1 files changed, 71 insertions, 0 deletions
diff --git a/xen-2.4.16/drivers/scsi/scsi_module.c.inc b/xen-2.4.16/drivers/scsi/scsi_module.c.inc
new file mode 100644
index 0000000000..24099e0f56
--- /dev/null
+++ b/xen-2.4.16/drivers/scsi/scsi_module.c.inc
@@ -0,0 +1,71 @@
+/*
+ *  scsi_module.c Copyright (1994, 1995) Eric Youngdale.
+ *
+ * Support for loading low-level scsi drivers using the linux kernel loadable
+ * module interface.
+ *
+ * To use, the host adapter should first define and initialize the variable
+ * driver_template (datatype Scsi_Host_Template), and then include this file.
+ * This should also be wrapped in a #ifdef MODULE/#endif.
+ *
+ * The low -level driver must also define a release function which will
+ * free any irq assignments, release any dma channels, release any I/O
+ * address space that might be reserved, and otherwise clean up after itself.
+ * The idea is that the same driver should be able to be reloaded without
+ * any difficulty.  This makes debugging new drivers easier, as you should
+ * be able to load the driver, test it, unload, modify and reload.
+ *
+ * One *very* important caveat.  If the driver may need to do DMA on the
+ * ISA bus, you must have unchecked_isa_dma set in the device template,
+ * even if this might be changed during the detect routine.  This is
+ * because the shpnt structure will be allocated in a special way so that
+ * it will be below the appropriate DMA limit - thus if your driver uses
+ * the hostdata field of shpnt, and the board must be able to access this
+ * via DMA, the shpnt structure must be in a DMA accessible region of
+ * memory.  This comment would be relevant for something like the buslogic
+ * driver where there are many boards, only some of which do DMA onto the
+ * ISA bus.  There is no convenient way of specifying whether the host
+ * needs to be in a ISA DMA accessible region of memory when you call
+ * scsi_register.
+ */
+
+#include <xeno/module.h>
+#include <linux/init.h>
+
+static int __init init_this_scsi_driver(void)
+{
+	driver_template.module = THIS_MODULE;
+	scsi_register_module(MODULE_SCSI_HA, &driver_template);
+	if (driver_template.present)
+		return 0;
+
+	scsi_unregister_module(MODULE_SCSI_HA, &driver_template);
+	return -ENODEV;
+}
+
+static void __exit exit_this_scsi_driver(void)
+{
+	scsi_unregister_module(MODULE_SCSI_HA, &driver_template);
+}
+
+module_init(init_this_scsi_driver);
+module_exit(exit_this_scsi_driver);
+
+/*
+ * Overrides for Emacs so that we almost follow Linus's tabbing style.
+ * Emacs will notice this stuff at the end of the file and automatically
+ * adjust the settings for this buffer only.  This must remain at the end
+ * of the file.
+ * ---------------------------------------------------------------------------
+ * Local variables:
+ * c-indent-level: 4
+ * c-brace-imaginary-offset: 0
+ * c-brace-offset: -4
+ * c-argdecl-indent: 4
+ * c-label-offset: -4
+ * c-continued-statement-offset: 4
+ * c-continued-brace-offset: 0
+ * indent-tabs-mode: nil
+ * tab-width: 8
+ * End:
+ */