patch-2.4.10 linux/drivers/scsi/lasi700.c

• Lines: 189
• Date: Sun Sep 9 11:58:36 2001
• Orig file: v2.4.9/linux/drivers/scsi/lasi700.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.9/linux/drivers/scsi/lasi700.c linux/drivers/scsi/lasi700.c
@@ -0,0 +1,188 @@
+/* -*- mode: c; c-basic-offset: 8 -*- */
+
+/* PARISC LASI driver for the 53c700 chip
+ *
+ * Copyright (C) 2001 by James.Bottomley@HansenPartnership.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., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**-----------------------------------------------------------------------------
+ */
+
+/*
+ * Many thanks to Richard Hirst <rhirst@linuxcare.com> for patiently
+ * debugging this driver on the parisc architecture and suggesting
+ * many improvements and bug fixes.
+ *
+ * Thanks also go to Linuxcare Inc. for providing several PARISC
+ * machines for me to debug the driver on.
+ */
+
+#ifndef __hppa__
+#error "lasi700 only compiles on hppa architecture"
+#endif
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/blk.h>
+#include <linux/sched.h>
+#include <linux/version.h>
+#include <linux/config.h>
+#include <linux/ioport.h>
+
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/hardware.h>
+#include <asm/delay.h>
+#include <asm/gsc.h>
+
+#include <linux/module.h>
+
+#include "scsi.h"
+#include "hosts.h"
+#include "constants.h"
+
+#include "lasi700.h"
+#include "53c700.h"
+
+#ifdef MODULE
+
+char *lasi700;			/* command line from insmod */
+
+MODULE_AUTHOR("James Bottomley");
+MODULE_DESCRIPTION("lasi700 SCSI Driver");
+MODULE_LICENSE("GPL");
+MODULE_PARM(lasi700, "s");
+
+#endif
+
+#ifdef MODULE
+#define ARG_SEP ' '
+#else
+#define ARG_SEP ','
+#endif
+
+static unsigned long __initdata opt_base;
+static int __initdata opt_irq;
+
+static int __init
+param_setup(char *string)
+{
+	char *pos = string, *next;
+
+	while(pos != NULL && (next = strchr(pos, ':')) != NULL) {
+		int val = (int)simple_strtoul(++next, NULL, 0);
+		
+		if(!strncmp(pos, "addr:", 5))
+			opt_base = val;
+		else if(!strncmp(pos, "irq:", 4))
+			opt_irq = val;
+
+		if((pos = strchr(pos, ARG_SEP)) != NULL)
+			pos++;
+	}
+	return 1;
+}
+
+#ifndef MODULE
+__setup("lasi700=", param_setup);
+#endif
+
+static Scsi_Host_Template __initdata *host_tpnt = NULL;
+static int __initdata host_count = 0;
+static struct parisc_device_id lasi700_scsi_tbl[] = {
+	LASI700_ID_TABLE,
+	{ 0 }
+};
+
+MODULE_DEVICE_TABLE(parisc, lasi700_scsi_tbl);
+
+static struct parisc_driver lasi700_driver = LASI700_DRIVER;
+
+static int __init
+lasi700_detect(Scsi_Host_Template *tpnt)
+{
+	host_tpnt = tpnt;
+
+#ifdef MODULE
+	if(lasi700)
+		param_setup(lasi700);
+#endif
+
+	register_parisc_driver(&lasi700_driver);
+
+	return (host_count != 0);
+}
+
+static int __init
+lasi700_driver_callback(struct parisc_device *dev)
+{
+	unsigned long base = dev->hpa + LASI_SCSI_CORE_OFFSET;
+	int irq = busdevice_alloc_irq(dev);
+	struct Scsi_Host *host;
+	struct NCR_700_Host_Parameters *hostdata =
+		kmalloc(sizeof(struct NCR_700_Host_Parameters),
+			GFP_KERNEL);
+	if(hostdata == NULL) {
+		printk(KERN_ERR "lasi700: Failed to allocate host data\n");
+		return 1;
+	}
+	memset(hostdata, 0, sizeof(struct NCR_700_Host_Parameters));
+	if(request_mem_region(base, 64, "lasi700") == NULL) {
+		printk(KERN_ERR "lasi700: Failed to claim memory region\n");
+		kfree(hostdata);
+		return 1;
+	}
+	hostdata->base = base;
+	hostdata->differential = 0;
+	hostdata->clock = LASI700_CLOCK;
+	hostdata->force_le_on_be = 1;
+	if((host = NCR_700_detect(host_tpnt, hostdata)) == NULL) {
+		kfree(hostdata);
+		release_mem_region(host->base, 64);
+		return 1;
+	}
+	host->irq = irq;
+	if(request_irq(irq, NCR_700_intr, SA_SHIRQ, "lasi700", host)) {
+		printk(KERN_ERR "lasi700: irq problem, detatching\n");
+		scsi_unregister(host);
+		NCR_700_release(host);
+		return 1;
+	}
+	host_count++;
+	return 0;
+}
+
+static int
+lasi700_release(struct Scsi_Host *host)
+{
+	struct D700_Host_Parameters *hostdata = 
+		(struct D700_Host_Parameters *)host->hostdata[0];
+
+	NCR_700_release(host);
+	kfree(hostdata);
+	free_irq(host->irq, host);
+	release_mem_region(host->base, 64);
+	return 1;
+}
+
+static Scsi_Host_Template driver_template = LASI700_SCSI;
+
+#include "scsi_module.c"