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qla2xxx: Add Host reset handling in target mode.
Signed-off-by: Arun Easi <arun.easi@qlogic.com> Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
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4 changed files with 78 additions and 1 deletions
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@ -68,7 +68,7 @@
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* | | | 0xd101-0xd1fe |
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* | | | 0xd214-0xd2fe |
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* | Target Mode | 0xe078 | |
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* | Target Mode Management | 0xf072 | 0xf002-0xf003 |
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* | Target Mode Management | 0xf072 | 0xf002 |
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* | | | 0xf046-0xf049 |
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* | Target Mode Task Management | 0x1000b | |
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* ----------------------------------------------------------------------
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@ -766,4 +766,5 @@ extern void qla82xx_mbx_completion(scsi_qla_host_t *, uint16_t);
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extern int qla8044_abort_isp(scsi_qla_host_t *);
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extern int qla8044_check_fw_alive(struct scsi_qla_host *);
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extern void qlt_host_reset_handler(struct qla_hw_data *ha);
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#endif /* _QLA_GBL_H */
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@ -1363,6 +1363,8 @@ qla2x00_abort_all_cmds(scsi_qla_host_t *vha, int res)
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struct qla_hw_data *ha = vha->hw;
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struct req_que *req;
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qlt_host_reset_handler(ha);
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spin_lock_irqsave(&ha->hardware_lock, flags);
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for (que = 0; que < ha->max_req_queues; que++) {
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req = ha->req_q_map[que];
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@ -2843,6 +2843,80 @@ static struct qla_tgt_cmd *qlt_ctio_to_cmd(struct scsi_qla_host *vha,
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return cmd;
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}
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/* hardware_lock should be held by caller. */
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static void
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qlt_abort_cmd_on_host_reset(struct scsi_qla_host *vha, struct qla_tgt_cmd *cmd)
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{
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struct qla_hw_data *ha = vha->hw;
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uint32_t handle;
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if (cmd->sg_mapped)
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qlt_unmap_sg(vha, cmd);
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handle = qlt_make_handle(vha);
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/* TODO: fix debug message type and ids. */
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if (cmd->state == QLA_TGT_STATE_PROCESSED) {
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ql_dbg(ql_dbg_io, vha, 0xff00,
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"HOST-ABORT: handle=%d, state=PROCESSED.\n", handle);
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} else if (cmd->state == QLA_TGT_STATE_NEED_DATA) {
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cmd->write_data_transferred = 0;
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cmd->state = QLA_TGT_STATE_DATA_IN;
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ql_dbg(ql_dbg_io, vha, 0xff01,
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"HOST-ABORT: handle=%d, state=DATA_IN.\n", handle);
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ha->tgt.tgt_ops->handle_data(cmd);
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return;
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} else if (cmd->state == QLA_TGT_STATE_ABORTED) {
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ql_dbg(ql_dbg_io, vha, 0xff02,
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"HOST-ABORT: handle=%d, state=ABORTED.\n", handle);
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} else {
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ql_dbg(ql_dbg_io, vha, 0xff03,
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"HOST-ABORT: handle=%d, state=BAD(%d).\n", handle,
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cmd->state);
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dump_stack();
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}
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ha->tgt.tgt_ops->free_cmd(cmd);
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}
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void
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qlt_host_reset_handler(struct qla_hw_data *ha)
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{
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struct qla_tgt_cmd *cmd;
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unsigned long flags;
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scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
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scsi_qla_host_t *vha = NULL;
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struct qla_tgt *tgt = base_vha->vha_tgt.qla_tgt;
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uint32_t i;
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if (!base_vha->hw->tgt.tgt_ops)
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return;
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if (!tgt || qla_ini_mode_enabled(base_vha)) {
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xf003,
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"Target mode disabled\n");
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return;
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}
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ql_dbg(ql_dbg_tgt_mgt, vha, 0xff10,
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"HOST-ABORT-HNDLR: base_vha->dpc_flags=%lx.\n",
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base_vha->dpc_flags);
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spin_lock_irqsave(&ha->hardware_lock, flags);
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for (i = 1; i < DEFAULT_OUTSTANDING_COMMANDS + 1; i++) {
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cmd = qlt_get_cmd(base_vha, i);
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if (!cmd)
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continue;
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/* ha->tgt.cmds entry is cleared by qlt_get_cmd. */
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vha = cmd->vha;
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qlt_abort_cmd_on_host_reset(vha, cmd);
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}
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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}
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/*
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* ha->hardware_lock supposed to be held on entry. Might drop it, then reaquire
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*/
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