![Michael Chan](/assets/img/avatar_default.png)
New iSCSI driver for Broadcom BNX2 devices. The driver interfaces with the CNIC driver to access the hardware. Signed-off-by: Anil Veerabhadrappa <anilgv@broadcom.com> Signed-off-by: Michael Chan <mchan@broadcom.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2406 lines
72 KiB
C
2406 lines
72 KiB
C
/* bnx2i_hwi.c: Broadcom NetXtreme II iSCSI driver.
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*
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* Copyright (c) 2006 - 2009 Broadcom Corporation
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* Copyright (c) 2007, 2008 Red Hat, Inc. All rights reserved.
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* Copyright (c) 2007, 2008 Mike Christie
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation.
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*
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* Written by: Anil Veerabhadrappa (anilgv@broadcom.com)
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*/
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#include <scsi/scsi_tcq.h>
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#include <scsi/libiscsi.h>
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#include "bnx2i.h"
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/**
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* bnx2i_get_cid_num - get cid from ep
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* @ep: endpoint pointer
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*
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* Only applicable to 57710 family of devices
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*/
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static u32 bnx2i_get_cid_num(struct bnx2i_endpoint *ep)
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{
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u32 cid;
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if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
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cid = ep->ep_cid;
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else
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cid = GET_CID_NUM(ep->ep_cid);
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return cid;
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}
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/**
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* bnx2i_adjust_qp_size - Adjust SQ/RQ/CQ size for 57710 device type
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* @hba: Adapter for which adjustments is to be made
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*
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* Only applicable to 57710 family of devices
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*/
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static void bnx2i_adjust_qp_size(struct bnx2i_hba *hba)
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{
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u32 num_elements_per_pg;
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if (test_bit(BNX2I_NX2_DEV_5706, &hba->cnic_dev_type) ||
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test_bit(BNX2I_NX2_DEV_5708, &hba->cnic_dev_type) ||
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test_bit(BNX2I_NX2_DEV_5709, &hba->cnic_dev_type)) {
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if (!is_power_of_2(hba->max_sqes))
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hba->max_sqes = rounddown_pow_of_two(hba->max_sqes);
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if (!is_power_of_2(hba->max_rqes))
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hba->max_rqes = rounddown_pow_of_two(hba->max_rqes);
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}
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/* Adjust each queue size if the user selection does not
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* yield integral num of page buffers
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*/
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/* adjust SQ */
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num_elements_per_pg = PAGE_SIZE / BNX2I_SQ_WQE_SIZE;
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if (hba->max_sqes < num_elements_per_pg)
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hba->max_sqes = num_elements_per_pg;
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else if (hba->max_sqes % num_elements_per_pg)
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hba->max_sqes = (hba->max_sqes + num_elements_per_pg - 1) &
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~(num_elements_per_pg - 1);
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/* adjust CQ */
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num_elements_per_pg = PAGE_SIZE / BNX2I_CQE_SIZE;
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if (hba->max_cqes < num_elements_per_pg)
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hba->max_cqes = num_elements_per_pg;
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else if (hba->max_cqes % num_elements_per_pg)
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hba->max_cqes = (hba->max_cqes + num_elements_per_pg - 1) &
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~(num_elements_per_pg - 1);
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/* adjust RQ */
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num_elements_per_pg = PAGE_SIZE / BNX2I_RQ_WQE_SIZE;
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if (hba->max_rqes < num_elements_per_pg)
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hba->max_rqes = num_elements_per_pg;
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else if (hba->max_rqes % num_elements_per_pg)
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hba->max_rqes = (hba->max_rqes + num_elements_per_pg - 1) &
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~(num_elements_per_pg - 1);
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}
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/**
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* bnx2i_get_link_state - get network interface link state
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* @hba: adapter instance pointer
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*
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* updates adapter structure flag based on netdev state
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*/
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static void bnx2i_get_link_state(struct bnx2i_hba *hba)
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{
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if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state))
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set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
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else
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clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state);
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}
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/**
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* bnx2i_iscsi_license_error - displays iscsi license related error message
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* @hba: adapter instance pointer
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* @error_code: error classification
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*
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* Puts out an error log when driver is unable to offload iscsi connection
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* due to license restrictions
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*/
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static void bnx2i_iscsi_license_error(struct bnx2i_hba *hba, u32 error_code)
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{
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if (error_code == ISCSI_KCQE_COMPLETION_STATUS_ISCSI_NOT_SUPPORTED)
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/* iSCSI offload not supported on this device */
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printk(KERN_ERR "bnx2i: iSCSI not supported, dev=%s\n",
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hba->netdev->name);
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if (error_code == ISCSI_KCQE_COMPLETION_STATUS_LOM_ISCSI_NOT_ENABLED)
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/* iSCSI offload not supported on this LOM device */
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printk(KERN_ERR "bnx2i: LOM is not enable to "
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"offload iSCSI connections, dev=%s\n",
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hba->netdev->name);
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set_bit(ADAPTER_STATE_INIT_FAILED, &hba->adapter_state);
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}
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/**
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* bnx2i_arm_cq_event_coalescing - arms CQ to enable EQ notification
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* @ep: endpoint (transport indentifier) structure
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* @action: action, ARM or DISARM. For now only ARM_CQE is used
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*
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* Arm'ing CQ will enable chip to generate global EQ events inorder to interrupt
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* the driver. EQ event is generated CQ index is hit or at least 1 CQ is
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* outstanding and on chip timer expires
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*/
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void bnx2i_arm_cq_event_coalescing(struct bnx2i_endpoint *ep, u8 action)
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{
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struct bnx2i_5771x_cq_db *cq_db;
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u16 cq_index;
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if (!test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type))
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return;
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if (action == CNIC_ARM_CQE) {
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cq_index = ep->qp.cqe_exp_seq_sn +
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ep->num_active_cmds / event_coal_div;
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cq_index %= (ep->qp.cqe_size * 2 + 1);
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if (!cq_index) {
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cq_index = 1;
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cq_db = (struct bnx2i_5771x_cq_db *)
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ep->qp.cq_pgtbl_virt;
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cq_db->sqn[0] = cq_index;
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}
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}
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}
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/**
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* bnx2i_get_rq_buf - copy RQ buffer contents to driver buffer
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* @conn: iscsi connection on which RQ event occured
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* @ptr: driver buffer to which RQ buffer contents is to
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* be copied
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* @len: length of valid data inside RQ buf
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*
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* Copies RQ buffer contents from shared (DMA'able) memory region to
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* driver buffer. RQ is used to DMA unsolicitated iscsi pdu's and
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* scsi sense info
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*/
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void bnx2i_get_rq_buf(struct bnx2i_conn *bnx2i_conn, char *ptr, int len)
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{
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if (!bnx2i_conn->ep->qp.rqe_left)
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return;
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bnx2i_conn->ep->qp.rqe_left--;
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memcpy(ptr, (u8 *) bnx2i_conn->ep->qp.rq_cons_qe, len);
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if (bnx2i_conn->ep->qp.rq_cons_qe == bnx2i_conn->ep->qp.rq_last_qe) {
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bnx2i_conn->ep->qp.rq_cons_qe = bnx2i_conn->ep->qp.rq_first_qe;
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bnx2i_conn->ep->qp.rq_cons_idx = 0;
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} else {
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bnx2i_conn->ep->qp.rq_cons_qe++;
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bnx2i_conn->ep->qp.rq_cons_idx++;
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}
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}
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static void bnx2i_ring_577xx_doorbell(struct bnx2i_conn *conn)
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{
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struct bnx2i_5771x_dbell dbell;
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u32 msg;
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memset(&dbell, 0, sizeof(dbell));
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dbell.dbell.header = (B577XX_ISCSI_CONNECTION_TYPE <<
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B577XX_DOORBELL_HDR_CONN_TYPE_SHIFT);
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msg = *((u32 *)&dbell);
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/* TODO : get doorbell register mapping */
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writel(cpu_to_le32(msg), conn->ep->qp.ctx_base);
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}
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/**
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* bnx2i_put_rq_buf - Replenish RQ buffer, if required ring on chip doorbell
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* @conn: iscsi connection on which event to post
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* @count: number of RQ buffer being posted to chip
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*
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* No need to ring hardware doorbell for 57710 family of devices
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*/
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void bnx2i_put_rq_buf(struct bnx2i_conn *bnx2i_conn, int count)
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{
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struct bnx2i_5771x_sq_rq_db *rq_db;
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u16 hi_bit = (bnx2i_conn->ep->qp.rq_prod_idx & 0x8000);
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struct bnx2i_endpoint *ep = bnx2i_conn->ep;
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ep->qp.rqe_left += count;
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ep->qp.rq_prod_idx &= 0x7FFF;
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ep->qp.rq_prod_idx += count;
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if (ep->qp.rq_prod_idx > bnx2i_conn->hba->max_rqes) {
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ep->qp.rq_prod_idx %= bnx2i_conn->hba->max_rqes;
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if (!hi_bit)
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ep->qp.rq_prod_idx |= 0x8000;
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} else
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ep->qp.rq_prod_idx |= hi_bit;
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if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
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rq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.rq_pgtbl_virt;
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rq_db->prod_idx = ep->qp.rq_prod_idx;
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/* no need to ring hardware doorbell for 57710 */
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} else {
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writew(ep->qp.rq_prod_idx,
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ep->qp.ctx_base + CNIC_RECV_DOORBELL);
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}
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mmiowb();
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}
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/**
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* bnx2i_ring_sq_dbell - Ring SQ doorbell to wake-up the processing engine
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* @conn: iscsi connection to which new SQ entries belong
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* @count: number of SQ WQEs to post
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*
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* SQ DB is updated in host memory and TX Doorbell is rung for 57710 family
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* of devices. For 5706/5708/5709 new SQ WQE count is written into the
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* doorbell register
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*/
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static void bnx2i_ring_sq_dbell(struct bnx2i_conn *bnx2i_conn, int count)
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{
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struct bnx2i_5771x_sq_rq_db *sq_db;
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struct bnx2i_endpoint *ep = bnx2i_conn->ep;
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ep->num_active_cmds++;
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wmb(); /* flush SQ WQE memory before the doorbell is rung */
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if (test_bit(BNX2I_NX2_DEV_57710, &ep->hba->cnic_dev_type)) {
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sq_db = (struct bnx2i_5771x_sq_rq_db *) ep->qp.sq_pgtbl_virt;
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sq_db->prod_idx = ep->qp.sq_prod_idx;
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bnx2i_ring_577xx_doorbell(bnx2i_conn);
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} else
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writew(count, ep->qp.ctx_base + CNIC_SEND_DOORBELL);
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mmiowb(); /* flush posted PCI writes */
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}
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/**
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* bnx2i_ring_dbell_update_sq_params - update SQ driver parameters
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* @conn: iscsi connection to which new SQ entries belong
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* @count: number of SQ WQEs to post
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*
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* this routine will update SQ driver parameters and ring the doorbell
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*/
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static void bnx2i_ring_dbell_update_sq_params(struct bnx2i_conn *bnx2i_conn,
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int count)
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{
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int tmp_cnt;
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if (count == 1) {
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if (bnx2i_conn->ep->qp.sq_prod_qe ==
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bnx2i_conn->ep->qp.sq_last_qe)
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bnx2i_conn->ep->qp.sq_prod_qe =
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bnx2i_conn->ep->qp.sq_first_qe;
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else
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bnx2i_conn->ep->qp.sq_prod_qe++;
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} else {
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if ((bnx2i_conn->ep->qp.sq_prod_qe + count) <=
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bnx2i_conn->ep->qp.sq_last_qe)
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bnx2i_conn->ep->qp.sq_prod_qe += count;
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else {
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tmp_cnt = bnx2i_conn->ep->qp.sq_last_qe -
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bnx2i_conn->ep->qp.sq_prod_qe;
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bnx2i_conn->ep->qp.sq_prod_qe =
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&bnx2i_conn->ep->qp.sq_first_qe[count -
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(tmp_cnt + 1)];
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}
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}
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bnx2i_conn->ep->qp.sq_prod_idx += count;
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/* Ring the doorbell */
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bnx2i_ring_sq_dbell(bnx2i_conn, bnx2i_conn->ep->qp.sq_prod_idx);
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}
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/**
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* bnx2i_send_iscsi_login - post iSCSI login request MP WQE to hardware
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* @conn: iscsi connection
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* @cmd: driver command structure which is requesting
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* a WQE to sent to chip for further processing
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*
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* prepare and post an iSCSI Login request WQE to CNIC firmware
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*/
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int bnx2i_send_iscsi_login(struct bnx2i_conn *bnx2i_conn,
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struct iscsi_task *task)
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{
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struct bnx2i_cmd *bnx2i_cmd;
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struct bnx2i_login_request *login_wqe;
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struct iscsi_login *login_hdr;
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u32 dword;
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bnx2i_cmd = (struct bnx2i_cmd *)task->dd_data;
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login_hdr = (struct iscsi_login *)task->hdr;
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login_wqe = (struct bnx2i_login_request *)
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bnx2i_conn->ep->qp.sq_prod_qe;
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login_wqe->op_code = login_hdr->opcode;
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login_wqe->op_attr = login_hdr->flags;
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login_wqe->version_max = login_hdr->max_version;
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login_wqe->version_min = login_hdr->min_version;
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login_wqe->data_length = ntoh24(login_hdr->dlength);
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login_wqe->isid_lo = *((u32 *) login_hdr->isid);
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login_wqe->isid_hi = *((u16 *) login_hdr->isid + 2);
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login_wqe->tsih = login_hdr->tsih;
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login_wqe->itt = task->itt |
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(ISCSI_TASK_TYPE_MPATH << ISCSI_LOGIN_REQUEST_TYPE_SHIFT);
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login_wqe->cid = login_hdr->cid;
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login_wqe->cmd_sn = be32_to_cpu(login_hdr->cmdsn);
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login_wqe->exp_stat_sn = be32_to_cpu(login_hdr->exp_statsn);
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login_wqe->resp_bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.resp_bd_dma;
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login_wqe->resp_bd_list_addr_hi =
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(u32) ((u64) bnx2i_conn->gen_pdu.resp_bd_dma >> 32);
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dword = ((1 << ISCSI_LOGIN_REQUEST_NUM_RESP_BDS_SHIFT) |
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(bnx2i_conn->gen_pdu.resp_buf_size <<
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ISCSI_LOGIN_REQUEST_RESP_BUFFER_LENGTH_SHIFT));
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login_wqe->resp_buffer = dword;
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login_wqe->flags = 0;
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login_wqe->bd_list_addr_lo = (u32) bnx2i_conn->gen_pdu.req_bd_dma;
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login_wqe->bd_list_addr_hi =
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(u32) ((u64) bnx2i_conn->gen_pdu.req_bd_dma >> 32);
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login_wqe->num_bds = 1;
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login_wqe->cq_index = 0; /* CQ# used for completion, 5771x only */
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bnx2i_ring_dbell_update_sq_params(bnx2i_conn, 1);
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return 0;
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}
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/**
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* bnx2i_send_iscsi_tmf - post iSCSI task management request MP WQE to hardware
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* @conn: iscsi connection
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* @mtask: driver command structure which is requesting
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* a WQE to sent to chip for further processing
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*
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* prepare and post an iSCSI Login request WQE to CNIC firmware
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*/
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int bnx2i_send_iscsi_tmf(struct bnx2i_conn *bnx2i_conn,
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struct iscsi_task *mtask)
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{
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struct iscsi_conn *conn = bnx2i_conn->cls_conn->dd_data;
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struct iscsi_tm *tmfabort_hdr;
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struct scsi_cmnd *ref_sc;
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struct iscsi_task *ctask;
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struct bnx2i_cmd *bnx2i_cmd;
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struct bnx2i_tmf_request *tmfabort_wqe;
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u32 dword;
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bnx2i_cmd = (struct bnx2i_cmd *)mtask->dd_data;
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tmfabort_hdr = (struct iscsi_tm *)mtask->hdr;
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tmfabort_wqe = (struct bnx2i_tmf_request *)
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bnx2i_conn->ep->qp.sq_prod_qe;
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tmfabort_wqe->op_code = tmfabort_hdr->opcode;
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tmfabort_wqe->op_attr = 0;
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tmfabort_wqe->op_attr =
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ISCSI_TMF_REQUEST_ALWAYS_ONE | ISCSI_TM_FUNC_ABORT_TASK;
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tmfabort_wqe->lun[0] = be32_to_cpu(tmfabort_hdr->lun[0]);
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tmfabort_wqe->lun[1] = be32_to_cpu(tmfabort_hdr->lun[1]);
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tmfabort_wqe->itt = (mtask->itt | (ISCSI_TASK_TYPE_MPATH << 14));
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tmfabort_wqe->reserved2 = 0;
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tmfabort_wqe->cmd_sn = be32_to_cpu(tmfabort_hdr->cmdsn);
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ctask = iscsi_itt_to_task(conn, tmfabort_hdr->rtt);
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if (!ctask || ctask->sc)
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/*
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* the iscsi layer must have completed the cmd while this
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* was starting up.
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*/
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return 0;
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ref_sc = ctask->sc;
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if (ref_sc->sc_data_direction == DMA_TO_DEVICE)
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dword = (ISCSI_TASK_TYPE_WRITE << ISCSI_CMD_REQUEST_TYPE_SHIFT);
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else
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dword = (ISCSI_TASK_TYPE_READ << ISCSI_CMD_REQUEST_TYPE_SHIFT);
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tmfabort_wqe->ref_itt = (dword | tmfabort_hdr->rtt);
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tmfabort_wqe->ref_cmd_sn = be32_to_cpu(tmfabort_hdr->refcmdsn);
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|
|
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_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
|
|
* @ttt: TTT to be used when building pdu header
|
|
* @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, u32 ttt,
|
|
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;
|
|
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_hdr->lun[0];
|
|
/* 57710 requires LUN field to be swapped */
|
|
nopout_hdr->lun[0] = nopout_hdr->lun[1];
|
|
nopout_hdr->lun[1] = tmp;
|
|
}
|
|
|
|
nopout_wqe->itt = ((u16)task->itt |
|
|
(ISCSI_TASK_TYPE_MPATH <<
|
|
ISCSI_TMF_REQUEST_TYPE_SHIFT));
|
|
nopout_wqe->ttt = 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_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 indentifier) structure
|
|
*
|
|
* this routine prepares and posts CONN_OFLD_REQ1/2 KWQE to initiate
|
|
* iscsi connection context clean-up process
|
|
*/
|
|
void bnx2i_send_conn_destroy(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
|
|
{
|
|
struct kwqe *kwqe_arr[2];
|
|
struct iscsi_kwqe_conn_destroy conn_cleanup;
|
|
|
|
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)
|
|
hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, 1);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_570x_send_conn_ofld_req - initiates iscsi conn context setup process
|
|
* @hba: adapter structure pointer
|
|
* @ep: endpoint (transport indentifier) structure
|
|
*
|
|
* 5706/5708/5709 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE
|
|
*/
|
|
static void 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;
|
|
|
|
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)
|
|
hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
|
|
}
|
|
|
|
|
|
/**
|
|
* bnx2i_5771x_send_conn_ofld_req - initiates iscsi connection context creation
|
|
* @hba: adapter structure pointer
|
|
* @ep: endpoint (transport indentifier) structure
|
|
*
|
|
* 57710 specific - prepares and posts CONN_OFLD_REQ1/2 KWQE
|
|
*/
|
|
static void 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;
|
|
|
|
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)
|
|
hba->cnic->submit_kwqes(hba->cnic, kwqe_arr, num_kwqes);
|
|
}
|
|
|
|
/**
|
|
* bnx2i_send_conn_ofld_req - initiates iscsi connection context setup process
|
|
*
|
|
* @hba: adapter structure pointer
|
|
* @ep: endpoint (transport indentifier) structure
|
|
*
|
|
* this routine prepares and posts CONN_OFLD_REQ1/2 KWQE
|
|
*/
|
|
void bnx2i_send_conn_ofld_req(struct bnx2i_hba *hba, struct bnx2i_endpoint *ep)
|
|
{
|
|
if (test_bit(BNX2I_NX2_DEV_57710, &hba->cnic_dev_type))
|
|
bnx2i_5771x_send_conn_ofld_req(hba, ep);
|
|
else
|
|
bnx2i_570x_send_conn_ofld_req(hba, ep);
|
|
}
|
|
|
|
|
|
/**
|
|
* setup_qp_page_tables - iscsi QP page table setup function
|
|
* @ep: endpoint (transport indentifier) 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 indentifier) 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 indentifier) 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;
|
|
|
|
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->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;
|
|
else
|
|
iscsi_init2.error_bit_map[0] = (u32) mask64;
|
|
|
|
if (error_mask2)
|
|
iscsi_init2.error_bit_map[1] = error_mask2;
|
|
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.
|
|
* @conn: iscsi connection
|
|
* @cqe: pointer to newly DMA'ed CQE entry for processing
|
|
*
|
|
* process SCSI CMD Response CQE & complete the request to SCSI-ML
|
|
*/
|
|
static 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_cmd_response *resp_cqe;
|
|
struct bnx2i_cmd *bnx2i_cmd;
|
|
struct iscsi_task *task;
|
|
struct iscsi_cmd_rsp *hdr;
|
|
u32 datalen = 0;
|
|
|
|
resp_cqe = (struct bnx2i_cmd_response *)cqe;
|
|
spin_lock(&session->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_outs;
|
|
conn->rxdata_octets +=
|
|
bnx2i_cmd->req.total_data_transfer_length;
|
|
} else {
|
|
conn->dataout_pdus_cnt +=
|
|
resp_cqe->task_stat.read_stat.num_data_outs;
|
|
conn->r2t_pdus_cnt +=
|
|
resp_cqe->task_stat.read_stat.num_r2ts;
|
|
conn->txdata_octets +=
|
|
bnx2i_cmd->req.total_data_transfer_length;
|
|
}
|
|
bnx2i_iscsi_unmap_sg_list(bnx2i_cmd);
|
|
|
|
hdr = (struct iscsi_cmd_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(&session->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->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->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->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->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->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);
|
|
done:
|
|
spin_unlock(&session->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->lock);
|
|
task = iscsi_itt_to_task(conn,
|
|
nop_in->itt & ISCSI_NOP_IN_MSG_INDEX);
|
|
if (task)
|
|
iscsi_put_task(task);
|
|
spin_unlock(&session->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;
|
|
u32 itt;
|
|
int tgt_async_nop = 0;
|
|
|
|
nop_in = (struct bnx2i_nop_in_msg *)cqe;
|
|
itt = nop_in->itt & ISCSI_NOP_IN_MSG_INDEX;
|
|
|
|
spin_lock(&session->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 (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);
|
|
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->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->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->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->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->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->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->lock);
|
|
complete(&bnx2i_conn->cmd_cleanup_cmpl);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* bnx2i_process_new_cqes - process newly DMA'ed CQE's
|
|
* @bnx2i_conn: iscsi connection
|
|
*
|
|
* this function is called by generic KCQ handler to process all pending CQE's
|
|
*/
|
|
static void 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 qp_info *qp = &bnx2i_conn->ep->qp;
|
|
struct bnx2i_nop_in_msg *nopin;
|
|
int tgt_async_msg;
|
|
|
|
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)))
|
|
break;
|
|
|
|
tgt_async_msg = 0;
|
|
|
|
switch (nopin->op_code) {
|
|
case ISCSI_OP_SCSI_CMD_RSP:
|
|
case ISCSI_OP_SCSI_DATA_IN:
|
|
bnx2i_process_scsi_cmd_resp(session, bnx2i_conn,
|
|
qp->cq_cons_qe);
|
|
break;
|
|
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_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);
|
|
}
|
|
|
|
if (!tgt_async_msg)
|
|
bnx2i_conn->ep->num_active_cmds--;
|
|
|
|
/* clear out in production version only, till beta keep opcode
|
|
* field intact, will be helpful in debugging (context dump)
|
|
* nopin->op_code = 0;
|
|
*/
|
|
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++;
|
|
}
|
|
}
|
|
bnx2i_arm_cq_event_coalescing(bnx2i_conn->ep, CNIC_ARM_CQE);
|
|
}
|
|
|
|
/**
|
|
* 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 *conn;
|
|
u32 iscsi_cid;
|
|
|
|
iscsi_cid = new_cqe_kcqe->iscsi_conn_id;
|
|
conn = bnx2i_get_conn_from_id(hba, iscsi_cid);
|
|
|
|
if (!conn) {
|
|
printk(KERN_ALERT "cid #%x not valid\n", iscsi_cid);
|
|
return;
|
|
}
|
|
if (!conn->ep) {
|
|
printk(KERN_ALERT "cid #%x - ep not bound\n", iscsi_cid);
|
|
return;
|
|
}
|
|
|
|
bnx2i_process_new_cqes(conn);
|
|
}
|
|
|
|
|
|
/**
|
|
* 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) {
|
|
if (ofld_kcqe->completion_status ==
|
|
ISCSI_KCQE_COMPLETION_STATUS_CTX_ALLOC_FAILURE)
|
|
printk(KERN_ALERT "bnx2i: unable to allocate"
|
|
" iSCSI context resources\n");
|
|
ep->state = EP_STATE_OFLD_FAILED;
|
|
} 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
|
|
*
|
|
* Handles four netdev events, NETDEV_UP, NETDEV_DOWN,
|
|
* NETDEV_GOING_DOWN and NETDEV_CHANGE
|
|
*/
|
|
static void bnx2i_indicate_netevent(void *context, unsigned long event)
|
|
{
|
|
struct bnx2i_hba *hba = context;
|
|
|
|
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;
|
|
|
|
ep->state = EP_STATE_TCP_RST_RCVD;
|
|
if (ep->conn)
|
|
bnx2i_recovery_que_add_conn(ep->hba, ep->conn);
|
|
}
|
|
|
|
|
|
static void bnx2i_send_nl_mesg(struct cnic_dev *dev, u32 msg_type,
|
|
char *buf, u16 buflen)
|
|
{
|
|
struct bnx2i_hba *hba;
|
|
|
|
hba = bnx2i_find_hba_for_cnic(dev);
|
|
if (!hba)
|
|
return;
|
|
|
|
if (iscsi_offload_mesg(hba->shost, &bnx2i_iscsi_transport,
|
|
msg_type, buf, buflen))
|
|
printk(KERN_ALERT "bnx2i: private nl message send error\n");
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* 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,
|
|
.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 = PAGE_SIZE * (cid_num & 0x1FFFF) + DPM_TRIGER_TYPE;
|
|
ep->qp.ctx_base = ioremap_nocache(reg_base + reg_off, 4);
|
|
goto arm_cq;
|
|
}
|
|
|
|
reg_base = ep->hba->netdev->base_addr;
|
|
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
|
|
+ PAGE_SIZE *
|
|
(((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(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;
|
|
}
|