Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / scsi / mvme16x_scsi.c

diff --git a/kernel/drivers/scsi/mvme16x_scsi.c b/kernel/drivers/scsi/mvme16x_scsi.c
new file mode 100644 (file)
index 0000000..050c8c3
--- /dev/null
+++ b/kernel/drivers/scsi/mvme16x_scsi.c
@@ -0,0 +1,159 @@
+/*
+ * Detection routine for the NCR53c710 based MVME16x SCSI Controllers for Linux.
+ *
+ * Based on work by Alan Hourihane
+ *
+ * Rewritten to use 53c700.c by Kars de Jong <jongk@linux-m68k.org>
+ */
+
+#include <linux/module.h>
+#include <linux/blkdev.h>
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <asm/mvme16xhw.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("Kars de Jong <jongk@linux-m68k.org>");
+MODULE_DESCRIPTION("MVME16x NCR53C710 driver");
+MODULE_LICENSE("GPL");
+
+static struct scsi_host_template mvme16x_scsi_driver_template = {
+       .name                   = "MVME16x NCR53c710 SCSI",
+       .proc_name              = "MVME16x",
+       .this_id                = 7,
+       .module                 = THIS_MODULE,
+};
+
+static struct platform_device *mvme16x_scsi_device;
+
+static int mvme16x_probe(struct platform_device *dev)
+{
+       struct Scsi_Host * host = NULL;
+       struct NCR_700_Host_Parameters *hostdata;
+
+       if (!MACH_IS_MVME16x)
+               goto out;
+
+       if (mvme16x_config & MVME16x_CONFIG_NO_SCSICHIP) {
+               printk(KERN_INFO "mvme16x-scsi: detection disabled, "
+                                "SCSI chip not present\n");
+               goto out;
+       }
+
+       hostdata = kzalloc(sizeof(struct NCR_700_Host_Parameters), GFP_KERNEL);
+       if (hostdata == NULL) {
+               printk(KERN_ERR "mvme16x-scsi: "
+                               "Failed to allocate host data\n");
+               goto out;
+       }
+
+       /* Fill in the required pieces of hostdata */
+       hostdata->base = (void __iomem *)0xfff47000UL;
+       hostdata->clock = 50;   /* XXX - depends on the CPU clock! */
+       hostdata->chip710 = 1;
+       hostdata->dmode_extra = DMODE_FC2;
+       hostdata->dcntl_extra = EA_710;
+       hostdata->ctest7_extra = CTEST7_TT1;
+
+       /* and register the chip */
+       host = NCR_700_detect(&mvme16x_scsi_driver_template, hostdata,
+                             &dev->dev);
+       if (!host) {
+               printk(KERN_ERR "mvme16x-scsi: No host detected; "
+                               "board configuration problem?\n");
+               goto out_free;
+       }
+       host->this_id = 7;
+       host->base = 0xfff47000UL;
+       host->irq = MVME16x_IRQ_SCSI;
+       if (request_irq(host->irq, NCR_700_intr, 0, "mvme16x-scsi", host)) {
+               printk(KERN_ERR "mvme16x-scsi: request_irq failed\n");
+               goto out_put_host;
+       }
+
+       /* Enable scsi chip ints */
+       {
+               volatile unsigned long v;
+
+               /* Enable scsi interrupts at level 4 in PCCchip2 */
+               v = in_be32(0xfff4202c);
+               v = (v & ~0xff) | 0x10 | 4;
+               out_be32(0xfff4202c, v);
+       }
+
+       platform_set_drvdata(dev, host);
+       scsi_scan_host(host);
+
+       return 0;
+
+ out_put_host:
+       scsi_host_put(host);
+ out_free:
+       kfree(hostdata);
+ out:
+       return -ENODEV;
+}
+
+static int mvme16x_device_remove(struct platform_device *dev)
+{
+       struct Scsi_Host *host = platform_get_drvdata(dev);
+       struct NCR_700_Host_Parameters *hostdata = shost_priv(host);
+
+       /* Disable scsi chip ints */
+       {
+               volatile unsigned long v;
+
+               v = in_be32(0xfff4202c);
+               v &= ~0x10;
+               out_be32(0xfff4202c, v);
+       }
+       scsi_remove_host(host);
+       NCR_700_release(host);
+       kfree(hostdata);
+       free_irq(host->irq, host);
+
+       return 0;
+}
+
+static struct platform_driver mvme16x_scsi_driver = {
+       .driver = {
+               .name           = "mvme16x-scsi",
+       },
+       .probe          = mvme16x_probe,
+       .remove         = mvme16x_device_remove,
+};
+
+static int __init mvme16x_scsi_init(void)
+{
+       int err;
+
+       err = platform_driver_register(&mvme16x_scsi_driver);
+       if (err)
+               return err;
+
+       mvme16x_scsi_device = platform_device_register_simple("mvme16x-scsi",
+                                                             -1, NULL, 0);
+       if (IS_ERR(mvme16x_scsi_device)) {
+               platform_driver_unregister(&mvme16x_scsi_driver);
+               return PTR_ERR(mvme16x_scsi_device);
+       }
+
+       return 0;
+}
+
+static void __exit mvme16x_scsi_exit(void)
+{
+       platform_device_unregister(mvme16x_scsi_device);
+       platform_driver_unregister(&mvme16x_scsi_driver);
+}
+
+module_init(mvme16x_scsi_init);
+module_exit(mvme16x_scsi_exit);