lpfc_attr.c

来自「linux 内核源代码」· C语言 代码 · 共 2,217 行 · 第 1/5 页

		case MBX_READ_LA:
		case MBX_READ_LA64:
		case MBX_REG_LOGIN:
		case MBX_REG_LOGIN64:
		case MBX_CONFIG_PORT:
		case MBX_RUN_BIU_DIAG:
			printk(KERN_WARNING "mbox_read: Illegal Command 0x%x\n",
			       phba->sysfs_mbox.mbox->mb.mbxCommand);
			sysfs_mbox_idle(phba);
			spin_unlock_irq(&phba->hbalock);
			return -EPERM;
		default:
			printk(KERN_WARNING "mbox_read: Unknown Command 0x%x\n",
			       phba->sysfs_mbox.mbox->mb.mbxCommand);
			sysfs_mbox_idle(phba);
			spin_unlock_irq(&phba->hbalock);
			return -EPERM;
		}

		phba->sysfs_mbox.mbox->vport = vport;

		if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO) {
			sysfs_mbox_idle(phba);
			spin_unlock_irq(&phba->hbalock);
			return  -EAGAIN;
		}

		if ((vport->fc_flag & FC_OFFLINE_MODE) ||
		    (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE))){

			spin_unlock_irq(&phba->hbalock);
			rc = lpfc_sli_issue_mbox (phba,
						  phba->sysfs_mbox.mbox,
						  MBX_POLL);
			spin_lock_irq(&phba->hbalock);

		} else {
			spin_unlock_irq(&phba->hbalock);
			rc = lpfc_sli_issue_mbox_wait (phba,
						       phba->sysfs_mbox.mbox,
				lpfc_mbox_tmo_val(phba,
				    phba->sysfs_mbox.mbox->mb.mbxCommand) * HZ);
			spin_lock_irq(&phba->hbalock);
		}

		if (rc != MBX_SUCCESS) {
			if (rc == MBX_TIMEOUT) {
				phba->sysfs_mbox.mbox = NULL;
			}
			sysfs_mbox_idle(phba);
			spin_unlock_irq(&phba->hbalock);
			return  (rc == MBX_TIMEOUT) ? -ETIME : -ENODEV;
		}
		phba->sysfs_mbox.state = SMBOX_READING;
	}
	else if (phba->sysfs_mbox.offset != off ||
		 phba->sysfs_mbox.state  != SMBOX_READING) {
		printk(KERN_WARNING  "mbox_read: Bad State\n");
		sysfs_mbox_idle(phba);
		spin_unlock_irq(&phba->hbalock);
		return -EAGAIN;
	}

	memcpy(buf, (uint8_t *) & phba->sysfs_mbox.mbox->mb + off, count);

	phba->sysfs_mbox.offset = off + count;

	if (phba->sysfs_mbox.offset == MAILBOX_CMD_SIZE)
		sysfs_mbox_idle(phba);

	spin_unlock_irq(&phba->hbalock);

	return count;
}

static struct bin_attribute sysfs_mbox_attr = {
	.attr = {
		.name = "mbox",
		.mode = S_IRUSR | S_IWUSR,
	},
	.size = MAILBOX_CMD_SIZE,
	.read = sysfs_mbox_read,
	.write = sysfs_mbox_write,
};

int
lpfc_alloc_sysfs_attr(struct lpfc_vport *vport)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
	int error;

	error = sysfs_create_bin_file(&shost->shost_classdev.kobj,
				      &sysfs_ctlreg_attr);
	if (error)
		goto out;

	error = sysfs_create_bin_file(&shost->shost_classdev.kobj,
				      &sysfs_mbox_attr);
	if (error)
		goto out_remove_ctlreg_attr;

	return 0;
out_remove_ctlreg_attr:
	sysfs_remove_bin_file(&shost->shost_classdev.kobj, &sysfs_ctlreg_attr);
out:
	return error;
}

void
lpfc_free_sysfs_attr(struct lpfc_vport *vport)
{
	struct Scsi_Host *shost = lpfc_shost_from_vport(vport);

	sysfs_remove_bin_file(&shost->shost_classdev.kobj, &sysfs_mbox_attr);
	sysfs_remove_bin_file(&shost->shost_classdev.kobj, &sysfs_ctlreg_attr);
}


/*
 * Dynamic FC Host Attributes Support
 */

static void
lpfc_get_host_port_id(struct Scsi_Host *shost)
{
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;

	/* note: fc_myDID already in cpu endianness */
	fc_host_port_id(shost) = vport->fc_myDID;
}

static void
lpfc_get_host_port_type(struct Scsi_Host *shost)
{
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	spin_lock_irq(shost->host_lock);

	if (vport->port_type == LPFC_NPIV_PORT) {
		fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
	} else if (lpfc_is_link_up(phba)) {
		if (phba->fc_topology == TOPOLOGY_LOOP) {
			if (vport->fc_flag & FC_PUBLIC_LOOP)
				fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
			else
				fc_host_port_type(shost) = FC_PORTTYPE_LPORT;
		} else {
			if (vport->fc_flag & FC_FABRIC)
				fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
			else
				fc_host_port_type(shost) = FC_PORTTYPE_PTP;
		}
	} else
		fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;

	spin_unlock_irq(shost->host_lock);
}

static void
lpfc_get_host_port_state(struct Scsi_Host *shost)
{
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	spin_lock_irq(shost->host_lock);

	if (vport->fc_flag & FC_OFFLINE_MODE)
		fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
	else {
		switch (phba->link_state) {
		case LPFC_LINK_UNKNOWN:
		case LPFC_LINK_DOWN:
			fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
			break;
		case LPFC_LINK_UP:
		case LPFC_CLEAR_LA:
		case LPFC_HBA_READY:
			/* Links up, beyond this port_type reports state */
			fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
			break;
		case LPFC_HBA_ERROR:
			fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
			break;
		default:
			fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
			break;
		}
	}

	spin_unlock_irq(shost->host_lock);
}

static void
lpfc_get_host_speed(struct Scsi_Host *shost)
{
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;

	spin_lock_irq(shost->host_lock);

	if (lpfc_is_link_up(phba)) {
		switch(phba->fc_linkspeed) {
			case LA_1GHZ_LINK:
				fc_host_speed(shost) = FC_PORTSPEED_1GBIT;
			break;
			case LA_2GHZ_LINK:
				fc_host_speed(shost) = FC_PORTSPEED_2GBIT;
			break;
			case LA_4GHZ_LINK:
				fc_host_speed(shost) = FC_PORTSPEED_4GBIT;
			break;
			case LA_8GHZ_LINK:
				fc_host_speed(shost) = FC_PORTSPEED_8GBIT;
			break;
			default:
				fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
			break;
		}
	}

	spin_unlock_irq(shost->host_lock);
}

static void
lpfc_get_host_fabric_name (struct Scsi_Host *shost)
{
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	u64 node_name;

	spin_lock_irq(shost->host_lock);

	if ((vport->fc_flag & FC_FABRIC) ||
	    ((phba->fc_topology == TOPOLOGY_LOOP) &&
	     (vport->fc_flag & FC_PUBLIC_LOOP)))
		node_name = wwn_to_u64(phba->fc_fabparam.nodeName.u.wwn);
	else
		/* fabric is local port if there is no F/FL_Port */
		node_name = wwn_to_u64(vport->fc_nodename.u.wwn);

	spin_unlock_irq(shost->host_lock);

	fc_host_fabric_name(shost) = node_name;
}

static struct fc_host_statistics *
lpfc_get_stats(struct Scsi_Host *shost)
{
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_sli   *psli = &phba->sli;
	struct fc_host_statistics *hs = &phba->link_stats;
	struct lpfc_lnk_stat * lso = &psli->lnk_stat_offsets;
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
	unsigned long seconds;
	int rc = 0;

	/*
	 * prevent udev from issuing mailbox commands until the port is
	 * configured.
	 */
	if (phba->link_state < LPFC_LINK_DOWN ||
	    !phba->mbox_mem_pool ||
	    (phba->sli.sli_flag & LPFC_SLI2_ACTIVE) == 0)
		return NULL;

	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
		return NULL;

	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return NULL;
	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));

	pmb = &pmboxq->mb;
	pmb->mbxCommand = MBX_READ_STATUS;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;
	pmboxq->vport = vport;

	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
		(!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
	else
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
		if (rc != MBX_TIMEOUT)
			mempool_free(pmboxq, phba->mbox_mem_pool);
		return NULL;
	}

	memset(hs, 0, sizeof (struct fc_host_statistics));

	hs->tx_frames = pmb->un.varRdStatus.xmitFrameCnt;
	hs->tx_words = (pmb->un.varRdStatus.xmitByteCnt * 256);
	hs->rx_frames = pmb->un.varRdStatus.rcvFrameCnt;
	hs->rx_words = (pmb->un.varRdStatus.rcvByteCnt * 256);

	memset(pmboxq, 0, sizeof (LPFC_MBOXQ_t));
	pmb->mbxCommand = MBX_READ_LNK_STAT;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;
	pmboxq->vport = vport;

	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
	    (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
	else
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
		if (rc != MBX_TIMEOUT)
			mempool_free(pmboxq, phba->mbox_mem_pool);
		return NULL;
	}

	hs->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
	hs->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
	hs->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
	hs->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
	hs->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
	hs->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
	hs->error_frames = pmb->un.varRdLnk.crcCnt;

	hs->link_failure_count -= lso->link_failure_count;
	hs->loss_of_sync_count -= lso->loss_of_sync_count;
	hs->loss_of_signal_count -= lso->loss_of_signal_count;
	hs->prim_seq_protocol_err_count -= lso->prim_seq_protocol_err_count;
	hs->invalid_tx_word_count -= lso->invalid_tx_word_count;
	hs->invalid_crc_count -= lso->invalid_crc_count;
	hs->error_frames -= lso->error_frames;

	if (phba->fc_topology == TOPOLOGY_LOOP) {
		hs->lip_count = (phba->fc_eventTag >> 1);
		hs->lip_count -= lso->link_events;
		hs->nos_count = -1;
	} else {
		hs->lip_count = -1;
		hs->nos_count = (phba->fc_eventTag >> 1);
		hs->nos_count -= lso->link_events;
	}

	hs->dumped_frames = -1;

	seconds = get_seconds();
	if (seconds < psli->stats_start)
		hs->seconds_since_last_reset = seconds +
				((unsigned long)-1 - psli->stats_start);
	else
		hs->seconds_since_last_reset = seconds - psli->stats_start;

	mempool_free(pmboxq, phba->mbox_mem_pool);

	return hs;
}

static void
lpfc_reset_stats(struct Scsi_Host *shost)
{
	struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
	struct lpfc_hba   *phba = vport->phba;
	struct lpfc_sli   *psli = &phba->sli;
	struct lpfc_lnk_stat *lso = &psli->lnk_stat_offsets;
	LPFC_MBOXQ_t *pmboxq;
	MAILBOX_t *pmb;
	int rc = 0;

	if (phba->sli.sli_flag & LPFC_BLOCK_MGMT_IO)
		return;

	pmboxq = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
	if (!pmboxq)
		return;
	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));

	pmb = &pmboxq->mb;
	pmb->mbxCommand = MBX_READ_STATUS;
	pmb->mbxOwner = OWN_HOST;
	pmb->un.varWords[0] = 0x1; /* reset request */
	pmboxq->context1 = NULL;
	pmboxq->vport = vport;

	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
		(!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
	else
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
		if (rc != MBX_TIMEOUT)
			mempool_free(pmboxq, phba->mbox_mem_pool);
		return;
	}

	memset(pmboxq, 0, sizeof(LPFC_MBOXQ_t));
	pmb->mbxCommand = MBX_READ_LNK_STAT;
	pmb->mbxOwner = OWN_HOST;
	pmboxq->context1 = NULL;
	pmboxq->vport = vport;

	if ((vport->fc_flag & FC_OFFLINE_MODE) ||
	    (!(psli->sli_flag & LPFC_SLI2_ACTIVE)))
		rc = lpfc_sli_issue_mbox(phba, pmboxq, MBX_POLL);
	else
		rc = lpfc_sli_issue_mbox_wait(phba, pmboxq, phba->fc_ratov * 2);

	if (rc != MBX_SUCCESS) {
		if (rc != MBX_TIMEOUT)
			mempool_free( pmboxq, phba->mbox_mem_pool);
		return;
	}

	lso->link_failure_count = pmb->un.varRdLnk.linkFailureCnt;
	lso->loss_of_sync_count = pmb->un.varRdLnk.lossSyncCnt;
	lso->loss_of_signal_count = pmb->un.varRdLnk.lossSignalCnt;
	lso->prim_seq_protocol_err_count = pmb->un.varRdLnk.primSeqErrCnt;
	lso->invalid_tx_word_count = pmb->un.varRdLnk.invalidXmitWord;
	lso->invalid_crc_count = pmb->un.varRdLnk.crcCnt;
	lso->error_frames = pmb->un.varRdLnk.crcCnt;
	lso->link_events = (phba->fc_eventTag >> 1);

	psli->stats_start = get_seconds();

	mempool_free(pmboxq, phba->mbox_mem_pool);

	return;
}

/*
 * The LPFC driver treats linkdown handling as target loss events so there
 * are no sysfs handlers for link_down_tmo.
 */

static struct lpfc_nodelist *
lpfc_get_node_by_target(struct scsi_target *starget)
{
	struct Scsi_Host  *shost = dev_to_shost(starget->dev.parent);
	struct lpfc_vport *vport