Rename devices -> device

to match src/include/device

Change-Id: I5d0e5b4361c34881a3b81347aac48738cb5b9af0
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1960
Tested-by: build bot (Jenkins)
Reviewed-by: David Hendricks <dhendrix@chromium.org>

1 files changed, 166 insertions, 0 deletions

diff --git a/src/device/root_device.c b/src/device/root_device.c
new file mode 100644
index 0000000000..8ff2fdeb66
--- /dev/null
+++ b/src/device/root_device.c
@@ -0,0 +1,166 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2003-2004 Linux Networx
+ * (Written by Eric Biederman <ebiederman@lnxi.com> for Linux Networx)
+ * Copyright (C) 2003 Ronald G. Minnich <rminnich@gmail.com>
+ * Copyright (C) 2004-2005 Li-Ta Lo <ollie@lanl.gov>
+ * Copyright (C) 2005 Tyan
+ * (Written by Yinghai Lu <yhlu@tyan.com> for Tyan)
+ *
+ * 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/pci.h>
+#include <reset.h>
+
+const char mainboard_name[] = CONFIG_MAINBOARD_VENDOR " " CONFIG_MAINBOARD_PART_NUMBER;
+
+/**
+ * Read the resources for the root device, that encompass the resources for
+ * the entire system.
+ *
+ * @param root Pointer to the device structure for the system root device.
+ */
+static void root_dev_read_resources(device_t root)
+{
+	printk(BIOS_ERR, "%s should never be called.\n", __func__);
+}
+
+/**
+ * Write the resources for every device.
+ *
+ * Write the resources for the root device, and every device under it which
+ * are all of the devices.
+ *
+ * @param root Pointer to the device structure for the system root device.
+ */
+static void root_dev_set_resources(device_t root)
+{
+	printk(BIOS_ERR, "%s should never be called.\n", __func__);
+}
+
+/**
+ * Scan devices on static buses.
+ *
+ * The enumeration of certain buses is purely static. The existence of
+ * devices on those buses can be completely determined at compile time
+ * and is specified in the config file. Typical examples are the 'PNP'
+ * devices on a legacy ISA/LPC bus. There is no need of probing of any kind,
+ * the only thing we have to do is to walk through the bus and
+ * enable or disable devices as indicated in the config file.
+ *
+ * On the other hand, some devices are virtual and their existence is
+ * artificial. They can not be probed at run time. One example is the
+ * debug device. Those virtual devices have to be listed in the config
+ * file under some static bus in order to be enumerated at run time.
+ *
+ * This function is the default scan_bus() method for the root device and
+ * LPC bridges.
+ *
+ * @param bus Pointer to the device to which the static buses are attached to.
+ * @param max Maximum bus number currently used before scanning.
+ * @return The largest bus number used.
+ */
+static int smbus_max = 0;
+unsigned int scan_static_bus(device_t bus, unsigned int max)
+{
+	device_t child;
+	struct bus *link;
+
+	printk(BIOS_SPEW, "%s for %s\n", __func__, dev_path(bus));
+
+	for (link = bus->link_list; link; link = link->next) {
+		/* For SMBus bus enumerate. */
+		child = link->children;
+
+		if (child && child->path.type == DEVICE_PATH_I2C)
+			link->secondary = ++smbus_max;
+
+		for (child = link->children; child; child = child->sibling) {
+			if (child->chip_ops && child->chip_ops->enable_dev)
+				child->chip_ops->enable_dev(child);
+
+			if (child->ops && child->ops->enable)
+				child->ops->enable(child);
+
+			if (child->path.type == DEVICE_PATH_I2C) {
+				printk(BIOS_DEBUG, "smbus: %s[%d]->",
+				       dev_path(child->bus->dev),
+				       child->bus->link_num);
+			}
+			printk(BIOS_DEBUG, "%s %s\n", dev_path(child),
+			       child->enabled ? "enabled" : "disabled");
+		}
+	}
+
+	for (link = bus->link_list; link; link = link->next) {
+		for (child = link->children; child; child = child->sibling) {
+			if (!child->ops || !child->ops->scan_bus)
+				continue;
+			printk(BIOS_SPEW, "%s scanning...\n", dev_path(child));
+			max = scan_bus(child, max);
+		}
+	}
+
+	printk(BIOS_SPEW, "%s for %s done\n", __func__, dev_path(bus));
+
+	return max;
+}
+
+static void root_dev_enable_resources(device_t dev)
+{
+}
+
+/**
+ * Scan root bus for generic systems.
+ *
+ * This function is the default scan_bus() method of the root device.
+ *
+ * @param root The root device structure.
+ * @param max The current bus number scanned so far, usually 0x00.
+ * @return The largest bus number used.
+ */
+static unsigned int root_dev_scan_bus(device_t root, unsigned int max)
+{
+	return scan_static_bus(root, max);
+}
+
+static void root_dev_init(device_t root)
+{
+}
+
+static void root_dev_reset(struct bus *bus)
+{
+	printk(BIOS_INFO, "Resetting board...\n");
+	hard_reset();
+}
+
+/**
+ * Default device operation for root device.
+ *
+ * This is the default device operation for root devices. These operations
+ * should be fully usable as is. However the chip_operations::enable_dev()
+ * of a motherboard can override this if you want non-default behavior.
+ */
+struct device_operations default_dev_ops_root = {
+	.read_resources   = root_dev_read_resources,
+	.set_resources    = root_dev_set_resources,
+	.enable_resources = root_dev_enable_resources,
+	.init             = root_dev_init,
+	.scan_bus         = root_dev_scan_bus,
+	.reset_bus        = root_dev_reset,
+};