[PATCH] Add SuperHyway bus subsystem
ChangeSet 1.2027.3.1, 2005/03/09 12:14:18-08:00, [EMAIL PROTECTED]
[PATCH] Add SuperHyway bus subsystem
Signed-off-by: Paul Mundt <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
drivers/sh/Makefile |6
drivers/sh/superhyway/Makefile |7 +
drivers/sh/superhyway/superhyway-sysfs.c | 45 ++
drivers/sh/superhyway/superhyway.c | 201 +++
include/linux/superhyway.h | 79
5 files changed, 338 insertions(+)
diff -Nru a/drivers/sh/Makefile b/drivers/sh/Makefile
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/sh/Makefile 2005-03-09 16:36:31 -08:00
@@ -0,0 +1,6 @@
+#
+# Makefile for the SuperH specific drivers.
+#
+
+obj-$(CONFIG_SUPERHYWAY) += superhyway/
+
diff -Nru a/drivers/sh/superhyway/Makefile b/drivers/sh/superhyway/Makefile
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/sh/superhyway/Makefile2005-03-09 16:36:31 -08:00
@@ -0,0 +1,7 @@
+#
+# Makefile for the SuperHyway bus drivers.
+#
+
+obj-$(CONFIG_SUPERHYWAY) += superhyway.o
+obj-$(CONFIG_SYSFS)+= superhyway-sysfs.o
+
diff -Nru a/drivers/sh/superhyway/superhyway-sysfs.c
b/drivers/sh/superhyway/superhyway-sysfs.c
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/sh/superhyway/superhyway-sysfs.c 2005-03-09 16:36:31 -08:00
@@ -0,0 +1,45 @@
+/*
+ * drivers/sh/superhyway/superhyway-sysfs.c
+ *
+ * SuperHyway Bus sysfs interface
+ *
+ * Copyright (C) 2004, 2005 Paul Mundt <[EMAIL PROTECTED]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include
+#include
+#include
+#include
+
+#define superhyway_ro_attr(name, fmt, field) \
+static ssize_t name##_show(struct device *dev, char *buf) \
+{ \
+ struct superhyway_device *s = to_superhyway_device(dev);\
+ return sprintf(buf, fmt, s->field); \
+}
+
+/* VCR flags */
+superhyway_ro_attr(perr_flags, "0x%02x\n", vcr.perr_flags);
+superhyway_ro_attr(merr_flags, "0x%02x\n", vcr.merr_flags);
+superhyway_ro_attr(mod_vers, "0x%04x\n", vcr.mod_vers);
+superhyway_ro_attr(mod_id, "0x%04x\n", vcr.mod_id);
+superhyway_ro_attr(bot_mb, "0x%02x\n", vcr.bot_mb);
+superhyway_ro_attr(top_mb, "0x%02x\n", vcr.top_mb);
+
+/* Misc */
+superhyway_ro_attr(resource, "0x%08lx\n", resource.start);
+
+struct device_attribute superhyway_dev_attrs[] = {
+ __ATTR_RO(perr_flags),
+ __ATTR_RO(merr_flags),
+ __ATTR_RO(mod_vers),
+ __ATTR_RO(mod_id),
+ __ATTR_RO(bot_mb),
+ __ATTR_RO(top_mb),
+ __ATTR_RO(resource),
+ __ATTR_NULL,
+};
+
diff -Nru a/drivers/sh/superhyway/superhyway.c
b/drivers/sh/superhyway/superhyway.c
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/sh/superhyway/superhyway.c2005-03-09 16:36:31 -08:00
@@ -0,0 +1,201 @@
+/*
+ * drivers/sh/superhyway/superhyway.c
+ *
+ * SuperHyway Bus Driver
+ *
+ * Copyright (C) 2004, 2005 Paul Mundt <[EMAIL PROTECTED]>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+static int superhyway_devices;
+
+static struct device superhyway_bus_device = {
+ .bus_id = "superhyway",
+};
+
+static void superhyway_device_release(struct device *dev)
+{
+ kfree(to_superhyway_device(dev));
+}
+
+/**
+ * superhyway_add_device - Add a SuperHyway module
+ * @mod_id: Module ID (taken from MODULE.VCR.MOD_ID).
+ * @base: Physical address where module is mapped.
+ * @vcr: VCR value.
+ *
+ * This is responsible for adding a new SuperHyway module. This sets up a new
+ * struct superhyway_device for the module being added. Each one of @mod_id,
+ * @base, and @vcr are registered with the new device for further use
+ * elsewhere.
+ *
+ * Devices are initially added in the order that they are scanned (from the
+ * top-down of the memory map), and are assigned an ID based on the order that
+ * they are added. Any manual addition of a module will thus get the ID after
+ * the devices already discovered regardless of where it resides in memory.
+ *
+ * Further work can and should be done in superhyway_scan_bus(), to be sure
+ * that any new modules are properly discovered and subsequently registered.
+ */
+int superhyway_add_device(unsigned int mod_id, unsigned long base,
+ unsigned long long vcr)
+{
+ struct superhyway_device *dev;
+
+ dev = kmalloc(sizeof(struct superhyway_device), GFP_KERNE
[PATCH] Add SuperHyway bus subsystem
ChangeSet 1.2027.3.1, 2005/03/09 12:14:18-08:00, [EMAIL PROTECTED]
[PATCH] Add SuperHyway bus subsystem
Signed-off-by: Paul Mundt [EMAIL PROTECTED]
Signed-off-by: Greg Kroah-Hartman [EMAIL PROTECTED]
drivers/sh/Makefile |6
drivers/sh/superhyway/Makefile |7 +
drivers/sh/superhyway/superhyway-sysfs.c | 45 ++
drivers/sh/superhyway/superhyway.c | 201 +++
include/linux/superhyway.h | 79
5 files changed, 338 insertions(+)
diff -Nru a/drivers/sh/Makefile b/drivers/sh/Makefile
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/sh/Makefile 2005-03-09 16:36:31 -08:00
@@ -0,0 +1,6 @@
+#
+# Makefile for the SuperH specific drivers.
+#
+
+obj-$(CONFIG_SUPERHYWAY) += superhyway/
+
diff -Nru a/drivers/sh/superhyway/Makefile b/drivers/sh/superhyway/Makefile
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/sh/superhyway/Makefile2005-03-09 16:36:31 -08:00
@@ -0,0 +1,7 @@
+#
+# Makefile for the SuperHyway bus drivers.
+#
+
+obj-$(CONFIG_SUPERHYWAY) += superhyway.o
+obj-$(CONFIG_SYSFS)+= superhyway-sysfs.o
+
diff -Nru a/drivers/sh/superhyway/superhyway-sysfs.c
b/drivers/sh/superhyway/superhyway-sysfs.c
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/sh/superhyway/superhyway-sysfs.c 2005-03-09 16:36:31 -08:00
@@ -0,0 +1,45 @@
+/*
+ * drivers/sh/superhyway/superhyway-sysfs.c
+ *
+ * SuperHyway Bus sysfs interface
+ *
+ * Copyright (C) 2004, 2005 Paul Mundt [EMAIL PROTECTED]
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+#include linux/kernel.h
+#include linux/device.h
+#include linux/types.h
+#include linux/superhyway.h
+
+#define superhyway_ro_attr(name, fmt, field) \
+static ssize_t name##_show(struct device *dev, char *buf) \
+{ \
+ struct superhyway_device *s = to_superhyway_device(dev);\
+ return sprintf(buf, fmt, s-field); \
+}
+
+/* VCR flags */
+superhyway_ro_attr(perr_flags, 0x%02x\n, vcr.perr_flags);
+superhyway_ro_attr(merr_flags, 0x%02x\n, vcr.merr_flags);
+superhyway_ro_attr(mod_vers, 0x%04x\n, vcr.mod_vers);
+superhyway_ro_attr(mod_id, 0x%04x\n, vcr.mod_id);
+superhyway_ro_attr(bot_mb, 0x%02x\n, vcr.bot_mb);
+superhyway_ro_attr(top_mb, 0x%02x\n, vcr.top_mb);
+
+/* Misc */
+superhyway_ro_attr(resource, 0x%08lx\n, resource.start);
+
+struct device_attribute superhyway_dev_attrs[] = {
+ __ATTR_RO(perr_flags),
+ __ATTR_RO(merr_flags),
+ __ATTR_RO(mod_vers),
+ __ATTR_RO(mod_id),
+ __ATTR_RO(bot_mb),
+ __ATTR_RO(top_mb),
+ __ATTR_RO(resource),
+ __ATTR_NULL,
+};
+
diff -Nru a/drivers/sh/superhyway/superhyway.c
b/drivers/sh/superhyway/superhyway.c
--- /dev/null Wed Dec 31 16:00:00 196900
+++ b/drivers/sh/superhyway/superhyway.c2005-03-09 16:36:31 -08:00
@@ -0,0 +1,201 @@
+/*
+ * drivers/sh/superhyway/superhyway.c
+ *
+ * SuperHyway Bus Driver
+ *
+ * Copyright (C) 2004, 2005 Paul Mundt [EMAIL PROTECTED]
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+#include linux/kernel.h
+#include linux/device.h
+#include linux/init.h
+#include linux/module.h
+#include linux/types.h
+#include linux/list.h
+#include linux/superhyway.h
+
+static int superhyway_devices;
+
+static struct device superhyway_bus_device = {
+ .bus_id = superhyway,
+};
+
+static void superhyway_device_release(struct device *dev)
+{
+ kfree(to_superhyway_device(dev));
+}
+
+/**
+ * superhyway_add_device - Add a SuperHyway module
+ * @mod_id: Module ID (taken from MODULE.VCR.MOD_ID).
+ * @base: Physical address where module is mapped.
+ * @vcr: VCR value.
+ *
+ * This is responsible for adding a new SuperHyway module. This sets up a new
+ * struct superhyway_device for the module being added. Each one of @mod_id,
+ * @base, and @vcr are registered with the new device for further use
+ * elsewhere.
+ *
+ * Devices are initially added in the order that they are scanned (from the
+ * top-down of the memory map), and are assigned an ID based on the order that
+ * they are added. Any manual addition of a module will thus get the ID after
+ * the devices already discovered regardless of where it resides in memory.
+ *
+ * Further work can and should be done in superhyway_scan_bus(), to be sure
+ * that any new modules are properly discovered and subsequently registered.
+ */
+int superhyway_add_device(unsigned int mod_id, unsigned long base,
+ unsigned long long vcr)
+{
+ struct superhyway_device *dev;
+
+ dev = kmalloc(sizeof(struct superhyway_device), GFP_KERNEL
