715 строки
20 KiB
C
715 строки
20 KiB
C
/*
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* Aic94xx Task Management Functions
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*
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* Copyright (C) 2005 Adaptec, Inc. All rights reserved.
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* Copyright (C) 2005 Luben Tuikov <luben_tuikov@adaptec.com>
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*
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* This file is licensed under GPLv2.
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*
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* This file is part of the aic94xx driver.
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*
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* The aic94xx driver is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of the
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* License.
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*
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* The aic94xx driver is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the aic94xx driver; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include <linux/spinlock.h>
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#include <linux/gfp.h>
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#include "aic94xx.h"
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#include "aic94xx_sas.h"
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#include "aic94xx_hwi.h"
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/* ---------- Internal enqueue ---------- */
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static int asd_enqueue_internal(struct asd_ascb *ascb,
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void (*tasklet_complete)(struct asd_ascb *,
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struct done_list_struct *),
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void (*timed_out)(unsigned long))
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{
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int res;
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ascb->tasklet_complete = tasklet_complete;
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ascb->uldd_timer = 1;
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ascb->timer.data = (unsigned long) ascb;
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ascb->timer.function = timed_out;
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ascb->timer.expires = jiffies + AIC94XX_SCB_TIMEOUT;
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add_timer(&ascb->timer);
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res = asd_post_ascb_list(ascb->ha, ascb, 1);
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if (unlikely(res))
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del_timer(&ascb->timer);
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return res;
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}
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/* ---------- CLEAR NEXUS ---------- */
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struct tasklet_completion_status {
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int dl_opcode;
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int tmf_state;
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u8 tag_valid:1;
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__be16 tag;
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};
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#define DECLARE_TCS(tcs) \
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struct tasklet_completion_status tcs = { \
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.dl_opcode = 0, \
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.tmf_state = 0, \
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.tag_valid = 0, \
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.tag = 0, \
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}
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static void asd_clear_nexus_tasklet_complete(struct asd_ascb *ascb,
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struct done_list_struct *dl)
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{
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struct tasklet_completion_status *tcs = ascb->uldd_task;
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ASD_DPRINTK("%s: here\n", __func__);
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if (!del_timer(&ascb->timer)) {
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ASD_DPRINTK("%s: couldn't delete timer\n", __func__);
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return;
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}
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ASD_DPRINTK("%s: opcode: 0x%x\n", __func__, dl->opcode);
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tcs->dl_opcode = dl->opcode;
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complete(ascb->completion);
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asd_ascb_free(ascb);
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}
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static void asd_clear_nexus_timedout(unsigned long data)
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{
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struct asd_ascb *ascb = (void *)data;
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struct tasklet_completion_status *tcs = ascb->uldd_task;
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ASD_DPRINTK("%s: here\n", __func__);
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tcs->dl_opcode = TMF_RESP_FUNC_FAILED;
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complete(ascb->completion);
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}
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#define CLEAR_NEXUS_PRE \
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struct asd_ascb *ascb; \
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struct scb *scb; \
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int res; \
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DECLARE_COMPLETION_ONSTACK(completion); \
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DECLARE_TCS(tcs); \
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\
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ASD_DPRINTK("%s: PRE\n", __func__); \
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res = 1; \
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ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); \
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if (!ascb) \
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return -ENOMEM; \
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\
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ascb->completion = &completion; \
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ascb->uldd_task = &tcs; \
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scb = ascb->scb; \
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scb->header.opcode = CLEAR_NEXUS
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#define CLEAR_NEXUS_POST \
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ASD_DPRINTK("%s: POST\n", __func__); \
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res = asd_enqueue_internal(ascb, asd_clear_nexus_tasklet_complete, \
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asd_clear_nexus_timedout); \
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if (res) \
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goto out_err; \
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ASD_DPRINTK("%s: clear nexus posted, waiting...\n", __func__); \
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wait_for_completion(&completion); \
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res = tcs.dl_opcode; \
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if (res == TC_NO_ERROR) \
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res = TMF_RESP_FUNC_COMPLETE; \
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return res; \
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out_err: \
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asd_ascb_free(ascb); \
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return res
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int asd_clear_nexus_ha(struct sas_ha_struct *sas_ha)
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{
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struct asd_ha_struct *asd_ha = sas_ha->lldd_ha;
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CLEAR_NEXUS_PRE;
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scb->clear_nexus.nexus = NEXUS_ADAPTER;
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CLEAR_NEXUS_POST;
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}
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int asd_clear_nexus_port(struct asd_sas_port *port)
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{
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struct asd_ha_struct *asd_ha = port->ha->lldd_ha;
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CLEAR_NEXUS_PRE;
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scb->clear_nexus.nexus = NEXUS_PORT;
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scb->clear_nexus.conn_mask = port->phy_mask;
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CLEAR_NEXUS_POST;
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}
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enum clear_nexus_phase {
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NEXUS_PHASE_PRE,
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NEXUS_PHASE_POST,
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NEXUS_PHASE_RESUME,
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};
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static int asd_clear_nexus_I_T(struct domain_device *dev,
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enum clear_nexus_phase phase)
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{
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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CLEAR_NEXUS_PRE;
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scb->clear_nexus.nexus = NEXUS_I_T;
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switch (phase) {
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case NEXUS_PHASE_PRE:
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scb->clear_nexus.flags = EXEC_Q | SUSPEND_TX;
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break;
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case NEXUS_PHASE_POST:
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scb->clear_nexus.flags = SEND_Q | NOTINQ;
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break;
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case NEXUS_PHASE_RESUME:
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scb->clear_nexus.flags = RESUME_TX;
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}
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scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
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dev->lldd_dev);
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CLEAR_NEXUS_POST;
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}
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int asd_I_T_nexus_reset(struct domain_device *dev)
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{
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int res, tmp_res, i;
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struct sas_phy *phy = sas_get_local_phy(dev);
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/* Standard mandates link reset for ATA (type 0) and
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* hard reset for SSP (type 1) */
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int reset_type = (dev->dev_type == SATA_DEV ||
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(dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
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asd_clear_nexus_I_T(dev, NEXUS_PHASE_PRE);
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/* send a hard reset */
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ASD_DPRINTK("sending %s reset to %s\n",
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reset_type ? "hard" : "soft", dev_name(&phy->dev));
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res = sas_phy_reset(phy, reset_type);
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if (res == TMF_RESP_FUNC_COMPLETE || res == -ENODEV) {
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/* wait for the maximum settle time */
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msleep(500);
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/* clear all outstanding commands (keep nexus suspended) */
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asd_clear_nexus_I_T(dev, NEXUS_PHASE_POST);
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}
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for (i = 0 ; i < 3; i++) {
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tmp_res = asd_clear_nexus_I_T(dev, NEXUS_PHASE_RESUME);
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if (tmp_res == TC_RESUME)
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goto out;
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msleep(500);
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}
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/* This is a bit of a problem: the sequencer is still suspended
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* and is refusing to resume. Hope it will resume on a bigger hammer
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* or the disk is lost */
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dev_printk(KERN_ERR, &phy->dev,
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"Failed to resume nexus after reset 0x%x\n", tmp_res);
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res = TMF_RESP_FUNC_FAILED;
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out:
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sas_put_local_phy(phy);
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return res;
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}
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static int asd_clear_nexus_I_T_L(struct domain_device *dev, u8 *lun)
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{
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struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
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CLEAR_NEXUS_PRE;
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scb->clear_nexus.nexus = NEXUS_I_T_L;
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scb->clear_nexus.flags = SEND_Q | EXEC_Q | NOTINQ;
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memcpy(scb->clear_nexus.ssp_task.lun, lun, 8);
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scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
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dev->lldd_dev);
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CLEAR_NEXUS_POST;
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}
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static int asd_clear_nexus_tag(struct sas_task *task)
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{
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struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;
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struct asd_ascb *tascb = task->lldd_task;
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CLEAR_NEXUS_PRE;
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scb->clear_nexus.nexus = NEXUS_TAG;
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memcpy(scb->clear_nexus.ssp_task.lun, task->ssp_task.LUN, 8);
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scb->clear_nexus.ssp_task.tag = tascb->tag;
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if (task->dev->tproto)
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scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
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task->dev->lldd_dev);
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CLEAR_NEXUS_POST;
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}
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static int asd_clear_nexus_index(struct sas_task *task)
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{
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struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;
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struct asd_ascb *tascb = task->lldd_task;
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CLEAR_NEXUS_PRE;
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scb->clear_nexus.nexus = NEXUS_TRANS_CX;
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if (task->dev->tproto)
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scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
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task->dev->lldd_dev);
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scb->clear_nexus.index = cpu_to_le16(tascb->tc_index);
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CLEAR_NEXUS_POST;
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}
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/* ---------- TMFs ---------- */
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static void asd_tmf_timedout(unsigned long data)
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{
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struct asd_ascb *ascb = (void *) data;
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struct tasklet_completion_status *tcs = ascb->uldd_task;
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ASD_DPRINTK("tmf timed out\n");
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tcs->tmf_state = TMF_RESP_FUNC_FAILED;
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complete(ascb->completion);
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}
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static int asd_get_tmf_resp_tasklet(struct asd_ascb *ascb,
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struct done_list_struct *dl)
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{
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struct asd_ha_struct *asd_ha = ascb->ha;
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unsigned long flags;
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struct tc_resp_sb_struct {
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__le16 index_escb;
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u8 len_lsb;
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u8 flags;
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} __attribute__ ((packed)) *resp_sb = (void *) dl->status_block;
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int edb_id = ((resp_sb->flags & 0x70) >> 4)-1;
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struct asd_ascb *escb;
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struct asd_dma_tok *edb;
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struct ssp_frame_hdr *fh;
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struct ssp_response_iu *ru;
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int res = TMF_RESP_FUNC_FAILED;
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ASD_DPRINTK("tmf resp tasklet\n");
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spin_lock_irqsave(&asd_ha->seq.tc_index_lock, flags);
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escb = asd_tc_index_find(&asd_ha->seq,
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(int)le16_to_cpu(resp_sb->index_escb));
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spin_unlock_irqrestore(&asd_ha->seq.tc_index_lock, flags);
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if (!escb) {
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ASD_DPRINTK("Uh-oh! No escb for this dl?!\n");
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return res;
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}
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edb = asd_ha->seq.edb_arr[edb_id + escb->edb_index];
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ascb->tag = *(__be16 *)(edb->vaddr+4);
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fh = edb->vaddr + 16;
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ru = edb->vaddr + 16 + sizeof(*fh);
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res = ru->status;
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if (ru->datapres == 1) /* Response data present */
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res = ru->resp_data[3];
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#if 0
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ascb->tag = fh->tag;
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#endif
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ascb->tag_valid = 1;
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asd_invalidate_edb(escb, edb_id);
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return res;
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}
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static void asd_tmf_tasklet_complete(struct asd_ascb *ascb,
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struct done_list_struct *dl)
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{
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struct tasklet_completion_status *tcs;
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if (!del_timer(&ascb->timer))
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return;
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tcs = ascb->uldd_task;
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ASD_DPRINTK("tmf tasklet complete\n");
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tcs->dl_opcode = dl->opcode;
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if (dl->opcode == TC_SSP_RESP) {
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tcs->tmf_state = asd_get_tmf_resp_tasklet(ascb, dl);
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tcs->tag_valid = ascb->tag_valid;
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tcs->tag = ascb->tag;
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}
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complete(ascb->completion);
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asd_ascb_free(ascb);
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}
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static int asd_clear_nexus(struct sas_task *task)
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{
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int res = TMF_RESP_FUNC_FAILED;
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int leftover;
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struct asd_ascb *tascb = task->lldd_task;
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DECLARE_COMPLETION_ONSTACK(completion);
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unsigned long flags;
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tascb->completion = &completion;
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ASD_DPRINTK("task not done, clearing nexus\n");
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if (tascb->tag_valid)
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res = asd_clear_nexus_tag(task);
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else
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res = asd_clear_nexus_index(task);
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leftover = wait_for_completion_timeout(&completion,
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AIC94XX_SCB_TIMEOUT);
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tascb->completion = NULL;
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ASD_DPRINTK("came back from clear nexus\n");
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spin_lock_irqsave(&task->task_state_lock, flags);
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if (leftover < 1)
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res = TMF_RESP_FUNC_FAILED;
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if (task->task_state_flags & SAS_TASK_STATE_DONE)
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res = TMF_RESP_FUNC_COMPLETE;
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spin_unlock_irqrestore(&task->task_state_lock, flags);
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return res;
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}
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/**
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* asd_abort_task -- ABORT TASK TMF
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* @task: the task to be aborted
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*
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* Before calling ABORT TASK the task state flags should be ORed with
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* SAS_TASK_STATE_ABORTED (unless SAS_TASK_STATE_DONE is set) under
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* the task_state_lock IRQ spinlock, then ABORT TASK *must* be called.
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*
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* Implements the ABORT TASK TMF, I_T_L_Q nexus.
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* Returns: SAS TMF responses (see sas_task.h),
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* -ENOMEM,
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* -SAS_QUEUE_FULL.
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*
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* When ABORT TASK returns, the caller of ABORT TASK checks first the
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* task->task_state_flags, and then the return value of ABORT TASK.
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*
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* If the task has task state bit SAS_TASK_STATE_DONE set, then the
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* task was completed successfully prior to it being aborted. The
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* caller of ABORT TASK has responsibility to call task->task_done()
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* xor free the task, depending on their framework. The return code
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* is TMF_RESP_FUNC_FAILED in this case.
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*
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* Else the SAS_TASK_STATE_DONE bit is not set,
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* If the return code is TMF_RESP_FUNC_COMPLETE, then
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* the task was aborted successfully. The caller of
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* ABORT TASK has responsibility to call task->task_done()
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* to finish the task, xor free the task depending on their
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* framework.
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* else
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* the ABORT TASK returned some kind of error. The task
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* was _not_ cancelled. Nothing can be assumed.
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* The caller of ABORT TASK may wish to retry.
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*/
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int asd_abort_task(struct sas_task *task)
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{
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struct asd_ascb *tascb = task->lldd_task;
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struct asd_ha_struct *asd_ha = tascb->ha;
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int res = 1;
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unsigned long flags;
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struct asd_ascb *ascb = NULL;
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struct scb *scb;
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int leftover;
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DECLARE_TCS(tcs);
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DECLARE_COMPLETION_ONSTACK(completion);
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DECLARE_COMPLETION_ONSTACK(tascb_completion);
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tascb->completion = &tascb_completion;
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spin_lock_irqsave(&task->task_state_lock, flags);
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if (task->task_state_flags & SAS_TASK_STATE_DONE) {
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spin_unlock_irqrestore(&task->task_state_lock, flags);
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res = TMF_RESP_FUNC_COMPLETE;
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ASD_DPRINTK("%s: task 0x%p done\n", __func__, task);
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goto out_done;
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}
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spin_unlock_irqrestore(&task->task_state_lock, flags);
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ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
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if (!ascb)
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return -ENOMEM;
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ascb->uldd_task = &tcs;
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ascb->completion = &completion;
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scb = ascb->scb;
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scb->header.opcode = SCB_ABORT_TASK;
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switch (task->task_proto) {
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case SAS_PROTOCOL_SATA:
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case SAS_PROTOCOL_STP:
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scb->abort_task.proto_conn_rate = (1 << 5); /* STP */
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break;
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case SAS_PROTOCOL_SSP:
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scb->abort_task.proto_conn_rate = (1 << 4); /* SSP */
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scb->abort_task.proto_conn_rate |= task->dev->linkrate;
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break;
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case SAS_PROTOCOL_SMP:
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break;
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default:
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break;
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}
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if (task->task_proto == SAS_PROTOCOL_SSP) {
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scb->abort_task.ssp_frame.frame_type = SSP_TASK;
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memcpy(scb->abort_task.ssp_frame.hashed_dest_addr,
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task->dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
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memcpy(scb->abort_task.ssp_frame.hashed_src_addr,
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task->dev->port->ha->hashed_sas_addr,
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HASHED_SAS_ADDR_SIZE);
|
|
scb->abort_task.ssp_frame.tptt = cpu_to_be16(0xFFFF);
|
|
|
|
memcpy(scb->abort_task.ssp_task.lun, task->ssp_task.LUN, 8);
|
|
scb->abort_task.ssp_task.tmf = TMF_ABORT_TASK;
|
|
scb->abort_task.ssp_task.tag = cpu_to_be16(0xFFFF);
|
|
}
|
|
|
|
scb->abort_task.sister_scb = cpu_to_le16(0xFFFF);
|
|
scb->abort_task.conn_handle = cpu_to_le16(
|
|
(u16)(unsigned long)task->dev->lldd_dev);
|
|
scb->abort_task.retry_count = 1;
|
|
scb->abort_task.index = cpu_to_le16((u16)tascb->tc_index);
|
|
scb->abort_task.itnl_to = cpu_to_le16(ITNL_TIMEOUT_CONST);
|
|
|
|
res = asd_enqueue_internal(ascb, asd_tmf_tasklet_complete,
|
|
asd_tmf_timedout);
|
|
if (res)
|
|
goto out_free;
|
|
wait_for_completion(&completion);
|
|
ASD_DPRINTK("tmf came back\n");
|
|
|
|
tascb->tag = tcs.tag;
|
|
tascb->tag_valid = tcs.tag_valid;
|
|
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
if (task->task_state_flags & SAS_TASK_STATE_DONE) {
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
ASD_DPRINTK("%s: task 0x%p done\n", __func__, task);
|
|
goto out_done;
|
|
}
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
|
|
if (tcs.dl_opcode == TC_SSP_RESP) {
|
|
/* The task to be aborted has been sent to the device.
|
|
* We got a Response IU for the ABORT TASK TMF. */
|
|
if (tcs.tmf_state == TMF_RESP_FUNC_COMPLETE)
|
|
res = asd_clear_nexus(task);
|
|
else
|
|
res = tcs.tmf_state;
|
|
} else if (tcs.dl_opcode == TC_NO_ERROR &&
|
|
tcs.tmf_state == TMF_RESP_FUNC_FAILED) {
|
|
/* timeout */
|
|
res = TMF_RESP_FUNC_FAILED;
|
|
} else {
|
|
/* In the following we assume that the managing layer
|
|
* will _never_ make a mistake, when issuing ABORT
|
|
* TASK.
|
|
*/
|
|
switch (tcs.dl_opcode) {
|
|
default:
|
|
res = asd_clear_nexus(task);
|
|
/* fallthrough */
|
|
case TC_NO_ERROR:
|
|
break;
|
|
/* The task hasn't been sent to the device xor
|
|
* we never got a (sane) Response IU for the
|
|
* ABORT TASK TMF.
|
|
*/
|
|
case TF_NAK_RECV:
|
|
res = TMF_RESP_INVALID_FRAME;
|
|
break;
|
|
case TF_TMF_TASK_DONE: /* done but not reported yet */
|
|
res = TMF_RESP_FUNC_FAILED;
|
|
leftover =
|
|
wait_for_completion_timeout(&tascb_completion,
|
|
AIC94XX_SCB_TIMEOUT);
|
|
spin_lock_irqsave(&task->task_state_lock, flags);
|
|
if (leftover < 1)
|
|
res = TMF_RESP_FUNC_FAILED;
|
|
if (task->task_state_flags & SAS_TASK_STATE_DONE)
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
spin_unlock_irqrestore(&task->task_state_lock, flags);
|
|
break;
|
|
case TF_TMF_NO_TAG:
|
|
case TF_TMF_TAG_FREE: /* the tag is in the free list */
|
|
case TF_TMF_NO_CONN_HANDLE: /* no such device */
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
break;
|
|
case TF_TMF_NO_CTX: /* not in seq, or proto != SSP */
|
|
res = TMF_RESP_FUNC_ESUPP;
|
|
break;
|
|
}
|
|
}
|
|
out_done:
|
|
tascb->completion = NULL;
|
|
if (res == TMF_RESP_FUNC_COMPLETE) {
|
|
task->lldd_task = NULL;
|
|
mb();
|
|
asd_ascb_free(tascb);
|
|
}
|
|
ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task, res);
|
|
return res;
|
|
|
|
out_free:
|
|
asd_ascb_free(ascb);
|
|
ASD_DPRINTK("task 0x%p aborted, res: 0x%x\n", task, res);
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* asd_initiate_ssp_tmf -- send a TMF to an I_T_L or I_T_L_Q nexus
|
|
* @dev: pointer to struct domain_device of interest
|
|
* @lun: pointer to u8[8] which is the LUN
|
|
* @tmf: the TMF to be performed (see sas_task.h or the SAS spec)
|
|
* @index: the transaction context of the task to be queried if QT TMF
|
|
*
|
|
* This function is used to send ABORT TASK SET, CLEAR ACA,
|
|
* CLEAR TASK SET, LU RESET and QUERY TASK TMFs.
|
|
*
|
|
* No SCBs should be queued to the I_T_L nexus when this SCB is
|
|
* pending.
|
|
*
|
|
* Returns: TMF response code (see sas_task.h or the SAS spec)
|
|
*/
|
|
static int asd_initiate_ssp_tmf(struct domain_device *dev, u8 *lun,
|
|
int tmf, int index)
|
|
{
|
|
struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
|
|
struct asd_ascb *ascb;
|
|
int res = 1;
|
|
struct scb *scb;
|
|
DECLARE_COMPLETION_ONSTACK(completion);
|
|
DECLARE_TCS(tcs);
|
|
|
|
if (!(dev->tproto & SAS_PROTOCOL_SSP))
|
|
return TMF_RESP_FUNC_ESUPP;
|
|
|
|
ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
|
|
if (!ascb)
|
|
return -ENOMEM;
|
|
|
|
ascb->completion = &completion;
|
|
ascb->uldd_task = &tcs;
|
|
scb = ascb->scb;
|
|
|
|
if (tmf == TMF_QUERY_TASK)
|
|
scb->header.opcode = QUERY_SSP_TASK;
|
|
else
|
|
scb->header.opcode = INITIATE_SSP_TMF;
|
|
|
|
scb->ssp_tmf.proto_conn_rate = (1 << 4); /* SSP */
|
|
scb->ssp_tmf.proto_conn_rate |= dev->linkrate;
|
|
/* SSP frame header */
|
|
scb->ssp_tmf.ssp_frame.frame_type = SSP_TASK;
|
|
memcpy(scb->ssp_tmf.ssp_frame.hashed_dest_addr,
|
|
dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
|
|
memcpy(scb->ssp_tmf.ssp_frame.hashed_src_addr,
|
|
dev->port->ha->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
|
|
scb->ssp_tmf.ssp_frame.tptt = cpu_to_be16(0xFFFF);
|
|
/* SSP Task IU */
|
|
memcpy(scb->ssp_tmf.ssp_task.lun, lun, 8);
|
|
scb->ssp_tmf.ssp_task.tmf = tmf;
|
|
|
|
scb->ssp_tmf.sister_scb = cpu_to_le16(0xFFFF);
|
|
scb->ssp_tmf.conn_handle= cpu_to_le16((u16)(unsigned long)
|
|
dev->lldd_dev);
|
|
scb->ssp_tmf.retry_count = 1;
|
|
scb->ssp_tmf.itnl_to = cpu_to_le16(ITNL_TIMEOUT_CONST);
|
|
if (tmf == TMF_QUERY_TASK)
|
|
scb->ssp_tmf.index = cpu_to_le16(index);
|
|
|
|
res = asd_enqueue_internal(ascb, asd_tmf_tasklet_complete,
|
|
asd_tmf_timedout);
|
|
if (res)
|
|
goto out_err;
|
|
wait_for_completion(&completion);
|
|
|
|
switch (tcs.dl_opcode) {
|
|
case TC_NO_ERROR:
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
break;
|
|
case TF_NAK_RECV:
|
|
res = TMF_RESP_INVALID_FRAME;
|
|
break;
|
|
case TF_TMF_TASK_DONE:
|
|
res = TMF_RESP_FUNC_FAILED;
|
|
break;
|
|
case TF_TMF_NO_TAG:
|
|
case TF_TMF_TAG_FREE: /* the tag is in the free list */
|
|
case TF_TMF_NO_CONN_HANDLE: /* no such device */
|
|
res = TMF_RESP_FUNC_COMPLETE;
|
|
break;
|
|
case TF_TMF_NO_CTX: /* not in seq, or proto != SSP */
|
|
res = TMF_RESP_FUNC_ESUPP;
|
|
break;
|
|
default:
|
|
/* Allow TMF response codes to propagate upwards */
|
|
res = tcs.dl_opcode;
|
|
break;
|
|
}
|
|
return res;
|
|
out_err:
|
|
asd_ascb_free(ascb);
|
|
return res;
|
|
}
|
|
|
|
int asd_abort_task_set(struct domain_device *dev, u8 *lun)
|
|
{
|
|
int res = asd_initiate_ssp_tmf(dev, lun, TMF_ABORT_TASK_SET, 0);
|
|
|
|
if (res == TMF_RESP_FUNC_COMPLETE)
|
|
asd_clear_nexus_I_T_L(dev, lun);
|
|
return res;
|
|
}
|
|
|
|
int asd_clear_aca(struct domain_device *dev, u8 *lun)
|
|
{
|
|
int res = asd_initiate_ssp_tmf(dev, lun, TMF_CLEAR_ACA, 0);
|
|
|
|
if (res == TMF_RESP_FUNC_COMPLETE)
|
|
asd_clear_nexus_I_T_L(dev, lun);
|
|
return res;
|
|
}
|
|
|
|
int asd_clear_task_set(struct domain_device *dev, u8 *lun)
|
|
{
|
|
int res = asd_initiate_ssp_tmf(dev, lun, TMF_CLEAR_TASK_SET, 0);
|
|
|
|
if (res == TMF_RESP_FUNC_COMPLETE)
|
|
asd_clear_nexus_I_T_L(dev, lun);
|
|
return res;
|
|
}
|
|
|
|
int asd_lu_reset(struct domain_device *dev, u8 *lun)
|
|
{
|
|
int res = asd_initiate_ssp_tmf(dev, lun, TMF_LU_RESET, 0);
|
|
|
|
if (res == TMF_RESP_FUNC_COMPLETE)
|
|
asd_clear_nexus_I_T_L(dev, lun);
|
|
return res;
|
|
}
|
|
|
|
/**
|
|
* asd_query_task -- send a QUERY TASK TMF to an I_T_L_Q nexus
|
|
* task: pointer to sas_task struct of interest
|
|
*
|
|
* Returns: TMF_RESP_FUNC_COMPLETE if the task is not in the task set,
|
|
* or TMF_RESP_FUNC_SUCC if the task is in the task set.
|
|
*
|
|
* Normally the management layer sets the task to aborted state,
|
|
* and then calls query task and then abort task.
|
|
*/
|
|
int asd_query_task(struct sas_task *task)
|
|
{
|
|
struct asd_ascb *ascb = task->lldd_task;
|
|
int index;
|
|
|
|
if (ascb) {
|
|
index = ascb->tc_index;
|
|
return asd_initiate_ssp_tmf(task->dev, task->ssp_task.LUN,
|
|
TMF_QUERY_TASK, index);
|
|
}
|
|
return TMF_RESP_FUNC_COMPLETE;
|
|
}
|