mirror of https://gitee.com/openkylin/linux.git
drivers: Introduce MEN Chameleon Bus
The MCB (MEN Chameleon Bus) is a Bus specific to MEN Mikroelektronik FPGA based devices. It is used to identify MCB based IP-Cores within an FPGA and provide the necessary framework for instantiating drivers for these devices. Signed-off-by: Johannes Thumshirn <johannes.thumshirn@men.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johannes Thumshirn
Greg Kroah-Hartman
parent
e5bb7425e5
commit
3764e82e51
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@ -5667,6 +5667,12 @@ L: linux-watchdog@vger.kernel.org
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S: Supported
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F: drivers/watchdog/mena21_wdt.c
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MEN CHAMELEON BUS (mcb)
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M: Johannes Thumshirn <johannes.thumshirn@men.de>
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S: Supported
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F: drivers/mcb/
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F: include/linux/mcb.h
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METAG ARCHITECTURE
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M: James Hogan <james.hogan@imgtec.com>
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L: linux-metag@vger.kernel.org
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@ -172,4 +172,6 @@ source "drivers/phy/Kconfig"
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source "drivers/powercap/Kconfig"
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source "drivers/mcb/Kconfig"
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endmenu
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@ -156,3 +156,4 @@ obj-$(CONFIG_IPACK_BUS) += ipack/
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obj-$(CONFIG_NTB) += ntb/
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obj-$(CONFIG_FMC) += fmc/
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obj-$(CONFIG_POWERCAP) += powercap/
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obj-$(CONFIG_MCB) += mcb/
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@ -0,0 +1,15 @@
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#
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# MEN Chameleon Bus (MCB) support
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#
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menuconfig MCB
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tristate "MCB support"
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default m
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help
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The MCB (MEN Chameleon Bus) is a Bus specific to MEN Mikroelektronik
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FPGA based devices. It is used to identify MCB based IP-Cores within
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an FPGA and provide the necessary framework for instantiating drivers
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for these devices.
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If build as a module, the module is called mcb.ko
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@ -0,0 +1,5 @@
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obj-$(CONFIG_MCB) += mcb.o
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mcb-y += mcb-core.o
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mcb-y += mcb-parse.o
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@ -0,0 +1,414 @@
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/*
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* MEN Chameleon Bus.
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*
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* Copyright (C) 2013 MEN Mikroelektronik GmbH (www.men.de)
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* Author: Johannes Thumshirn <johannes.thumshirn@men.de>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; version 2 of the License.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/idr.h>
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#include <linux/mcb.h>
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static DEFINE_IDA(mcb_ida);
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static const struct mcb_device_id *mcb_match_id(const struct mcb_device_id *ids,
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struct mcb_device *dev)
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{
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if (ids) {
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while (ids->device) {
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if (ids->device == dev->id)
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return ids;
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ids++;
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}
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}
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return NULL;
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}
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static int mcb_match(struct device *dev, struct device_driver *drv)
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{
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struct mcb_driver *mdrv = to_mcb_driver(drv);
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struct mcb_device *mdev = to_mcb_device(dev);
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const struct mcb_device_id *found_id;
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found_id = mcb_match_id(mdrv->id_table, mdev);
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if (found_id)
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return 1;
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return 0;
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}
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static int mcb_uevent(struct device *dev, struct kobj_uevent_env *env)
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{
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struct mcb_device *mdev = to_mcb_device(dev);
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int ret;
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ret = add_uevent_var(env, "MODALIAS=mcb:16z%03d", mdev->id);
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if (ret)
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return -ENOMEM;
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return 0;
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}
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static int mcb_probe(struct device *dev)
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{
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struct mcb_driver *mdrv = to_mcb_driver(dev->driver);
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struct mcb_device *mdev = to_mcb_device(dev);
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const struct mcb_device_id *found_id;
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found_id = mcb_match_id(mdrv->id_table, mdev);
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if (!found_id)
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return -ENODEV;
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return mdrv->probe(mdev, found_id);
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}
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static int mcb_remove(struct device *dev)
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{
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struct mcb_driver *mdrv = to_mcb_driver(dev->driver);
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struct mcb_device *mdev = to_mcb_device(dev);
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mdrv->remove(mdev);
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put_device(&mdev->dev);
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return 0;
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}
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static void mcb_shutdown(struct device *dev)
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{
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struct mcb_device *mdev = to_mcb_device(dev);
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struct mcb_driver *mdrv = mdev->driver;
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if (mdrv && mdrv->shutdown)
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mdrv->shutdown(mdev);
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}
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static struct bus_type mcb_bus_type = {
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.name = "mcb",
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.match = mcb_match,
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.uevent = mcb_uevent,
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.probe = mcb_probe,
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.remove = mcb_remove,
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.shutdown = mcb_shutdown,
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};
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/**
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* __mcb_register_driver() - Register a @mcb_driver at the system
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* @drv: The @mcb_driver
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* @owner: The @mcb_driver's module
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* @mod_name: The name of the @mcb_driver's module
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*
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* Register a @mcb_driver at the system. Perform some sanity checks, if
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* the .probe and .remove methods are provided by the driver.
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*/
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int __mcb_register_driver(struct mcb_driver *drv, struct module *owner,
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const char *mod_name)
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{
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if (!drv->probe || !drv->remove)
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return -EINVAL;
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drv->driver.owner = owner;
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drv->driver.bus = &mcb_bus_type;
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drv->driver.mod_name = mod_name;
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return driver_register(&drv->driver);
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}
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EXPORT_SYMBOL_GPL(__mcb_register_driver);
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/**
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* mcb_unregister_driver() - Unregister a @mcb_driver from the system
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* @drv: The @mcb_driver
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*
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* Unregister a @mcb_driver from the system.
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*/
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void mcb_unregister_driver(struct mcb_driver *drv)
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{
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driver_unregister(&drv->driver);
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}
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EXPORT_SYMBOL_GPL(mcb_unregister_driver);
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static void mcb_release_dev(struct device *dev)
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{
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struct mcb_device *mdev = to_mcb_device(dev);
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mcb_bus_put(mdev->bus);
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kfree(mdev);
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}
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/**
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* mcb_device_register() - Register a mcb_device
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* @bus: The @mcb_bus of the device
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* @dev: The @mcb_device
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*
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* Register a specific @mcb_device at a @mcb_bus and the system itself.
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*/
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int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev)
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{
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int ret;
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int device_id;
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device_initialize(&dev->dev);
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dev->dev.bus = &mcb_bus_type;
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dev->dev.parent = bus->dev.parent;
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dev->dev.release = mcb_release_dev;
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device_id = dev->id;
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dev_set_name(&dev->dev, "mcb%d-16z%03d-%d:%d:%d",
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bus->bus_nr, device_id, dev->inst, dev->group, dev->var);
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ret = device_add(&dev->dev);
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if (ret < 0) {
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pr_err("Failed registering device 16z%03d on bus mcb%d (%d)\n",
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device_id, bus->bus_nr, ret);
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goto out;
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}
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return 0;
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out:
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return ret;
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}
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EXPORT_SYMBOL_GPL(mcb_device_register);
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/**
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* mcb_alloc_bus() - Allocate a new @mcb_bus
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*
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* Allocate a new @mcb_bus.
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*/
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struct mcb_bus *mcb_alloc_bus(void)
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{
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struct mcb_bus *bus;
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int bus_nr;
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bus = kzalloc(sizeof(struct mcb_bus), GFP_KERNEL);
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if (!bus)
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return NULL;
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bus_nr = ida_simple_get(&mcb_ida, 0, 0, GFP_KERNEL);
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if (bus_nr < 0) {
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kfree(bus);
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return ERR_PTR(bus_nr);
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}
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INIT_LIST_HEAD(&bus->children);
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bus->bus_nr = bus_nr;
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return bus;
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}
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EXPORT_SYMBOL_GPL(mcb_alloc_bus);
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static int __mcb_devices_unregister(struct device *dev, void *data)
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{
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device_unregister(dev);
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return 0;
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}
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static void mcb_devices_unregister(struct mcb_bus *bus)
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{
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bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_devices_unregister);
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}
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/**
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* mcb_release_bus() - Free a @mcb_bus
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* @bus: The @mcb_bus to release
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*
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* Release an allocated @mcb_bus from the system.
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*/
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void mcb_release_bus(struct mcb_bus *bus)
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{
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mcb_devices_unregister(bus);
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ida_simple_remove(&mcb_ida, bus->bus_nr);
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kfree(bus);
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}
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EXPORT_SYMBOL_GPL(mcb_release_bus);
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/**
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* mcb_bus_put() - Increment refcnt
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* @bus: The @mcb_bus
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*
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* Get a @mcb_bus' ref
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*/
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struct mcb_bus *mcb_bus_get(struct mcb_bus *bus)
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{
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if (bus)
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get_device(&bus->dev);
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return bus;
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}
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EXPORT_SYMBOL_GPL(mcb_bus_get);
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/**
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* mcb_bus_put() - Decrement refcnt
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* @bus: The @mcb_bus
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*
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* Release a @mcb_bus' ref
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*/
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void mcb_bus_put(struct mcb_bus *bus)
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{
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if (bus)
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put_device(&bus->dev);
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}
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EXPORT_SYMBOL_GPL(mcb_bus_put);
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/**
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* mcb_alloc_dev() - Allocate a device
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* @bus: The @mcb_bus the device is part of
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*
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* Allocate a @mcb_device and add bus.
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*/
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struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus)
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{
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struct mcb_device *dev;
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dev = kzalloc(sizeof(struct mcb_device), GFP_KERNEL);
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if (!dev)
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return NULL;
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INIT_LIST_HEAD(&dev->bus_list);
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dev->bus = bus;
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return dev;
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}
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EXPORT_SYMBOL_GPL(mcb_alloc_dev);
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/**
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* mcb_free_dev() - Free @mcb_device
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* @dev: The device to free
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*
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* Free a @mcb_device
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*/
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void mcb_free_dev(struct mcb_device *dev)
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{
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kfree(dev);
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}
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EXPORT_SYMBOL_GPL(mcb_free_dev);
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static int __mcb_bus_add_devices(struct device *dev, void *data)
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{
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struct mcb_device *mdev = to_mcb_device(dev);
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int retval;
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if (mdev->is_added)
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return 0;
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retval = device_attach(dev);
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if (retval < 0)
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dev_err(dev, "Error adding device (%d)\n", retval);
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mdev->is_added = true;
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return 0;
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}
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static int __mcb_bus_add_child(struct device *dev, void *data)
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{
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struct mcb_device *mdev = to_mcb_device(dev);
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struct mcb_bus *child;
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BUG_ON(!mdev->is_added);
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child = mdev->subordinate;
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if (child)
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mcb_bus_add_devices(child);
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return 0;
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}
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/**
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* mcb_bus_add_devices() - Add devices in the bus' internal device list
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* @bus: The @mcb_bus we add the devices
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*
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* Add devices in the bus' internal device list to the system.
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*/
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void mcb_bus_add_devices(const struct mcb_bus *bus)
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{
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bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_bus_add_devices);
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bus_for_each_dev(&mcb_bus_type, NULL, NULL, __mcb_bus_add_child);
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}
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EXPORT_SYMBOL_GPL(mcb_bus_add_devices);
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/**
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* mcb_request_mem() - Request memory
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* @dev: The @mcb_device the memory is for
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* @name: The name for the memory reference.
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*
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* Request memory for a @mcb_device. If @name is NULL the driver name will
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* be used.
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*/
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struct resource *mcb_request_mem(struct mcb_device *dev, const char *name)
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{
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struct resource *mem;
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u32 size;
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if (!name)
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name = dev->dev.driver->name;
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size = resource_size(&dev->mem);
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mem = request_mem_region(dev->mem.start, size, name);
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if (!mem)
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return ERR_PTR(-EBUSY);
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return mem;
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}
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EXPORT_SYMBOL_GPL(mcb_request_mem);
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/**
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* mcb_release_mem() - Release memory requested by device
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* @dev: The @mcb_device that requested the memory
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*
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* Release memory that was prior requested via @mcb_request_mem().
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*/
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void mcb_release_mem(struct resource *mem)
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{
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u32 size;
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size = resource_size(mem);
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release_mem_region(mem->start, size);
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}
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EXPORT_SYMBOL_GPL(mcb_release_mem);
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/**
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* mcb_get_irq() - Get device's IRQ number
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* @dev: The @mcb_device the IRQ is for
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*
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* Get the IRQ number of a given @mcb_device.
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*/
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int mcb_get_irq(struct mcb_device *dev)
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{
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struct resource *irq = &dev->irq;
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return irq->start;
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}
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EXPORT_SYMBOL_GPL(mcb_get_irq);
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static int mcb_init(void)
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{
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return bus_register(&mcb_bus_type);
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}
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static void mcb_exit(void)
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{
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bus_unregister(&mcb_bus_type);
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}
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/* mcb must be initialized after PCI but before the chameleon drivers.
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* That means we must use some initcall between subsys_initcall and
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* device_initcall.
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*/
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fs_initcall(mcb_init);
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module_exit(mcb_exit);
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MODULE_DESCRIPTION("MEN Chameleon Bus Driver");
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MODULE_AUTHOR("Johannes Thumshirn <johannes.thumshirn@men.de>");
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MODULE_LICENSE("GPL v2");
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@ -0,0 +1,116 @@
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#ifndef __MCB_INTERNAL
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#define __MCB_INTERNAL
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#include <linux/types.h>
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#define CHAMELEON_FILENAME_LEN 12
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#define CHAMELEONV2_MAGIC 0xabce
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enum chameleon_descriptor_type {
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CHAMELEON_DTYPE_GENERAL = 0x0,
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CHAMELEON_DTYPE_BRIDGE = 0x1,
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CHAMELEON_DTYPE_CPU = 0x2,
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CHAMELEON_DTYPE_BAR = 0x3,
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CHAMELEON_DTYPE_END = 0xf,
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};
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enum chameleon_bus_type {
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CHAMELEON_BUS_WISHBONE,
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CHAMELEON_BUS_AVALON,
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CHAMELEON_BUS_LPC,
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CHAMELEON_BUS_ISA,
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};
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/**
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* struct chameleon_fpga_header
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*
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* @revision: Revison of Chameleon table in FPGA
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* @model: Chameleon table model ASCII char
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* @minor: Revision minor
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* @bus_type: Bus type (usually %CHAMELEON_BUS_WISHBONE)
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||||
* @magic: Chameleon header magic number (0xabce for version 2)
|
||||
* @reserved: Reserved
|
||||
* @filename: Filename of FPGA bitstream
|
||||
*/
|
||||
struct chameleon_fpga_header {
|
||||
u8 revision;
|
||||
char model;
|
||||
u8 minor;
|
||||
u8 bus_type;
|
||||
u16 magic;
|
||||
u16 reserved;
|
||||
/* This one has no '\0' at the end!!! */
|
||||
char filename[CHAMELEON_FILENAME_LEN];
|
||||
} __packed;
|
||||
#define HEADER_MAGIC_OFFSET 0x4
|
||||
|
||||
/**
|
||||
* struct chameleon_gdd - Chameleon General Device Descriptor
|
||||
*
|
||||
* @irq: the position in the FPGA's IRQ controller vector
|
||||
* @rev: the revision of the variant's implementation
|
||||
* @var: the variant of the IP core
|
||||
* @dev: the device the IP core is
|
||||
* @dtype: device descriptor type
|
||||
* @bar: BAR offset that must be added to module offset
|
||||
* @inst: the instance number of the device, 0 is first instance
|
||||
* @group: the group the device belongs to (0 = no group)
|
||||
* @reserved: reserved
|
||||
* @offset: beginning of the address window of desired module
|
||||
* @size: size of the module's address window
|
||||
*/
|
||||
struct chameleon_gdd {
|
||||
__le32 reg1;
|
||||
__le32 reg2;
|
||||
__le32 offset;
|
||||
__le32 size;
|
||||
|
||||
} __packed;
|
||||
|
||||
/* GDD Register 1 fields */
|
||||
#define GDD_IRQ(x) ((x) & 0x1f)
|
||||
#define GDD_REV(x) (((x) >> 5) & 0x3f)
|
||||
#define GDD_VAR(x) (((x) >> 11) & 0x3f)
|
||||
#define GDD_DEV(x) (((x) >> 18) & 0x3ff)
|
||||
#define GDD_DTY(x) (((x) >> 28) & 0xf)
|
||||
|
||||
/* GDD Register 2 fields */
|
||||
#define GDD_BAR(x) ((x) & 0x7)
|
||||
#define GDD_INS(x) (((x) >> 3) & 0x3f)
|
||||
#define GDD_GRP(x) (((x) >> 9) & 0x3f)
|
||||
|
||||
/**
|
||||
* struct chameleon_bdd - Chameleon Bridge Device Descriptor
|
||||
*
|
||||
* @irq: the position in the FPGA's IRQ controller vector
|
||||
* @rev: the revision of the variant's implementation
|
||||
* @var: the variant of the IP core
|
||||
* @dev: the device the IP core is
|
||||
* @dtype: device descriptor type
|
||||
* @bar: BAR offset that must be added to module offset
|
||||
* @inst: the instance number of the device, 0 is first instance
|
||||
* @dbar: destination bar from the bus _behind_ the bridge
|
||||
* @chamoff: offset within the BAR of the source bus
|
||||
* @offset:
|
||||
* @size:
|
||||
*/
|
||||
struct chameleon_bdd {
|
||||
unsigned int irq:6;
|
||||
unsigned int rev:6;
|
||||
unsigned int var:6;
|
||||
unsigned int dev:10;
|
||||
unsigned int dtype:4;
|
||||
unsigned int bar:3;
|
||||
unsigned int inst:6;
|
||||
unsigned int dbar:3;
|
||||
unsigned int group:6;
|
||||
unsigned int reserved:14;
|
||||
u32 chamoff;
|
||||
u32 offset;
|
||||
u32 size;
|
||||
} __packed;
|
||||
|
||||
int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
|
||||
void __iomem *base);
|
||||
|
||||
#endif
|
||||
|
|
@ -0,0 +1,159 @@
|
|||
#include <linux/types.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/export.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/mcb.h>
|
||||
|
||||
#include "mcb-internal.h"
|
||||
|
||||
struct mcb_parse_priv {
|
||||
phys_addr_t mapbase;
|
||||
void __iomem *base;
|
||||
};
|
||||
|
||||
#define for_each_chameleon_cell(dtype, p) \
|
||||
for ((dtype) = get_next_dtype((p)); \
|
||||
(dtype) != CHAMELEON_DTYPE_END; \
|
||||
(dtype) = get_next_dtype((p)))
|
||||
|
||||
static inline uint32_t get_next_dtype(void __iomem *p)
|
||||
{
|
||||
uint32_t dtype;
|
||||
|
||||
dtype = readl(p);
|
||||
return dtype >> 28;
|
||||
}
|
||||
|
||||
static int chameleon_parse_bdd(struct mcb_bus *bus,
|
||||
phys_addr_t mapbase,
|
||||
void __iomem *base)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int chameleon_parse_gdd(struct mcb_bus *bus,
|
||||
phys_addr_t mapbase,
|
||||
void __iomem *base)
|
||||
{
|
||||
struct chameleon_gdd __iomem *gdd =
|
||||
(struct chameleon_gdd __iomem *) base;
|
||||
struct mcb_device *mdev;
|
||||
u32 offset;
|
||||
u32 size;
|
||||
int ret;
|
||||
__le32 reg1;
|
||||
__le32 reg2;
|
||||
|
||||
mdev = mcb_alloc_dev(bus);
|
||||
if (!mdev)
|
||||
return -ENOMEM;
|
||||
|
||||
reg1 = readl(&gdd->reg1);
|
||||
reg2 = readl(&gdd->reg2);
|
||||
offset = readl(&gdd->offset);
|
||||
size = readl(&gdd->size);
|
||||
|
||||
mdev->id = GDD_DEV(reg1);
|
||||
mdev->rev = GDD_REV(reg1);
|
||||
mdev->var = GDD_VAR(reg1);
|
||||
mdev->bar = GDD_BAR(reg1);
|
||||
mdev->group = GDD_GRP(reg2);
|
||||
mdev->inst = GDD_INS(reg2);
|
||||
|
||||
pr_debug("Found a 16z%03d\n", mdev->id);
|
||||
|
||||
mdev->irq.start = GDD_IRQ(reg1);
|
||||
mdev->irq.end = GDD_IRQ(reg1);
|
||||
mdev->irq.flags = IORESOURCE_IRQ;
|
||||
|
||||
mdev->mem.start = mapbase + offset;
|
||||
mdev->mem.end = mdev->mem.start + size - 1;
|
||||
mdev->mem.flags = IORESOURCE_MEM;
|
||||
|
||||
mdev->is_added = false;
|
||||
|
||||
ret = mcb_device_register(bus, mdev);
|
||||
if (ret < 0)
|
||||
goto err;
|
||||
|
||||
return 0;
|
||||
|
||||
err:
|
||||
mcb_free_dev(mdev);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int chameleon_parse_cells(struct mcb_bus *bus, phys_addr_t mapbase,
|
||||
void __iomem *base)
|
||||
{
|
||||
char __iomem *p = base;
|
||||
struct chameleon_fpga_header *header;
|
||||
uint32_t dtype;
|
||||
int num_cells = 0;
|
||||
int ret = 0;
|
||||
u32 hsize;
|
||||
|
||||
hsize = sizeof(struct chameleon_fpga_header);
|
||||
|
||||
header = kzalloc(hsize, GFP_KERNEL);
|
||||
if (!header)
|
||||
return -ENOMEM;
|
||||
|
||||
/* Extract header information */
|
||||
memcpy_fromio(header, p, hsize);
|
||||
/* We only support chameleon v2 at the moment */
|
||||
header->magic = le16_to_cpu(header->magic);
|
||||
if (header->magic != CHAMELEONV2_MAGIC) {
|
||||
pr_err("Unsupported chameleon version 0x%x\n",
|
||||
header->magic);
|
||||
kfree(header);
|
||||
return -ENODEV;
|
||||
}
|
||||
p += hsize;
|
||||
|
||||
pr_debug("header->revision = %d\n", header->revision);
|
||||
pr_debug("header->model = 0x%x ('%c')\n", header->model,
|
||||
header->model);
|
||||
pr_debug("header->minor = %d\n", header->minor);
|
||||
pr_debug("header->bus_type = 0x%x\n", header->bus_type);
|
||||
|
||||
|
||||
pr_debug("header->magic = 0x%x\n", header->magic);
|
||||
pr_debug("header->filename = \"%.*s\"\n", CHAMELEON_FILENAME_LEN,
|
||||
header->filename);
|
||||
|
||||
for_each_chameleon_cell(dtype, p) {
|
||||
switch (dtype) {
|
||||
case CHAMELEON_DTYPE_GENERAL:
|
||||
ret = chameleon_parse_gdd(bus, mapbase, p);
|
||||
if (ret < 0)
|
||||
goto out;
|
||||
p += sizeof(struct chameleon_gdd);
|
||||
break;
|
||||
case CHAMELEON_DTYPE_BRIDGE:
|
||||
chameleon_parse_bdd(bus, mapbase, p);
|
||||
p += sizeof(struct chameleon_bdd);
|
||||
break;
|
||||
case CHAMELEON_DTYPE_END:
|
||||
break;
|
||||
default:
|
||||
pr_err("Invalid chameleon descriptor type 0x%x\n",
|
||||
dtype);
|
||||
return -EINVAL;
|
||||
}
|
||||
num_cells++;
|
||||
}
|
||||
|
||||
if (num_cells == 0)
|
||||
num_cells = -EINVAL;
|
||||
|
||||
kfree(header);
|
||||
return num_cells;
|
||||
|
||||
out:
|
||||
kfree(header);
|
||||
return ret;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(chameleon_parse_cells);
|
||||
|
|
@ -0,0 +1,119 @@
|
|||
/*
|
||||
* MEN Chameleon Bus.
|
||||
*
|
||||
* Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
|
||||
* Author: Johannes Thumshirn <johannes.thumshirn@men.de>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#ifndef _LINUX_MCB_H
|
||||
#define _LINUX_MCB_H
|
||||
|
||||
#include <linux/mod_devicetable.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/irqreturn.h>
|
||||
|
||||
struct mcb_driver;
|
||||
|
||||
/**
|
||||
* struct mcb_bus - MEN Chameleon Bus
|
||||
*
|
||||
* @dev: pointer to carrier device
|
||||
* @children: the child busses
|
||||
* @bus_nr: mcb bus number
|
||||
*/
|
||||
struct mcb_bus {
|
||||
struct list_head children;
|
||||
struct device dev;
|
||||
int bus_nr;
|
||||
};
|
||||
#define to_mcb_bus(b) container_of((b), struct mcb_bus, dev)
|
||||
|
||||
/**
|
||||
* struct mcb_device - MEN Chameleon Bus device
|
||||
*
|
||||
* @bus_list: internal list handling for bus code
|
||||
* @dev: device in kernel representation
|
||||
* @bus: mcb bus the device is plugged to
|
||||
* @subordinate: subordinate MCBus in case of bridge
|
||||
* @is_added: flag to check if device is added to bus
|
||||
* @driver: associated mcb_driver
|
||||
* @id: mcb device id
|
||||
* @inst: instance in Chameleon table
|
||||
* @group: group in Chameleon table
|
||||
* @var: variant in Chameleon table
|
||||
* @bar: BAR in Chameleon table
|
||||
* @rev: revision in Chameleon table
|
||||
* @irq: IRQ resource
|
||||
* @memory: memory resource
|
||||
*/
|
||||
struct mcb_device {
|
||||
struct list_head bus_list;
|
||||
struct device dev;
|
||||
struct mcb_bus *bus;
|
||||
struct mcb_bus *subordinate;
|
||||
bool is_added;
|
||||
struct mcb_driver *driver;
|
||||
u16 id;
|
||||
int inst;
|
||||
int group;
|
||||
int var;
|
||||
int bar;
|
||||
int rev;
|
||||
struct resource irq;
|
||||
struct resource mem;
|
||||
};
|
||||
#define to_mcb_device(x) container_of((x), struct mcb_device, dev)
|
||||
|
||||
/**
|
||||
* struct mcb_driver - MEN Chameleon Bus device driver
|
||||
*
|
||||
* @driver: device_driver
|
||||
* @id_table: mcb id table
|
||||
* @probe: probe callback
|
||||
* @remove: remove callback
|
||||
* @shutdown: shutdown callback
|
||||
*/
|
||||
struct mcb_driver {
|
||||
struct device_driver driver;
|
||||
const struct mcb_device_id *id_table;
|
||||
int (*probe)(struct mcb_device *mdev, const struct mcb_device_id *id);
|
||||
void (*remove)(struct mcb_device *mdev);
|
||||
void (*shutdown)(struct mcb_device *mdev);
|
||||
};
|
||||
#define to_mcb_driver(x) container_of((x), struct mcb_driver, driver)
|
||||
|
||||
static inline void *mcb_get_drvdata(struct mcb_device *dev)
|
||||
{
|
||||
return dev_get_drvdata(&dev->dev);
|
||||
}
|
||||
|
||||
static inline void mcb_set_drvdata(struct mcb_device *dev, void *data)
|
||||
{
|
||||
dev_set_drvdata(&dev->dev, data);
|
||||
}
|
||||
|
||||
extern int __must_check __mcb_register_driver(struct mcb_driver *drv,
|
||||
struct module *owner,
|
||||
const char *mod_name);
|
||||
#define mcb_register_driver(driver) \
|
||||
__mcb_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
|
||||
extern void mcb_unregister_driver(struct mcb_driver *driver);
|
||||
#define module_mcb_driver(__mcb_driver) \
|
||||
module_driver(__mcb_driver, mcb_register_driver, mcb_unregister_driver);
|
||||
extern void mcb_bus_add_devices(const struct mcb_bus *bus);
|
||||
extern int mcb_device_register(struct mcb_bus *bus, struct mcb_device *dev);
|
||||
extern struct mcb_bus *mcb_alloc_bus(void);
|
||||
extern struct mcb_bus *mcb_bus_get(struct mcb_bus *bus);
|
||||
extern void mcb_bus_put(struct mcb_bus *bus);
|
||||
extern struct mcb_device *mcb_alloc_dev(struct mcb_bus *bus);
|
||||
extern void mcb_free_dev(struct mcb_device *dev);
|
||||
extern void mcb_release_bus(struct mcb_bus *bus);
|
||||
extern struct resource *mcb_request_mem(struct mcb_device *dev,
|
||||
const char *name);
|
||||
extern void mcb_release_mem(struct resource *mem);
|
||||
extern int mcb_get_irq(struct mcb_device *dev);
|
||||
|
||||
#endif /* _LINUX_MCB_H */
|
||||
|
|
@ -607,4 +607,9 @@ struct rio_device_id {
|
|||
__u16 asm_did, asm_vid;
|
||||
};
|
||||
|
||||
struct mcb_device_id {
|
||||
__u16 device;
|
||||
kernel_ulong_t driver_data;
|
||||
};
|
||||
|
||||
#endif /* LINUX_MOD_DEVICETABLE_H */
|
||||
|
|
|
|||
Loading…
Reference in New Issue