Initial import

1 files changed, 110 insertions, 0 deletions

diff --git a/include/linux/mic_bus.h b/include/linux/mic_bus.h
new file mode 100644
index 000000000..d5b5f76d5
--- /dev/null
+++ b/include/linux/mic_bus.h
@@ -0,0 +1,110 @@
+/*
+ * Intel MIC Platform Software Stack (MPSS)
+ *
+ * Copyright(c) 2014 Intel Corporation.
+ *
+ * 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.
+ *
+ * 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.
+ *
+ * The full GNU General Public License is included in this distribution in
+ * the file called "COPYING".
+ *
+ * Intel MIC Bus driver.
+ *
+ * This implementation is very similar to the the virtio bus driver
+ * implementation @ include/linux/virtio.h.
+ */
+#ifndef _MIC_BUS_H_
+#define _MIC_BUS_H_
+/*
+ * Everything a mbus driver needs to work with any particular mbus
+ * implementation.
+ */
+#include <linux/interrupt.h>
+#include <linux/dma-mapping.h>
+
+struct mbus_device_id {
+	__u32 device;
+	__u32 vendor;
+};
+
+#define MBUS_DEV_DMA_HOST 2
+#define MBUS_DEV_DMA_MIC 3
+#define MBUS_DEV_ANY_ID 0xffffffff
+
+/**
+ * mbus_device - representation of a device using mbus
+ * @mmio_va: virtual address of mmio space
+ * @hw_ops: the hardware ops supported by this device.
+ * @id: the device type identification (used to match it with a driver).
+ * @dev: underlying device.
+ * be used to communicate with.
+ * @index: unique position on the mbus bus
+ */
+struct mbus_device {
+	void __iomem *mmio_va;
+	struct mbus_hw_ops *hw_ops;
+	struct mbus_device_id id;
+	struct device dev;
+	int index;
+};
+
+/**
+ * mbus_driver - operations for a mbus I/O driver
+ * @driver: underlying device driver (populate name and owner).
+ * @id_table: the ids serviced by this driver.
+ * @probe: the function to call when a device is found.  Returns 0 or -errno.
+ * @remove: the function to call when a device is removed.
+ */
+struct mbus_driver {
+	struct device_driver driver;
+	const struct mbus_device_id *id_table;
+	int (*probe)(struct mbus_device *dev);
+	void (*scan)(struct mbus_device *dev);
+	void (*remove)(struct mbus_device *dev);
+};
+
+/**
+ * struct mic_irq - opaque pointer used as cookie
+ */
+struct mic_irq;
+
+/**
+ * mbus_hw_ops - Hardware operations for accessing a MIC device on the MIC bus.
+ */
+struct mbus_hw_ops {
+	struct mic_irq* (*request_threaded_irq)(struct mbus_device *mbdev,
+						irq_handler_t handler,
+						irq_handler_t thread_fn,
+						const char *name, void *data,
+						int intr_src);
+	void (*free_irq)(struct mbus_device *mbdev,
+			 struct mic_irq *cookie, void *data);
+	void (*ack_interrupt)(struct mbus_device *mbdev, int num);
+};
+
+struct mbus_device *
+mbus_register_device(struct device *pdev, int id, struct dma_map_ops *dma_ops,
+		     struct mbus_hw_ops *hw_ops, void __iomem *mmio_va);
+void mbus_unregister_device(struct mbus_device *mbdev);
+
+int mbus_register_driver(struct mbus_driver *drv);
+void mbus_unregister_driver(struct mbus_driver *drv);
+
+static inline struct mbus_device *dev_to_mbus(struct device *_dev)
+{
+	return container_of(_dev, struct mbus_device, dev);
+}
+
+static inline struct mbus_driver *drv_to_mbus(struct device_driver *drv)
+{
+	return container_of(drv, struct mbus_driver, driver);
+}
+
+#endif /* _MIC_BUS_H */