Alpha-version (or is that Intel?) of the I2O random block storage driver.

Inspired by ld_iop.c from NetBSD but written by me mostly.  Tested on the
Adaptec 2100S RAID card, got it working at Usenix in a weird hackathon setup.

1 files changed, 99 insertions, 0 deletions

diff --git a/sys/dev/i2o/ioprbsvar.h b/sys/dev/i2o/ioprbsvar.h
new file mode 100644
index 00000000000..955acf96b0b
--- /dev/null
+++ b/sys/dev/i2o/ioprbsvar.h
@@ -0,0 +1,99 @@
+/*	$OpenBSD: ioprbsvar.h,v 1.1 2001/06/29 06:05:03 niklas Exp $	*/
+
+/*
+ * Copyright (c) 2001 Niklas Hallqvist
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _I2O_IOPRBSVAR_H_
+#define	_I2O_IOPRBSVAR_H_
+
+/*
+ * A command contol block, one for each corresponding command index of the
+ * controller.
+ */
+struct ioprbs_ccb {
+	TAILQ_ENTRY(ioprbs_ccb) ic_chain;
+	struct scsi_xfer *ic_xs;
+#if 0
+	struct aac_fib *ac_fib;		/* FIB associated with this command */
+	bus_addr_t ac_fibphys;		/* bus address of the FIB */
+	bus_dmamap_t ac_dmamap_xfer;
+	struct aac_sg_table *ac_sgtable;/* pointer to s/g table in command */
+#endif
+	int ic_timeout;
+	u_int32_t ic_blockno;
+	u_int32_t ic_blockcnt;
+	u_int8_t ic_flags;
+#define IOPRBS_ICF_WATCHDOG 	0x1
+#define IOPRBS_ICF_COMPLETED 	0x2
+};
+
+/* XXX What is correct? */
+#define IOPRBS_MAX_CCBS 256
+
+struct ioprbs_softc {
+	struct	device sc_dv;			/* Generic device data */
+	struct	scsi_link sc_link;	/* Virtual SCSI bus for cache devs */
+	struct	iop_initiator sc_ii;
+	struct	iop_initiator sc_eventii;
+
+	int	sc_flags;
+	int	sc_secperunit;			/* # sectors in total */
+	int	sc_secsize;			/* sector size in bytes */
+	int	sc_maxxfer;			/* max xfer size in bytes */
+	int	sc_maxqueuecnt;			/* maximum h/w queue depth */
+	int	sc_queuecnt;			/* current h/w queue depth */
+	int	sc_ncylinders;			/* # cylinders */
+	int	sc_nheads;			/* # heads */
+	int	sc_nsectors;			/* # sectors per track */
+
+	struct ioprbs_ccb sc_ccbs[IOPRBS_MAX_CCBS];
+	TAILQ_HEAD(, ioprbs_ccb) sc_free_ccb, sc_ccbq;
+	/* commands on hold for controller resources */
+	TAILQ_HEAD(, ioprbs_ccb) sc_ready;
+	/* commands which have been returned by the controller */
+	LIST_HEAD(, scsi_xfer) sc_queue;
+	struct scsi_xfer *sc_queuelast;
+};
+
+#define	IOPRBS_CLAIMED		0x01
+#define	IOPRBS_NEW_EVTMASK	0x02
+#define IOPRBS_ENABLED		0x04
+
+#define	IOPRBS_TIMEOUT		(30 * 1000)
+#define IOPRBS_BLOCK_SIZE	512
+
+/*
+ * Wait this long for a lost interrupt to get detected.
+ */
+#define IOPRBS_WATCH_TIMEOUT	10000		/* 10000 * 1ms = 10s */
+
+
+/* XXX These have to become spinlocks in case of SMP */
+#define IOPRBS_LOCK(sc) splbio()
+#define IOPRBS_UNLOCK(sc, lock) splx(lock)
+typedef int ioprbs_lock_t;
+
+#endif	/* !_I2O_IOPRMSVAR_H_ */