mirror of https://gitee.com/openkylin/linux.git
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/*
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* QLogic iSCSI HBA Driver
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* Copyright (c) 2003-2013 QLogic Corporation
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*
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* See LICENSE.qla4xxx for copyright and licensing details.
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*/
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/*
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*
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* qla4xxx_lookup_ddb_by_fw_index
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* This routine locates a device handle given the firmware device
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* database index. If device doesn't exist, returns NULL.
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*
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* Input:
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* ha - Pointer to host adapter structure.
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* fw_ddb_index - Firmware's device database index
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*
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* Returns:
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* Pointer to the corresponding internal device database structure
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*/
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static inline struct ddb_entry *
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qla4xxx_lookup_ddb_by_fw_index(struct scsi_qla_host *ha, uint32_t fw_ddb_index)
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{
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struct ddb_entry *ddb_entry = NULL;
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if ((fw_ddb_index < MAX_DDB_ENTRIES) &&
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(ha->fw_ddb_index_map[fw_ddb_index] !=
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(struct ddb_entry *) INVALID_ENTRY)) {
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ddb_entry = ha->fw_ddb_index_map[fw_ddb_index];
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}
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DEBUG3(printk("scsi%d: %s: ddb [%d], ddb_entry = %p\n",
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ha->host_no, __func__, fw_ddb_index, ddb_entry));
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return ddb_entry;
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}
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static inline void
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__qla4xxx_enable_intrs(struct scsi_qla_host *ha)
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{
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if (is_qla4022(ha) | is_qla4032(ha)) {
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writel(set_rmask(IMR_SCSI_INTR_ENABLE),
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&ha->reg->u1.isp4022.intr_mask);
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readl(&ha->reg->u1.isp4022.intr_mask);
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} else {
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writel(set_rmask(CSR_SCSI_INTR_ENABLE), &ha->reg->ctrl_status);
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readl(&ha->reg->ctrl_status);
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}
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set_bit(AF_INTERRUPTS_ON, &ha->flags);
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}
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static inline void
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__qla4xxx_disable_intrs(struct scsi_qla_host *ha)
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{
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if (is_qla4022(ha) | is_qla4032(ha)) {
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writel(clr_rmask(IMR_SCSI_INTR_ENABLE),
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&ha->reg->u1.isp4022.intr_mask);
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readl(&ha->reg->u1.isp4022.intr_mask);
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} else {
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writel(clr_rmask(CSR_SCSI_INTR_ENABLE), &ha->reg->ctrl_status);
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readl(&ha->reg->ctrl_status);
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}
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clear_bit(AF_INTERRUPTS_ON, &ha->flags);
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}
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static inline void
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qla4xxx_enable_intrs(struct scsi_qla_host *ha)
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{
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unsigned long flags;
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spin_lock_irqsave(&ha->hardware_lock, flags);
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__qla4xxx_enable_intrs(ha);
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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}
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static inline void
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qla4xxx_disable_intrs(struct scsi_qla_host *ha)
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{
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unsigned long flags;
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spin_lock_irqsave(&ha->hardware_lock, flags);
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__qla4xxx_disable_intrs(ha);
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spin_unlock_irqrestore(&ha->hardware_lock, flags);
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}
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