Initial import

1 files changed, 110 insertions, 0 deletions

diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.h b/drivers/scsi/ibmvscsi/ibmvscsi.h
new file mode 100644
index 000000000..7d64867c5
--- /dev/null
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.h
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+/* ------------------------------------------------------------
+ * ibmvscsi.h
+ * (C) Copyright IBM Corporation 1994, 2003
+ * Authors: Colin DeVilbiss (devilbis@us.ibm.com)
+ *          Santiago Leon (santil@us.ibm.com)
+ *          Dave Boutcher (sleddog@us.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
+ * USA
+ *
+ * ------------------------------------------------------------
+ * Emulation of a SCSI host adapter for Virtual I/O devices
+ *
+ * This driver allows the Linux SCSI peripheral drivers to directly
+ * access devices in the hosting partition, either on an iSeries
+ * hypervisor system or a converged hypervisor system.
+ */
+#ifndef IBMVSCSI_H
+#define IBMVSCSI_H
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/completion.h>
+#include <linux/interrupt.h>
+#include "viosrp.h"
+
+struct scsi_cmnd;
+struct Scsi_Host;
+
+/* Number of indirect bufs...the list of these has to fit in the
+ * additional data of the srp_cmd struct along with the indirect
+ * descriptor
+ */
+#define MAX_INDIRECT_BUFS 10
+
+#define IBMVSCSI_MAX_REQUESTS_DEFAULT 100
+#define IBMVSCSI_CMDS_PER_LUN_DEFAULT 16
+#define IBMVSCSI_MAX_SECTORS_DEFAULT 256 /* 32 * 8 = default max I/O 32 pages */
+#define IBMVSCSI_MAX_CMDS_PER_LUN 64
+
+/* ------------------------------------------------------------
+ * Data Structures
+ */
+/* an RPA command/response transport queue */
+struct crq_queue {
+	struct viosrp_crq *msgs;
+	int size, cur;
+	dma_addr_t msg_token;
+	spinlock_t lock;
+};
+
+/* a unit of work for the hosting partition */
+struct srp_event_struct {
+	union viosrp_iu *xfer_iu;
+	struct scsi_cmnd *cmnd;
+	struct list_head list;
+	void (*done) (struct srp_event_struct *);
+	struct viosrp_crq crq;
+	struct ibmvscsi_host_data *hostdata;
+	atomic_t free;
+	union viosrp_iu iu;
+	void (*cmnd_done) (struct scsi_cmnd *);
+	struct completion comp;
+	struct timer_list timer;
+	union viosrp_iu *sync_srp;
+	struct srp_direct_buf *ext_list;
+	dma_addr_t ext_list_token;
+};
+
+/* a pool of event structs for use */
+struct event_pool {
+	struct srp_event_struct *events;
+	u32 size;
+	int next;
+	union viosrp_iu *iu_storage;
+	dma_addr_t iu_token;
+};
+
+/* all driver data associated with a host adapter */
+struct ibmvscsi_host_data {
+	atomic_t request_limit;
+	int client_migrated;
+	int reset_crq;
+	int reenable_crq;
+	struct device *dev;
+	struct event_pool pool;
+	struct crq_queue queue;
+	struct tasklet_struct srp_task;
+	struct list_head sent;
+	struct Scsi_Host *host;
+	struct task_struct *work_thread;
+	wait_queue_head_t work_wait_q;
+	struct mad_adapter_info_data madapter_info;
+	struct capabilities caps;
+	dma_addr_t caps_addr;
+	dma_addr_t adapter_info_addr;
+};
+
+#endif				/* IBMVSCSI_H */