mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
248 lines
5.7 KiB
C
248 lines
5.7 KiB
C
![]() |
/*
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* Broadcom specific AMBA
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* Bus subsystem
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*
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* Licensed under the GNU/GPL. See COPYING for details.
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*/
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#include "bcma_private.h"
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#include <linux/bcma/bcma.h>
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MODULE_DESCRIPTION("Broadcom's specific AMBA driver");
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MODULE_LICENSE("GPL");
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static int bcma_bus_match(struct device *dev, struct device_driver *drv);
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static int bcma_device_probe(struct device *dev);
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static int bcma_device_remove(struct device *dev);
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static ssize_t manuf_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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return sprintf(buf, "0x%03X\n", core->id.manuf);
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}
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static ssize_t id_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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return sprintf(buf, "0x%03X\n", core->id.id);
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}
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static ssize_t rev_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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return sprintf(buf, "0x%02X\n", core->id.rev);
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}
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static ssize_t class_show(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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return sprintf(buf, "0x%X\n", core->id.class);
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}
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static struct device_attribute bcma_device_attrs[] = {
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__ATTR_RO(manuf),
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__ATTR_RO(id),
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__ATTR_RO(rev),
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__ATTR_RO(class),
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__ATTR_NULL,
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};
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static struct bus_type bcma_bus_type = {
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.name = "bcma",
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.match = bcma_bus_match,
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.probe = bcma_device_probe,
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.remove = bcma_device_remove,
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.dev_attrs = bcma_device_attrs,
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};
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static struct bcma_device *bcma_find_core(struct bcma_bus *bus, u16 coreid)
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{
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struct bcma_device *core;
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list_for_each_entry(core, &bus->cores, list) {
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if (core->id.id == coreid)
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return core;
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}
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return NULL;
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}
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static void bcma_release_core_dev(struct device *dev)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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kfree(core);
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}
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static int bcma_register_cores(struct bcma_bus *bus)
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{
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struct bcma_device *core;
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int err, dev_id = 0;
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list_for_each_entry(core, &bus->cores, list) {
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/* We support that cores ourself */
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switch (core->id.id) {
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case BCMA_CORE_CHIPCOMMON:
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case BCMA_CORE_PCI:
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case BCMA_CORE_PCIE:
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continue;
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}
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core->dev.release = bcma_release_core_dev;
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core->dev.bus = &bcma_bus_type;
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dev_set_name(&core->dev, "bcma%d:%d", 0/*bus->num*/, dev_id);
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switch (bus->hosttype) {
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case BCMA_HOSTTYPE_PCI:
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core->dev.parent = &bus->host_pci->dev;
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break;
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case BCMA_HOSTTYPE_NONE:
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case BCMA_HOSTTYPE_SDIO:
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break;
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}
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err = device_register(&core->dev);
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if (err) {
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pr_err("Could not register dev for core 0x%03X\n",
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core->id.id);
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continue;
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}
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core->dev_registered = true;
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dev_id++;
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}
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return 0;
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}
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static void bcma_unregister_cores(struct bcma_bus *bus)
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{
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struct bcma_device *core;
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list_for_each_entry(core, &bus->cores, list) {
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if (core->dev_registered)
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device_unregister(&core->dev);
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}
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}
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int bcma_bus_register(struct bcma_bus *bus)
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{
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int err;
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struct bcma_device *core;
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/* Scan for devices (cores) */
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err = bcma_bus_scan(bus);
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if (err) {
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pr_err("Failed to scan: %d\n", err);
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return -1;
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}
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/* Init CC core */
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core = bcma_find_core(bus, BCMA_CORE_CHIPCOMMON);
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if (core) {
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bus->drv_cc.core = core;
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bcma_core_chipcommon_init(&bus->drv_cc);
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}
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/* Init PCIE core */
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core = bcma_find_core(bus, BCMA_CORE_PCIE);
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if (core) {
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bus->drv_pci.core = core;
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bcma_core_pci_init(&bus->drv_pci);
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}
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/* Register found cores */
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bcma_register_cores(bus);
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pr_info("Bus registered\n");
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return 0;
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}
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EXPORT_SYMBOL_GPL(bcma_bus_register);
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void bcma_bus_unregister(struct bcma_bus *bus)
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{
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bcma_unregister_cores(bus);
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}
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EXPORT_SYMBOL_GPL(bcma_bus_unregister);
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int __bcma_driver_register(struct bcma_driver *drv, struct module *owner)
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{
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drv->drv.name = drv->name;
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drv->drv.bus = &bcma_bus_type;
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drv->drv.owner = owner;
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return driver_register(&drv->drv);
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}
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EXPORT_SYMBOL_GPL(__bcma_driver_register);
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void bcma_driver_unregister(struct bcma_driver *drv)
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{
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driver_unregister(&drv->drv);
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}
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EXPORT_SYMBOL_GPL(bcma_driver_unregister);
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static int bcma_bus_match(struct device *dev, struct device_driver *drv)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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struct bcma_driver *adrv = container_of(drv, struct bcma_driver, drv);
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const struct bcma_device_id *cid = &core->id;
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const struct bcma_device_id *did;
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for (did = adrv->id_table; did->manuf || did->id || did->rev; did++) {
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if ((did->manuf == cid->manuf || did->manuf == BCMA_ANY_MANUF) &&
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(did->id == cid->id || did->id == BCMA_ANY_ID) &&
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(did->rev == cid->rev || did->rev == BCMA_ANY_REV) &&
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(did->class == cid->class || did->class == BCMA_ANY_CLASS))
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return 1;
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}
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return 0;
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}
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static int bcma_device_probe(struct device *dev)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
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drv);
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int err = 0;
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if (adrv->probe)
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err = adrv->probe(core);
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return err;
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}
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static int bcma_device_remove(struct device *dev)
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{
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struct bcma_device *core = container_of(dev, struct bcma_device, dev);
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struct bcma_driver *adrv = container_of(dev->driver, struct bcma_driver,
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drv);
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if (adrv->remove)
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adrv->remove(core);
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return 0;
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}
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static int __init bcma_modinit(void)
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{
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int err;
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err = bus_register(&bcma_bus_type);
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if (err)
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return err;
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#ifdef CONFIG_BCMA_HOST_PCI
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err = bcma_host_pci_init();
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if (err) {
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pr_err("PCI host initialization failed\n");
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err = 0;
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}
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#endif
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return err;
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}
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fs_initcall(bcma_modinit);
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static void __exit bcma_modexit(void)
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{
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#ifdef CONFIG_BCMA_HOST_PCI
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bcma_host_pci_exit();
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#endif
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bus_unregister(&bcma_bus_type);
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}
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module_exit(bcma_modexit)
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