Advanced Systems Inc. SCSI Controller driver and ISA/VL front end.

I have only tested the ABP5140 card and only with a single CDROM drive
but it seems to work fine.  This driver relies on features found only in
the SCSI branch so will not work in -current until those changes
are brought in.  It also doesn't have any error handling code *yet*.
The goal is to use this driver as the development platform for the new
generic SCSI layer error recovery/handling code.

PCI and EISA front ends will show up as soon as I get my hands on
the cards.  There are also a few issues in the driver that I need
to clear up with AdvanSys before I can suggest sticking one of
these cards in your server. 8-)

Thanks to AdvanSys for releasing this code under a suitable copyright.

Obtained from:  Ported from the Linux driver writen by
		bobf@advansys.com (Bob Frey).

1 files changed, 236 insertions, 0 deletions

diff --git a/sys/dev/advansys/adv_isa.c b/sys/dev/advansys/adv_isa.c
new file mode 100644
index 000000000000..e7c89151f762
--- /dev/null
+++ b/sys/dev/advansys/adv_isa.c
@@ -0,0 +1,236 @@
+/*
+ * Device probe and attach routines for the following
+ * Advanced Systems Inc. SCSI controllers:
+ *
+ * Connectivity Products:
+ *	ABP5140 - Bus-Master PnP ISA 16 CDB
+ *
+ * Single Channel Products:
+ *	ABP542  - Bus-Master ISA 240 CDB
+ *	ABP5150 - Bus-Master ISA 240 CDB (shipped by HP with the 4020i CD-R drive)
+ *	ABP842  - Bus-Master VL 240 CDB
+ *
+ * Dual Channel Products:
+ *	ABP852 - Dual Channel Bus-Master VL 240 CDB Per Channel
+ *
+ * Copyright (c) 1996 Justin T. Gibbs.
+ * 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 immediately at the beginning of the file, without modification,
+ *    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.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * 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.
+ *
+ *      $Id$
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h> 
+
+#include <i386/isa/isa.h>
+#include <i386/isa/isa_device.h>
+
+#include <i386/scsi/advansys.h>
+
+#define ADV_ISA_MAX_DMA_ADDR    (0x00FFFFFFL)
+#define ADV_ISA_MAX_DMA_COUNT   (0x00FFFFFFL)
+
+#define ADV_VL_MAX_DMA_ADDR     (0x07FFFFFFL)
+#define ADV_VL_MAX_DMA_COUNT    (0x07FFFFFFL)
+
+/* Possible port addresses an ISA or VL adapter can live at */
+u_int16_t adv_isa_ioports[] =
+{
+	0x100,
+	0x110,	/* First selection in BIOS setup */
+	0x120,
+	0x130,	/* Second selection in BIOS setup */
+	0x140,
+	0x150,	/* Third selection in BIOS setup */
+	0x190,	/* Fourth selection in BIOS setup */
+	0x210,	/* Fifth selection in BIOS setup */
+	0x230,	/* Sixth selection in BIOS setup */
+	0x250,	/* Seventh selection in BIOS setup */
+	0x330 	/* Eighth and default selection in BIOS setup */
+};
+
+#define MAX_ISA_IOPORT_INDEX (sizeof(adv_isa_ioports)/sizeof(u_short) - 1)
+
+static	int	advisaprobe __P((struct isa_device *id));
+static  int	advisaattach __P((struct isa_device *id));
+static	void	adv_set_isapnp_wait_for_key __P((void));
+static	int	adv_find_signature __P((u_int16_t iobase));
+
+void	adv_isa_intr __P((int unit));
+
+struct isa_driver advdriver =
+{
+	advisaprobe,
+	advisaattach,
+	"adv"
+};
+
+static int
+advisaprobe(id)
+	struct isa_device *id;
+{
+	int	port_index;
+	int	max_port_index;
+
+	/*
+	 * Default to scanning all possible device locations.
+	 */
+	port_index = 0;
+	max_port_index = MAX_ISA_IOPORT_INDEX;
+
+	if (id->id_iobase > 0) {
+		for (;port_index <= max_port_index; port_index++)
+			if (id->id_iobase >= adv_isa_ioports[port_index])
+				break;
+		if ((port_index > max_port_index)
+		 || (id->id_iobase != adv_isa_ioports[port_index])) {
+			printf("adv%d: Invalid baseport of 0x%x specified. "
+				"Neerest valid baseport is 0x%x.  Failing "
+				"probe.\n", id->id_unit, id->id_iobase,
+				(port_index <= max_port_index) ?
+					adv_isa_ioports[port_index] :
+					adv_isa_ioports[max_port_index]);
+			return 0;
+		}
+		max_port_index = port_index;
+	}
+
+	/* Perform the actual probing */
+	adv_set_isapnp_wait_for_key();
+	for (;port_index <= max_port_index; port_index++) {
+		u_int16_t port_addr = adv_isa_ioports[port_index];
+		if (port_addr == 0)
+			/* Already been attached */
+			continue;
+		if (adv_find_signature(port_addr)) {
+			/*
+			 * Got one.  Now allocate our softc
+			 * and see if we can initialize the card.
+			 */
+			struct adv_softc *adv;
+			adv = adv_alloc(id->id_unit, port_addr);
+			if (adv == NULL)
+				return (0);
+
+			id->id_iobase = adv->iobase;
+			/*
+			 * Determine the chip version.
+			 */
+			adv->chip_version = ADV_INB(adv,
+						    ADV_NONEISA_CHIP_REVISION);
+			
+			if (adv_init(adv) != 0) {
+				adv_free(adv);
+				return (0);
+			}
+			switch (adv->type) {
+			case ADV_ISAPNP:
+				if (adv->chip_version == ADV_CHIP_VER_ASYN_BUG)
+					adv->needs_async_bug_fix = TARGET_BIT_VECTOR_SET;
+				/* Fall Through */
+			case ADV_ISA:
+				adv->max_dma_count = ADV_ISA_MAX_DMA_COUNT;
+				break;
+
+			case ADV_VL:
+				adv->max_dma_count = ADV_VL_MAX_DMA_COUNT;
+				break;
+			}
+			
+			if ((adv->type & ADV_ISAPNP) == ADV_ISAPNP) {
+			}
+
+			/* Determine our IRQ */
+			if (id->id_irq == 0 /* irq ? */)
+				id->id_irq = 1 << adv_get_chip_irq(adv);
+			else
+				adv_set_chip_irq(adv, ffs(id->id_irq) - 1);
+			
+			/* Mark as probed */
+			adv_isa_ioports[port_index] = 0;
+			break;
+		}
+	}
+
+	return 1;
+}
+
+static int
+advisaattach(id)
+	struct isa_device *id;
+{
+	struct adv_softc *adv;
+
+	adv = advsoftcs[id->id_unit];
+	return (adv_attach(adv));
+}
+
+static void
+adv_set_isapnp_wait_for_key(void)
+{
+	static	int isapnp_wait_set = 0;
+	if (isapnp_wait_set == 0) {
+		outb(ADV_ISA_PNP_PORT_ADDR, 0x02);
+		outb(ADV_ISA_PNP_PORT_WRITE, 0x02);
+		isapnp_wait_set++;
+	}
+	return;                 
+}
+
+/*
+ * Determine if there is a board at "iobase" by looking
+ * for the AdvanSys signatures.  Return 1 if a board is
+ * found, 0 otherwise.
+ */
+static int                         
+adv_find_signature(iobase)
+	u_int16_t iobase;
+{                            
+	u_int16_t signature;
+   
+	if (inb(iobase + ADV_SIGNATURE_BYTE) == ADV_1000_ID1B) {
+		signature = inw(iobase + ADV_SIGNATURE_WORD );
+		if ((signature == ADV_1000_ID0W)
+		 || (signature == ADV_1000_ID0W_FIX))
+			return (1);
+	}
+	return (0);
+}
+
+
+/*
+ * Handle an ISA interrupt.
+ * XXX should go away as soon as ISA interrupt handlers
+ * take a (void *) arg.
+ */
+void
+adv_isa_intr(unit)
+	int	unit;
+{
+	struct adv_softc *arg = advsoftcs[unit];
+	adv_intr((void *)arg);
+}