diff options
Diffstat (limited to 'drivers/misc/mic/bus/vop_bus.h')
| -rw-r--r-- | drivers/misc/mic/bus/vop_bus.h | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/drivers/misc/mic/bus/vop_bus.h b/drivers/misc/mic/bus/vop_bus.h deleted file mode 100644 index 4fa02808c1e2..000000000000 --- a/drivers/misc/mic/bus/vop_bus.h +++ /dev/null @@ -1,129 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0-only */ -/* - * Intel MIC Platform Software Stack (MPSS) - * - * Copyright(c) 2016 Intel Corporation. - * - * Intel Virtio over PCIe Bus driver. - */ -#ifndef _VOP_BUS_H_ -#define _VOP_BUS_H_ -/* - * Everything a vop driver needs to work with any particular vop - * implementation. - */ -#include <linux/dmaengine.h> -#include <linux/interrupt.h> - -#include "../common/mic_dev.h" - -struct vop_device_id { - u32 device; - u32 vendor; -}; - -#define VOP_DEV_TRNSP 1 -#define VOP_DEV_ANY_ID 0xffffffff -/* - * Size of the internal buffer used during DMA's as an intermediate buffer - * for copy to/from user. Must be an integral number of pages. - */ -#define VOP_INT_DMA_BUF_SIZE PAGE_ALIGN(64 * 1024ULL) - -/** - * vop_device - representation of a device using vop - * @hw_ops: the hardware ops supported by this device. - * @id: the device type identification (used to match it with a driver). - * @dev: underlying device. - * @dnode - The destination node which this device will communicate with. - * @aper: Aperture memory window - * @dma_ch - DMA channel - * @index: unique position on the vop bus - */ -struct vop_device { - struct vop_hw_ops *hw_ops; - struct vop_device_id id; - struct device dev; - u8 dnode; - struct mic_mw *aper; - struct dma_chan *dma_ch; - int index; -}; - -/** - * vop_driver - operations for a vop 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 vop_driver { - struct device_driver driver; - const struct vop_device_id *id_table; - int (*probe)(struct vop_device *dev); - void (*remove)(struct vop_device *dev); -}; - -/** - * vop_hw_ops - Hardware operations for accessing a VOP device on the VOP bus. - * - * @next_db: Obtain the next available doorbell. - * @request_irq: Request an interrupt on a particular doorbell. - * @free_irq: Free an interrupt requested previously. - * @ack_interrupt: acknowledge an interrupt in the ISR. - * @get_remote_dp: Get access to the virtio device page used by the remote - * node to add/remove/configure virtio devices. - * @get_dp: Get access to the virtio device page used by the self - * node to add/remove/configure virtio devices. - * @send_intr: Send an interrupt to the peer node on a specified doorbell. - * @remap: Map a buffer with the specified DMA address and length. - * @unmap: Unmap a buffer previously mapped. - * @dma_filter: The DMA filter function to use for obtaining access to - * a DMA channel on the peer node. - */ -struct vop_hw_ops { - int (*next_db)(struct vop_device *vpdev); - struct mic_irq *(*request_irq)(struct vop_device *vpdev, - irqreturn_t (*func)(int irq, void *data), - const char *name, void *data, - int intr_src); - void (*free_irq)(struct vop_device *vpdev, - struct mic_irq *cookie, void *data); - void (*ack_interrupt)(struct vop_device *vpdev, int num); - void __iomem * (*get_remote_dp)(struct vop_device *vpdev); - void * (*get_dp)(struct vop_device *vpdev); - void (*send_intr)(struct vop_device *vpdev, int db); - void __iomem * (*remap)(struct vop_device *vpdev, - dma_addr_t pa, size_t len); - void (*unmap)(struct vop_device *vpdev, void __iomem *va); -}; - -struct vop_device * -vop_register_device(struct device *pdev, int id, - const struct dma_map_ops *dma_ops, - struct vop_hw_ops *hw_ops, u8 dnode, struct mic_mw *aper, - struct dma_chan *chan); -void vop_unregister_device(struct vop_device *dev); -int vop_register_driver(struct vop_driver *drv); -void vop_unregister_driver(struct vop_driver *drv); - -/* - * module_vop_driver() - Helper macro for drivers that don't do - * anything special in module init/exit. This eliminates a lot of - * boilerplate. Each module may only use this macro once, and - * calling it replaces module_init() and module_exit() - */ -#define module_vop_driver(__vop_driver) \ - module_driver(__vop_driver, vop_register_driver, \ - vop_unregister_driver) - -static inline struct vop_device *dev_to_vop(struct device *dev) -{ - return container_of(dev, struct vop_device, dev); -} - -static inline struct vop_driver *drv_to_vop(struct device_driver *drv) -{ - return container_of(drv, struct vop_driver, driver); -} -#endif /* _VOP_BUS_H */ |