PCI portion of the Buslogic SCSI driver. Needs to be tested and more

PCI ids for Buslogic products added.

1 files changed, 134 insertions, 0 deletions

diff --git a/sys/pci/bt9xx.c b/sys/pci/bt9xx.c
new file mode 100644
index 0000000..a982139
--- /dev/null
+++ b/sys/pci/bt9xx.c
@@ -0,0 +1,134 @@
+/*
+ * Product specific probe and attach routines for:
+ *      Buslogic BT946 and BT956 SCSI controllers
+ *
+ * Copyright (c) 1995 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. Absolutely no warranty of function or purpose is made by the author
+ *    Justin T. Gibbs.
+ * 4. Modifications may be freely made to this file if the above conditions
+ *    are met.
+ *
+ *	$Id$
+ */
+
+#include <pci.h>
+#if NPCI > 0
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/malloc.h>
+#include <sys/kernel.h>
+#include <scsi/scsi_all.h>
+#include <scsi/scsiconf.h>
+#include <pci/pcireg.h>
+#include <pci/pcivar.h>
+#include <i386/scsi/btreg.h>
+
+/* XXX Need more device IDs */
+#define PCI_BASEADR0	PCI_MAP_REG_START
+#define PCI_DEVICE_ID_BUSLOGIC_946	0x104B1040ul
+
+static char* bt_pci_probe __P((pcici_t tag, pcidi_t type));
+static void bt_pci_attach __P((pcici_t config_id, int unit));
+static int bt_pci_intr __P((void *arg));
+
+struct  pci_device bt_pci_driver = {
+	"bt",
+        bt_pci_probe,
+        bt_pci_attach,
+        &bt_unit,
+	NULL
+};
+
+DATA_SET (pcidevice_set, bt_pci_driver);
+
+static  char*
+bt_pci_probe (pcici_t tag, pcidi_t type)
+{
+	switch(type) {
+		case PCI_DEVICE_ID_BUSLOGIC_946:
+			return ("Buslogic 946 SCSI host adapter");
+			break;
+		default:
+			break;
+	}
+	return (0);
+
+}
+
+static void
+bt_pci_attach(config_id, unit)
+	pcici_t config_id;
+	int	unit;
+{
+	u_long io_port;
+	u_long id;
+	unsigned opri = 0;
+	struct bt_data *bt;
+
+        if(!(io_port = pci_conf_read(config_id, PCI_BASEADR0)))
+		return;
+	/*
+	 * The first bit of PCI_BASEADR0 is always
+	 * set hence we mask it off.
+	 */
+	io_port &= 0xfffffffe;
+
+	if(!(bt = bt_alloc(unit, io_port)))
+		return;  /* XXX PCI code should take return status */
+
+	if(!(pci_map_int(config_id, bt_pci_intr, (void *)bt, &bio_imask))) {
+		bt_free(bt);
+		return;
+	}
+	/*
+	 * Protect ourself from spurrious interrupts during
+	 * intialization and attach.  We should really rely
+	 * on interrupts during attach, but we don't have
+	 * access to our interrupts during ISA probes, so until
+	 * that changes, we mask our interrupts during attach
+	 * too.
+	 */
+	opri = splbio();
+
+	if(bt_init(bt)){
+		bt_free(bt);
+		splx(opri);
+		return; /* XXX PCI code should take return status */
+	}
+
+	bt_attach(bt);
+
+	splx(opri);
+	return;
+}
+
+
+/*      
+ * Handle an PCI interrupt.
+ * XXX should go away as soon as PCI interrupt handlers
+ * return void.
+ */
+static int
+bt_pci_intr(arg)
+	void *arg;
+{       
+        btintr(arg);
+	return (1);  /*
+		      * XXX: Always say we handle the interrupt.
+		      * won't work with edge-triggered ints.
+		      */
+}
+
+
+#endif /* NPCI > 0 */