[SCSI] Initial Commit of qla4xxx

open-iSCSI driver for Qlogic Corporation's iSCSI HBAs

Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Signed-off-by: David Somayajulu <david.somayajulu@qlogic.com>
Signed-off-by: Doug Maxey <dwm@bubba.enoyolf.org>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 84 insertions, 0 deletions

diff --git a/drivers/scsi/qla4xxx/ql4_inline.h b/drivers/scsi/qla4xxx/ql4_inline.h
new file mode 100644
index 000000000000..0d61797af7da
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_inline.h
@@ -0,0 +1,84 @@
+/*
+ * QLogic iSCSI HBA Driver
+ * Copyright (c)  2003-2006 QLogic Corporation
+ *
+ * See LICENSE.qla4xxx for copyright and licensing details.
+ */
+
+/*
+ *
+ * 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: index [%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)) {
+                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)) {
+                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);
+}