1 files changed, 272 insertions, 0 deletions

diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c
new file mode 100644
index 000000000000..cca5f8522469
--- /dev/null
+++ b/drivers/misc/tifm_core.c
@@ -0,0 +1,272 @@
+/*
+ *  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 0;
+                }
+                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 = 0;
+        }
+
+        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);