sizeof(struct bnx2i_text_request)); |
| |
| text_wqe->op_code = text_hdr->opcode; |
| text_wqe->op_attr = text_hdr->flags; |
| text_wqe->data_length = ntoh24(text_hdr->dlength); |
| text_wqe->itt = mtask->itt | |
| (ISCSI_TASK_TYPE_MPATH << ISCSI_TEXT_REQUEST_TYPE_SHIFT); |
| text_wqe->ttt = be32_to_cpu(text_hdr->ttt); |
| |
| text_wqe->cmd_sn = be32_to_cpu(text_hdr->cmdsn); |
| |
| text_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma; |
| text_wqe->resp_bd_list_addr_hi = |
| (u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32); |
| |
| dword = ((1 << ISCSI_TEXT_REQUEST_NUM_RESP_BDS_SHIFT) | |
| (bnx2i_conn->gen_pdu.resp_buf_size << |
| ISCSI_TEXT_REQUEST_RESP_BUFFER_LENGTH_SHIFT)); |
| text_wqe->resp_buffer = dword; |
| text_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma; |
| text_wqe->bd_list_addr_hi = |
| (u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32); |
| text_wqe->num_bds = 1; |
| text_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ |
| |
| bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); |
| return 0; |
| } |
| |
| |
| /** |
| * bnx2i_send_iscsi_scsicmd - post iSCSI scsicmd request WQE to hardware |
| * @conn: iscsi connection |
| * @cmd: driver command structure which is requesting |
| * a WQE to sent to chip for further processing |
| * |
| * prepare and post an iSCSI SCSI-CMD request WQE to CNIC firmware |
| */ |
| int bnx2i_send_iscsi_scsicmd(struct bnx2i_conn *bnx2i_conn, |
| struct bnx2i_cmd *cmd) |
| { |
| struct bnx2i_cmd_request *scsi_cmd_wqe; |
| |
| scsi_cmd_wqe = (struct bnx2i_cmd_request *) |
| bnx2i_conn->ep->qp.sq_prod_qe; |
| memcpy(scsi_cmd_wqe, &cmd->req, sizeof(struct bnx2i_cmd_request)); |
| scsi_cmd_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ |
| |
| bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); |
| return 0; |
| } |
| |
| /** |
| * bnx2i_send_iscsi_nopout - post iSCSI NOPOUT request WQE to hardware |
| * @conn: iscsi connection |
| * @cmd: driver command structure which is requesting |
| * a WQE to sent to chip for further processing |
| * @datap: payload buffer pointer |
| * @data_len: payload data length |
| * @unsol: indicated whether nopout pdu is unsolicited pdu or |
| * in response to target's NOPIN w/ TTT != FFFFFFFF |
| * |
| * prepare and post a nopout request WQE to CNIC firmware |
| */ |
| int bnx2i_send_iscsi_nopout(struct bnx2i_conn *bnx2i_conn, |
| struct iscsi_task *task, |
| char *datap, int data_len, int unsol) |
| { |
| struct bnx2i_endpoint *ep = bnx2i_conn->ep; |
| struct bnx2i_cmd *bnx2i_cmd; |
| struct bnx2i_nop_out_request *nopout_wqe; |
| struct iscsi_nopout *nopout_hdr; |
| |
| bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; |
| nopout_hdr = (struct iscsi_nopout *)task->hdr; |
| nopout_wqe = (struct bnx2i_nop_out_request *)ep->qp.sq_prod_qe; |
| |
| memset(nopout_wqe, 0x00, sizeof(struct bnx2i_nop_out_request)); |
| |
| nopout_wqe->op_code = nopout_hdr->opcode; |
| nopout_wqe->op_attr = ISCSI_FLAG_CMD_FINAL; |
| memcpy(nopout_wqe->lun, &nopout_hdr->lun, 8); |
| |
| if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { |
| u32 tmp = nopout_wqe->lun[0]; |
| /* 57710 requires LUN field to be swapped */ |
| nopout_wqe->lun[0] = nopout_wqe->lun[1]; |
| nopout_wqe->lun[1] = tmp; |
| } |
| |
| nopout_wqe->itt = ((u16)task->itt | |
| (ISCSI_TASK_TYPE_MPATH << |
| ISCSI_TMF_REQUEST_TYPE_SHIFT)); |
| nopout_wqe->ttt = be32_to_cpu(nopout_hdr->ttt); |
| nopout_wqe->flags = 0; |
| if (!unsol) |
| nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; |
| else if (nopout_hdr->itt == RESERVED_ITT) |
| nopout_wqe->flags = ISCSI_NOP_OUT_REQUEST_LOCAL_COMPLETION; |
| |
| nopout_wqe->cmd_sn = be32_to_cpu(nopout_hdr->cmdsn); |
| nopout_wqe->data_length = data_len; |
| if (data_len) { |
| /* handle payload data, not required in first release */ |
| printk(KERN_ALERT "NOPOUT: WARNING!! payload len != 0\n"); |
| } else { |
| nopout_wqe->bd_list_addr_lo = (u32) |
| bnx2i_conn->hba->mp_bd_dma; |
| nopout_wqe->bd_list_addr_hi = |
| (u32) ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); |
| nopout_wqe->num_bds = 1; |
| } |
| nopout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ |
| |
| bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); |
| return 0; |
| } |
| |
| |
| /** |
| * bnx2i_send_iscsi_logout - post iSCSI logout request WQE to hardware |
| * @conn: iscsi connection |
| * @cmd: driver command structure which is requesting |
| * a WQE to sent to chip for further processing |
| * |
| * prepare and post logout request WQE to CNIC firmware |
| */ |
| int bnx2i_send_iscsi_logout(struct bnx2i_conn *bnx2i_conn, |
| struct iscsi_task *task) |
| { |
| struct bnx2i_cmd *bnx2i_cmd; |
| struct bnx2i_logout_request *logout_wqe; |
| struct iscsi_logout *logout_hdr; |
| |
| bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data; |
| logout_hdr = (struct iscsi_logout *)task->hdr; |
| |
| logout_wqe = (struct bnx2i_logout_request *) |
| bnx2i_conn->ep->qp.sq_prod_qe; |
| memset(logout_wqe, 0x00, sizeof(struct bnx2i_logout_request)); |
| |
| logout_wqe->op_code = logout_hdr->opcode; |
| logout_wqe->cmd_sn = be32_to_cpu(logout_hdr->cmdsn); |
| logout_wqe->op_attr = |
| logout_hdr->flags | ISCSI_LOGOUT_REQUEST_ALWAYS_ONE; |
| logout_wqe->itt = ((u16)task->itt | |
| (ISCSI_TASK_TYPE_MPATH << |
| ISCSI_LOGOUT_REQUEST_TYPE_SHIFT)); |
| logout_wqe->data_length = 0; |
| logout_wqe->cid = 0; |
| |
| logout_wqe->bd_list_addr_lo = (u32) bnx2i_conn->hba->mp_bd_dma; |
| logout_wqe->bd_list_addr_hi = (u32) |
| ((u64) bnx2i_conn->hba->mp_bd_dma >> 32); |
| logout_wqe->num_bds = 1; |
| logout_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */ |
| |
| bnx2i_conn->ep->state = EP_STATE_LOGOUT_SENT; |
| |
| bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1); |
| return 0; |
| } |
| |
| |
| /** |
| * bnx2i_update_iscsi_conn - post iSCSI logout request WQE to hardware |
| * @conn: iscsi connection which requires iscsi parameter update |
| * |
| * sends down iSCSI Conn Update request to move iSCSI conn to FFP |
| */ |
| void bnx2i_update_iscsi_conn(struct iscsi_conn *conn) |
| { |
| struct bnx2i_conn *bnx2i_conn = conn->dd_data; |
| struct bnx2i_hba *hba = bnx2i_conn->hba; |
| struct kwqe *kwqe_arr[2]; |
| struct iscsi_kwqe_conn_update *update_wqe; |
| struct iscsi_kwqe_conn_update conn_update_kwqe; |
| |
| update_wqe = &conn_update_kwqe; |
| |
| update_wqe->hdr.op_code = ISCSI_KWQE_OPCODE_UPDATE_CONN; |
| update_wqe->hdr.flags = |
| (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); |
| |
| /* 5771x requires conn context id to be passed as is */ |
| if (test_bit(BNX2I_NX2_DEV_57710, &bnx2i_conn->ep->hba->cnic_dev_type)) |
| update_wqe->context_id = bnx2i_conn->ep->ep_cid; |
| else |
| update_wqe->context_id = (bnx2i_conn->ep->ep_cid >> 7); |
| update_wqe->conn_flags = 0; |
| if (conn->hdrdgst_en) |
| update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_HEADER_DIGEST; |
| if (conn->datadgst_en) |
| update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_DATA_DIGEST; |
| if (conn->session->initial_r2t_en) |
| update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_INITIAL_R2T; |
| if (conn->session->imm_data_en) |
| update_wqe->conn_flags |= ISCSI_KWQE_CONN_UPDATE_IMMEDIATE_DATA; |
| |
| update_wqe->max_send_pdu_length = conn->max_xmit_dlength; |
| update_wqe->max_recv_pdu_length = conn->max_recv_dlength; |
| update_wqe->first_burst_length = conn->session->first_burst; |
| update_wqe->max_burst_length = conn->session->max_burst; |
| update_wqe->exp_stat_sn = conn->exp_statsn; |
| update_wqe->max_outstanding_r2ts = conn->session->max_r2t; |
| update_wqe->session_error_recovery_level = conn->session->erl; |
| iscsi_conn_printk(KERN_ALERT, conn, |
| "bnx2i: conn update - MBL 0x%x FBL 0x%x" |
| "MRDSL_I 0x%x MRDSL_T 0x%x \n", |
| update_wqe->max_burst_length, |
| update_wqe->first_burst_length, |
| update_wqe->max_recv_pdu_length, |
| update_wqe->max_send_pdu_length); |
| |
| kwqe_arr[0] = (struct kwqe *) update_wqe; |
| if (hba->cnic && hba->cnic->submit_kwqes) |
| hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); |
| } |
| |
| |
| /** |
| * bnx2i_ep_ofld_timer - post iSCSI logout request WQE to hardware |
| * @data: endpoint (transport handle) structure pointer |
| * |
| * routine to handle connection offload/destroy request timeout |
| */ |
| void bnx2i_ep_ofld_timer(unsigned long data) |
| { |
| struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) data; |
| |
| if (ep->state == EP_STATE_OFLD_START) { |
| printk(KERN_ALERT "ofld_timer: CONN_OFLD timeout\n"); |
| ep->state = EP_STATE_OFLD_FAILED; |
| } else if (ep->state == EP_STATE_DISCONN_START) { |
| printk(KERN_ALERT "ofld_timer: CONN_DISCON timeout\n"); |
| ep->state = EP_STATE_DISCONN_TIMEDOUT; |
| } else if (ep->state == EP_STATE_CLEANUP_START) { |
| printk(KERN_ALERT "ofld_timer: CONN_CLEANUP timeout\n"); |
| ep->state = EP_STATE_CLEANUP_FAILED; |
| } |
| |
| wake_up_interruptible(&ep->ofld_wait); |
| } |
| |
| |
| static int bnx2i_power_of2(u32 val) |
| { |
| u32 power = 0; |
| if (val & (val - 1)) |
| return power; |
| val--; |
| while (val) { |
| val = val >> 1; |
| power++; |
| } |
| return power; |
| } |
| |
| |
| /** |
| * bnx2i_send_cmd_cleanup_req - send iscsi cmd context clean-up request |
| * @hba: adapter structure pointer |
| * @cmd: driver command structure which is requesting |
| * a WQE to sent to chip for further processing |
| * |
| * prepares and posts CONN_OFLD_REQ1/2 KWQE |
| */ |
| void bnx2i_send_cmd_cleanup_req(struct bnx2i_hba *hba, struct bnx2i_cmd *cmd) |
| { |
| struct bnx2i_cleanup_request *cmd_cleanup; |
| |
| cmd_cleanup = |
| (struct bnx2i_cleanup_request *)cmd->conn->ep->qp.sq_prod_qe; |
| memset(cmd_cleanup, 0x00, sizeof(struct bnx2i_cleanup_request)); |
| |
| cmd_cleanup->op_code = ISCSI_OPCODE_CLEANUP_REQUEST; |
| cmd_cleanup->itt = cmd->req.itt; |
| cmd_cleanup->cq_index = 0; /* CQ# used for completion, 5771x only */ |
| |
| bnx2i_ring_dbell_update_sq_params(cmd->conn, 1); |
| } |
| |
| |
| /** |
| * bnx2i_send_conn_destroy - initiates iscsi connection teardown process |
| * @hba: adapter structure pointer |
| * @ep: endpoint (transport identifier) structure |
| * |
| * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate |
| * iscsi connection context clean-up process |
| */ |
| int bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) |
| { |
| struct kwqe *kwqe_arr[2]; |
| struct iscsi_kwqe_conn_destroy conn_cleanup; |
| int rc = -EINVAL; |
| |
| memset(&conn_cleanup, 0x00, sizeof(struct iscsi_kwqe_conn_destroy)); |
| |
| conn_cleanup.hdr.op_code = ISCSI_KWQE_OPCODE_DESTROY_CONN; |
| conn_cleanup.hdr.flags = |
| (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); |
| /* 5771x requires conn context id to be passed as is */ |
| if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) |
| conn_cleanup.context_id = ep->ep_cid; |
| else |
| conn_cleanup.context_id = (ep->ep_cid >> 7); |
| |
| conn_cleanup.reserved0 = (u16)ep->ep_iscsi_cid; |
| |
| kwqe_arr[0] = (struct kwqe *) &conn_cleanup; |
| if (hba->cnic && hba->cnic->submit_kwqes) |
| rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1); |
| |
| return rc; |
| } |
| |
| |
| /** |
| * bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process |
| * @hba: adapter structure pointer |
| * @ep: endpoint (transport identifier) structure |
| * |
| * 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE |
| */ |
| static int bnx2i_570x_send_conn_ofld_req(struct bnx2i_hba *hba, |
| struct bnx2i_endpoint *ep) |
| { |
| struct kwqe *kwqe_arr[2]; |
| struct iscsi_kwqe_conn_offload1 ofld_req1; |
| struct iscsi_kwqe_conn_offload2 ofld_req2; |
| dma_addr_t dma_addr; |
| int num_kwqes = 2; |
| u32 *ptbl; |
| int rc = -EINVAL; |
| |
| ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; |
| ofld_req1.hdr.flags = |
| (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); |
| |
| ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; |
| |
| dma_addr = ep->qp.sq_pgtbl_phys; |
| ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; |
| ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); |
| |
| dma_addr = ep->qp.cq_pgtbl_phys; |
| ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; |
| ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); |
| |
| ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; |
| ofld_req2.hdr.flags = |
| (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); |
| |
| dma_addr = ep->qp.rq_pgtbl_phys; |
| ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; |
| ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); |
| |
| ptbl = (u32 *) ep->qp.sq_pgtbl_virt; |
| |
| ofld_req2.sq_first_pte.hi = *ptbl++; |
| ofld_req2.sq_first_pte.lo = *ptbl; |
| |
| ptbl = (u32 *) ep->qp.cq_pgtbl_virt; |
| ofld_req2.cq_first_pte.hi = *ptbl++; |
| ofld_req2.cq_first_pte.lo = *ptbl; |
| |
| kwqe_arr[0] = (struct kwqe *) &ofld_req1; |
| kwqe_arr[1] = (struct kwqe *) &ofld_req2; |
| ofld_req2.num_additional_wqes = 0; |
| |
| if (hba->cnic && hba->cnic->submit_kwqes) |
| rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); |
| |
| return rc; |
| } |
| |
| |
| /** |
| * bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation |
| * @hba: adapter structure pointer |
| * @ep: endpoint (transport identifier) structure |
| * |
| * 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE |
| */ |
| static int bnx2i_5771x_send_conn_ofld_req(struct bnx2i_hba *hba, |
| struct bnx2i_endpoint *ep) |
| { |
| struct kwqe *kwqe_arr[5]; |
| struct iscsi_kwqe_conn_offload1 ofld_req1; |
| struct iscsi_kwqe_conn_offload2 ofld_req2; |
| struct iscsi_kwqe_conn_offload3 ofld_req3[1]; |
| dma_addr_t dma_addr; |
| int num_kwqes = 2; |
| u32 *ptbl; |
| int rc = -EINVAL; |
| |
| ofld_req1.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN1; |
| ofld_req1.hdr.flags = |
| (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); |
| |
| ofld_req1.iscsi_conn_id = (u16) ep->ep_iscsi_cid; |
| |
| dma_addr = ep->qp.sq_pgtbl_phys + ISCSI_SQ_DB_SIZE; |
| ofld_req1.sq_page_table_addr_lo = (u32) dma_addr; |
| ofld_req1.sq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); |
| |
| dma_addr = ep->qp.cq_pgtbl_phys + ISCSI_CQ_DB_SIZE; |
| ofld_req1.cq_page_table_addr_lo = (u32) dma_addr; |
| ofld_req1.cq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); |
| |
| ofld_req2.hdr.op_code = ISCSI_KWQE_OPCODE_OFFLOAD_CONN2; |
| ofld_req2.hdr.flags = |
| (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); |
| |
| dma_addr = ep->qp.rq_pgtbl_phys + ISCSI_RQ_DB_SIZE; |
| ofld_req2.rq_page_table_addr_lo = (u32) dma_addr; |
| ofld_req2.rq_page_table_addr_hi = (u32) ((u64) dma_addr >> 32); |
| |
| ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); |
| ofld_req2.sq_first_pte.hi = *ptbl++; |
| ofld_req2.sq_first_pte.lo = *ptbl; |
| |
| ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); |
| ofld_req2.cq_first_pte.hi = *ptbl++; |
| ofld_req2.cq_first_pte.lo = *ptbl; |
| |
| kwqe_arr[0] = (struct kwqe *) &ofld_req1; |
| kwqe_arr[1] = (struct kwqe *) &ofld_req2; |
| |
| ofld_req2.num_additional_wqes = 1; |
| memset(ofld_req3, 0x00, sizeof(ofld_req3[0])); |
| ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); |
| ofld_req3[0].qp_first_pte[0].hi = *ptbl++; |
| ofld_req3[0].qp_first_pte[0].lo = *ptbl; |
| |
| kwqe_arr[2] = (struct kwqe *) ofld_req3; |
| /* need if we decide to go with multiple KCQE's per conn */ |
| num_kwqes += 1; |
| |
| if (hba->cnic && hba->cnic->submit_kwqes) |
| rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes); |
| |
| return rc; |
| } |
| |
| /** |
| * bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process |
| * |
| * @hba: adapter structure pointer |
| * @ep: endpoint (transport identifier) structure |
| * |
| * this routine prepares and posts CONN_OFLD_REQ1/2 KWQE |
| */ |
| int bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) |
| { |
| int rc; |
| |
| if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type)) |
| rc = bnx2i_5771x_send_conn_ofld_req(hba, ep); |
| else |
| rc = bnx2i_570x_send_conn_ofld_req(hba, ep); |
| |
| return rc; |
| } |
| |
| |
| /** |
| * setup_qp_page_tables - iscsi QP page table setup function |
| * @ep: endpoint (transport identifier) structure |
| * |
| * Sets up page tables for SQ/RQ/CQ, 1G/sec (5706/5708/5709) devices requires |
| * 64-bit address in big endian format. Whereas 10G/sec (57710) requires |
| * PT in little endian format |
| */ |
| static void setup_qp_page_tables(struct bnx2i_endpoint *ep) |
| { |
| int num_pages; |
| u32 *ptbl; |
| dma_addr_t page; |
| int cnic_dev_10g; |
| |
| if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) |
| cnic_dev_10g = 1; |
| else |
| cnic_dev_10g = 0; |
| |
| /* SQ page table */ |
| memset(ep->qp.sq_pgtbl_virt, 0, ep->qp.sq_pgtbl_size); |
| num_pages = ep->qp.sq_mem_size / PAGE_SIZE; |
| page = ep->qp.sq_phys; |
| |
| if (cnic_dev_10g) |
| ptbl = (u32 *)((u8 *)ep->qp.sq_pgtbl_virt + ISCSI_SQ_DB_SIZE); |
| else |
| ptbl = (u32 *) ep->qp.sq_pgtbl_virt; |
| while (num_pages--) { |
| if (cnic_dev_10g) { |
| /* PTE is written in little endian format for 57710 */ |
| *ptbl = (u32) page; |
| ptbl++; |
| *ptbl = (u32) ((u64) page >> 32); |
| ptbl++; |
| page += PAGE_SIZE; |
| } else { |
| /* PTE is written in big endian format for |
| * 5706/5708/5709 devices */ |
| *ptbl = (u32) ((u64) page >> 32); |
| ptbl++; |
| *ptbl = (u32) page; |
| ptbl++; |
| page += PAGE_SIZE; |
| } |
| } |
| |
| /* RQ page table */ |
| memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); |
| num_pages = ep->qp.rq_mem_size / PAGE_SIZE; |
| page = ep->qp.rq_phys; |
| |
| if (cnic_dev_10g) |
| ptbl = (u32 *)((u8 *)ep->qp.rq_pgtbl_virt + ISCSI_RQ_DB_SIZE); |
| else |
| ptbl = (u32 *) ep->qp.rq_pgtbl_virt; |
| while (num_pages--) { |
| if (cnic_dev_10g) { |
| /* PTE is written in little endian format for 57710 */ |
| *ptbl = (u32) page; |
| ptbl++; |
| *ptbl = (u32) ((u64) page >> 32); |
| ptbl++; |
| page += PAGE_SIZE; |
| } else { |
| /* PTE is written in big endian format for |
| * 5706/5708/5709 devices */ |
| *ptbl = (u32) ((u64) page >> 32); |
| ptbl++; |
| *ptbl = (u32) page; |
| ptbl++; |
| page += PAGE_SIZE; |
| } |
| } |
| |
| /* CQ page table */ |
| memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); |
| num_pages = ep->qp.cq_mem_size / PAGE_SIZE; |
| page = ep->qp.cq_phys; |
| |
| if (cnic_dev_10g) |
| ptbl = (u32 *)((u8 *)ep->qp.cq_pgtbl_virt + ISCSI_CQ_DB_SIZE); |
| else |
| ptbl = (u32 *) ep->qp.cq_pgtbl_virt; |
| while (num_pages--) { |
| if (cnic_dev_10g) { |
| /* PTE is written in little endian format for 57710 */ |
| *ptbl = (u32) page; |
| ptbl++; |
| *ptbl = (u32) ((u64) page >> 32); |
| ptbl++; |
| page += PAGE_SIZE; |
| } else { |
| /* PTE is written in big endian format for |
| * 5706/5708/5709 devices */ |
| *ptbl = (u32) ((u64) page >> 32); |
| ptbl++; |
| *ptbl = (u32) page; |
| ptbl++; |
| page += PAGE_SIZE; |
| } |
| } |
| } |
| |
| |
| /** |
| * bnx2i_alloc_qp_resc - allocates required resources for QP. |
| * @hba: adapter structure pointer |
| * @ep: endpoint (transport identifier) structure |
| * |
| * Allocate QP (transport layer for iSCSI connection) resources, DMA'able |
| * memory for SQ/RQ/CQ and page tables. EP structure elements such |
| * as producer/consumer indexes/pointers, queue sizes and page table |
| * contents are setup |
| */ |
| int bnx2i_alloc_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) |
| { |
| struct bnx2i_5771x_cq_db *cq_db; |
| |
| ep->hba = hba; |
| ep->conn = NULL; |
| ep->ep_cid = ep->ep_iscsi_cid = ep->ep_pg_cid = 0; |
| |
| /* Allocate page table memory for SQ which is page aligned */ |
| ep->qp.sq_mem_size = hba->max_sqes * BNX2I_SQ_WQE_SIZE; |
| ep->qp.sq_mem_size = |
| (ep->qp.sq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; |
| ep->qp.sq_pgtbl_size = |
| (ep->qp.sq_mem_size / PAGE_SIZE) * sizeof(void *); |
| ep->qp.sq_pgtbl_size = |
| (ep->qp.sq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; |
| |
| ep->qp.sq_pgtbl_virt = |
| dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, |
| &ep->qp.sq_pgtbl_phys, GFP_KERNEL); |
| if (!ep->qp.sq_pgtbl_virt) { |
| printk(KERN_ALERT "bnx2i: unable to alloc SQ PT mem (%d)\n", |
| ep->qp.sq_pgtbl_size); |
| goto mem_alloc_err; |
| } |
| |
| /* Allocate memory area for actual SQ element */ |
| ep->qp.sq_virt = |
| dma_alloc_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, |
| &ep->qp.sq_phys, GFP_KERNEL); |
| if (!ep->qp.sq_virt) { |
| printk(KERN_ALERT "bnx2i: unable to alloc SQ BD memory %d\n", |
| ep->qp.sq_mem_size); |
| goto mem_alloc_err; |
| } |
| |
| memset(ep->qp.sq_virt, 0x00, ep->qp.sq_mem_size); |
| ep->qp.sq_first_qe = ep->qp.sq_virt; |
| ep->qp.sq_prod_qe = ep->qp.sq_first_qe; |
| ep->qp.sq_cons_qe = ep->qp.sq_first_qe; |
| ep->qp.sq_last_qe = &ep->qp.sq_first_qe[hba->max_sqes - 1]; |
| ep->qp.sq_prod_idx = 0; |
| ep->qp.sq_cons_idx = 0; |
| ep->qp.sqe_left = hba->max_sqes; |
| |
| /* Allocate page table memory for CQ which is page aligned */ |
| ep->qp.cq_mem_size = hba->max_cqes * BNX2I_CQE_SIZE; |
| ep->qp.cq_mem_size = |
| (ep->qp.cq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; |
| ep->qp.cq_pgtbl_size = |
| (ep->qp.cq_mem_size / PAGE_SIZE) * sizeof(void *); |
| ep->qp.cq_pgtbl_size = |
| (ep->qp.cq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; |
| |
| ep->qp.cq_pgtbl_virt = |
| dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, |
| &ep->qp.cq_pgtbl_phys, GFP_KERNEL); |
| if (!ep->qp.cq_pgtbl_virt) { |
| printk(KERN_ALERT "bnx2i: unable to alloc CQ PT memory %d\n", |
| ep->qp.cq_pgtbl_size); |
| goto mem_alloc_err; |
| } |
| |
| /* Allocate memory area for actual CQ element */ |
| ep->qp.cq_virt = |
| dma_alloc_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, |
| &ep->qp.cq_phys, GFP_KERNEL); |
| if (!ep->qp.cq_virt) { |
| printk(KERN_ALERT "bnx2i: unable to alloc CQ BD memory %d\n", |
| ep->qp.cq_mem_size); |
| goto mem_alloc_err; |
| } |
| memset(ep->qp.cq_virt, 0x00, ep->qp.cq_mem_size); |
| |
| ep->qp.cq_first_qe = ep->qp.cq_virt; |
| ep->qp.cq_prod_qe = ep->qp.cq_first_qe; |
| ep->qp.cq_cons_qe = ep->qp.cq_first_qe; |
| ep->qp.cq_last_qe = &ep->qp.cq_first_qe[hba->max_cqes - 1]; |
| ep->qp.cq_prod_idx = 0; |
| ep->qp.cq_cons_idx = 0; |
| ep->qp.cqe_left = hba->max_cqes; |
| ep->qp.cqe_exp_seq_sn = ISCSI_INITIAL_SN; |
| ep->qp.cqe_size = hba->max_cqes; |
| |
| /* Invalidate all EQ CQE index, req only for 57710 */ |
| cq_db = (struct bnx2i_5771x_cq_db *) ep->qp.cq_pgtbl_virt; |
| memset(cq_db->sqn, 0xFF, sizeof(cq_db->sqn[0]) * BNX2X_MAX_CQS); |
| |
| /* Allocate page table memory for RQ which is page aligned */ |
| ep->qp.rq_mem_size = hba->max_rqes * BNX2I_RQ_WQE_SIZE; |
| ep->qp.rq_mem_size = |
| (ep->qp.rq_mem_size + (PAGE_SIZE - 1)) & PAGE_MASK; |
| ep->qp.rq_pgtbl_size = |
| (ep->qp.rq_mem_size / PAGE_SIZE) * sizeof(void *); |
| ep->qp.rq_pgtbl_size = |
| (ep->qp.rq_pgtbl_size + (PAGE_SIZE - 1)) & PAGE_MASK; |
| |
| ep->qp.rq_pgtbl_virt = |
| dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, |
| &ep->qp.rq_pgtbl_phys, GFP_KERNEL); |
| if (!ep->qp.rq_pgtbl_virt) { |
| printk(KERN_ALERT "bnx2i: unable to alloc RQ PT mem %d\n", |
| ep->qp.rq_pgtbl_size); |
| goto mem_alloc_err; |
| } |
| |
| /* Allocate memory area for actual RQ element */ |
| ep->qp.rq_virt = |
| dma_alloc_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, |
| &ep->qp.rq_phys, GFP_KERNEL); |
| if (!ep->qp.rq_virt) { |
| printk(KERN_ALERT "bnx2i: unable to alloc RQ BD memory %d\n", |
| ep->qp.rq_mem_size); |
| goto mem_alloc_err; |
| } |
| |
| ep->qp.rq_first_qe = ep->qp.rq_virt; |
| ep->qp.rq_prod_qe = ep->qp.rq_first_qe; |
| ep->qp.rq_cons_qe = ep->qp.rq_first_qe; |
| ep->qp.rq_last_qe = &ep->qp.rq_first_qe[hba->max_rqes - 1]; |
| ep->qp.rq_prod_idx = 0x8000; |
| ep->qp.rq_cons_idx = 0; |
| ep->qp.rqe_left = hba->max_rqes; |
| |
| setup_qp_page_tables(ep); |
| |
| return 0; |
| |
| mem_alloc_err: |
| bnx2i_free_qp_resc(hba, ep); |
| return -ENOMEM; |
| } |
| |
| |
| |
| /** |
| * bnx2i_free_qp_resc - free memory resources held by QP |
| * @hba: adapter structure pointer |
| * @ep: endpoint (transport identifier) structure |
| * |
| * Free QP resources - SQ/RQ/CQ memory and page tables. |
| */ |
| void bnx2i_free_qp_resc(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep) |
| { |
| if (ep->qp.ctx_base) { |
| iounmap(ep->qp.ctx_base); |
| ep->qp.ctx_base = NULL; |
| } |
| /* Free SQ mem */ |
| if (ep->qp.sq_pgtbl_virt) { |
| dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_pgtbl_size, |
| ep->qp.sq_pgtbl_virt, ep->qp.sq_pgtbl_phys); |
| ep->qp.sq_pgtbl_virt = NULL; |
| ep->qp.sq_pgtbl_phys = 0; |
| } |
| if (ep->qp.sq_virt) { |
| dma_free_coherent(&hba->pcidev->dev, ep->qp.sq_mem_size, |
| ep->qp.sq_virt, ep->qp.sq_phys); |
| ep->qp.sq_virt = NULL; |
| ep->qp.sq_phys = 0; |
| } |
| |
| /* Free RQ mem */ |
| if (ep->qp.rq_pgtbl_virt) { |
| dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_pgtbl_size, |
| ep->qp.rq_pgtbl_virt, ep->qp.rq_pgtbl_phys); |
| ep->qp.rq_pgtbl_virt = NULL; |
| ep->qp.rq_pgtbl_phys = 0; |
| } |
| if (ep->qp.rq_virt) { |
| dma_free_coherent(&hba->pcidev->dev, ep->qp.rq_mem_size, |
| ep->qp.rq_virt, ep->qp.rq_phys); |
| ep->qp.rq_virt = NULL; |
| ep->qp.rq_phys = 0; |
| } |
| |
| /* Free CQ mem */ |
| if (ep->qp.cq_pgtbl_virt) { |
| dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_pgtbl_size, |
| ep->qp.cq_pgtbl_virt, ep->qp.cq_pgtbl_phys); |
| ep->qp.cq_pgtbl_virt = NULL; |
| ep->qp.cq_pgtbl_phys = 0; |
| } |
| if (ep->qp.cq_virt) { |
| dma_free_coherent(&hba->pcidev->dev, ep->qp.cq_mem_size, |
| ep->qp.cq_virt, ep->qp.cq_phys); |
| ep->qp.cq_virt = NULL; |
| ep->qp.cq_phys = 0; |
| } |
| } |
| |
| |
| /** |
| * bnx2i_send_fw_iscsi_init_msg - initiates initial handshake with iscsi f/w |
| * @hba: adapter structure pointer |
| * |
| * Send down iscsi_init KWQEs which initiates the initial handshake with the f/w |
| * This results in iSCSi support validation and on-chip context manager |
| * initialization. Firmware completes this handshake with a CQE carrying |
| * the result of iscsi support validation. Parameter carried by |
| * iscsi init request determines the number of offloaded connection and |
| * tolerance level for iscsi protocol violation this hba/chip can support |
| */ |
| int bnx2i_send_fw_iscsi_init_msg(struct bnx2i_hba *hba) |
| { |
| struct kwqe *kwqe_arr[3]; |
| struct iscsi_kwqe_init1 iscsi_init; |
| struct iscsi_kwqe_init2 iscsi_init2; |
| int rc = 0; |
| u64 mask64; |
| |
| memset(&iscsi_init, 0x00, sizeof(struct iscsi_kwqe_init1)); |
| memset(&iscsi_init2, 0x00, sizeof(struct iscsi_kwqe_init2)); |
| |
| bnx2i_adjust_qp_size(hba); |
| |
| iscsi_init.flags = |
| ISCSI_PAGE_SIZE_4K << ISCSI_KWQE_INIT1_PAGE_SIZE_SHIFT; |
| if (en_tcp_dack) |
| iscsi_init.flags |= ISCSI_KWQE_INIT1_DELAYED_ACK_ENABLE; |
| iscsi_init.reserved0 = 0; |
| iscsi_init.num_cqs = 1; |
| iscsi_init.hdr.op_code = ISCSI_KWQE_OPCODE_INIT1; |
| iscsi_init.hdr.flags = |
| (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); |
| |
| iscsi_init.dummy_buffer_addr_lo = (u32) hba->dummy_buf_dma; |
| iscsi_init.dummy_buffer_addr_hi = |
| (u32) ((u64) hba->dummy_buf_dma >> 32); |
| |
| hba->num_ccell = hba->max_sqes >> 1; |
| hba->ctx_ccell_tasks = |
| ((hba->num_ccell & 0xFFFF) | (hba->max_sqes << 16)); |
| iscsi_init.num_ccells_per_conn = hba->num_ccell; |
| iscsi_init.num_tasks_per_conn = hba->max_sqes; |
| iscsi_init.sq_wqes_per_page = PAGE_SIZE / BNX2I_SQ_WQE_SIZE; |
| iscsi_init.sq_num_wqes = hba->max_sqes; |
| iscsi_init.cq_log_wqes_per_page = |
| (u8) bnx2i_power_of2(PAGE_SIZE / BNX2I_CQE_SIZE); |
| iscsi_init.cq_num_wqes = hba->max_cqes; |
| iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + |
| (PAGE_SIZE - 1)) / PAGE_SIZE; |
| iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + |
| (PAGE_SIZE - 1)) / PAGE_SIZE; |
| iscsi_init.rq_buffer_size = BNX2I_RQ_WQE_SIZE; |
| iscsi_init.rq_num_wqes = hba->max_rqes; |
| |
| |
| iscsi_init2.hdr.op_code = ISCSI_KWQE_OPCODE_INIT2; |
| iscsi_init2.hdr.flags = |
| (ISCSI_KWQE_LAYER_CODE << ISCSI_KWQE_HEADER_LAYER_CODE_SHIFT); |
| iscsi_init2.max_cq_sqn = hba->max_cqes * 2 + 1; |
| mask64 = 0x0ULL; |
| mask64 |= ( |
| /* CISCO MDS */ |
| (1UL << |
| ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV) | |
| /* HP MSA1510i */ |
| (1UL << |
| ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN) | |
| /* EMC */ |
| (1ULL << ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN)); |
| if (error_mask1) { |
| iscsi_init2.error_bit_map[0] = error_mask1; |
| mask64 ^= (u32)(mask64); |
| mask64 |= error_mask1; |
| } else |
| iscsi_init2.error_bit_map[0] = (u32) mask64; |
| |
| if (error_mask2) { |
| iscsi_init2.error_bit_map[1] = error_mask2; |
| mask64 &= 0xffffffff; |
| mask64 |= ((u64)error_mask2 << 32); |
| } else |
| iscsi_init2.error_bit_map[1] = (u32) (mask64 >> 32); |
| |
| iscsi_error_mask = mask64; |
| |
| kwqe_arr[0] = (struct kwqe *) &iscsi_init; |
| kwqe_arr[1] = (struct kwqe *) &iscsi_init2; |
| |
| if (hba->cnic && hba->cnic->submit_kwqes) |
| rc = hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 2); |
| return rc; |
| } |
| |
| |
| /** |
| * bnx2i_process_scsi_cmd_resp - this function handles scsi cmd completion. |
| * @session: iscsi session |
| * @bnx2i_conn: bnx2i connection |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process SCSI CMD Response CQE & complete the request to SCSI-ML |
| */ |
| int bnx2i_process_scsi_cmd_resp(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct bnx2i_hba *hba = bnx2i_conn->hba; |
| struct bnx2i_cmd_response *resp_cqe; |
| struct bnx2i_cmd *bnx2i_cmd; |
| struct iscsi_task *task; |
| struct iscsi_scsi_rsp *hdr; |
| u32 datalen = 0; |
| |
| resp_cqe = (struct bnx2i_cmd_response *)cqe; |
| spin_lock_bh(&session->back_lock); |
| task = iscsi_itt_to_task(conn, |
| resp_cqe->itt & ISCSI_CMD_RESPONSE_INDEX); |
| if (!task) |
| goto fail; |
| |
| bnx2i_cmd = task->dd_data; |
| |
| if (bnx2i_cmd->req.op_attr & ISCSI_CMD_REQUEST_READ) { |
| conn->datain_pdus_cnt += |
| resp_cqe->task_stat.read_stat.num_data_ins; |
| conn->rxdata_octets += |
| bnx2i_cmd->req.total_data_transfer_length; |
| ADD_STATS_64(hba, rx_pdus, |
| resp_cqe->task_stat.read_stat.num_data_ins); |
| ADD_STATS_64(hba, rx_bytes, |
| bnx2i_cmd->req.total_data_transfer_length); |
| } else { |
| conn->dataout_pdus_cnt += |
| resp_cqe->task_stat.write_stat.num_data_outs; |
| conn->r2t_pdus_cnt += |
| resp_cqe->task_stat.write_stat.num_r2ts; |
| conn->txdata_octets += |
| bnx2i_cmd->req.total_data_transfer_length; |
| ADD_STATS_64(hba, tx_pdus, |
| resp_cqe->task_stat.write_stat.num_data_outs); |
| ADD_STATS_64(hba, tx_bytes, |
| bnx2i_cmd->req.total_data_transfer_length); |
| ADD_STATS_64(hba, rx_pdus, |
| resp_cqe->task_stat.write_stat.num_r2ts); |
| } |
| bnx2i_iscsi_unmap_sg_list(bnx2i_cmd); |
| |
| hdr = (struct iscsi_scsi_rsp *)task->hdr; |
| resp_cqe = (struct bnx2i_cmd_response *)cqe; |
| hdr->opcode = resp_cqe->op_code; |
| hdr->max_cmdsn = cpu_to_be32(resp_cqe->max_cmd_sn); |
| hdr->exp_cmdsn = cpu_to_be32(resp_cqe->exp_cmd_sn); |
| hdr->response = resp_cqe->response; |
| hdr->cmd_status = resp_cqe->status; |
| hdr->flags = resp_cqe->response_flags; |
| hdr->residual_count = cpu_to_be32(resp_cqe->residual_count); |
| |
| if (resp_cqe->op_code == ISCSI_OP_SCSI_DATA_IN) |
| goto done; |
| |
| if (resp_cqe->status == SAM_STAT_CHECK_CONDITION) { |
| datalen = resp_cqe->data_length; |
| if (datalen < 2) |
| goto done; |
| |
| if (datalen > BNX2I_RQ_WQE_SIZE) { |
| iscsi_conn_printk(KERN_ERR, conn, |
| "sense data len %d > RQ sz\n", |
| datalen); |
| datalen = BNX2I_RQ_WQE_SIZE; |
| } else if (datalen > ISCSI_DEF_MAX_RECV_SEG_LEN) { |
| iscsi_conn_printk(KERN_ERR, conn, |
| "sense data len %d > conn data\n", |
| datalen); |
| datalen = ISCSI_DEF_MAX_RECV_SEG_LEN; |
| } |
| |
| bnx2i_get_rq_buf(bnx2i_cmd->conn, conn->data, datalen); |
| bnx2i_put_rq_buf(bnx2i_cmd->conn, 1); |
| } |
| |
| done: |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, |
| conn->data, datalen); |
| fail: |
| spin_unlock_bh(&session->back_lock); |
| return 0; |
| } |
| |
| |
| /** |
| * bnx2i_process_login_resp - this function handles iscsi login response |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process Login Response CQE & complete it to open-iscsi user daemon |
| */ |
| static int bnx2i_process_login_resp(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct iscsi_task *task; |
| struct bnx2i_login_response *login; |
| struct iscsi_login_rsp *resp_hdr; |
| int pld_len; |
| int pad_len; |
| |
| login = (struct bnx2i_login_response *) cqe; |
| spin_lock(&session->back_lock); |
| task = iscsi_itt_to_task(conn, |
| login->itt & ISCSI_LOGIN_RESPONSE_INDEX); |
| if (!task) |
| goto done; |
| |
| resp_hdr = (struct iscsi_login_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
| resp_hdr->opcode = login->op_code; |
| resp_hdr->flags = login->response_flags; |
| resp_hdr->max_version = login->version_max; |
| resp_hdr->active_version = login->version_active; |
| resp_hdr->hlength = 0; |
| |
| hton24(resp_hdr->dlength, login->data_length); |
| memcpy(resp_hdr->isid, &login->isid_lo, 6); |
| resp_hdr->tsih = cpu_to_be16(login->tsih); |
| resp_hdr->itt = task->hdr->itt; |
| resp_hdr->statsn = cpu_to_be32(login->stat_sn); |
| resp_hdr->exp_cmdsn = cpu_to_be32(login->exp_cmd_sn); |
| resp_hdr->max_cmdsn = cpu_to_be32(login->max_cmd_sn); |
| resp_hdr->status_class = login->status_class; |
| resp_hdr->status_detail = login->status_detail; |
| pld_len = login->data_length; |
| bnx2i_conn->gen_pdu.resp_wr_ptr = |
| bnx2i_conn->gen_pdu.resp_buf + pld_len; |
| |
| pad_len = 0; |
| if (pld_len & 0x3) |
| pad_len = 4 - (pld_len % 4); |
| |
| if (pad_len) { |
| int i = 0; |
| for (i = 0; i < pad_len; i++) { |
| bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; |
| bnx2i_conn->gen_pdu.resp_wr_ptr++; |
| } |
| } |
| |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, |
| bnx2i_conn->gen_pdu.resp_buf, |
| bnx2i_conn->gen_pdu.resp_wr_ptr - bnx2i_conn->gen_pdu.resp_buf); |
| done: |
| spin_unlock(&session->back_lock); |
| return 0; |
| } |
| |
| |
| /** |
| * bnx2i_process_text_resp - this function handles iscsi text response |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process iSCSI Text Response CQE& complete it to open-iscsi user daemon |
| */ |
| static int bnx2i_process_text_resp(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct iscsi_task *task; |
| struct bnx2i_text_response *text; |
| struct iscsi_text_rsp *resp_hdr; |
| int pld_len; |
| int pad_len; |
| |
| text = (struct bnx2i_text_response *) cqe; |
| spin_lock(&session->back_lock); |
| task = iscsi_itt_to_task(conn, text->itt & ISCSI_LOGIN_RESPONSE_INDEX); |
| if (!task) |
| goto done; |
| |
| resp_hdr = (struct iscsi_text_rsp *)&bnx2i_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
| resp_hdr->opcode = text->op_code; |
| resp_hdr->flags = text->response_flags; |
| resp_hdr->hlength = 0; |
| |
| hton24(resp_hdr->dlength, text->data_length); |
| resp_hdr->itt = task->hdr->itt; |
| resp_hdr->ttt = cpu_to_be32(text->ttt); |
| resp_hdr->statsn = task->hdr->exp_statsn; |
| resp_hdr->exp_cmdsn = cpu_to_be32(text->exp_cmd_sn); |
| resp_hdr->max_cmdsn = cpu_to_be32(text->max_cmd_sn); |
| pld_len = text->data_length; |
| bnx2i_conn->gen_pdu.resp_wr_ptr = bnx2i_conn->gen_pdu.resp_buf + |
| pld_len; |
| pad_len = 0; |
| if (pld_len & 0x3) |
| pad_len = 4 - (pld_len % 4); |
| |
| if (pad_len) { |
| int i = 0; |
| for (i = 0; i < pad_len; i++) { |
| bnx2i_conn->gen_pdu.resp_wr_ptr[0] = 0; |
| bnx2i_conn->gen_pdu.resp_wr_ptr++; |
| } |
| } |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, |
| bnx2i_conn->gen_pdu.resp_buf, |
| bnx2i_conn->gen_pdu.resp_wr_ptr - |
| bnx2i_conn->gen_pdu.resp_buf); |
| done: |
| spin_unlock(&session->back_lock); |
| return 0; |
| } |
| |
| |
| /** |
| * bnx2i_process_tmf_resp - this function handles iscsi TMF response |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process iSCSI TMF Response CQE and wake up the driver eh thread. |
| */ |
| static int bnx2i_process_tmf_resp(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct iscsi_task *task; |
| struct bnx2i_tmf_response *tmf_cqe; |
| struct iscsi_tm_rsp *resp_hdr; |
| |
| tmf_cqe = (struct bnx2i_tmf_response *)cqe; |
| spin_lock(&session->back_lock); |
| task = iscsi_itt_to_task(conn, |
| tmf_cqe->itt & ISCSI_TMF_RESPONSE_INDEX); |
| if (!task) |
| goto done; |
| |
| resp_hdr = (struct iscsi_tm_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
| resp_hdr->opcode = tmf_cqe->op_code; |
| resp_hdr->max_cmdsn = cpu_to_be32(tmf_cqe->max_cmd_sn); |
| resp_hdr->exp_cmdsn = cpu_to_be32(tmf_cqe->exp_cmd_sn); |
| resp_hdr->itt = task->hdr->itt; |
| resp_hdr->response = tmf_cqe->response; |
| |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); |
| done: |
| spin_unlock(&session->back_lock); |
| return 0; |
| } |
| |
| /** |
| * bnx2i_process_logout_resp - this function handles iscsi logout response |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process iSCSI Logout Response CQE & make function call to |
| * notify the user daemon. |
| */ |
| static int bnx2i_process_logout_resp(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct iscsi_task *task; |
| struct bnx2i_logout_response *logout; |
| struct iscsi_logout_rsp *resp_hdr; |
| |
| logout = (struct bnx2i_logout_response *) cqe; |
| spin_lock(&session->back_lock); |
| task = iscsi_itt_to_task(conn, |
| logout->itt & ISCSI_LOGOUT_RESPONSE_INDEX); |
| if (!task) |
| goto done; |
| |
| resp_hdr = (struct iscsi_logout_rsp *) &bnx2i_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
| resp_hdr->opcode = logout->op_code; |
| resp_hdr->flags = logout->response; |
| resp_hdr->hlength = 0; |
| |
| resp_hdr->itt = task->hdr->itt; |
| resp_hdr->statsn = task->hdr->exp_statsn; |
| resp_hdr->exp_cmdsn = cpu_to_be32(logout->exp_cmd_sn); |
| resp_hdr->max_cmdsn = cpu_to_be32(logout->max_cmd_sn); |
| |
| resp_hdr->t2wait = cpu_to_be32(logout->time_to_wait); |
| resp_hdr->t2retain = cpu_to_be32(logout->time_to_retain); |
| |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)resp_hdr, NULL, 0); |
| |
| bnx2i_conn->ep->state = EP_STATE_LOGOUT_RESP_RCVD; |
| done: |
| spin_unlock(&session->back_lock); |
| return 0; |
| } |
| |
| /** |
| * bnx2i_process_nopin_local_cmpl - this function handles iscsi nopin CQE |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process iSCSI NOPIN local completion CQE, frees IIT and command structures |
| */ |
| static void bnx2i_process_nopin_local_cmpl(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct bnx2i_nop_in_msg *nop_in; |
| struct iscsi_task *task; |
| |
| nop_in = (struct bnx2i_nop_in_msg *)cqe; |
| spin_lock(&session->back_lock); |
| task = iscsi_itt_to_task(conn, |
| nop_in->itt & ISCSI_NOP_IN_MSG_INDEX); |
| if (task) |
| __iscsi_put_task(task); |
| spin_unlock(&session->back_lock); |
| } |
| |
| /** |
| * bnx2i_unsol_pdu_adjust_rq - makes adjustments to RQ after unsol pdu is recvd |
| * @conn: iscsi connection |
| * |
| * Firmware advances RQ producer index for every unsolicited PDU even if |
| * payload data length is '0'. This function makes corresponding |
| * adjustments on the driver side to match this f/w behavior |
| */ |
| static void bnx2i_unsol_pdu_adjust_rq(struct bnx2i_conn *bnx2i_conn) |
| { |
| char dummy_rq_data[2]; |
| bnx2i_get_rq_buf(bnx2i_conn, dummy_rq_data, 1); |
| bnx2i_put_rq_buf(bnx2i_conn, 1); |
| } |
| |
| |
| /** |
| * bnx2i_process_nopin_mesg - this function handles iscsi nopin CQE |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process iSCSI target's proactive iSCSI NOPIN request |
| */ |
| static int bnx2i_process_nopin_mesg(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct iscsi_task *task; |
| struct bnx2i_nop_in_msg *nop_in; |
| struct iscsi_nopin *hdr; |
| int tgt_async_nop = 0; |
| |
| nop_in = (struct bnx2i_nop_in_msg *)cqe; |
| |
| spin_lock(&session->back_lock); |
| hdr = (struct iscsi_nopin *)&bnx2i_conn->gen_pdu.resp_hdr; |
| memset(hdr, 0, sizeof(struct iscsi_hdr)); |
| hdr->opcode = nop_in->op_code; |
| hdr->max_cmdsn = cpu_to_be32(nop_in->max_cmd_sn); |
| hdr->exp_cmdsn = cpu_to_be32(nop_in->exp_cmd_sn); |
| hdr->ttt = cpu_to_be32(nop_in->ttt); |
| |
| if (nop_in->itt == (u16) RESERVED_ITT) { |
| bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); |
| hdr->itt = RESERVED_ITT; |
| tgt_async_nop = 1; |
| goto done; |
| } |
| |
| /* this is a response to one of our nop-outs */ |
| task = iscsi_itt_to_task(conn, |
| (itt_t) (nop_in->itt & ISCSI_NOP_IN_MSG_INDEX)); |
| if (task) { |
| hdr->flags = ISCSI_FLAG_CMD_FINAL; |
| hdr->itt = task->hdr->itt; |
| hdr->ttt = cpu_to_be32(nop_in->ttt); |
| memcpy(&hdr->lun, nop_in->lun, 8); |
| } |
| done: |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, NULL, 0); |
| spin_unlock(&session->back_lock); |
| |
| return tgt_async_nop; |
| } |
| |
| |
| /** |
| * bnx2i_process_async_mesg - this function handles iscsi async message |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process iSCSI ASYNC Message |
| */ |
| static void bnx2i_process_async_mesg(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct bnx2i_async_msg *async_cqe; |
| struct iscsi_async *resp_hdr; |
| u8 async_event; |
| |
| bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); |
| |
| async_cqe = (struct bnx2i_async_msg *)cqe; |
| async_event = async_cqe->async_event; |
| |
| if (async_event == ISCSI_ASYNC_MSG_SCSI_EVENT) { |
| iscsi_conn_printk(KERN_ALERT, bnx2i_conn->cls_conn->dd_data, |
| "async: scsi events not supported\n"); |
| return; |
| } |
| |
| spin_lock(&session->back_lock); |
| resp_hdr = (struct iscsi_async *) &bnx2i_conn->gen_pdu.resp_hdr; |
| memset(resp_hdr, 0, sizeof(struct iscsi_hdr)); |
| resp_hdr->opcode = async_cqe->op_code; |
| resp_hdr->flags = 0x80; |
| |
| memcpy(&resp_hdr->lun, async_cqe->lun, 8); |
| resp_hdr->exp_cmdsn = cpu_to_be32(async_cqe->exp_cmd_sn); |
| resp_hdr->max_cmdsn = cpu_to_be32(async_cqe->max_cmd_sn); |
| |
| resp_hdr->async_event = async_cqe->async_event; |
| resp_hdr->async_vcode = async_cqe->async_vcode; |
| |
| resp_hdr->param1 = cpu_to_be16(async_cqe->param1); |
| resp_hdr->param2 = cpu_to_be16(async_cqe->param2); |
| resp_hdr->param3 = cpu_to_be16(async_cqe->param3); |
| |
| __iscsi_complete_pdu(bnx2i_conn->cls_conn->dd_data, |
| (struct iscsi_hdr *)resp_hdr, NULL, 0); |
| spin_unlock(&session->back_lock); |
| } |
| |
| |
| /** |
| * bnx2i_process_reject_mesg - process iscsi reject pdu |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process iSCSI REJECT message |
| */ |
| static void bnx2i_process_reject_mesg(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct bnx2i_reject_msg *reject; |
| struct iscsi_reject *hdr; |
| |
| reject = (struct bnx2i_reject_msg *) cqe; |
| if (reject->data_length) { |
| bnx2i_get_rq_buf(bnx2i_conn, conn->data, reject->data_length); |
| bnx2i_put_rq_buf(bnx2i_conn, 1); |
| } else |
| bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); |
| |
| spin_lock(&session->back_lock); |
| hdr = (struct iscsi_reject *) &bnx2i_conn->gen_pdu.resp_hdr; |
| memset(hdr, 0, sizeof(struct iscsi_hdr)); |
| hdr->opcode = reject->op_code; |
| hdr->reason = reject->reason; |
| hton24(hdr->dlength, reject->data_length); |
| hdr->max_cmdsn = cpu_to_be32(reject->max_cmd_sn); |
| hdr->exp_cmdsn = cpu_to_be32(reject->exp_cmd_sn); |
| hdr->ffffffff = cpu_to_be32(RESERVED_ITT); |
| __iscsi_complete_pdu(conn, (struct iscsi_hdr *)hdr, conn->data, |
| reject->data_length); |
| spin_unlock(&session->back_lock); |
| } |
| |
| /** |
| * bnx2i_process_cmd_cleanup_resp - process scsi command clean-up completion |
| * @session: iscsi session pointer |
| * @bnx2i_conn: iscsi connection pointer |
| * @cqe: pointer to newly DMA'ed CQE entry for processing |
| * |
| * process command cleanup response CQE during conn shutdown or error recovery |
| */ |
| static void bnx2i_process_cmd_cleanup_resp(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct cqe *cqe) |
| { |
| struct bnx2i_cleanup_response *cmd_clean_rsp; |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct iscsi_task *task; |
| |
| cmd_clean_rsp = (struct bnx2i_cleanup_response *)cqe; |
| spin_lock(&session->back_lock); |
| task = iscsi_itt_to_task(conn, |
| cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); |
| if (!task) |
| printk(KERN_ALERT "bnx2i: cmd clean ITT %x not active\n", |
| cmd_clean_rsp->itt & ISCSI_CLEANUP_RESPONSE_INDEX); |
| spin_unlock(&session->back_lock); |
| complete(&bnx2i_conn->cmd_cleanup_cmpl); |
| } |
| |
| |
| /** |
| * bnx2i_percpu_io_thread - thread per cpu for ios |
| * |
| * @arg: ptr to bnx2i_percpu_info structure |
| */ |
| int bnx2i_percpu_io_thread(void *arg) |
| { |
| struct bnx2i_percpu_s *p = arg; |
| struct bnx2i_work *work, *tmp; |
| LIST_HEAD(work_list); |
| |
| set_user_nice(current, -20); |
| |
| while (!kthread_should_stop()) { |
| spin_lock_bh(&p->p_work_lock); |
| while (!list_empty(&p->work_list)) { |
| list_splice_init(&p->work_list, &work_list); |
| spin_unlock_bh(&p->p_work_lock); |
| |
| list_for_each_entry_safe(work, tmp, &work_list, list) { |
| list_del_init(&work->list); |
| /* work allocated in the bh, freed here */ |
| bnx2i_process_scsi_cmd_resp(work->session, |
| work->bnx2i_conn, |
| &work->cqe); |
| atomic_dec(&work->bnx2i_conn->work_cnt); |
| kfree(work); |
| } |
| spin_lock_bh(&p->p_work_lock); |
| } |
| set_current_state(TASK_INTERRUPTIBLE); |
| spin_unlock_bh(&p->p_work_lock); |
| schedule(); |
| } |
| __set_current_state(TASK_RUNNING); |
| |
| return 0; |
| } |
| |
| |
| /** |
| * bnx2i_queue_scsi_cmd_resp - queue cmd completion to the percpu thread |
| * @bnx2i_conn: bnx2i connection |
| * |
| * this function is called by generic KCQ handler to queue all pending cmd |
| * completion CQEs |
| * |
| * The implementation is to queue the cmd response based on the |
| * last recorded command for the given connection. The |
| * cpu_id gets recorded upon task_xmit. No out-of-order completion! |
| */ |
| static int bnx2i_queue_scsi_cmd_resp(struct iscsi_session *session, |
| struct bnx2i_conn *bnx2i_conn, |
| struct bnx2i_nop_in_msg *cqe) |
| { |
| struct bnx2i_work *bnx2i_work = NULL; |
| struct bnx2i_percpu_s *p = NULL; |
| struct iscsi_task *task; |
| struct scsi_cmnd *sc; |
| int rc = 0; |
| int cpu; |
| |
| spin_lock(&session->back_lock); |
| task = iscsi_itt_to_task(bnx2i_conn->cls_conn->dd_data, |
| cqe->itt & ISCSI_CMD_RESPONSE_INDEX); |
| if (!task || !task->sc) { |
| spin_unlock(&session->back_lock); |
| return -EINVAL; |
| } |
| sc = task->sc; |
| |
| if (!blk_rq_cpu_valid(sc->request)) |
| cpu = smp_processor_id(); |
| else |
| cpu = sc->request->cpu; |
| |
| spin_unlock(&session->back_lock); |
| |
| p = &per_cpu(bnx2i_percpu, cpu); |
| spin_lock(&p->p_work_lock); |
| if (unlikely(!p->iothread)) { |
| rc = -EINVAL; |
| goto err; |
| } |
| /* Alloc and copy to the cqe */ |
| bnx2i_work = kzalloc(sizeof(struct bnx2i_work), GFP_ATOMIC); |
| if (bnx2i_work) { |
| INIT_LIST_HEAD(&bnx2i_work->list); |
| bnx2i_work->session = session; |
| bnx2i_work->bnx2i_conn = bnx2i_conn; |
| memcpy(&bnx2i_work->cqe, cqe, sizeof(struct cqe)); |
| list_add_tail(&bnx2i_work->list, &p->work_list); |
| atomic_inc(&bnx2i_conn->work_cnt); |
| wake_up_process(p->iothread); |
| spin_unlock(&p->p_work_lock); |
| goto done; |
| } else |
| rc = -ENOMEM; |
| err: |
| spin_unlock(&p->p_work_lock); |
| bnx2i_process_scsi_cmd_resp(session, bnx2i_conn, (struct cqe *)cqe); |
| done: |
| return rc; |
| } |
| |
| |
| /** |
| * bnx2i_process_new_cqes - process newly DMA'ed CQE's |
| * @bnx2i_conn: bnx2i connection |
| * |
| * this function is called by generic KCQ handler to process all pending CQE's |
| */ |
| static int bnx2i_process_new_cqes(struct bnx2i_conn *bnx2i_conn) |
| { |
| struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data; |
| struct iscsi_session *session = conn->session; |
| struct bnx2i_hba *hba = bnx2i_conn->hba; |
| struct qp_info *qp; |
| struct bnx2i_nop_in_msg *nopin; |
| int tgt_async_msg; |
| int cqe_cnt = 0; |
| |
| if (bnx2i_conn->ep == NULL) |
| return 0; |
| |
| qp = &bnx2i_conn->ep->qp; |
| |
| if (!qp->cq_virt) { |
| printk(KERN_ALERT "bnx2i (%s): cq resr freed in bh execution!", |
| hba->netdev->name); |
| goto out; |
| } |
| while (1) { |
| nopin = (struct bnx2i_nop_in_msg *) qp->cq_cons_qe; |
| if (nopin->cq_req_sn != qp->cqe_exp_seq_sn) |
| break; |
| |
| if (unlikely(test_bit(ISCSI_SUSPEND_BIT, &conn->suspend_rx))) { |
| if (nopin->op_code == ISCSI_OP_NOOP_IN && |
| nopin->itt == (u16) RESERVED_ITT) { |
| printk(KERN_ALERT "bnx2i: Unsolicited " |
| "NOP-In detected for suspended " |
| "connection dev=%s!\n", |
| hba->netdev->name); |
| bnx2i_unsol_pdu_adjust_rq(bnx2i_conn); |
| goto cqe_out; |
| } |
| break; |
| } |
| tgt_async_msg = 0; |
| |
| switch (nopin->op_code) { |
| case ISCSI_OP_SCSI_CMD_RSP: |
| case ISCSI_OP_SCSI_DATA_IN: |
| /* Run the kthread engine only for data cmds |
| All other cmds will be completed in this bh! */ |
| bnx2i_queue_scsi_cmd_resp(session, bnx2i_conn, nopin); |
| goto done; |
| case ISCSI_OP_LOGIN_RSP: |
| bnx2i_process_login_resp(session, bnx2i_conn, |
| qp->cq_cons_qe); |
| break; |
| case ISCSI_OP_SCSI_TMFUNC_RSP: |
| bnx2i_process_tmf_resp(session, bnx2i_conn, |
| qp->cq_cons_qe); |
| break; |
| case ISCSI_OP_TEXT_RSP: |
| bnx2i_process_text_resp(session, bnx2i_conn, |
| qp->cq_cons_qe); |
| break; |
| case ISCSI_OP_LOGOUT_RSP: |
| bnx2i_process_logout_resp(session, bnx2i_conn, |
| qp->cq_cons_qe); |
| break; |
| case ISCSI_OP_NOOP_IN: |
| if (bnx2i_process_nopin_mesg(session, bnx2i_conn, |
| qp->cq_cons_qe)) |
| tgt_async_msg = 1; |
| break; |
| case ISCSI_OPCODE_NOPOUT_LOCAL_COMPLETION: |
| bnx2i_process_nopin_local_cmpl(session, bnx2i_conn, |
| qp->cq_cons_qe); |
| break; |
| case ISCSI_OP_ASYNC_EVENT: |
| bnx2i_process_async_mesg(session, bnx2i_conn, |
| qp->cq_cons_qe); |
| tgt_async_msg = 1; |
| break; |
| case ISCSI_OP_REJECT: |
| bnx2i_process_reject_mesg(session, bnx2i_conn, |
| qp->cq_cons_qe); |
| break; |
| case ISCSI_OPCODE_CLEANUP_RESPONSE: |
| bnx2i_process_cmd_cleanup_resp(session, bnx2i_conn, |
| qp->cq_cons_qe); |
| break; |
| default: |
| printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", |
| nopin->op_code); |
| } |
| |
| ADD_STATS_64(hba, rx_pdus, 1); |
| ADD_STATS_64(hba, rx_bytes, nopin->data_length); |
| done: |
| if (!tgt_async_msg) { |
| if (!atomic_read(&bnx2i_conn->ep->num_active_cmds)) |
| printk(KERN_ALERT "bnx2i (%s): no active cmd! " |
| "op 0x%x\n", |
| hba->netdev->name, |
| nopin->op_code); |
| else |
| atomic_dec(&bnx2i_conn->ep->num_active_cmds); |
| } |
| cqe_out: |
| /* clear out in production version only, till beta keep opcode |
| * field intact, will be helpful in debugging (context dump) |
| * nopin->op_code = 0; |
| */ |
| cqe_cnt++; |
| qp->cqe_exp_seq_sn++; |
| if (qp->cqe_exp_seq_sn == (qp->cqe_size * 2 + 1)) |
| qp->cqe_exp_seq_sn = ISCSI_INITIAL_SN; |
| |
| if (qp->cq_cons_qe == qp->cq_last_qe) { |
| qp->cq_cons_qe = qp->cq_first_qe; |
| qp->cq_cons_idx = 0; |
| } else { |
| qp->cq_cons_qe++; |
| qp->cq_cons_idx++; |
| } |
| } |
| out: |
| return cqe_cnt; |
| } |
| |
| /** |
| * bnx2i_fastpath_notification - process global event queue (KCQ) |
| * @hba: adapter structure pointer |
| * @new_cqe_kcqe: pointer to newly DMA'ed KCQE entry |
| * |
| * Fast path event notification handler, KCQ entry carries context id |
| * of the connection that has 1 or more pending CQ entries |
| */ |
| static void bnx2i_fastpath_notification(struct bnx2i_hba *hba, |
| struct iscsi_kcqe *new_cqe_kcqe) |
| { |
| struct bnx2i_conn *bnx2i_conn; |
| u32 iscsi_cid; |
| int nxt_idx; |
| |
| iscsi_cid = new_cqe_kcqe->iscsi_conn_id; |
| bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); |
| |
| if (!bnx2i_conn) { |
| printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid); |
| return; |
| } |
| if (!bnx2i_conn->ep) { |
| printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid); |
| return; |
| } |
| |
| bnx2i_process_new_cqes(bnx2i_conn); |
| nxt_idx = bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, |
| CNIC_ARM_CQE_FP); |
| if (nxt_idx && nxt_idx == bnx2i_process_new_cqes(bnx2i_conn)) |
| bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE_FP); |
| } |
| |
| |
| /** |
| * bnx2i_process_update_conn_cmpl - process iscsi conn update completion KCQE |
| * @hba: adapter structure pointer |
| * @update_kcqe: kcqe pointer |
| * |
| * CONN_UPDATE completion handler, this completes iSCSI connection FFP migration |
| */ |
| static void bnx2i_process_update_conn_cmpl(struct bnx2i_hba *hba, |
| struct iscsi_kcqe *update_kcqe) |
| { |
| struct bnx2i_conn *conn; |
| u32 iscsi_cid; |
| |
| iscsi_cid = update_kcqe->iscsi_conn_id; |
| conn = bnx2i_get_conn_from_id(hba, iscsi_cid); |
| |
| if (!conn) { |
| printk(KERN_ALERT "conn_update: cid %x not valid\n", iscsi_cid); |
| return; |
| } |
| if (!conn->ep) { |
| printk(KERN_ALERT "cid %x does not have ep bound\n", iscsi_cid); |
| return; |
| } |
| |
| if (update_kcqe->completion_status) { |
| printk(KERN_ALERT "request failed cid %x\n", iscsi_cid); |
| conn->ep->state = EP_STATE_ULP_UPDATE_FAILED; |
| } else |
| conn->ep->state = EP_STATE_ULP_UPDATE_COMPL; |
| |
| wake_up_interruptible(&conn->ep->ofld_wait); |
| } |
| |
| |
| /** |
| * bnx2i_recovery_que_add_conn - add connection to recovery queue |
| * @hba: adapter structure pointer |
| * @bnx2i_conn: iscsi connection |
| * |
| * Add connection to recovery queue and schedule adapter eh worker |
| */ |
| static void bnx2i_recovery_que_add_conn(struct bnx2i_hba *hba, |
| struct bnx2i_conn *bnx2i_conn) |
| { |
| iscsi_conn_failure(bnx2i_conn->cls_conn->dd_data, |
| ISCSI_ERR_CONN_FAILED); |
| } |
| |
| |
| /** |
| * bnx2i_process_tcp_error - process error notification on a given connection |
| * |
| * @hba: adapter structure pointer |
| * @tcp_err: tcp error kcqe pointer |
| * |
| * handles tcp level error notifications from FW. |
| */ |
| static void bnx2i_process_tcp_error(struct bnx2i_hba *hba, |
| struct iscsi_kcqe *tcp_err) |
| { |
| struct bnx2i_conn *bnx2i_conn; |
| u32 iscsi_cid; |
| |
| iscsi_cid = tcp_err->iscsi_conn_id; |
| bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); |
| |
| if (!bnx2i_conn) { |
| printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); |
| return; |
| } |
| |
| printk(KERN_ALERT "bnx2i - cid 0x%x had TCP errors, error code 0x%x\n", |
| iscsi_cid, tcp_err->completion_status); |
| bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); |
| } |
| |
| |
| /** |
| * bnx2i_process_iscsi_error - process error notification on a given connection |
| * @hba: adapter structure pointer |
| * @iscsi_err: iscsi error kcqe pointer |
| * |
| * handles iscsi error notifications from the FW. Firmware based in initial |
| * handshake classifies iscsi protocol / TCP rfc violation into either |
| * warning or error indications. If indication is of "Error" type, driver |
| * will initiate session recovery for that connection/session. For |
| * "Warning" type indication, driver will put out a system log message |
| * (there will be only one message for each type for the life of the |
| * session, this is to avoid un-necessarily overloading the system) |
| */ |
| static void bnx2i_process_iscsi_error(struct bnx2i_hba *hba, |
| struct iscsi_kcqe *iscsi_err) |
| { |
| struct bnx2i_conn *bnx2i_conn; |
| u32 iscsi_cid; |
| char warn_notice[] = "iscsi_warning"; |
| char error_notice[] = "iscsi_error"; |
| char additional_notice[64]; |
| char *message; |
| int need_recovery; |
| u64 err_mask64; |
| |
| iscsi_cid = iscsi_err->iscsi_conn_id; |
| bnx2i_conn = bnx2i_get_conn_from_id(hba, iscsi_cid); |
| if (!bnx2i_conn) { |
| printk(KERN_ALERT "bnx2i - cid 0x%x not valid\n", iscsi_cid); |
| return; |
| } |
| |
| err_mask64 = (0x1ULL << iscsi_err->completion_status); |
| |
| if (err_mask64 & iscsi_error_mask) { |
| need_recovery = 0; |
| message = warn_notice; |
| } else { |
| need_recovery = 1; |
| message = error_notice; |
| } |
| |
| switch (iscsi_err->completion_status) { |
| case ISCSI_KCQE_COMPLETION_STATUS_HDR_DIG_ERR: |
| strcpy(additional_notice, "hdr digest err"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_DATA_DIG_ERR: |
| strcpy(additional_notice, "data digest err"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_OPCODE: |
| strcpy(additional_notice, "wrong opcode rcvd"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_AHS_LEN: |
| strcpy(additional_notice, "AHS len > 0 rcvd"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ITT: |
| strcpy(additional_notice, "invalid ITT rcvd"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_STATSN: |
| strcpy(additional_notice, "wrong StatSN rcvd"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_EXP_DATASN: |
| strcpy(additional_notice, "wrong DataSN rcvd"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T: |
| strcpy(additional_notice, "pend R2T violation"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_0: |
| strcpy(additional_notice, "ERL0, UO"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_1: |
| strcpy(additional_notice, "ERL0, U1"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_2: |
| strcpy(additional_notice, "ERL0, U2"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_3: |
| strcpy(additional_notice, "ERL0, U3"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_4: |
| strcpy(additional_notice, "ERL0, U4"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_5: |
| strcpy(additional_notice, "ERL0, U5"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_O_U_6: |
| strcpy(additional_notice, "ERL0, U6"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_RCV_LEN: |
| strcpy(additional_notice, "invalid resi len"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_RCV_PDU_LEN: |
| strcpy(additional_notice, "MRDSL violation"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_F_BIT_ZERO: |
| strcpy(additional_notice, "F-bit not set"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_NOT_RSRV: |
| strcpy(additional_notice, "invalid TTT"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATASN: |
| strcpy(additional_notice, "invalid DataSN"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REMAIN_BURST_LEN: |
| strcpy(additional_notice, "burst len violation"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_BUFFER_OFF: |
| strcpy(additional_notice, "buf offset violation"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_LUN: |
| strcpy(additional_notice, "invalid LUN field"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_R2TSN: |
| strcpy(additional_notice, "invalid R2TSN field"); |
| break; |
| #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0 \ |
| ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_0 |
| case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_0: |
| strcpy(additional_notice, "invalid cmd len1"); |
| break; |
| #define BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1 \ |
| ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DESIRED_DATA_TRNS_LEN_1 |
| case BNX2I_ERR_DESIRED_DATA_TRNS_LEN_1: |
| strcpy(additional_notice, "invalid cmd len2"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_EXCEED: |
| strcpy(additional_notice, |
| "pend r2t exceeds MaxOutstandingR2T value"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_TTT_IS_RSRV: |
| strcpy(additional_notice, "TTT is rsvd"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_MAX_BURST_LEN: |
| strcpy(additional_notice, "MBL violation"); |
| break; |
| #define BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO \ |
| ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_DATA_SEG_LEN_NOT_ZERO |
| case BNX2I_ERR_DATA_SEG_LEN_NOT_ZERO: |
| strcpy(additional_notice, "data seg len != 0"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_REJECT_PDU_LEN: |
| strcpy(additional_notice, "reject pdu len error"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_ASYNC_PDU_LEN: |
| strcpy(additional_notice, "async pdu len error"); |
| break; |
| case ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_NOPIN_PDU_LEN: |
| strcpy(additional_notice, "nopin pdu len error"); |
| break; |
| #define BNX2_ERR_PEND_R2T_IN_CLEANUP \ |
| ISCSI_KCQE_COMPLETION_STATUS_PROTOCOL_ERR_PEND_R2T_IN_CLEANUP |
| case BNX2_ERR_PEND_R2T_IN_CLEANUP: |
| strcpy(additional_notice, "pend r2t in cleanup"); |
| break; |
| |
| case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_FRAGMENT: |
| strcpy(additional_notice, "IP fragments rcvd"); |
| break; |
| case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_IP_OPTIONS: |
| strcpy(additional_notice, "IP options error"); |
| break; |
| case ISCI_KCQE_COMPLETION_STATUS_TCP_ERROR_URGENT_FLAG: |
| strcpy(additional_notice, "urgent flag error"); |
| break; |
| default: |
| printk(KERN_ALERT "iscsi_err - unknown err %x\n", |
| iscsi_err->completion_status); |
| } |
| |
| if (need_recovery) { |
| iscsi_conn_printk(KERN_ALERT, |
| bnx2i_conn->cls_conn->dd_data, |
| "bnx2i: %s - %s\n", |
| message, additional_notice); |
| |
| iscsi_conn_printk(KERN_ALERT, |
| bnx2i_conn->cls_conn->dd_data, |
| "conn_err - hostno %d conn %p, " |
| "iscsi_cid %x cid %x\n", |
| bnx2i_conn->hba->shost->host_no, |
| bnx2i_conn, bnx2i_conn->ep->ep_iscsi_cid, |
| bnx2i_conn->ep->ep_cid); |
| bnx2i_recovery_que_add_conn(bnx2i_conn->hba, bnx2i_conn); |
| } else |
| if (!test_and_set_bit(iscsi_err->completion_status, |
| (void *) &bnx2i_conn->violation_notified)) |
| iscsi_conn_printk(KERN_ALERT, |
| bnx2i_conn->cls_conn->dd_data, |
| "bnx2i: %s - %s\n", |
| message, additional_notice); |
| } |
| |
| |
| /** |
| * bnx2i_process_conn_destroy_cmpl - process iscsi conn destroy completion |
| * @hba: adapter structure pointer |
| * @conn_destroy: conn destroy kcqe pointer |
| * |
| * handles connection destroy completion request. |
| */ |
| static void bnx2i_process_conn_destroy_cmpl(struct bnx2i_hba *hba, |
| struct iscsi_kcqe *conn_destroy) |
| { |
| struct bnx2i_endpoint *ep; |
| |
| ep = bnx2i_find_ep_in_destroy_list(hba, conn_destroy->iscsi_conn_id); |
| if (!ep) { |
| printk(KERN_ALERT "bnx2i_conn_destroy_cmpl: no pending " |
| "offload request, unexpected complection\n"); |
| return; |
| } |
| |
| if (hba != ep->hba) { |
| printk(KERN_ALERT "conn destroy- error hba mis-match\n"); |
| return; |
| } |
| |
| if (conn_destroy->completion_status) { |
| printk(KERN_ALERT "conn_destroy_cmpl: op failed\n"); |
| ep->state = EP_STATE_CLEANUP_FAILED; |
| } else |
| ep->state = EP_STATE_CLEANUP_CMPL; |
| wake_up_interruptible(&ep->ofld_wait); |
| } |
| |
| |
| /** |
| * bnx2i_process_ofld_cmpl - process initial iscsi conn offload completion |
| * @hba: adapter structure pointer |
| * @ofld_kcqe: conn offload kcqe pointer |
| * |
| * handles initial connection offload completion, ep_connect() thread is |
| * woken-up to continue with LLP connect process |
| */ |
| static void bnx2i_process_ofld_cmpl(struct bnx2i_hba *hba, |
| struct iscsi_kcqe *ofld_kcqe) |
| { |
| u32 cid_addr; |
| struct bnx2i_endpoint *ep; |
| u32 cid_num; |
| |
| ep = bnx2i_find_ep_in_ofld_list(hba, ofld_kcqe->iscsi_conn_id); |
| if (!ep) { |
| printk(KERN_ALERT "ofld_cmpl: no pend offload request\n"); |
| return; |
| } |
| |
| if (hba != ep->hba) { |
| printk(KERN_ALERT "ofld_cmpl: error hba mis-match\n"); |
| return; |
| } |
| |
| if (ofld_kcqe->completion_status) { |
| ep->state = EP_STATE_OFLD_FAILED; |
| if (ofld_kcqe->completion_status == |
| ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE) |
| printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - unable " |
| "to allocate iSCSI context resources\n", |
| hba->netdev->name); |
| else if (ofld_kcqe->completion_status == |
| ISCSI_KCQE_COMPLETION_STATUS_INVALID_OPCODE) |
| printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " |
| "opcode\n", hba->netdev->name); |
| else if (ofld_kcqe->completion_status == |
| ISCSI_KCQE_COMPLETION_STATUS_CID_BUSY) |
| /* error status code valid only for 5771x chipset */ |
| ep->state = EP_STATE_OFLD_FAILED_CID_BUSY; |
| else |
| printk(KERN_ALERT "bnx2i (%s): ofld1 cmpl - invalid " |
| "error code %d\n", hba->netdev->name, |
| ofld_kcqe->completion_status); |
| } else { |
| ep->state = EP_STATE_OFLD_COMPL; |
| cid_addr = ofld_kcqe->iscsi_conn_context_id; |
| cid_num = bnx2i_get_cid_num(ep); |
| ep->ep_cid = cid_addr; |
| ep->qp.ctx_base = NULL; |
| } |
| wake_up_interruptible(&ep->ofld_wait); |
| } |
| |
| /** |
| * bnx2i_indicate_kcqe - process iscsi conn update completion KCQE |
| * @hba: adapter structure pointer |
| * @update_kcqe: kcqe pointer |
| * |
| * Generic KCQ event handler/dispatcher |
| */ |
| static void bnx2i_indicate_kcqe(void *context, struct kcqe *kcqe[], |
| u32 num_cqe) |
| { |
| struct bnx2i_hba *hba = context; |
| int i = 0; |
| struct iscsi_kcqe *ikcqe = NULL; |
| |
| while (i < num_cqe) { |
| ikcqe = (struct iscsi_kcqe *) kcqe[i++]; |
| |
| if (ikcqe->op_code == |
| ISCSI_KCQE_OPCODE_CQ_EVENT_NOTIFICATION) |
| bnx2i_fastpath_notification(hba, ikcqe); |
| else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_OFFLOAD_CONN) |
| bnx2i_process_ofld_cmpl(hba, ikcqe); |
| else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_UPDATE_CONN) |
| bnx2i_process_update_conn_cmpl(hba, ikcqe); |
| else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_INIT) { |
| if (ikcqe->completion_status != |
| ISCSI_KCQE_COMPLETION_STATUS_SUCCESS) |
| bnx2i_iscsi_license_error(hba, ikcqe->\ |
| completion_status); |
| else { |
| set_bit(ADAPTER_STATE_UP, &hba->adapter_state); |
| bnx2i_get_link_state(hba); |
| printk(KERN_INFO "bnx2i [%.2x:%.2x.%.2x]: " |
| "ISCSI_INIT passed\n", |
| (u8)hba->pcidev->bus->number, |
| hba->pci_devno, |
| (u8)hba->pci_func); |
| |
| |
| } |
| } else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_DESTROY_CONN) |
| bnx2i_process_conn_destroy_cmpl(hba, ikcqe); |
| else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_ISCSI_ERROR) |
| bnx2i_process_iscsi_error(hba, ikcqe); |
| else if (ikcqe->op_code == ISCSI_KCQE_OPCODE_TCP_ERROR) |
| bnx2i_process_tcp_error(hba, ikcqe); |
| else |
| printk(KERN_ALERT "bnx2i: unknown opcode 0x%x\n", |
| ikcqe->op_code); |
| } |
| } |
| |
| |
| /** |
| * bnx2i_indicate_netevent - Generic netdev event handler |
| * @context: adapter structure pointer |
| * @event: event type |
| * @vlan_id: vlans id - associated vlan id with this event |
| * |
| * Handles four netdev events, NETDEV_UP, NETDEV_DOWN, |
| * NETDEV_GOING_DOWN and NETDEV_CHANGE |
| */ |
| static void bnx2i_indicate_netevent(void *context, unsigned long event, |
| u16 vlan_id) |
| { |
| struct bnx2i_hba *hba = context; |
| |
| /* Ignore all netevent coming from vlans */ |
| if (vlan_id != 0) |
| return; |
| |
| switch (event) { |
| case NETDEV_UP: |
| if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) |
| bnx2i_send_fw_iscsi_init_msg(hba); |
| break; |
| case NETDEV_DOWN: |
| clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); |
| clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); |
| break; |
| case NETDEV_GOING_DOWN: |
| set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); |
| iscsi_host_for_each_session(hba->shost, |
| bnx2i_drop_session); |
| break; |
| case NETDEV_CHANGE: |
| bnx2i_get_link_state(hba); |
| break; |
| default: |
| ; |
| } |
| } |
| |
| |
| /** |
| * bnx2i_cm_connect_cmpl - process iscsi conn establishment completion |
| * @cm_sk: cnic sock structure pointer |
| * |
| * function callback exported via bnx2i - cnic driver interface to |
| * indicate completion of option-2 TCP connect request. |
| */ |
| static void bnx2i_cm_connect_cmpl(struct cnic_sock *cm_sk) |
| { |
| struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; |
| |
| if (test_bit(ADAPTER_STATE_GOING_DOWN, &ep->hba->adapter_state)) |
| ep->state = EP_STATE_CONNECT_FAILED; |
| else if (test_bit(SK_F_OFFLD_COMPLETE, &cm_sk->flags)) |
| ep->state = EP_STATE_CONNECT_COMPL; |
| else |
| ep->state = EP_STATE_CONNECT_FAILED; |
| |
| wake_up_interruptible(&ep->ofld_wait); |
| } |
| |
| |
| /** |
| * bnx2i_cm_close_cmpl - process tcp conn close completion |
| * @cm_sk: cnic sock structure pointer |
| * |
| * function callback exported via bnx2i - cnic driver interface to |
| * indicate completion of option-2 graceful TCP connect shutdown |
| */ |
| static void bnx2i_cm_close_cmpl(struct cnic_sock *cm_sk) |
| { |
| struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; |
| |
| ep->state = EP_STATE_DISCONN_COMPL; |
| wake_up_interruptible(&ep->ofld_wait); |
| } |
| |
| |
| /** |
| * bnx2i_cm_abort_cmpl - process abortive tcp conn teardown completion |
| * @cm_sk: cnic sock structure pointer |
| * |
| * function callback exported via bnx2i - cnic driver interface to |
| * indicate completion of option-2 abortive TCP connect termination |
| */ |
| static void bnx2i_cm_abort_cmpl(struct cnic_sock *cm_sk) |
| { |
| struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; |
| |
| ep->state = EP_STATE_DISCONN_COMPL; |
| wake_up_interruptible(&ep->ofld_wait); |
| } |
| |
| |
| /** |
| * bnx2i_cm_remote_close - process received TCP FIN |
| * @hba: adapter structure pointer |
| * @update_kcqe: kcqe pointer |
| * |
| * function callback exported via bnx2i - cnic driver interface to indicate |
| * async TCP events such as FIN |
| */ |
| static void bnx2i_cm_remote_close(struct cnic_sock *cm_sk) |
| { |
| struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; |
| |
| ep->state = EP_STATE_TCP_FIN_RCVD; |
| if (ep->conn) |
| bnx2i_recovery_que_add_conn(ep->hba, ep->conn); |
| } |
| |
| /** |
| * bnx2i_cm_remote_abort - process TCP RST and start conn cleanup |
| * @hba: adapter structure pointer |
| * @update_kcqe: kcqe pointer |
| * |
| * function callback exported via bnx2i - cnic driver interface to |
| * indicate async TCP events (RST) sent by the peer. |
| */ |
| static void bnx2i_cm_remote_abort(struct cnic_sock *cm_sk) |
| { |
| struct bnx2i_endpoint *ep = (struct bnx2i_endpoint *) cm_sk->context; |
| u32 old_state = ep->state; |
| |
| ep->state = EP_STATE_TCP_RST_RCVD; |
| if (old_state == EP_STATE_DISCONN_START) |
| wake_up_interruptible(&ep->ofld_wait); |
| else |
| if (ep->conn) |
| bnx2i_recovery_que_add_conn(ep->hba, ep->conn); |
| } |
| |
| |
| static int bnx2i_send_nl_mesg(void *context, u32 msg_type, |
| char *buf, u16 buflen) |
| { |
| struct bnx2i_hba *hba = context; |
| int rc; |
| |
| if (!hba) |
| return -ENODEV; |
| |
| rc = iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport, |
| msg_type, buf, buflen); |
| if (rc) |
| printk(KERN_ALERT "bnx2i: private nl message send error\n"); |
| |
| return rc; |
| } |
| |
| |
| /** |
| * bnx2i_cnic_cb - global template of bnx2i - cnic driver interface structure |
| * carrying callback function pointers |
| * |
| */ |
| struct cnic_ulp_ops bnx2i_cnic_cb = { |
| .cnic_init = bnx2i_ulp_init, |
| .cnic_exit = bnx2i_ulp_exit, |
| .cnic_start = bnx2i_start, |
| .cnic_stop = bnx2i_stop, |
| .indicate_kcqes = bnx2i_indicate_kcqe, |
| .indicate_netevent = bnx2i_indicate_netevent, |
| .cm_connect_complete = bnx2i_cm_connect_cmpl, |
| .cm_close_complete = bnx2i_cm_close_cmpl, |
| .cm_abort_complete = bnx2i_cm_abort_cmpl, |
| .cm_remote_close = bnx2i_cm_remote_close, |
| .cm_remote_abort = bnx2i_cm_remote_abort, |
| .iscsi_nl_send_msg = bnx2i_send_nl_mesg, |
| .cnic_get_stats = bnx2i_get_stats, |
| .owner = THIS_MODULE |
| }; |
| |
| |
| /** |
| * bnx2i_map_ep_dbell_regs - map connection doorbell registers |
| * @ep: bnx2i endpoint |
| * |
| * maps connection's SQ and RQ doorbell registers, 5706/5708/5709 hosts these |
| * register in BAR #0. Whereas in 57710 these register are accessed by |
| * mapping BAR #1 |
| */ |
| int bnx2i_map_ep_dbell_regs(struct bnx2i_endpoint *ep) |
| { |
| u32 cid_num; |
| u32 reg_off; |
| u32 first_l4l5; |
| u32 ctx_sz; |
| u32 config2; |
| resource_size_t reg_base; |
| |
| cid_num = bnx2i_get_cid_num(ep); |
| |
| if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) { |
| reg_base = pci_resource_start(ep->hba->pcidev, |
| BNX2X_DOORBELL_PCI_BAR); |
| reg_off = (1 << BNX2X_DB_SHIFT) * (cid_num & 0x1FFFF); |
| ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4); |
| goto arm_cq; |
| } |
| |
| if ((test_bit(BNX2I_NX2_DEV_5709, &ep->hba->cnic_dev_type)) && |
| (ep->hba->mail_queue_access == BNX2I_MQ_BIN_MODE)) { |
| config2 = REG_RD(ep->hba, BNX2_MQ_CONFIG2); |
| first_l4l5 = config2 & BNX2_MQ_CONFIG2_FIRST_L4L5; |
| ctx_sz = (config2 & BNX2_MQ_CONFIG2_CONT_SZ) >> 3; |
| if (ctx_sz) |
| reg_off = CTX_OFFSET + MAX_CID_CNT * MB_KERNEL_CTX_SIZE |
| + BNX2I_570X_PAGE_SIZE_DEFAULT * |
| (((cid_num - first_l4l5) / ctx_sz) + 256); |
| else |
| reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); |
| } else |
| /* 5709 device in normal node and 5706/5708 devices */ |
| reg_off = CTX_OFFSET + (MB_KERNEL_CTX_SIZE * cid_num); |
| |
| ep->qp.ctx_base = ioremap_nocache(ep->hba->reg_base + reg_off, |
| MB_KERNEL_CTX_SIZE); |
| if (!ep->qp.ctx_base) |
| return -ENOMEM; |
| |
| arm_cq: |
| bnx2i_arm_cq_event_coalescing(ep, CNIC_ARM_CQE); |
| return 0; |
| } |