[linux-block.git] / include / linux / rio.h

/*
 * RapidIO interconnect services
 * (RapidIO Interconnect Specification, http://www.rapidio.org)
 *
 * 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_H
#define LINUX_RIO_H

#ifdef __KERNEL__

#include <linux/types.h>
#include <linux/ioport.h>
#include <linux/list.h>
#include <linux/errno.h>
#include <linux/device.h>
#include <linux/rio_regs.h>

#define RIO_ANY_DESTID		0xff
#define RIO_NO_HOPCOUNT		-1

#define RIO_MAX_MPORT_RESOURCES	16
#define RIO_MAX_DEV_RESOURCES	16

#define RIO_GLOBAL_TABLE	0xff	/* Indicates access of a switch's
					   global routing table if it
					   has multiple (or per port)
					   tables */

#define RIO_INVALID_ROUTE	0xff	/* Indicates that a route table
					   entry is invalid (no route
					   exists for the device ID) */

#ifdef CONFIG_RAPIDIO_8_BIT_TRANSPORT
#define RIO_MAX_ROUTE_ENTRIES	(1 << 8)
#else
#define RIO_MAX_ROUTE_ENTRIES	(1 << 16)
#endif

#define RIO_MAX_MBOX		4
#define RIO_MAX_MSG_SIZE	0x1000

/*
 * Error values that may be returned by RIO functions.
 */
#define RIO_SUCCESSFUL			0x00
#define RIO_BAD_SIZE			0x81

/*
 * For RIO devices, the region numbers are assigned this way:
 *
 *	0	RapidIO outbound doorbells
 *      1-15	RapidIO memory regions
 *
 * For RIO master ports, the region number are assigned this way:
 *
 *	0	RapidIO inbound doorbells
 *	1	RapidIO inbound mailboxes
 *	1	RapidIO outbound mailboxes
 */
#define RIO_DOORBELL_RESOURCE	0
#define RIO_INB_MBOX_RESOURCE	1
#define RIO_OUTB_MBOX_RESOURCE	2

extern struct bus_type rio_bus_type;
extern struct list_head rio_devices;	/* list of all devices */

struct rio_mport;

/**
 * struct rio_dev - RIO device info
 * @global_list: Node in list of all RIO devices
 * @net_list: Node in list of RIO devices in a network
 * @net: Network this device is a part of
 * @did: Device ID
 * @vid: Vendor ID
 * @device_rev: Device revision
 * @asm_did: Assembly device ID
 * @asm_vid: Assembly vendor ID
 * @asm_rev: Assembly revision
 * @efptr: Extended feature pointer
 * @pef: Processing element features
 * @swpinfo: Switch port info
 * @src_ops: Source operation capabilities
 * @dst_ops: Destination operation capabilities
 * @dma_mask: Mask of bits of RIO address this device implements
 * @rswitch: Pointer to &struct rio_switch if valid for this device
 * @driver: Driver claiming this device
 * @dev: Device model device
 * @riores: RIO resources this device owns
 * @destid: Network destination ID
 */
struct rio_dev {
	struct list_head global_list;	/* node in list of all RIO devices */
	struct list_head net_list;	/* node in per net list */
	struct rio_net *net;	/* RIO net this device resides in */
	u16 did;
	u16 vid;
	u32 device_rev;
	u16 asm_did;
	u16 asm_vid;
	u16 asm_rev;
	u16 efptr;
	u32 pef;
	u32 swpinfo;		/* Only used for switches */
	u32 src_ops;
	u32 dst_ops;
	u64 dma_mask;
	struct rio_switch *rswitch;	/* RIO switch info */
	struct rio_driver *driver;	/* RIO driver claiming this device */
	struct device dev;	/* LDM device structure */
	struct resource riores[RIO_MAX_DEV_RESOURCES];
	u16 destid;
};

#define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
#define rio_dev_f(n) list_entry(n, struct rio_dev, net_list)
#define	to_rio_dev(n) container_of(n, struct rio_dev, dev)

/**
 * struct rio_msg - RIO message event
 * @res: Mailbox resource
 * @mcback: Message event callback
 */
struct rio_msg {
	struct resource *res;
	void (*mcback) (struct rio_mport * mport, void *dev_id, int mbox, int slot);
};

/**
 * struct rio_dbell - RIO doorbell event
 * @node: Node in list of doorbell events
 * @res: Doorbell resource
 * @dinb: Doorbell event callback
 * @dev_id: Device specific pointer to pass on event
 */
struct rio_dbell {
	struct list_head node;
	struct resource *res;
	void (*dinb) (struct rio_mport *mport, void *dev_id, u16 src, u16 dst, u16 info);
	void *dev_id;
};

/**
 * struct rio_mport - RIO master port info
 * @dbells: List of doorbell events
 * @node: Node in global list of master ports
 * @nnode: Node in network list of master ports
 * @iores: I/O mem resource that this master port interface owns
 * @riores: RIO resources that this master port interfaces owns
 * @inb_msg: RIO inbound message event descriptors
 * @outb_msg: RIO outbound message event descriptors
 * @host_deviceid: Host device ID associated with this master port
 * @ops: configuration space functions
 * @id: Port ID, unique among all ports
 * @index: Port index, unique among all port interfaces of the same type
 * @name: Port name string
 */
struct rio_mport {
	struct list_head dbells;	/* list of doorbell events */
	struct list_head node;	/* node in global list of ports */
	struct list_head nnode;	/* node in net list of ports */
	struct resource iores;
	struct resource riores[RIO_MAX_MPORT_RESOURCES];
	struct rio_msg inb_msg[RIO_MAX_MBOX];
	struct rio_msg outb_msg[RIO_MAX_MBOX];
	int host_deviceid;	/* Host device ID */
	struct rio_ops *ops;	/* maintenance transaction functions */
	unsigned char id;	/* port ID, unique among all ports */
	unsigned char index;	/* port index, unique among all port
				   interfaces of the same type */
	unsigned char name[40];
};

/**
 * struct rio_net - RIO network info
 * @node: Node in global list of RIO networks
 * @devices: List of devices in this network
 * @mports: List of master ports accessing this network
 * @hport: Default port for accessing this network
 * @id: RIO network ID
 */
struct rio_net {
	struct list_head node;	/* node in list of networks */
	struct list_head devices;	/* list of devices in this net */
	struct list_head mports;	/* list of ports accessing net */
	struct rio_mport *hport;	/* primary port for accessing net */
	unsigned char id;	/* RIO network ID */
};

/**
 * struct rio_switch - RIO switch info
 * @node: Node in global list of switches
 * @switchid: Switch ID that is unique across a network
 * @hopcount: Hopcount to this switch
 * @destid: Associated destid in the path
 * @route_table: Copy of switch routing table
 * @add_entry: Callback for switch-specific route add function
 * @get_entry: Callback for switch-specific route get function
 */
struct rio_switch {
	struct list_head node;
	u16 switchid;
	u16 hopcount;
	u16 destid;
	u8 route_table[RIO_MAX_ROUTE_ENTRIES];
	int (*add_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
			  u16 table, u16 route_destid, u8 route_port);
	int (*get_entry) (struct rio_mport * mport, u16 destid, u8 hopcount,
			  u16 table, u16 route_destid, u8 * route_port);
};

/* Low-level architecture-dependent routines */

/**
 * struct rio_ops - Low-level RIO configuration space operations
 * @lcread: Callback to perform local (master port) read of config space.
 * @lcwrite: Callback to perform local (master port) write of config space.
 * @cread: Callback to perform network read of config space.
 * @cwrite: Callback to perform network write of config space.
 * @dsend: Callback to send a doorbell message.
 */
struct rio_ops {
	int (*lcread) (int index, u32 offset, int len, u32 * data);
	int (*lcwrite) (int index, u32 offset, int len, u32 data);
	int (*cread) (int index, u16 destid, u8 hopcount, u32 offset, int len,
		      u32 * data);
	int (*cwrite) (int index, u16 destid, u8 hopcount, u32 offset, int len,
		       u32 data);
	int (*dsend) (int index, u16 destid, u16 data);
};

#define RIO_RESOURCE_MEM	0x00000100
#define RIO_RESOURCE_DOORBELL	0x00000200
#define RIO_RESOURCE_MAILBOX	0x00000400

#define RIO_RESOURCE_CACHEABLE	0x00010000
#define RIO_RESOURCE_PCI	0x00020000

#define RIO_RESOURCE_BUSY	0x80000000

/**
 * struct rio_driver - RIO driver info
 * @node: Node in list of drivers
 * @name: RIO driver name
 * @id_table: RIO device ids to be associated with this driver
 * @probe: RIO device inserted
 * @remove: RIO device removed
 * @suspend: RIO device suspended
 * @resume: RIO device awakened
 * @enable_wake: RIO device enable wake event
 * @driver: LDM driver struct
 *
 * Provides info on a RIO device driver for insertion/removal and
 * power management purposes.
 */
struct rio_driver {
	struct list_head node;
	char *name;
	const struct rio_device_id *id_table;
	int (*probe) (struct rio_dev * dev, const struct rio_device_id * id);
	void (*remove) (struct rio_dev * dev);
	int (*suspend) (struct rio_dev * dev, u32 state);
	int (*resume) (struct rio_dev * dev);
	int (*enable_wake) (struct rio_dev * dev, u32 state, int enable);
	struct device_driver driver;
};

#define	to_rio_driver(drv) container_of(drv,struct rio_driver, driver)

/**
 * struct rio_device_id - RIO device identifier
 * @did: RIO device ID
 * @vid: RIO vendor ID
 * @asm_did: RIO assembly device ID
 * @asm_vid: RIO assembly vendor ID
 *
 * Identifies a RIO device based on both the device/vendor IDs and
 * the assembly device/vendor IDs.
 */
struct rio_device_id {
	u16 did, vid;
	u16 asm_did, asm_vid;
};

/**
 * struct rio_route_ops - Per-switch route operations
 * @vid: RIO vendor ID
 * @did: RIO device ID
 * @add_hook: Callback that adds a route entry
 * @get_hook: Callback that gets a route entry
 *
 * Defines the operations that are necessary to manipulate the route
 * tables for a particular RIO switch device.
 */
struct rio_route_ops {
	u16 vid, did;
	int (*add_hook) (struct rio_mport * mport, u16 destid, u8 hopcount,
			 u16 table, u16 route_destid, u8 route_port);
	int (*get_hook) (struct rio_mport * mport, u16 destid, u8 hopcount,
			 u16 table, u16 route_destid, u8 * route_port);
};

/* Architecture and hardware-specific functions */
extern int rio_init_mports(void);
extern void rio_register_mport(struct rio_mport *);
extern int rio_hw_add_outb_message(struct rio_mport *, struct rio_dev *, int,
				   void *, size_t);
extern int rio_hw_add_inb_buffer(struct rio_mport *, int, void *);
extern void *rio_hw_get_inb_message(struct rio_mport *, int);
extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int);
extern void rio_close_inb_mbox(struct rio_mport *, int);
extern int rio_open_outb_mbox(struct rio_mport *, void *, int, int);
extern void rio_close_outb_mbox(struct rio_mport *, int);

#endif				/* __KERNEL__ */
#endif				/* LINUX_RIO_H */
Commit	Line	Data
70a50ebd MP	1	/*
	2	* RapidIO interconnect services
	3	* (RapidIO Interconnect Specification, http://www.rapidio.org)
	4	*
	5	* Copyright 2005 MontaVista Software, Inc.
	6	* Matt Porter <mporter@kernel.crashing.org>
	7	*
	8	* This program is free software; you can redistribute it and/or modify it
	9	* under the terms of the GNU General Public License as published by the
	10	* Free Software Foundation; either version 2 of the License, or (at your
	11	* option) any later version.
	12	*/
	13
	14	#ifndef LINUX_RIO_H
	15	#define LINUX_RIO_H
	16
	17	#ifdef __KERNEL__
	18
	19	#include <linux/types.h>
70a50ebd MP	20	#include <linux/ioport.h>
	21	#include <linux/list.h>
	22	#include <linux/errno.h>
	23	#include <linux/device.h>
	24	#include <linux/rio_regs.h>
	25
	26	#define RIO_ANY_DESTID 0xff
	27	#define RIO_NO_HOPCOUNT -1
	28
	29	#define RIO_MAX_MPORT_RESOURCES 16
	30	#define RIO_MAX_DEV_RESOURCES 16
	31
	32	#define RIO_GLOBAL_TABLE 0xff /* Indicates access of a switch's
	33	global routing table if it
	34	has multiple (or per port)
	35	tables */
	36
	37	#define RIO_INVALID_ROUTE 0xff /* Indicates that a route table
	38	entry is invalid (no route
	39	exists for the device ID) */
	40
	41	#ifdef CONFIG_RAPIDIO_8_BIT_TRANSPORT
	42	#define RIO_MAX_ROUTE_ENTRIES (1 << 8)
	43	#else
	44	#define RIO_MAX_ROUTE_ENTRIES (1 << 16)
	45	#endif
	46
	47	#define RIO_MAX_MBOX 4
	48	#define RIO_MAX_MSG_SIZE 0x1000
	49
	50	/*
	51	* Error values that may be returned by RIO functions.
	52	*/
	53	#define RIO_SUCCESSFUL 0x00
	54	#define RIO_BAD_SIZE 0x81
	55
	56	/*
	57	* For RIO devices, the region numbers are assigned this way:
	58	*
	59	* 0 RapidIO outbound doorbells
	60	* 1-15 RapidIO memory regions
	61	*
	62	* For RIO master ports, the region number are assigned this way:
	63	*
	64	* 0 RapidIO inbound doorbells
	65	* 1 RapidIO inbound mailboxes
	66	* 1 RapidIO outbound mailboxes
	67	*/
	68	#define RIO_DOORBELL_RESOURCE 0
	69	#define RIO_INB_MBOX_RESOURCE 1
	70	#define RIO_OUTB_MBOX_RESOURCE 2
	71
	72	extern struct bus_type rio_bus_type;
	73	extern struct list_head rio_devices; /* list of all devices */
	74
	75	struct rio_mport;
	76
	77	/**
	78	* struct rio_dev - RIO device info
	79	* @global_list: Node in list of all RIO devices
	80	* @net_list: Node in list of RIO devices in a network
	81	* @net: Network this device is a part of
	82	* @did: Device ID
	83	* @vid: Vendor ID
84	* @device_rev: Device revision
85	* @asm_did: Assembly device ID
86	* @asm_vid: Assembly vendor ID
87	* @asm_rev: Assembly revision
88	* @efptr: Extended feature pointer
89	* @pef: Processing element features
90	* @swpinfo: Switch port info
91	* @src_ops: Source operation capabilities
92	* @dst_ops: Destination operation capabilities
fa78cc51	93	* @dma_mask: Mask of bits of RIO address this device implements
70a50ebd MP	94	* @rswitch: Pointer to &struct rio_switch if valid for this device
	95	* @driver: Driver claiming this device
	96	* @dev: Device model device
	97	* @riores: RIO resources this device owns
	98	* @destid: Network destination ID
	99	*/
	100	struct rio_dev {
	101	struct list_head global_list; /* node in list of all RIO devices */
	102	struct list_head net_list; /* node in per net list */
	103	struct rio_net net; / RIO net this device resides in */
	104	u16 did;
	105	u16 vid;
	106	u32 device_rev;
	107	u16 asm_did;
	108	u16 asm_vid;
	109	u16 asm_rev;
	110	u16 efptr;
	111	u32 pef;
	112	u32 swpinfo; /* Only used for switches */
	113	u32 src_ops;
	114	u32 dst_ops;
fa78cc51	115	u64 dma_mask;
70a50ebd MP	116	struct rio_switch rswitch; / RIO switch info */
	117	struct rio_driver driver; / RIO driver claiming this device */
	118	struct device dev; /* LDM device structure */
	119	struct resource riores[RIO_MAX_DEV_RESOURCES];
	120	u16 destid;
	121	};
	122
	123	#define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
	124	#define rio_dev_f(n) list_entry(n, struct rio_dev, net_list)
	125	#define to_rio_dev(n) container_of(n, struct rio_dev, dev)
	126
	127	/**
	128	* struct rio_msg - RIO message event
	129	* @res: Mailbox resource
	130	* @mcback: Message event callback
	131	*/
	132	struct rio_msg {
	133	struct resource *res;
6978bbc0	134	void (mcback) (struct rio_mport mport, void *dev_id, int mbox, int slot);
70a50ebd MP	135	};
	136
	137	/**
	138	* struct rio_dbell - RIO doorbell event
	139	* @node: Node in list of doorbell events
	140	* @res: Doorbell resource
	141	* @dinb: Doorbell event callback
6978bbc0	142	* @dev_id: Device specific pointer to pass on event
70a50ebd MP	143	*/
	144	struct rio_dbell {
	145	struct list_head node;
	146	struct resource *res;
6978bbc0 MP	147	void (dinb) (struct rio_mport mport, void *dev_id, u16 src, u16 dst, u16 info);
6978bbc0 MP	148	void *dev_id;
70a50ebd MP	149	};
	150
	151	/**
	152	* struct rio_mport - RIO master port info
	153	* @dbells: List of doorbell events
	154	* @node: Node in global list of master ports
	155	* @nnode: Node in network list of master ports
	156	* @iores: I/O mem resource that this master port interface owns
	157	* @riores: RIO resources that this master port interfaces owns
	158	* @inb_msg: RIO inbound message event descriptors
	159	* @outb_msg: RIO outbound message event descriptors
	160	* @host_deviceid: Host device ID associated with this master port
	161	* @ops: configuration space functions
	162	* @id: Port ID, unique among all ports
	163	* @index: Port index, unique among all port interfaces of the same type
	164	* @name: Port name string
	165	*/
	166	struct rio_mport {
	167	struct list_head dbells; /* list of doorbell events */
	168	struct list_head node; /* node in global list of ports */
	169	struct list_head nnode; /* node in net list of ports */
	170	struct resource iores;
	171	struct resource riores[RIO_MAX_MPORT_RESOURCES];
	172	struct rio_msg inb_msg[RIO_MAX_MBOX];
	173	struct rio_msg outb_msg[RIO_MAX_MBOX];
	174	int host_deviceid; /* Host device ID */
	175	struct rio_ops ops; / maintenance transaction functions */
	176	unsigned char id; /* port ID, unique among all ports */
	177	unsigned char index; /* port index, unique among all port
	178	interfaces of the same type */
	179	unsigned char name[40];
	180	};
	181
	182	/**
	183	* struct rio_net - RIO network info
	184	* @node: Node in global list of RIO networks
	185	* @devices: List of devices in this network
	186	* @mports: List of master ports accessing this network
	187	* @hport: Default port for accessing this network
	188	* @id: RIO network ID
	189	*/
	190	struct rio_net {
	191	struct list_head node; /* node in list of networks */
	192	struct list_head devices; /* list of devices in this net */
	193	struct list_head mports; /* list of ports accessing net */
	194	struct rio_mport hport; / primary port for accessing net */
	195	unsigned char id; /* RIO network ID */
	196	};
	197
	198	/**
	199	* struct rio_switch - RIO switch info
	200	* @node: Node in global list of switches
	201	* @switchid: Switch ID that is unique across a network
	202	* @hopcount: Hopcount to this switch
	203	* @destid: Associated destid in the path
	204	* @route_table: Copy of switch routing table
	205	* @add_entry: Callback for switch-specific route add function
	206	* @get_entry: Callback for switch-specific route get function
	207	*/
	208	struct rio_switch {
	209	struct list_head node;
	210	u16 switchid;
	211	u16 hopcount;
	212	u16 destid;
213	u8 route_table[RIO_MAX_ROUTE_ENTRIES];
214	int (add_entry) (struct rio_mport mport, u16 destid, u8 hopcount,
215	u16 table, u16 route_destid, u8 route_port);
216	int (get_entry) (struct rio_mport mport, u16 destid, u8 hopcount,
217	u16 table, u16 route_destid, u8 * route_port);
218	};
219
220	/* Low-level architecture-dependent routines */
221
222	/**
223	* struct rio_ops - Low-level RIO configuration space operations
224	* @lcread: Callback to perform local (master port) read of config space.
225	* @lcwrite: Callback to perform local (master port) write of config space.
226	* @cread: Callback to perform network read of config space.
227	* @cwrite: Callback to perform network write of config space.
228	* @dsend: Callback to send a doorbell message.
229	*/
230	struct rio_ops {
231	int (lcread) (int index, u32 offset, int len, u32 data);
232	int (*lcwrite) (int index, u32 offset, int len, u32 data);
233	int (*cread) (int index, u16 destid, u8 hopcount, u32 offset, int len,
234	u32 * data);
235	int (*cwrite) (int index, u16 destid, u8 hopcount, u32 offset, int len,
236	u32 data);
237	int (*dsend) (int index, u16 destid, u16 data);
238	};
239
240	#define RIO_RESOURCE_MEM 0x00000100
241	#define RIO_RESOURCE_DOORBELL 0x00000200
242	#define RIO_RESOURCE_MAILBOX 0x00000400
243
244	#define RIO_RESOURCE_CACHEABLE 0x00010000
245	#define RIO_RESOURCE_PCI 0x00020000
246
247	#define RIO_RESOURCE_BUSY 0x80000000
248
249	/**
250	* struct rio_driver - RIO driver info
251	* @node: Node in list of drivers
252	* @name: RIO driver name
253	* @id_table: RIO device ids to be associated with this driver
254	* @probe: RIO device inserted
255	* @remove: RIO device removed
256	* @suspend: RIO device suspended
257	* @resume: RIO device awakened
258	* @enable_wake: RIO device enable wake event
259	* @driver: LDM driver struct
260	*
261	* Provides info on a RIO device driver for insertion/removal and
262	* power management purposes.
263	*/
264	struct rio_driver {
265	struct list_head node;
266	char *name;
267	const struct rio_device_id *id_table;
268	int (probe) (struct rio_dev dev, const struct rio_device_id * id);
269	void (remove) (struct rio_dev dev);
270	int (suspend) (struct rio_dev dev, u32 state);
271	int (resume) (struct rio_dev dev);
272	int (enable_wake) (struct rio_dev dev, u32 state, int enable);
273	struct device_driver driver;
274	};
275
276	#define to_rio_driver(drv) container_of(drv,struct rio_driver, driver)
277
278	/**
279	* struct rio_device_id - RIO device identifier
280	* @did: RIO device ID
281	* @vid: RIO vendor ID
282	* @asm_did: RIO assembly device ID
283	* @asm_vid: RIO assembly vendor ID
284	*
285	* Identifies a RIO device based on both the device/vendor IDs and
286	* the assembly device/vendor IDs.
287	*/
288	struct rio_device_id {
289	u16 did, vid;
290	u16 asm_did, asm_vid;
291	};
292
293	/**
294	* struct rio_route_ops - Per-switch route operations
295	* @vid: RIO vendor ID
296	* @did: RIO device ID
297	* @add_hook: Callback that adds a route entry
298	* @get_hook: Callback that gets a route entry
299	*
300	* Defines the operations that are necessary to manipulate the route
301	* tables for a particular RIO switch device.
302	*/
303	struct rio_route_ops {
304	u16 vid, did;
305	int (add_hook) (struct rio_mport mport, u16 destid, u8 hopcount,
306	u16 table, u16 route_destid, u8 route_port);
307	int (get_hook) (struct rio_mport mport, u16 destid, u8 hopcount,
308	u16 table, u16 route_destid, u8 * route_port);
309	};
310
311	/* Architecture and hardware-specific functions */
312	extern int rio_init_mports(void);
313	extern void rio_register_mport(struct rio_mport *);
314	extern int rio_hw_add_outb_message(struct rio_mport , struct rio_dev , int,
315	void *, size_t);
316	extern int rio_hw_add_inb_buffer(struct rio_mport , int, void );
317	extern void rio_hw_get_inb_message(struct rio_mport , int);
6978bbc0	318	extern int rio_open_inb_mbox(struct rio_mport , void , int, int);
70a50ebd	319	extern void rio_close_inb_mbox(struct rio_mport *, int);
6978bbc0	320	extern int rio_open_outb_mbox(struct rio_mport , void , int, int);
70a50ebd MP	321	extern void rio_close_outb_mbox(struct rio_mport *, int);
	322
	323	#endif /* __KERNEL__ */
	324	#endif /* LINUX_RIO_H */