1 files changed, 122 insertions, 0 deletions
diff --git a/sys/arm/include/platformvar.h b/sys/arm/include/platformvar.h
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+/*-
+ * Copyright (c) 2005 Peter Grehan
+ * 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.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * 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.
+ */
+
+#ifndef _MACHINE_PLATFORMVAR_H_
+#define _MACHINE_PLATFORMVAR_H_
+
+/*
+ * An ARM platform implementation is declared with a kernel object and
+ * an associated method table, similar to a device driver.
+ *
+ * e.g.
+ *
+ * static platform_method_t bcm2835_methods[] = {
+ *	PLATFORMMETHOD(platform_probe,		bcm2835_probe),
+ *  ...
+ *	PLATFORMMETHOD_END
+ * };
+ *
+ * static platform_def_t bcm3835_platform = {
+ * 	"bcm2835",
+ *	bcm2835_methods,
+ *	sizeof(bcm2835_platform_softc),	// or 0 if no softc
+ * };
+ *
+ * PLATFORM_DEF(bcm2835_platform);
+ */
+
+#include <sys/kobj.h>
+#include <sys/linker_set.h>
+
+struct platform_class {
+	KOBJ_CLASS_FIELDS;
+
+	/* How many times to loop to delay approximately 1us */
+	int delay_count;
+};
+
+struct platform_kobj {
+	/*
+	 * A platform instance is a kernel object
+	 */
+	KOBJ_FIELDS;
+
+	/* Platform class, for access to class specific data */
+	struct platform_class *cls;
+};
+
+typedef struct platform_kobj	*platform_t;
+typedef struct platform_class	platform_def_t;
+#define platform_method_t	kobj_method_t
+
+#define PLATFORMMETHOD		KOBJMETHOD
+#define	PLATFORMMETHOD_END	KOBJMETHOD_END
+
+#define PLATFORM_DEF(name)	DATA_SET(platform_set, name)
+
+#ifdef FDT
+struct fdt_platform_class {
+	KOBJ_CLASS_FIELDS;
+
+	const char *fdt_compatible;
+};
+
+typedef struct fdt_platform_class fdt_platform_def_t;
+
+extern platform_method_t fdt_platform_methods[];
+
+#define FDT_PLATFORM_DEF2(NAME, VAR_NAME, NAME_STR, _size, _compatible,	\
+    _delay)								\
+CTASSERT(_delay > 0);							\
+static fdt_platform_def_t VAR_NAME ## _fdt_platform = {			\
+	.name = NAME_STR,						\
+	.methods = fdt_platform_methods,				\
+	.fdt_compatible = _compatible,					\
+};									\
+static kobj_class_t VAR_NAME ## _baseclasses[] =			\
+	{ (kobj_class_t)&VAR_NAME ## _fdt_platform, NULL };		\
+static platform_def_t VAR_NAME ## _platform = {				\
+	.name = NAME_STR,						\
+	.methods = NAME ## _methods,					\
+	.size = _size,							\
+	.baseclasses = VAR_NAME ## _baseclasses,			\
+	.delay_count = _delay,						\
+};									\
+DATA_SET(platform_set, VAR_NAME ## _platform)
+
+#define	FDT_PLATFORM_DEF(NAME, NAME_STR, size, compatible, delay)	\
+    FDT_PLATFORM_DEF2(NAME, NAME, NAME_STR, size, compatible, delay)
+
+#endif
+
+/*
+ * Helper to get the platform object
+ */
+platform_t platform_obj(void);
+
+bool arm_tmr_timed_wait(platform_t, int);
+
+#endif /* _MACHINE_PLATFORMVAR_H_ */