[PATCH 2.6.13 20/20] aic94xx: aic94xx_tmf.c Implements the Task ManagementFuncions defined by SAS
From: Luben Tuikov
Date: Fri Sep 09 2005 - 14:38:43 EST
Signed-off-by: Luben Tuikov <luben_tuikov@xxxxxxxxxxx>
diff -X linux-2.6.13/Documentation/dontdiff -Naur linux-2.6.13-orig/drivers/scsi/aic94xx/aic94xx_tmf.c linux-2.6.13/drivers/scsi/aic94xx/aic94xx_tmf.c
--- linux-2.6.13-orig/drivers/scsi/aic94xx/aic94xx_tmf.c 1969-12-31 19:00:00.000000000 -0500
+++ linux-2.6.13/drivers/scsi/aic94xx/aic94xx_tmf.c 2005-09-09 11:21:23.000000000 -0400
@@ -0,0 +1,634 @@
+/*
+ * Aic94xx Task Management Functions
+ *
+ * Copyright (C) 2005 Adaptec, Inc. All rights reserved.
+ * Copyright (C) 2005 Luben Tuikov <luben_tuikov@xxxxxxxxxxx>
+ *
+ * This file is licensed under GPLv2.
+ *
+ * This file is part of the aic94xx driver.
+ *
+ * The aic94xx driver is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; version 2 of the
+ * License.
+ *
+ * The aic94xx driver is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with the aic94xx driver; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * $Id: //depot/aic94xx/aic94xx_tmf.c#34 $
+ */
+
+#include <linux/spinlock.h>
+#include <scsi/sas/sas_task.h>
+#include "aic94xx.h"
+#include "aic94xx_sas.h"
+#include "aic94xx_hwi.h"
+
+/* ---------- Internal enqueue ---------- */
+
+static int asd_enqueue_internal(struct asd_ascb *ascb,
+ void (*tasklet_complete)(struct asd_ascb *,
+ struct done_list_struct *),
+ void (*timed_out)(unsigned long))
+{
+ int res;
+
+ ascb->tasklet_complete = tasklet_complete;
+ ascb->uldd_timer = 1;
+
+ ascb->timer.data = (unsigned long) ascb;
+ ascb->timer.function = timed_out;
+ ascb->timer.expires = jiffies + AIC94XX_SCB_TIMEOUT;
+
+ add_timer(&ascb->timer);
+
+ res = asd_post_ascb_list(ascb->ha, ascb, 1);
+ if (unlikely(res))
+ del_timer(&ascb->timer);
+ return res;
+}
+
+static inline void asd_timedout_common(unsigned long data)
+{
+ struct asd_ascb *ascb = (void *) data;
+ struct asd_seq_data *seq = &ascb->ha->seq;
+ unsigned long flags;
+
+ spin_lock_irqsave(&seq->pend_q_lock, flags);
+ seq->pending--;
+ list_del_init(&ascb->list);
+ spin_unlock_irqrestore(&seq->pend_q_lock, flags);
+}
+
+/* ---------- CLEAR NEXUS ---------- */
+
+static void asd_clear_nexus_tasklet_complete(struct asd_ascb *ascb,
+ struct done_list_struct *dl)
+{
+ ASD_DPRINTK("%s: here\n", __FUNCTION__);
+ if (!del_timer(&ascb->timer)) {
+ ASD_DPRINTK("%s: couldn't delete timer\n", __FUNCTION__);
+ return;
+ }
+ ASD_DPRINTK("%s: opcode: 0x%x\n", __FUNCTION__, dl->opcode);
+ ascb->uldd_task = (void *) (unsigned long) dl->opcode;
+ complete(&ascb->completion);
+}
+
+static void asd_clear_nexus_timedout(unsigned long data)
+{
+ struct asd_ascb *ascb = (void *) data;
+
+ ASD_DPRINTK("%s: here\n", __FUNCTION__);
+ asd_timedout_common(data);
+ ascb->uldd_task = (void *) TMF_RESP_FUNC_FAILED;
+ complete(&ascb->completion);
+}
+
+#define CLEAR_NEXUS_PRE \
+ ASD_DPRINTK("%s: PRE\n", __FUNCTION__); \
+ res = 1; \
+ ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL); \
+ if (!ascb) \
+ return -ENOMEM; \
+ \
+ scb = ascb->scb; \
+ scb->header.opcode = CLEAR_NEXUS
+
+#define CLEAR_NEXUS_POST \
+ ASD_DPRINTK("%s: POST\n", __FUNCTION__); \
+ res = asd_enqueue_internal(ascb, asd_clear_nexus_tasklet_complete, \
+ asd_clear_nexus_timedout); \
+ if (res) \
+ goto out_err; \
+ ASD_DPRINTK("%s: clear nexus posted, waiting...\n", __FUNCTION__); \
+ wait_for_completion(&ascb->completion); \
+ res = (int) (unsigned long) ascb->uldd_task; \
+ if (res == TC_NO_ERROR) \
+ res = TMF_RESP_FUNC_COMPLETE; \
+out_err: \
+ asd_ascb_free(ascb); \
+ return res
+
+int asd_clear_nexus_ha(struct sas_ha_struct *sas_ha)
+{
+ struct asd_ha_struct *asd_ha = sas_ha->lldd_ha;
+ struct asd_ascb *ascb;
+ struct scb *scb;
+ int res;
+
+ CLEAR_NEXUS_PRE;
+ scb->clear_nexus.nexus = NEXUS_ADAPTER;
+ CLEAR_NEXUS_POST;
+}
+
+int asd_clear_nexus_port(struct sas_port *port)
+{
+ struct asd_ha_struct *asd_ha = port->ha->lldd_ha;
+ struct asd_ascb *ascb;
+ struct scb *scb;
+ int res;
+
+ CLEAR_NEXUS_PRE;
+ scb->clear_nexus.nexus = NEXUS_PORT;
+ scb->clear_nexus.conn_mask = port->phy_mask;
+ CLEAR_NEXUS_POST;
+}
+
+#if 0
+static int asd_clear_nexus_I_T(struct domain_device *dev)
+{
+ struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
+ struct asd_ascb *ascb;
+ struct scb *scb;
+ int res;
+
+ CLEAR_NEXUS_PRE;
+ scb->clear_nexus.nexus = NEXUS_I_T;
+ scb->clear_nexus.flags = SEND_Q | EXEC_Q | NOTINQ;
+ if (dev->tproto)
+ scb->clear_nexus.flags |= SUSPEND_TX;
+ scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
+ dev->lldd_dev);
+ CLEAR_NEXUS_POST;
+}
+#endif
+
+static int asd_clear_nexus_I_T_L(struct domain_device *dev, u8 *lun)
+{
+ struct asd_ha_struct *asd_ha = dev->port->ha->lldd_ha;
+ struct asd_ascb *ascb;
+ struct scb *scb;
+ int res;
+
+ CLEAR_NEXUS_PRE;
+ scb->clear_nexus.nexus = NEXUS_I_T_L;
+ scb->clear_nexus.flags = SEND_Q | EXEC_Q | NOTINQ;
+ if (dev->tproto)
+ scb->clear_nexus.flags |= SUSPEND_TX;
+ memcpy(scb->clear_nexus.ssp_task.lun, lun, 8);
+ scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
+ dev->lldd_dev);
+ CLEAR_NEXUS_POST;
+}
+
+static int asd_clear_nexus_tag(struct sas_task *task)
+{
+ struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;
+ struct asd_ascb *tascb = task->lldd_task;
+ struct asd_ascb *ascb;
+ struct scb *scb;
+ int res;
+
+ CLEAR_NEXUS_PRE;
+ scb->clear_nexus.nexus = NEXUS_TAG;
+ memcpy(scb->clear_nexus.ssp_task.lun, task->ssp_task.LUN, 8);
+ scb->clear_nexus.ssp_task.tag = tascb->tag;
+ if (task->dev->tproto)
+ scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
+ task->dev->lldd_dev);
+ CLEAR_NEXUS_POST;
+}
+
+static int asd_clear_nexus_index(struct sas_task *task)
+{
+ struct asd_ha_struct *asd_ha = task->dev->port->ha->lldd_ha;
+ struct asd_ascb *tascb = task->lldd_task;
+ struct asd_ascb *ascb;
+ struct scb *scb;
+ int res;
+
+ CLEAR_NEXUS_PRE;
+ scb->clear_nexus.nexus = NEXUS_TRANS_CX;
+ if (task->dev->tproto)
+ scb->clear_nexus.conn_handle = cpu_to_le16((u16)(unsigned long)
+ task->dev->lldd_dev);
+ scb->clear_nexus.index = cpu_to_le16(tascb->tc_index);
+ CLEAR_NEXUS_POST;
+}
+
+/* ---------- TMFs ---------- */
+
+static void asd_tmf_timedout(unsigned long data)
+{
+ struct asd_ascb *ascb = (void *) data;
+
+ ASD_DPRINTK("tmf timed out\n");
+ asd_timedout_common(data);
+ ascb->uldd_task = (void *) TMF_RESP_FUNC_FAILED;
+ complete(&ascb->completion);
+}
+
+static int asd_get_tmf_resp_tasklet(struct asd_ascb *ascb,
+ struct done_list_struct *dl)
+{
+ struct asd_ha_struct *asd_ha = ascb->ha;
+ unsigned long flags;
+ struct tc_resp_sb_struct {
+ __le16 index_escb;
+ u8 len_lsb;
+ u8 flags;
+ } __attribute__ ((packed)) *resp_sb = (void *) dl->status_block;
+
+ int edb_id = ((resp_sb->flags & 0x70) >> 4)-1;
+ struct asd_ascb *escb;
+ struct asd_dma_tok *edb;
+ struct ssp_frame_hdr *fh;
+ struct ssp_response_iu *ru;
+ int res = TMF_RESP_FUNC_FAILED;
+
+ ASD_DPRINTK("tmf resp tasklet\n");
+
+ spin_lock_irqsave(&asd_ha->seq.tc_index_lock, flags);
+ escb = asd_tc_index_find(&asd_ha->seq,
+ (int)le16_to_cpu(resp_sb->index_escb));
+ spin_unlock_irqrestore(&asd_ha->seq.tc_index_lock, flags);
+
+ if (!escb) {
+ ASD_DPRINTK("Uh-oh! No escb for this dl?!\n");
+ return res;
+ }
+
+ edb = asd_ha->seq.edb_arr[edb_id + escb->edb_index];
+ ascb->tag = *(__be16 *)(edb->vaddr+4);
+ fh = edb->vaddr + 16;
+ ru = edb->vaddr + 16 + sizeof(*fh);
+ res = ru->status;
+ if (ru->datapres == 1) /* Response data present */
+ res = ru->resp_data[3];
+#if 0
+ ascb->tag = fh->tag;
+#endif
+ ascb->tag_valid = 1;
+
+ asd_invalidate_edb(escb, edb_id);
+ return res;
+}
+
+static void asd_tmf_tasklet_complete(struct asd_ascb *ascb,
+ struct done_list_struct *dl)
+{
+ if (!del_timer(&ascb->timer))
+ return;
+
+ ASD_DPRINTK("tmf tasklet complete\n");
+
+ if (dl->opcode == TC_SSP_RESP)
+ ascb->uldd_task = (void *) (unsigned long)
+ asd_get_tmf_resp_tasklet(ascb, dl);
+ else
+ ascb->uldd_task = (void *) 0xFF00 + (unsigned long) dl->opcode;
+
+ complete(&ascb->completion);
+}
+
+static inline int asd_clear_nexus(struct sas_task *task)
+{
+ int res = TMF_RESP_FUNC_FAILED;
+ struct asd_ascb *tascb = task->lldd_task;
+ unsigned long flags;
+
+ ASD_DPRINTK("task not done, clearing nexus\n");
+ if (tascb->tag_valid)
+ res = asd_clear_nexus_tag(task);
+ else
+ res = asd_clear_nexus_index(task);
+ wait_for_completion_timeout(&tascb->completion,
+ AIC94XX_SCB_TIMEOUT);
+ ASD_DPRINTK("came back from clear nexus\n");
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ if (task->task_state_flags & SAS_TASK_STATE_DONE)
+ res = TMF_RESP_FUNC_COMPLETE;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+ return res;
+}
+
+/**
+ * asd_abort_task -- ABORT TASK TMF
+ * @task: the task to be aborted
+ *
+ * Before calling ABORT TASK the task state flags should be ORed with
+ * SAS_TASK_STATE_ABORTED (unless SAS_TASK_STATE_DONE is set) under
+ * the task_state_lock IRQ spinlock, then ABORT TASK *must* be called.
+ *
+ * Implements the ABORT TASK TMF, I_T_L_Q nexus.
+ * Returns: SAS TMF responses (see sas_task.h),
+ * -ENOMEM,
+ * -SAS_QUEUE_FULL.
+ *
+ * When ABORT TASK returns, the caller of ABORT TASK checks first the
+ * task->task_state_flags, and then the return value of ABORT TASK.
+ *
+ * If the task has task state bit SAS_TASK_STATE_DONE set, then the
+ * task was completed successfully prior to it being aborted. The
+ * caller of ABORT TASK has responsibility to call task->task_done()
+ * xor free the task, depending on their framework. The return code
+ * is TMF_RESP_FUNC_FAILED in this case.
+ *
+ * Else the SAS_TASK_STATE_DONE bit is not set,
+ * If the return code is TMF_RESP_FUNC_COMPLETE, then
+ * the task was aborted successfully. The caller of
+ * ABORT TASK has responsibility to call task->task_done()
+ * to finish the task, xor free the task depending on their
+ * framework.
+ * else
+ * the ABORT TASK returned some kind of error. The task
+ * was _not_ cancelled. Nothing can be assumed.
+ * The caller of ABORT TASK may wish to retry.
+ */
+int asd_abort_task(struct sas_task *task)
+{
+ struct asd_ascb *tascb = task->lldd_task;
+ struct asd_ha_struct *asd_ha = tascb->ha;
+ int res = 1;
+ unsigned long flags;
+ struct asd_ascb *ascb = NULL;
+ struct scb *scb;
+
+ 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", __FUNCTION__, task);
+ goto out_done;
+ }
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+ ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
+ if (!ascb)
+ return -ENOMEM;
+ scb = ascb->scb;
+
+ scb->header.opcode = ABORT_TASK;
+
+ switch (task->task_proto) {
+ case SATA_PROTO:
+ case SAS_PROTO_STP:
+ scb->abort_task.proto_conn_rate = (1 << 5); /* STP */
+ break;
+ case SAS_PROTO_SSP:
+ scb->abort_task.proto_conn_rate = (1 << 4); /* SSP */
+ scb->abort_task.proto_conn_rate |= task->dev->linkrate;
+ break;
+ case SAS_PROTO_SMP:
+ break;
+ default:
+ break;
+ }
+
+ if (task->task_proto == SAS_PROTO_SSP) {
+ scb->abort_task.ssp_frame.frame_type = SSP_TASK;
+ memcpy(scb->abort_task.ssp_frame.hashed_dest_addr,
+ task->dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
+ memcpy(scb->abort_task.ssp_frame.hashed_src_addr,
+ task->dev->port->ha->hashed_sas_addr,
+ 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;
+ wait_for_completion(&ascb->completion);
+ ASD_DPRINTK("tmf came back\n");
+
+ res = (int) (unsigned long) ascb->uldd_task;
+ tascb->tag = ascb->tag;
+ tascb->tag_valid = ascb->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", __FUNCTION__, task);
+ goto out_done;
+ }
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+
+ switch (res) {
+ /* The task to be aborted has been sent to the device.
+ * We got a Response IU for the ABORT TASK TMF. */
+ case TC_NO_ERROR + 0xFF00:
+ case TMF_RESP_FUNC_COMPLETE:
+ case TMF_RESP_FUNC_FAILED:
+ res = asd_clear_nexus(task);
+ break;
+ case TMF_RESP_INVALID_FRAME:
+ case TMF_RESP_OVERLAPPED_TAG:
+ case TMF_RESP_FUNC_ESUPP:
+ case TMF_RESP_NO_LUN:
+ goto out_done; break;
+ }
+ /* In the following we assume that the managing layer
+ * will _never_ make a mistake, when issuing ABORT TASK.
+ */
+ switch (res) {
+ default:
+ res = asd_clear_nexus(task);
+ /* fallthrough */
+ case TC_NO_ERROR + 0xFF00:
+ case TMF_RESP_FUNC_COMPLETE:
+ 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 + 0xFF00:
+ res = TMF_RESP_INVALID_FRAME;
+ break;
+ case TF_TMF_TASK_DONE + 0xFF00: /* done but not reported yet */
+ res = TMF_RESP_FUNC_FAILED;
+ wait_for_completion_timeout(&tascb->completion,
+ AIC94XX_SCB_TIMEOUT);
+ spin_lock_irqsave(&task->task_state_lock, flags);
+ if (task->task_state_flags & SAS_TASK_STATE_DONE)
+ res = TMF_RESP_FUNC_COMPLETE;
+ spin_unlock_irqrestore(&task->task_state_lock, flags);
+ goto out_done; break;
+ case TF_TMF_NO_TAG + 0xFF00:
+ case TF_TMF_TAG_FREE + 0xFF00: /* the tag is in the free list */
+ case TF_TMF_NO_CTX + 0xFF00: /* not in seq, or proto != SSP */
+ case TF_TMF_NO_CONN_HANDLE + 0xFF00: /* no such device */
+ res = TMF_RESP_FUNC_COMPLETE;
+ goto out_done; break;
+ }
+out_done:
+ if (res == TMF_RESP_FUNC_COMPLETE) {
+ task->lldd_task = NULL;
+ mb();
+ asd_ascb_free(tascb);
+ }
+out:
+ 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;
+
+ if (!(dev->tproto & SAS_PROTO_SSP))
+ return TMF_RESP_FUNC_ESUPP;
+
+ ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
+ if (!ascb)
+ return -ENOMEM;
+ 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(&ascb->completion);
+ res = (int) (unsigned long) ascb->uldd_task;
+
+ switch (res) {
+ case TC_NO_ERROR + 0xFF00:
+ res = TMF_RESP_FUNC_COMPLETE;
+ break;
+ case TF_NAK_RECV + 0xFF00:
+ res = TMF_RESP_INVALID_FRAME;
+ break;
+ case TF_TMF_TASK_DONE + 0xFF00:
+ res = TMF_RESP_FUNC_FAILED;
+ break;
+ case TF_TMF_NO_TAG + 0xFF00:
+ case TF_TMF_TAG_FREE + 0xFF00: /* the tag is in the free list */
+ case TF_TMF_NO_CTX + 0xFF00: /* not in seq, or proto != SSP */
+ case TF_TMF_NO_CONN_HANDLE + 0xFF00: /* no such device */
+ res = TMF_RESP_FUNC_COMPLETE;
+ break;
+ default:
+ ASD_DPRINTK("%s: converting result 0x%x to TMF_RESP_FUNC_FAILED\n",
+ __FUNCTION__, res);
+ res = TMF_RESP_FUNC_FAILED;
+ break;
+ }
+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;
+}
-
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