[SCSI] SNI RM 53c710 driver

This patch adds a SCSI driver for the onboard 53c710 chip of some
SNI RM machines.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

3 files changed, 169 insertions, 0 deletions

diff --git a/drivers/scsi/Kconfig b/drivers/scsi/Kconfig
index 60f582727185..0133f3a6977d 100644
--- a/drivers/scsi/Kconfig
+++ b/drivers/scsi/Kconfig
@@ -973,6 +973,15 @@ config SCSI_LASI700
           many PA-RISC workstations & servers.  If you do not know whether you
           have a Lasi chip, it is safe to say "Y" here.
 
+config SCSI_SNI_53C710
+        tristate "SNI RM SCSI support for 53c710"
+        depends on SNI_RM && SCSI
+        select SCSI_SPI_ATTRS
+        select 53C700_LE_ON_BE
+        help
+          This is a driver for the onboard SCSI controller found in older
+          SNI RM workstations & servers.
+
 config 53C700_LE_ON_BE
         bool
         depends on SCSI_LASI700
diff --git a/drivers/scsi/Makefile b/drivers/scsi/Makefile
index bd7c9888f7f4..79ecf4ebe6eb 100644
--- a/drivers/scsi/Makefile
+++ b/drivers/scsi/Makefile
@@ -124,6 +124,7 @@ obj-$(CONFIG_JAZZ_ESP)		+= NCR53C9x.o	jazz_esp.o
 obj-$(CONFIG_SUN3X_ESP)         += NCR53C9x.o   sun3x_esp.o
 obj-$(CONFIG_SCSI_FCAL)         += fcal.o
 obj-$(CONFIG_SCSI_LASI700)      += 53c700.o lasi700.o
+obj-$(CONFIG_SCSI_SNI_53C710)   += 53c700.o sni_53c710.o
 obj-$(CONFIG_SCSI_NSP32)        += nsp32.o
 obj-$(CONFIG_SCSI_IPR)          += ipr.o
 obj-$(CONFIG_SCSI_SRP)          += libsrp.o
diff --git a/drivers/scsi/sni_53c710.c b/drivers/scsi/sni_53c710.c
new file mode 100644
index 000000000000..6bc505115841
--- /dev/null
+++ b/drivers/scsi/sni_53c710.c
@@ -0,0 +1,159 @@
+/* -*- mode: c; c-basic-offset: 8 -*- */
+
+/* SNI RM driver
+ *
+ * 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.
+**
+**-----------------------------------------------------------------------------
+ */
+
+/*
+ * Based on lasi700.c
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/stat.h>
+#include <linux/mm.h>
+#include <linux/blkdev.h>
+#include <linux/sched.h>
+#include <linux/ioport.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+#include <asm/delay.h>
+
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_transport.h>
+#include <scsi/scsi_transport_spi.h>
+
+#include "53c700.h"
+
+MODULE_AUTHOR("Thomas Bogendörfer");
+MODULE_DESCRIPTION("SNI RM 53c710 SCSI Driver");
+MODULE_LICENSE("GPL");
+
+#define SNIRM710_CLOCK  32
+
+static struct scsi_host_template snirm710_template = {
+        .name           = "SNI RM SCSI 53c710",
+        .proc_name      = "snirm_53c710",
+        .this_id        = 7,
+        .module         = THIS_MODULE,
+};
+
+static int __init snirm710_probe(struct platform_device *dev)
+{
+        unsigned long base;
+        struct NCR_700_Host_Parameters *hostdata;
+        struct Scsi_Host *host;
+        struct  resource *res;
+
+        res = platform_get_resource(dev, IORESOURCE_MEM, 0);
+        if (!res)
+                return -ENODEV;
+
+        base = res->start;
+        hostdata = kzalloc(sizeof(*hostdata), GFP_KERNEL);
+        if (!hostdata) {
+                printk(KERN_ERR "%s: Failed to allocate host data\n",
+                       dev->dev.bus_id);
+                return -ENOMEM;
+        }
+
+        hostdata->dev = &dev->dev;
+        dma_set_mask(&dev->dev, DMA_32BIT_MASK);
+        hostdata->base = ioremap_nocache(CPHYSADDR(base), 0x100);
+        hostdata->differential = 0;
+
+        hostdata->clock = SNIRM710_CLOCK;
+        hostdata->force_le_on_be = 1;
+        hostdata->chip710 = 1;
+        hostdata->burst_length = 4;
+
+        host = NCR_700_detect(&snirm710_template, hostdata, &dev->dev);
+        if (!host)
+                goto out_kfree;
+        host->this_id = 7;
+        host->base = base;
+        host->irq = platform_get_irq(dev, 0);
+        if(request_irq(host->irq, NCR_700_intr, SA_SHIRQ, "snirm710", host)) {
+                printk(KERN_ERR "snirm710: request_irq failed!\n");
+                goto out_put_host;
+        }
+
+        dev_set_drvdata(&dev->dev, host);
+        scsi_scan_host(host);
+
+        return 0;
+
+ out_put_host:
+        scsi_host_put(host);
+ out_kfree:
+        iounmap(hostdata->base);
+        kfree(hostdata);
+        return -ENODEV;
+}
+
+static int __exit snirm710_driver_remove(struct platform_device *dev)
+{
+        struct Scsi_Host *host = dev_get_drvdata(&dev->dev);
+        struct NCR_700_Host_Parameters *hostdata =
+                (struct NCR_700_Host_Parameters *)host->hostdata[0];
+
+        scsi_remove_host(host);
+        NCR_700_release(host);
+        free_irq(host->irq, host);
+        iounmap(hostdata->base);
+        kfree(hostdata);
+
+        return 0;
+}
+
+static struct platform_driver snirm710_driver = {
+        .probe  = snirm710_probe,
+        .remove = __devexit_p(snirm710_driver_remove),
+        .driver = {
+                .name   = "snirm_53c710",
+        },
+};
+
+static int __init snirm710_init(void)
+{
+        int err;
+
+        if ((err = platform_driver_register(&snirm710_driver))) {
+                printk(KERN_ERR "Driver registration failed\n");
+                return err;
+        }
+        return 0;
+}
+
+static void __exit snirm710_exit(void)
+{
+        platform_driver_unregister(&snirm710_driver);
+}
+
+module_init(snirm710_init);
+module_exit(snirm710_exit);