Exemple #1
0
static int asd_clear_nexus(struct sas_task *task)
{
	int res = TMF_RESP_FUNC_FAILED;
	int leftover;
	struct asd_ascb *tascb = task->lldd_task;
	DECLARE_COMPLETION_ONSTACK(completion);
	unsigned long flags;

	tascb->completion = &completion;

	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);
	leftover = wait_for_completion_timeout(&completion,
					       AIC94XX_SCB_TIMEOUT);
	tascb->completion = NULL;
	ASD_DPRINTK("came back from clear nexus\n");
	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);

	return res;
}
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);
}
Exemple #3
0
static void asd_clear_nexus_tasklet_complete(struct asd_ascb *ascb,
					     struct done_list_struct *dl)
{
	struct tasklet_completion_status *tcs = ascb->uldd_task;
	ASD_DPRINTK("%s: here\n", __func__);
	if (!del_timer(&ascb->timer)) {
		ASD_DPRINTK("%s: couldn't delete timer\n", __func__);
		return;
	}
	ASD_DPRINTK("%s: opcode: 0x%x\n", __func__, dl->opcode);
	tcs->dl_opcode = dl->opcode;
	complete(ascb->completion);
	asd_ascb_free(ascb);
}
Exemple #4
0
int asd_I_T_nexus_reset(struct domain_device *dev)
{
	int res, tmp_res, i;
	struct sas_phy *phy = sas_find_local_phy(dev);
	/* Standard mandates link reset for ATA  (type 0) and
	 * hard reset for SSP (type 1) */
	int reset_type = (dev->dev_type == SATA_DEV ||
			  (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;

	asd_clear_nexus_I_T(dev, NEXUS_PHASE_PRE);
	/* send a hard reset */
	ASD_DPRINTK("sending %s reset to %s\n",
		    reset_type ? "hard" : "soft", dev_name(&phy->dev));
	res = sas_phy_reset(phy, reset_type);
	if (res == TMF_RESP_FUNC_COMPLETE) {
		/* wait for the maximum settle time */
		msleep(500);
		/* clear all outstanding commands (keep nexus suspended) */
		asd_clear_nexus_I_T(dev, NEXUS_PHASE_POST);
	}
	for (i = 0 ; i < 3; i++) {
		tmp_res = asd_clear_nexus_I_T(dev, NEXUS_PHASE_RESUME);
		if (tmp_res == TC_RESUME)
			return res;
		msleep(500);
	}

	/* This is a bit of a problem:  the sequencer is still suspended
	 * and is refusing to resume.  Hope it will resume on a bigger hammer
	 * or the disk is lost */
	dev_printk(KERN_ERR, &phy->dev,
		   "Failed to resume nexus after reset 0x%x\n", tmp_res);

	return TMF_RESP_FUNC_FAILED;
}
int asd_I_T_nexus_reset(struct domain_device *dev)
{
	int res, tmp_res, i;
	struct sas_phy *phy = sas_get_local_phy(dev);
	int reset_type = (dev->dev_type == SATA_DEV ||
			  (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;

	asd_clear_nexus_I_T(dev, NEXUS_PHASE_PRE);
	
	ASD_DPRINTK("sending %s reset to %s\n",
		    reset_type ? "hard" : "soft", dev_name(&phy->dev));
	res = sas_phy_reset(phy, reset_type);
	if (res == TMF_RESP_FUNC_COMPLETE || res == -ENODEV) {
		
		msleep(500);
		
		asd_clear_nexus_I_T(dev, NEXUS_PHASE_POST);
	}
	for (i = 0 ; i < 3; i++) {
		tmp_res = asd_clear_nexus_I_T(dev, NEXUS_PHASE_RESUME);
		if (tmp_res == TC_RESUME)
			goto out;
		msleep(500);
	}

	dev_printk(KERN_ERR, &phy->dev,
		   "Failed to resume nexus after reset 0x%x\n", tmp_res);

	res = TMF_RESP_FUNC_FAILED;
 out:
	sas_put_local_phy(phy);
	return res;
}
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;
}
Exemple #7
0
static void asd_clear_nexus_timedout(unsigned long data)
{
	struct asd_ascb *ascb = (void *)data;
	struct tasklet_completion_status *tcs = ascb->uldd_task;

	ASD_DPRINTK("%s: here\n", __func__);
	tcs->dl_opcode = TMF_RESP_FUNC_FAILED;
	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);
}
Exemple #9
0
static void asd_tmf_timedout(unsigned long data)
{
	struct asd_ascb *ascb = (void *) data;
	struct tasklet_completion_status *tcs = ascb->uldd_task;

	ASD_DPRINTK("tmf timed out\n");
	tcs->tmf_state = TMF_RESP_FUNC_FAILED;
	complete(ascb->completion);
}
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 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);
}
Exemple #12
0
/**
 * asd_unpause_cseq - unpause the central sequencer.
 * @asd_ha: pointer to host adapter structure.
 *
 * Return 0 on success, negative on error.
 */
int asd_unpause_cseq(struct asd_ha_struct *asd_ha)
{
	u32	arp2ctl;
	int	count = PAUSE_TRIES;

	arp2ctl = asd_read_reg_dword(asd_ha, CARP2CTL);
	if (!(arp2ctl & PAUSED))
		return 0;

	asd_write_reg_dword(asd_ha, CARP2CTL, arp2ctl & ~EPAUSE);
	do {
		arp2ctl = asd_read_reg_dword(asd_ha, CARP2CTL);
		if (!(arp2ctl & PAUSED))
			return 0;
		udelay(PAUSE_DELAY);
	} while (--count > 0);

	ASD_DPRINTK("couldn't unpause the CSEQ\n");
	return -1;
}
Exemple #13
0
/**
 * asd_seq_pause_lseq - pause a link sequencer
 * @asd_ha: pointer to a host adapter structure
 * @lseq: link sequencer of interest
 *
 * Return 0 on success, negative on error.
 */
static inline int asd_seq_pause_lseq(struct asd_ha_struct *asd_ha, int lseq)
{
	u32    arp2ctl;
	int    count = PAUSE_TRIES;

	arp2ctl = asd_read_reg_dword(asd_ha, LmARP2CTL(lseq));
	if (arp2ctl & PAUSED)
		return 0;

	asd_write_reg_dword(asd_ha, LmARP2CTL(lseq), arp2ctl | EPAUSE);
	do {
		arp2ctl = asd_read_reg_dword(asd_ha, LmARP2CTL(lseq));
		if (arp2ctl & PAUSED)
			return 0;
		udelay(PAUSE_DELAY);
	} while (--count > 0);

	ASD_DPRINTK("couldn't pause LSEQ %d\n", lseq);
	return -1;
}
Exemple #14
0
static void asd_tmf_tasklet_complete(struct asd_ascb *ascb,
				     struct done_list_struct *dl)
{
	struct tasklet_completion_status *tcs;

	if (!del_timer(&ascb->timer))
		return;

	tcs = ascb->uldd_task;
	ASD_DPRINTK("tmf tasklet complete\n");

	tcs->dl_opcode = dl->opcode;

	if (dl->opcode == TC_SSP_RESP) {
		tcs->tmf_state = asd_get_tmf_resp_tasklet(ascb, dl);
		tcs->tag_valid = ascb->tag_valid;
		tcs->tag = ascb->tag;
	}

	complete(ascb->completion);
	asd_ascb_free(ascb);
}
Exemple #15
0
static void asd_get_response_tasklet(struct asd_ascb *ascb,
				     struct done_list_struct *dl)
{
	struct asd_ha_struct *asd_ha = ascb->ha;
	struct sas_task *task = ascb->uldd_task;
	struct task_status_struct *ts = &task->task_status;
	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  size   = ((resp_sb->flags & 7) << 8) | resp_sb->len_lsb; */
	int  edb_id = ((resp_sb->flags & 0x70) >> 4)-1;
	struct asd_ascb *escb;
	struct asd_dma_tok *edb;
	void *r;

	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;
	}

	ts->buf_valid_size = 0;
	edb = asd_ha->seq.edb_arr[edb_id + escb->edb_index];
	r = edb->vaddr;
	if (task->task_proto == SAS_PROTO_SSP) {
		struct ssp_response_iu *iu =
			r + 16 + sizeof(struct ssp_frame_hdr);

		ts->residual = le32_to_cpu(*(__le32 *)r);
		ts->resp = SAS_TASK_COMPLETE;
		if (iu->datapres == 0)
			ts->stat = iu->status;
		else if (iu->datapres == 1)
			ts->stat = iu->resp_data[3];
		else if (iu->datapres == 2) {
			ts->stat = SAM_CHECK_COND;
			ts->buf_valid_size = min((u32) SAS_STATUS_BUF_SIZE,
					 be32_to_cpu(iu->sense_data_len));
			memcpy(ts->buf, iu->sense_data, ts->buf_valid_size);
			if (iu->status != SAM_CHECK_COND) {
				ASD_DPRINTK("device %llx sent sense data, but "
					    "stat(0x%x) is not CHECK_CONDITION"
					    "\n",
					    SAS_ADDR(task->dev->sas_addr),
					    ts->stat);
			}
		}
	}  else {
		struct ata_task_resp *resp = (void *) &ts->buf[0];

		ts->residual = le32_to_cpu(*(__le32 *)r);

		if (SAS_STATUS_BUF_SIZE >= sizeof(*resp)) {
			resp->frame_len = le16_to_cpu(*(__le16 *)(r+6));
			memcpy(&resp->ending_fis[0], r+16, 24);
			ts->buf_valid_size = sizeof(*resp);
		}
	}

	asd_invalidate_edb(escb, edb_id);
}
Exemple #16
0
static ssize_t asd_store_update_bios(struct device *dev,
	struct device_attribute *attr,
	const char *buf, size_t count)
{
	struct asd_ha_struct *asd_ha = dev_to_asd_ha(dev);
	char *cmd_ptr, *filename_ptr;
	struct bios_file_header header, *hdr_ptr;
	int res, i;
	u32 csum = 0;
	int flash_command = FLASH_CMD_NONE;
	int err = 0;

	cmd_ptr = kcalloc(count, 2, GFP_KERNEL);

	if (!cmd_ptr) {
		err = FAIL_OUT_MEMORY;
		goto out;
	}

	filename_ptr = cmd_ptr + count;
	res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
	if (res != 2) {
		err = FAIL_PARAMETERS;
		goto out1;
	}

	for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
		if (!memcmp(flash_command_table[i].command,
				 cmd_ptr, strlen(cmd_ptr))) {
			flash_command = flash_command_table[i].code;
			break;
		}
	}
	if (flash_command == FLASH_CMD_NONE) {
		err = FAIL_PARAMETERS;
		goto out1;
	}

	if (asd_ha->bios_status == FLASH_IN_PROGRESS) {
		err = FLASH_IN_PROGRESS;
		goto out1;
	}
	err = request_firmware(&asd_ha->bios_image,
				   filename_ptr,
				   &asd_ha->pcidev->dev);
	if (err) {
		asd_printk("Failed to load bios image file %s, error %d\n",
			   filename_ptr, err);
		err = FAIL_OPEN_BIOS_FILE;
		goto out1;
	}

	hdr_ptr = (struct bios_file_header *)asd_ha->bios_image->data;

	if ((hdr_ptr->contrl_id.vendor != asd_ha->pcidev->vendor ||
		hdr_ptr->contrl_id.device != asd_ha->pcidev->device) &&
		(hdr_ptr->contrl_id.sub_vendor != asd_ha->pcidev->vendor ||
		hdr_ptr->contrl_id.sub_device != asd_ha->pcidev->device)) {

		ASD_DPRINTK("The PCI vendor or device id does not match\n");
		ASD_DPRINTK("vendor=%x dev=%x sub_vendor=%x sub_dev=%x"
		" pci vendor=%x pci dev=%x\n",
		hdr_ptr->contrl_id.vendor,
		hdr_ptr->contrl_id.device,
		hdr_ptr->contrl_id.sub_vendor,
		hdr_ptr->contrl_id.sub_device,
		asd_ha->pcidev->vendor,
		asd_ha->pcidev->device);
		err = FAIL_CHECK_PCI_ID;
		goto out2;
	}

	if (hdr_ptr->filelen != asd_ha->bios_image->size) {
		err = FAIL_FILE_SIZE;
		goto out2;
	}

	/* calculate checksum */
	for (i = 0; i < hdr_ptr->filelen; i++)
		csum += asd_ha->bios_image->data[i];

	if ((csum & 0x0000ffff) != hdr_ptr->checksum) {
		ASD_DPRINTK("BIOS file checksum mismatch\n");
		err = FAIL_CHECK_SUM;
		goto out2;
	}
	if (flash_command == FLASH_CMD_UPDATE) {
		asd_ha->bios_status = FLASH_IN_PROGRESS;
		err = asd_write_flash_seg(asd_ha,
			&asd_ha->bios_image->data[sizeof(*hdr_ptr)],
			0, hdr_ptr->filelen-sizeof(*hdr_ptr));
		if (!err)
			err = asd_verify_flash_seg(asd_ha,
				&asd_ha->bios_image->data[sizeof(*hdr_ptr)],
				0, hdr_ptr->filelen-sizeof(*hdr_ptr));
	} else {
		asd_ha->bios_status = FLASH_IN_PROGRESS;
		err = asd_verify_flash_seg(asd_ha,
			&asd_ha->bios_image->data[sizeof(header)],
			0, hdr_ptr->filelen-sizeof(header));
	}

out2:
	release_firmware(asd_ha->bios_image);
out1:
	kfree(cmd_ptr);
out:
	asd_ha->bios_status = err;

	if (!err)
		return count;
	else
		return -err;
}
/**
 * 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;
	int leftover;

	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 SAS_PROTOCOL_SATA:
	case SAS_PROTOCOL_STP:
		scb->abort_task.proto_conn_rate = (1 << 5); /* STP */
		break;
	case SAS_PROTOCOL_SSP:
		scb->abort_task.proto_conn_rate  = (1 << 4); /* SSP */
		scb->abort_task.proto_conn_rate |= task->dev->linkrate;
		break;
	case SAS_PROTOCOL_SMP:
		break;
	default:
		break;
	}

	if (task->task_proto == SAS_PROTOCOL_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;
		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);
		goto out_done;
	case TF_TMF_NO_TAG + 0xFF00:
	case TF_TMF_TAG_FREE + 0xFF00: /* the tag is in the free list */
	case TF_TMF_NO_CONN_HANDLE + 0xFF00: /* no such device */
		res = TMF_RESP_FUNC_COMPLETE;
		goto out_done;
	case TF_TMF_NO_CTX + 0xFF00: /* not in seq, or proto != SSP */
		res = TMF_RESP_FUNC_ESUPP;
		goto out;
	}
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;
}
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;
	int leftover;
	DECLARE_TCS(tcs);
	DECLARE_COMPLETION_ONSTACK(completion);
	DECLARE_COMPLETION_ONSTACK(tascb_completion);

	tascb->completion = &tascb_completion;

	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);

	ascb = asd_ascb_alloc_list(asd_ha, &res, GFP_KERNEL);
	if (!ascb)
		return -ENOMEM;

	ascb->uldd_task = &tcs;
	ascb->completion = &completion;
	scb = ascb->scb;
	scb->header.opcode = SCB_ABORT_TASK;

	switch (task->task_proto) {
	case SAS_PROTOCOL_SATA:
	case SAS_PROTOCOL_STP:
		scb->abort_task.proto_conn_rate = (1 << 5); 
		break;
	case SAS_PROTOCOL_SSP:
		scb->abort_task.proto_conn_rate  = (1 << 4); 
		scb->abort_task.proto_conn_rate |= task->dev->linkrate;
		break;
	case SAS_PROTOCOL_SMP:
		break;
	default:
		break;
	}

	if (task->task_proto == SAS_PROTOCOL_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_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) {
		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) {
		
		res = TMF_RESP_FUNC_FAILED;
	} else {
		switch (tcs.dl_opcode) {
		default:
			res = asd_clear_nexus(task);
			
		case TC_NO_ERROR:
			break;
		case TF_NAK_RECV:
			res = TMF_RESP_INVALID_FRAME;
			break;
		case TF_TMF_TASK_DONE:	
			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: 
		case TF_TMF_NO_CONN_HANDLE: 
			res = TMF_RESP_FUNC_COMPLETE;
			break;
		case TF_TMF_NO_CTX: 
			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;
}
Exemple #19
0
static void asd_task_tasklet_complete(struct asd_ascb *ascb,
				      struct done_list_struct *dl)
{
	struct sas_task *task = ascb->uldd_task;
	struct task_status_struct *ts = &task->task_status;
	unsigned long flags;
	u8 opcode = dl->opcode;

	asd_can_dequeue(ascb->ha, 1);

Again:
	switch (opcode) {
	case TC_NO_ERROR:
		ts->resp = SAS_TASK_COMPLETE;
		ts->stat = SAM_GOOD;
		break;
	case TC_UNDERRUN:
		ts->resp = SAS_TASK_COMPLETE;
		ts->stat = SAS_DATA_UNDERRUN;
		ts->residual = le32_to_cpu(*(__le32 *)dl->status_block);
		break;
	case TC_OVERRUN:
		ts->resp = SAS_TASK_COMPLETE;
		ts->stat = SAS_DATA_OVERRUN;
		ts->residual = 0;
		break;
	case TC_SSP_RESP:
	case TC_ATA_RESP:
		ts->resp = SAS_TASK_COMPLETE;
		ts->stat = SAS_PROTO_RESPONSE;
		asd_get_response_tasklet(ascb, dl);
		break;
	case TF_OPEN_REJECT:
		ts->resp = SAS_TASK_UNDELIVERED;
		ts->stat = SAS_OPEN_REJECT;
		if (dl->status_block[1] & 2)
			ts->open_rej_reason = 1 + dl->status_block[2];
		else if (dl->status_block[1] & 1)
			ts->open_rej_reason = (dl->status_block[2] >> 4)+10;
		else
			ts->open_rej_reason = SAS_OREJ_UNKNOWN;
		break;
	case TF_OPEN_TO:
		ts->resp = SAS_TASK_UNDELIVERED;
		ts->stat = SAS_OPEN_TO;
		break;
	case TF_PHY_DOWN:
	case TU_PHY_DOWN:
		ts->resp = SAS_TASK_UNDELIVERED;
		ts->stat = SAS_PHY_DOWN;
		break;
	case TI_PHY_DOWN:
		ts->resp = SAS_TASK_COMPLETE;
		ts->stat = SAS_PHY_DOWN;
		break;
	case TI_BREAK:
	case TI_PROTO_ERR:
	case TI_NAK:
	case TI_ACK_NAK_TO:
	case TF_SMP_XMIT_RCV_ERR:
	case TC_ATA_R_ERR_RECV:
		ts->resp = SAS_TASK_COMPLETE;
		ts->stat = SAS_INTERRUPTED;
		break;
	case TF_BREAK:
	case TU_BREAK:
	case TU_ACK_NAK_TO:
	case TF_SMPRSP_TO:
		ts->resp = SAS_TASK_UNDELIVERED;
		ts->stat = SAS_DEV_NO_RESPONSE;
		break;
	case TF_NAK_RECV:
		ts->resp = SAS_TASK_COMPLETE;
		ts->stat = SAS_NAK_R_ERR;
		break;
	case TA_I_T_NEXUS_LOSS:
		opcode = dl->status_block[0];
		goto Again;
		break;
	case TF_INV_CONN_HANDLE:
		ts->resp = SAS_TASK_UNDELIVERED;
		ts->stat = SAS_DEVICE_UNKNOWN;
		break;
	case TF_REQUESTED_N_PENDING:
		ts->resp = SAS_TASK_UNDELIVERED;
		ts->stat = SAS_PENDING;
		break;
	case TC_TASK_CLEARED:
	case TA_ON_REQ:
		ts->resp = SAS_TASK_COMPLETE;
		ts->stat = SAS_ABORTED_TASK;
		break;

	case TF_NO_SMP_CONN:
	case TF_TMF_NO_CTX:
	case TF_TMF_NO_TAG:
	case TF_TMF_TAG_FREE:
	case TF_TMF_TASK_DONE:
	case TF_TMF_NO_CONN_HANDLE:
	case TF_IRTT_TO:
	case TF_IU_SHORT:
	case TF_DATA_OFFS_ERR:
		ts->resp = SAS_TASK_UNDELIVERED;
		ts->stat = SAS_DEV_NO_RESPONSE;
		break;

	case TC_LINK_ADM_RESP:
	case TC_CONTROL_PHY:
	case TC_RESUME:
	case TC_PARTIAL_SG_LIST:
	default:
		ASD_DPRINTK("%s: dl opcode: 0x%x?\n", __FUNCTION__, opcode);
		break;
	}