summaryrefslogtreecommitdiff
path: root/include/linux/rio.h
blob: cfb66bbc0f27db46287d76c76f0440c394d30c34 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
/*
 * 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_NO_HOPCOUNT		-1
#define RIO_INVALID_DESTID	0xffff

#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) */

#define RIO_MAX_ROUTE_ENTRIES(size)	(size ? (1 << 16) : (1 << 8))
#define RIO_ANY_DESTID(size)		(size ? 0xffff : 0xff)

#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;
};

enum rio_phy_type {
	RIO_PHY_PARALLEL,
	RIO_PHY_SERIAL,
};

/**
 * 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
 * @priv: Master port private data
 */
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 int sys_size;	/* RapidIO common transport system size.
				 * 0 - Small size. 256 devices.
				 * 1 - Large size, 65536 devices.
				 */
	enum rio_phy_type phy_type;	/* RapidIO phy type */
	unsigned char name[40];
	void *priv;		/* Master port private data */
};

/**
 * 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;
	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) (struct rio_mport *mport, int index, u32 offset, int len,
			u32 *data);
	int (*lcwrite) (struct rio_mport *mport, int index, u32 offset, int len,
			u32 data);
	int (*cread) (struct rio_mport *mport, int index, u16 destid,
			u8 hopcount, u32 offset, int len, u32 *data);
	int (*cwrite) (struct rio_mport *mport, int index, u16 destid,
			u8 hopcount, u32 offset, int len, u32 data);
	int (*dsend) (struct rio_mport *mport, 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 */