| /* |
| * RapidIO driver services |
| * |
| * Copyright 2005 MontaVista Software, Inc. |
| * Matt Porter <mporter@kernel.crashing.org> |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| */ |
| |
| #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); |
| |
| /* 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_inb_pwrite_handler(union rio_pw_msg *pw_msg); |
| |
| /* 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 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); |
| #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 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); |
| |
| #endif /* LINUX_RIO_DRV_H */ |