--- /dev/null
+/*
+ * tifm_core.c - TI FlashMedia driver
+ *
+ * Copyright (C) 2006 Alex Dubov <oakad@yahoo.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <linux/tifm.h>
+#include <linux/init.h>
+#include <linux/idr.h>
+
+#define DRIVER_NAME "tifm_core"
+#define DRIVER_VERSION "0.6"
+
+static DEFINE_IDR(tifm_adapter_idr);
+static DEFINE_SPINLOCK(tifm_adapter_lock);
+
+static tifm_media_id *tifm_device_match(tifm_media_id *ids,
+ struct tifm_dev *dev)
+{
+ while (*ids) {
+ if (dev->media_id == *ids)
+ return ids;
+ ids++;
+ }
+ return NULL;
+}
+
+static int tifm_match(struct device *dev, struct device_driver *drv)
+{
+ struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *fm_drv;
+
+ fm_drv = container_of(drv, struct tifm_driver, driver);
+ if (!fm_drv->id_table)
+ return -EINVAL;
+ if (tifm_device_match(fm_drv->id_table, fm_dev))
+ return 1;
+ return -ENODEV;
+}
+
+static int tifm_uevent(struct device *dev, char **envp, int num_envp,
+ char *buffer, int buffer_size)
+{
+ struct tifm_dev *fm_dev;
+ int i = 0;
+ int length = 0;
+ const char *card_type_name[] = {"INV", "SM", "MS", "SD"};
+
+ if (!dev || !(fm_dev = container_of(dev, struct tifm_dev, dev)))
+ return -ENODEV;
+ if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length,
+ "TIFM_CARD_TYPE=%s", card_type_name[fm_dev->media_id]))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static struct bus_type tifm_bus_type = {
+ .name = "tifm",
+ .match = tifm_match,
+ .uevent = tifm_uevent,
+};
+
+static void tifm_free(struct class_device *cdev)
+{
+ struct tifm_adapter *fm = container_of(cdev, struct tifm_adapter, cdev);
+
+ kfree(fm->sockets);
+ if (fm->wq)
+ destroy_workqueue(fm->wq);
+ kfree(fm);
+}
+
+static struct class tifm_adapter_class = {
+ .name = "tifm_adapter",
+ .release = tifm_free
+};
+
+struct tifm_adapter *tifm_alloc_adapter(void)
+{
+ struct tifm_adapter *fm;
+
+ fm = kzalloc(sizeof(struct tifm_adapter), GFP_KERNEL);
+ if (fm) {
+ fm->cdev.class = &tifm_adapter_class;
+ spin_lock_init(&fm->lock);
+ class_device_initialize(&fm->cdev);
+ }
+ return fm;
+}
+EXPORT_SYMBOL(tifm_alloc_adapter);
+
+void tifm_free_adapter(struct tifm_adapter *fm)
+{
+ class_device_put(&fm->cdev);
+}
+EXPORT_SYMBOL(tifm_free_adapter);
+
+int tifm_add_adapter(struct tifm_adapter *fm)
+{
+ int rc;
+
+ if (!idr_pre_get(&tifm_adapter_idr, GFP_KERNEL))
+ return -ENOMEM;
+
+ spin_lock(&tifm_adapter_lock);
+ rc = idr_get_new(&tifm_adapter_idr, fm, &fm->id);
+ spin_unlock(&tifm_adapter_lock);
+ if (!rc) {
+ snprintf(fm->cdev.class_id, BUS_ID_SIZE, "tifm%u", fm->id);
+ strncpy(fm->wq_name, fm->cdev.class_id, KOBJ_NAME_LEN);
+
+ fm->wq = create_singlethread_workqueue(fm->wq_name);
+ if (fm->wq)
+ return class_device_add(&fm->cdev);
+
+ spin_lock(&tifm_adapter_lock);
+ idr_remove(&tifm_adapter_idr, fm->id);
+ spin_unlock(&tifm_adapter_lock);
+ rc = -ENOMEM;
+ }
+ return rc;
+}
+EXPORT_SYMBOL(tifm_add_adapter);
+
+void tifm_remove_adapter(struct tifm_adapter *fm)
+{
+ class_device_del(&fm->cdev);
+
+ spin_lock(&tifm_adapter_lock);
+ idr_remove(&tifm_adapter_idr, fm->id);
+ spin_unlock(&tifm_adapter_lock);
+}
+EXPORT_SYMBOL(tifm_remove_adapter);
+
+void tifm_free_device(struct device *dev)
+{
+ struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
+ if (fm_dev->wq)
+ destroy_workqueue(fm_dev->wq);
+ kfree(fm_dev);
+}
+EXPORT_SYMBOL(tifm_free_device);
+
+struct tifm_dev *tifm_alloc_device(struct tifm_adapter *fm, unsigned int id)
+{
+ struct tifm_dev *dev = kzalloc(sizeof(struct tifm_dev), GFP_KERNEL);
+
+ if (dev) {
+ spin_lock_init(&dev->lock);
+ snprintf(dev->wq_name, KOBJ_NAME_LEN, "tifm%u:%u", fm->id, id);
+ dev->wq = create_singlethread_workqueue(dev->wq_name);
+ if (!dev->wq) {
+ kfree(dev);
+ return NULL;
+ }
+ dev->dev.parent = fm->dev;
+ dev->dev.bus = &tifm_bus_type;
+ dev->dev.release = tifm_free_device;
+ }
+ return dev;
+}
+EXPORT_SYMBOL(tifm_alloc_device);
+
+void tifm_eject(struct tifm_dev *sock)
+{
+ struct tifm_adapter *fm = dev_get_drvdata(sock->dev.parent);
+ fm->eject(fm, sock);
+}
+EXPORT_SYMBOL(tifm_eject);
+
+int tifm_map_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
+ int direction)
+{
+ return pci_map_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
+}
+EXPORT_SYMBOL(tifm_map_sg);
+
+void tifm_unmap_sg(struct tifm_dev *sock, struct scatterlist *sg, int nents,
+ int direction)
+{
+ pci_unmap_sg(to_pci_dev(sock->dev.parent), sg, nents, direction);
+}
+EXPORT_SYMBOL(tifm_unmap_sg);
+
+static int tifm_device_probe(struct device *dev)
+{
+ struct tifm_driver *drv;
+ struct tifm_dev *fm_dev;
+ int rc = 0;
+ const tifm_media_id *id;
+
+ drv = container_of(dev->driver, struct tifm_driver, driver);
+ fm_dev = container_of(dev, struct tifm_dev, dev);
+ get_device(dev);
+ if (!fm_dev->drv && drv->probe && drv->id_table) {
+ rc = -ENODEV;
+ id = tifm_device_match(drv->id_table, fm_dev);
+ if (id)
+ rc = drv->probe(fm_dev);
+ if (rc >= 0) {
+ rc = 0;
+ fm_dev->drv = drv;
+ }
+ }
+ if (rc)
+ put_device(dev);
+ return rc;
+}
+
+static int tifm_device_remove(struct device *dev)
+{
+ struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
+ struct tifm_driver *drv = fm_dev->drv;
+
+ if (drv) {
+ if (drv->remove)
+ drv->remove(fm_dev);
+ fm_dev->drv = NULL;
+ }
+
+ put_device(dev);
+ return 0;
+}
+
+int tifm_register_driver(struct tifm_driver *drv)
+{
+ drv->driver.bus = &tifm_bus_type;
+ drv->driver.probe = tifm_device_probe;
+ drv->driver.remove = tifm_device_remove;
+
+ return driver_register(&drv->driver);
+}
+EXPORT_SYMBOL(tifm_register_driver);
+
+void tifm_unregister_driver(struct tifm_driver *drv)
+{
+ driver_unregister(&drv->driver);
+}
+EXPORT_SYMBOL(tifm_unregister_driver);
+
+static int __init tifm_init(void)
+{
+ int rc = bus_register(&tifm_bus_type);
+
+ if (!rc) {
+ rc = class_register(&tifm_adapter_class);
+ if (rc)
+ bus_unregister(&tifm_bus_type);
+ }
+
+ return rc;
+}
+
+static void __exit tifm_exit(void)
+{
+ class_unregister(&tifm_adapter_class);
+ bus_unregister(&tifm_bus_type);
+}
+
+subsys_initcall(tifm_init);
+module_exit(tifm_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alex Dubov");
+MODULE_DESCRIPTION("TI FlashMedia core driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
git://git.onelab.eu / linux-2.6.git / blobdiff