/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * QLogic iSCSI HBA Driver
 * Copyright (c)  2003-2013 QLogic Corporation
 */

/*
 *
 * qla4xxx_lookup_ddb_by_fw_index
 *      This routine locates a device handle given the firmware device
 *      database index.  If device doesn't exist, returns NULL.
 *
 * Input:
 *      ha - Pointer to host adapter structure.
 *      fw_ddb_index - Firmware's device database index
 *
 * Returns:
 *      Pointer to the corresponding internal device database structure
 */
static inline struct ddb_entry *
qla4xxx_lookup_ddb_by_fw_index(struct scsi_qla_host *ha, uint32_t fw_ddb_index)
{
        struct ddb_entry *ddb_entry = NULL;

        if ((fw_ddb_index < MAX_DDB_ENTRIES) &&
            (ha->fw_ddb_index_map[fw_ddb_index] !=
                (struct ddb_entry *) INVALID_ENTRY)) {
                ddb_entry = ha->fw_ddb_index_map[fw_ddb_index];
        }

        DEBUG3(printk("scsi%d: %s: ddb [%d], ddb_entry = %p\n",
            ha->host_no, __func__, fw_ddb_index, ddb_entry));

        return ddb_entry;
}

static inline void
__qla4xxx_enable_intrs(struct scsi_qla_host *ha)
{
        if (is_qla4022(ha) | is_qla4032(ha)) {
                writel(set_rmask(IMR_SCSI_INTR_ENABLE),
                       &ha->reg->u1.isp4022.intr_mask);
                readl(&ha->reg->u1.isp4022.intr_mask);
        } else {
                writel(set_rmask(CSR_SCSI_INTR_ENABLE), &ha->reg->ctrl_status);
                readl(&ha->reg->ctrl_status);
        }
        set_bit(AF_INTERRUPTS_ON, &ha->flags);
}

static inline void
__qla4xxx_disable_intrs(struct scsi_qla_host *ha)
{
        if (is_qla4022(ha) | is_qla4032(ha)) {
                writel(clr_rmask(IMR_SCSI_INTR_ENABLE),
                       &ha->reg->u1.isp4022.intr_mask);
                readl(&ha->reg->u1.isp4022.intr_mask);
        } else {
                writel(clr_rmask(CSR_SCSI_INTR_ENABLE), &ha->reg->ctrl_status);
                readl(&ha->reg->ctrl_status);
        }
        clear_bit(AF_INTERRUPTS_ON, &ha->flags);
}

static inline void
qla4xxx_enable_intrs(struct scsi_qla_host *ha)
{
        unsigned long flags;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        __qla4xxx_enable_intrs(ha);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static inline void
qla4xxx_disable_intrs(struct scsi_qla_host *ha)
{
        unsigned long flags;

        spin_lock_irqsave(&ha->hardware_lock, flags);
        __qla4xxx_disable_intrs(ha);
        spin_unlock_irqrestore(&ha->hardware_lock, flags);
}

static inline int qla4xxx_get_chap_type(struct ql4_chap_table *chap_entry)
{
        int type;

        if (chap_entry->flags & BIT_7)
                type = LOCAL_CHAP;
        else
                type = BIDI_CHAP;

        return type;
}