patch-2.4.3 linux/drivers/scsi/aic7xxx/aic7770_linux.c

• Lines: 147
• Date: Sun Mar 4 14:30:18 2001
• Orig file: v2.4.2/linux/drivers/scsi/aic7xxx/aic7770_linux.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.2/linux/drivers/scsi/aic7xxx/aic7770_linux.c linux/drivers/scsi/aic7xxx/aic7770_linux.c
@@ -0,0 +1,146 @@
+/*
+ * Linux driver attachment glue for aic7770 based controllers.
+ *
+ * Copyright (c) 2000 Adaptec Inc.
+ * 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,
+ *    without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU Public License ("GPL").
+ *
+ * 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: //depot/src/linux/drivers/scsi/aic7xxx/aic7770_linux.c#5 $
+ */
+
+#include "aic7xxx_osm.h"
+
+#define MINSLOT			1
+#define NUMSLOTS		16
+#define IDOFFSET		0x80
+
+int
+aic7770_linux_probe(Scsi_Host_Template *template)
+{
+#if defined(__i386__) || defined(__alpha__)
+	struct aic7770_identity *entry;
+	struct ahc_softc *ahc;
+	int i, slot;
+	int eisaBase;
+	int found;
+
+	if (aic7xxx_no_probe)
+		return (0);
+
+	eisaBase = 0x1000 + AHC_EISA_SLOT_OFFSET;
+	found = 0;
+	for (slot = 1; slot < NUMSLOTS; eisaBase+=0x1000, slot++) {
+		uint32_t eisa_id;
+		size_t	 id_size;
+
+		if (check_region(eisaBase, AHC_EISA_IOSIZE) != 0)
+			continue;
+
+		eisa_id = 0;
+		id_size = sizeof(eisa_id);
+		for (i = 0; i < 4; i++) {
+			/* VLcards require priming*/
+			outb(0x80 + i, eisaBase + IDOFFSET);
+			eisa_id |= inb(eisaBase + IDOFFSET + i)
+				   << ((id_size-i-1) * 8);
+		}
+		if (eisa_id & 0x80000000)
+			continue;  /* no EISA card in slot */
+
+		entry = aic7770_find_device(eisa_id);
+		if (entry != NULL) {
+			char	 buf[80];
+			char	*name;
+			int	 error;
+
+			/*
+			 * Allocate a softc for this card and
+			 * set it up for attachment by our
+			 * common detect routine.
+			 */
+			sprintf(buf, "ahc_eisa:%d", slot);
+			name = malloc(strlen(buf) + 1, M_DEVBUF, M_NOWAIT);
+			if (name == NULL)
+				break;
+			strcpy(name, buf);
+			ahc = ahc_alloc(template, name);
+			if (ahc == NULL) {
+				/*
+				 * If we can't allocate this one,
+				 * chances are we won't be able to
+				 * allocate future card structures.
+				 */
+				break;
+			}
+			ahc->tag = BUS_SPACE_PIO;
+			ahc->bsh.ioport = eisaBase;
+			error = aic7770_config(ahc, entry);
+			if (error != 0) {
+				ahc_free(ahc);
+				continue;
+			}
+			found++;
+		}
+	}
+	return (found);
+#else
+	return (0);
+#endif
+}
+
+int
+aic7770_map_registers(struct ahc_softc *ahc)
+{
+	/*
+	 * Lock out other contenders for our i/o space.
+	 */
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,0)
+	request_region(ahc->bsh.ioport, AHC_EISA_IOSIZE, "aic7xxx");
+#else
+	if (request_region(ahc->bsh.ioport, AHC_EISA_IOSIZE, "aic7xxx") == 0)
+		return (ENOMEM);
+#endif
+
+	return (0);
+}
+
+int
+aic7770_map_int(struct ahc_softc *ahc, u_int irq, int shared)
+{
+	int error;
+
+	if (shared)
+		shared = SA_SHIRQ;
+
+	ahc->platform_data->irq = irq;
+	error = request_irq(ahc->platform_data->irq, aic7xxx_isr,
+			    SA_INTERRUPT|shared, "aic7xxx", ahc);
+	if (error < 0)
+		error = request_irq(ahc->platform_data->irq, aic7xxx_isr,
+				    shared, "aic7xxx", ahc);
+	
+	return (-error);
+}