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/* SPDX-License-Identifier: GPL-2.0-or-later / / * RapidIO driver services * * Copyright 2005 MontaVista Software, Inc. * Matt Porter <mporter@kernel.crashing.org> / #ifndef LINUX_RIO_DRV_H #define LINUX_RIO_DRV_H #include <linux/types.h> #include <linux/ioport.h> #include <linux/list.h> #include <linux/errno.h> #include <linux/string.h> #include <linux/rio.h> extern int __rio_local_read_config_32(struct rio_mport port, u32 offset, u32 * data); extern int __rio_local_write_config_32(struct rio_mport port, u32 offset, u32 data); extern int __rio_local_read_config_16(struct rio_mport port, u32 offset, u16 * data); extern int __rio_local_write_config_16(struct rio_mport port, u32 offset, u16 data); extern int __rio_local_read_config_8(struct rio_mport port, u32 offset, u8 * data); extern int __rio_local_write_config_8(struct rio_mport port, u32 offset, u8 data); extern int rio_mport_read_config_32(struct rio_mport port, u16 destid, u8 hopcount, u32 offset, u32 * data); extern int rio_mport_write_config_32(struct rio_mport port, u16 destid, u8 hopcount, u32 offset, u32 data); extern int rio_mport_read_config_16(struct rio_mport port, u16 destid, u8 hopcount, u32 offset, u16 * data); extern int rio_mport_write_config_16(struct rio_mport port, u16 destid, u8 hopcount, u32 offset, u16 data); extern int rio_mport_read_config_8(struct rio_mport port, u16 destid, u8 hopcount, u32 offset, u8 * data); extern int rio_mport_write_config_8(struct rio_mport port, u16 destid, u8 hopcount, u32 offset, u8 data); /* * rio_local_read_config_32 - Read 32 bits from local configuration space * @port: Master port * @offset: Offset into local configuration space * @data: Pointer to read data into * * Reads 32 bits of data from the specified offset within the local * device's configuration space. / static inline int rio_local_read_config_32(struct rio_mport port, u32 offset, u32 * data) { return __rio_local_read_config_32(port, offset, data); } /** * rio_local_write_config_32 - Write 32 bits to local configuration space * @port: Master port * @offset: Offset into local configuration space * @data: Data to be written * * Writes 32 bits of data to the specified offset within the local * device's configuration space. / static inline int rio_local_write_config_32(struct rio_mport port, u32 offset, u32 data) { return __rio_local_write_config_32(port, offset, data); } /** * rio_local_read_config_16 - Read 16 bits from local configuration space * @port: Master port * @offset: Offset into local configuration space * @data: Pointer to read data into * * Reads 16 bits of data from the specified offset within the local * device's configuration space. / static inline int rio_local_read_config_16(struct rio_mport port, u32 offset, u16 * data) { return __rio_local_read_config_16(port, offset, data); } /** * rio_local_write_config_16 - Write 16 bits to local configuration space * @port: Master port * @offset: Offset into local configuration space * @data: Data to be written * * Writes 16 bits of data to the specified offset within the local * device's configuration space. / static inline int rio_local_write_config_16(struct rio_mport port, u32 offset, u16 data) { return __rio_local_write_config_16(port, offset, data); } /** * rio_local_read_config_8 - Read 8 bits from local configuration space * @port: Master port * @offset: Offset into local configuration space * @data: Pointer to read data into * * Reads 8 bits of data from the specified offset within the local * device's configuration space. / static inline int rio_local_read_config_8(struct rio_mport port, u32 offset, u8 * data) { return __rio_local_read_config_8(port, offset, data); } /** * rio_local_write_config_8 - Write 8 bits to local configuration space * @port: Master port * @offset: Offset into local configuration space * @data: Data to be written * * Writes 8 bits of data to the specified offset within the local * device's configuration space. / static inline int rio_local_write_config_8(struct rio_mport port, u32 offset, u8 data) { return __rio_local_write_config_8(port, offset, data); } /** * rio_read_config_32 - Read 32 bits from configuration space * @rdev: RIO device * @offset: Offset into device configuration space * @data: Pointer to read data into * * Reads 32 bits of data from the specified offset within the * RIO device's configuration space. / static inline int rio_read_config_32(struct rio_dev rdev, u32 offset, u32 * data) { return rio_mport_read_config_32(rdev->net->hport, rdev->destid, rdev->hopcount, offset, data); }; /** * rio_write_config_32 - Write 32 bits to configuration space * @rdev: RIO device * @offset: Offset into device configuration space * @data: Data to be written * * Writes 32 bits of data to the specified offset within the * RIO device's configuration space. / static inline int rio_write_config_32(struct rio_dev rdev, u32 offset, u32 data) { return rio_mport_write_config_32(rdev->net->hport, rdev->destid, rdev->hopcount, offset, data); }; /** * rio_read_config_16 - Read 16 bits from configuration space * @rdev: RIO device * @offset: Offset into device configuration space * @data: Pointer to read data into * * Reads 16 bits of data from the specified offset within the * RIO device's configuration space. / static inline int rio_read_config_16(struct rio_dev rdev, u32 offset, u16 * data) { return rio_mport_read_config_16(rdev->net->hport, rdev->destid, rdev->hopcount, offset, data); }; /** * rio_write_config_16 - Write 16 bits to configuration space * @rdev: RIO device * @offset: Offset into device configuration space * @data: Data to be written * * Writes 16 bits of data to the specified offset within the * RIO device's configuration space. / static inline int rio_write_config_16(struct rio_dev rdev, u32 offset, u16 data) { return rio_mport_write_config_16(rdev->net->hport, rdev->destid, rdev->hopcount, offset, data); }; /** * rio_read_config_8 - Read 8 bits from configuration space * @rdev: RIO device * @offset: Offset into device configuration space * @data: Pointer to read data into * * Reads 8 bits of data from the specified offset within the * RIO device's configuration space. / static inline int rio_read_config_8(struct rio_dev rdev, u32 offset, u8 * data) { return rio_mport_read_config_8(rdev->net->hport, rdev->destid, rdev->hopcount, offset, data); }; /** * rio_write_config_8 - Write 8 bits to configuration space * @rdev: RIO device * @offset: Offset into device configuration space * @data: Data to be written * * Writes 8 bits of data to the specified offset within the * RIO device's configuration space. / static inline int rio_write_config_8(struct rio_dev rdev, u32 offset, u8 data) { return rio_mport_write_config_8(rdev->net->hport, rdev->destid, rdev->hopcount, offset, data); }; extern int rio_mport_send_doorbell(struct rio_mport mport, u16 destid, u16 data); /* * rio_send_doorbell - Send a doorbell message to a device * @rdev: RIO device * @data: Doorbell message data * * Send a doorbell message to a RIO device. The doorbell message * has a 16-bit info field provided by the @data argument. / static inline int rio_send_doorbell(struct rio_dev rdev, u16 data) { return rio_mport_send_doorbell(rdev->net->hport, rdev->destid, data); }; /** * rio_init_mbox_res - Initialize a RIO mailbox resource * @res: resource struct * @start: start of mailbox range * @end: end of mailbox range * * This function is used to initialize the fields of a resource * for use as a mailbox resource. It initializes a range of * mailboxes using the start and end arguments. / static inline void rio_init_mbox_res(struct resource res, int start, int end) { memset(res, 0, sizeof(struct resource)); res->start = start; res->end = end; res->flags = RIO_RESOURCE_MAILBOX; } /** * rio_init_dbell_res - Initialize a RIO doorbell resource * @res: resource struct * @start: start of doorbell range * @end: end of doorbell range * * This function is used to initialize the fields of a resource * for use as a doorbell resource. It initializes a range of * doorbell messages using the start and end arguments. / static inline void rio_init_dbell_res(struct resource res, u16 start, u16 end) { memset(res, 0, sizeof(struct resource)); res->start = start; res->end = end; res->flags = RIO_RESOURCE_DOORBELL; } /** * RIO_DEVICE - macro used to describe a specific RIO device * @dev: the 16 bit RIO device ID * @ven: the 16 bit RIO vendor ID * * This macro is used to create a struct rio_device_id that matches a * specific device. The assembly vendor and assembly device fields * will be set to %RIO_ANY_ID. / #define RIO_DEVICE(dev,ven) \ .did = (dev), .vid = (ven), \ .asm_did = RIO_ANY_ID, .asm_vid = RIO_ANY_ID / Mailbox management / extern int rio_request_outb_mbox(struct rio_mport , void , int, int, void ()(struct rio_mport , void ,int, int)); extern int rio_release_outb_mbox(struct rio_mport , int); /* * rio_add_outb_message - Add RIO message to an outbound mailbox queue * @mport: RIO master port containing the outbound queue * @rdev: RIO device the message is be sent to * @mbox: The outbound mailbox queue * @buffer: Pointer to the message buffer * @len: Length of the message buffer * * Adds a RIO message buffer to an outbound mailbox queue for * transmission. Returns 0 on success. / static inline int rio_add_outb_message(struct rio_mport mport, struct rio_dev rdev, int mbox, void buffer, size_t len) { return mport->ops->add_outb_message(mport, rdev, mbox, buffer, len); } extern int rio_request_inb_mbox(struct rio_mport , void , int, int, void ()(struct rio_mport , void , int, int)); extern int rio_release_inb_mbox(struct rio_mport , int); /** * rio_add_inb_buffer - Add buffer to an inbound mailbox queue * @mport: Master port containing the inbound mailbox * @mbox: The inbound mailbox number * @buffer: Pointer to the message buffer * * Adds a buffer to an inbound mailbox queue for reception. Returns * 0 on success. / static inline int rio_add_inb_buffer(struct rio_mport mport, int mbox, void buffer) { return mport->ops->add_inb_buffer(mport, mbox, buffer); } /* * rio_get_inb_message - Get A RIO message from an inbound mailbox queue * @mport: Master port containing the inbound mailbox * @mbox: The inbound mailbox number * * Get a RIO message from an inbound mailbox queue. Returns 0 on success. / static inline void rio_get_inb_message(struct rio_mport mport, int mbox) { return mport->ops->get_inb_message(mport, mbox); } / Doorbell management / extern int rio_request_inb_dbell(struct rio_mport , void , u16, u16, void ()(struct rio_mport , void , u16, u16, u16)); extern int rio_release_inb_dbell(struct rio_mport , u16, u16); extern struct resource rio_request_outb_dbell(struct rio_dev , u16, u16); extern int rio_release_outb_dbell(struct rio_dev , struct resource ); / Memory region management / int rio_claim_resource(struct rio_dev , int); int rio_request_regions(struct rio_dev , char ); void rio_release_regions(struct rio_dev ); int rio_request_region(struct rio_dev , int, char ); void rio_release_region(struct rio_dev , int); /* Memory mapping functions / extern int rio_map_inb_region(struct rio_mport mport, dma_addr_t local, u64 rbase, u32 size, u32 rflags); extern void rio_unmap_inb_region(struct rio_mport mport, dma_addr_t lstart); extern int rio_map_outb_region(struct rio_mport mport, u16 destid, u64 rbase, u32 size, u32 rflags, dma_addr_t local); extern void rio_unmap_outb_region(struct rio_mport mport, u16 destid, u64 rstart); /* Port-Write management / extern int rio_request_inb_pwrite(struct rio_dev , int ()(struct rio_dev , union rio_pw_msg, int)); extern int rio_release_inb_pwrite(struct rio_dev ); extern int rio_add_mport_pw_handler(struct rio_mport mport, void dev_id, int (pwcback)(struct rio_mport mport, void dev_id, union rio_pw_msg msg, int step)); extern int rio_del_mport_pw_handler(struct rio_mport mport, void dev_id, int (pwcback)(struct rio_mport mport, void dev_id, union rio_pw_msg msg, int step)); extern int rio_inb_pwrite_handler(struct rio_mport mport, union rio_pw_msg pw_msg); extern void rio_pw_enable(struct rio_mport mport, int enable); / LDM support / int rio_register_driver(struct rio_driver ); void rio_unregister_driver(struct rio_driver ); struct rio_dev rio_dev_get(struct rio_dev ); void rio_dev_put(struct rio_dev ); #ifdef CONFIG_RAPIDIO_DMA_ENGINE extern struct dma_chan rio_request_dma(struct rio_dev rdev); extern struct dma_chan rio_request_mport_dma(struct rio_mport mport); extern void rio_release_dma(struct dma_chan dchan); extern struct dma_async_tx_descriptor rio_dma_prep_slave_sg( struct rio_dev rdev, struct dma_chan dchan, struct rio_dma_data data, enum dma_transfer_direction direction, unsigned long flags); extern struct dma_async_tx_descriptor rio_dma_prep_xfer( struct dma_chan dchan, u16 destid, struct rio_dma_data data, enum dma_transfer_direction direction, unsigned long flags); #endif /** * rio_name - Get the unique RIO device identifier * @rdev: RIO device * * Get the unique RIO device identifier. Returns the device * identifier string. / static inline const char rio_name(struct rio_dev rdev) { return dev_name(&rdev->dev); } /* * rio_get_drvdata - Get RIO driver specific data * @rdev: RIO device * * Get RIO driver specific data. Returns a pointer to the * driver specific data. / static inline void rio_get_drvdata(struct rio_dev rdev) { return dev_get_drvdata(&rdev->dev); } /* * rio_set_drvdata - Set RIO driver specific data * @rdev: RIO device * @data: Pointer to driver specific data * * Set RIO driver specific data. device struct driver data pointer * is set to the @data argument. / static inline void rio_set_drvdata(struct rio_dev rdev, void data) { dev_set_drvdata(&rdev->dev, data); } / Misc driver helpers / extern u16 rio_local_get_device_id(struct rio_mport port); extern void rio_local_set_device_id(struct rio_mport port, u16 did); extern struct rio_dev rio_get_device(u16 vid, u16 did, struct rio_dev from); extern struct rio_dev rio_get_asm(u16 vid, u16 did, u16 asm_vid, u16 asm_did, struct rio_dev from); extern int rio_init_mports(void); #endif / LINUX_RIO_DRV_H */

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