| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Michael Chan | 10439 | 83.76% | 5 | 11.36% |
| Eddie Wai | 1721 | 13.81% | 19 | 43.18% |
| Barak Witkowsky | 122 | 0.98% | 1 | 2.27% |
| Anil Veerabhadrappa | 96 | 0.77% | 4 | 9.09% |
| Shlomo Pongratz | 23 | 0.18% | 1 | 2.27% |
| Zhouyang Jia | 13 | 0.10% | 1 | 2.27% |
| Kees Cook | 12 | 0.10% | 1 | 2.27% |
| Maxime Jayat | 8 | 0.06% | 1 | 2.27% |
| Jens Axboe | 6 | 0.05% | 1 | 2.27% |
| Gustavo A. R. Silva | 5 | 0.04% | 1 | 2.27% |
| Andy Grover | 4 | 0.03% | 1 | 2.27% |
| Nicholas Bellinger | 4 | 0.03% | 1 | 2.27% |
| Tejun Heo | 3 | 0.02% | 1 | 2.27% |
| Luis R. Rodriguez | 2 | 0.02% | 1 | 2.27% |
| Lucas De Marchi | 1 | 0.01% | 1 | 2.27% |
| Dongsheng Yang | 1 | 0.01% | 1 | 2.27% |
| Tomas Henzl | 1 | 0.01% | 1 | 2.27% |
| Vikas Chaudhary | 1 | 0.01% | 1 | 2.27% |
| Colin Ian King | 1 | 0.01% | 1 | 2.27% |
| Total | 12463 | 44 |
/* bnx2i_hwi.c: QLogic 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 * Copyright (c) 2014, QLogic Corporation * * 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) * Previously Maintained by: Eddie Wai (eddie.wai@broadcom.com) * Maintained by: QLogic-Storage-Upstream@qlogic.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 = CNIC_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 = CNIC_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 = CNIC_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); } } /** * 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); } /** * 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_login_request *login_wqe; struct iscsi_login_req *login_hdr; u32 dword; 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_tmf_request *tmfabort_wqe; u32 dword; u32 scsi_lun[2]; 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_text_request *text_wqe; struct iscsi_text *text_hdr; u32 dword; 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_nop_out_request *nopout_wqe; struct iscsi_nopout *nopout_hdr; 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); /* 57710 requires LUN field to be swapped */ if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) swap(nopout_wqe->lun[0], nopout_wqe->lun[1]); 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_logout_request *logout_wqe; struct iscsi_logout *logout_hdr; 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(struct timer_list *t) { struct bnx2i_endpoint *ep = from_timer(ep, t, ofld_timer); 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 / CNIC_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 += CNIC_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 += CNIC_PAGE_SIZE; } } /* RQ page table */ memset(ep->qp.rq_pgtbl_virt, 0, ep->qp.rq_pgtbl_size); num_pages = ep->qp.rq_mem_size / CNIC_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 += CNIC_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 += CNIC_PAGE_SIZE; } } /* CQ page table */ memset(ep->qp.cq_pgtbl_virt, 0, ep->qp.cq_pgtbl_size); num_pages = ep->qp.cq_mem_size / CNIC_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 += CNIC_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 += CNIC_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 + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; ep->qp.sq_pgtbl_size = (ep->qp.sq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *); ep->qp.sq_pgtbl_size = (ep->qp.sq_pgtbl_size + (CNIC_PAGE_SIZE - 1)) & CNIC_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; } 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 + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; ep->qp.cq_pgtbl_size = (ep->qp.cq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *); ep->qp.cq_pgtbl_size = (ep->qp.cq_pgtbl_size + (CNIC_PAGE_SIZE - 1)) & CNIC_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; } 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 + (CNIC_PAGE_SIZE - 1)) & CNIC_PAGE_MASK; ep->qp.rq_pgtbl_size = (ep->qp.rq_mem_size / CNIC_PAGE_SIZE) * sizeof(void *); ep->qp.rq_pgtbl_size = (ep->qp.rq_pgtbl_size + (CNIC_PAGE_SIZE - 1)) & CNIC_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 = (CNIC_PAGE_BITS - 8) << 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 = CNIC_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(CNIC_PAGE_SIZE / BNX2I_CQE_SIZE); iscsi_init.cq_num_wqes = hba->max_cqes; iscsi_init.cq_num_pages = (hba->max_cqes * BNX2I_CQE_SIZE + (CNIC_PAGE_SIZE - 1)) / CNIC_PAGE_SIZE; iscsi_init.sq_num_pages = (hba->max_sqes * BNX2I_SQ_WQE_SIZE + (CNIC_PAGE_SIZE - 1)) / CNIC_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, MIN_NICE); 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; 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; spin_unlock(&session->back_lock); p = &per_cpu(bnx2i_percpu, blk_mq_rq_cpu(sc->request)); 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 completion\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; 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; 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); if (!ep->qp.ctx_base) return -ENOMEM; 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; }
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1