2 * RapidIO interconnect services
3 * (RapidIO Interconnect Specification, http://www.rapidio.org)
5 * Copyright 2005 MontaVista Software, Inc.
6 * Matt Porter <mporter@kernel.crashing.org>
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.
17 #include <linux/types.h>
18 #include <linux/ioport.h>
19 #include <linux/list.h>
20 #include <linux/errno.h>
21 #include <linux/device.h>
22 #include <linux/rio_regs.h>
24 #define RIO_NO_HOPCOUNT -1
25 #define RIO_INVALID_DESTID 0xffff
27 #define RIO_MAX_MPORT_RESOURCES 16
28 #define RIO_MAX_DEV_RESOURCES 16
30 #define RIO_GLOBAL_TABLE 0xff /* Indicates access of a switch's
31 global routing table if it
32 has multiple (or per port)
35 #define RIO_INVALID_ROUTE 0xff /* Indicates that a route table
36 entry is invalid (no route
37 exists for the device ID) */
39 #define RIO_MAX_ROUTE_ENTRIES(size) (size ? (1 << 16) : (1 << 8))
40 #define RIO_ANY_DESTID(size) (size ? 0xffff : 0xff)
42 #define RIO_MAX_MBOX 4
43 #define RIO_MAX_MSG_SIZE 0x1000
46 * Error values that may be returned by RIO functions.
48 #define RIO_SUCCESSFUL 0x00
49 #define RIO_BAD_SIZE 0x81
52 * For RIO devices, the region numbers are assigned this way:
54 * 0 RapidIO outbound doorbells
55 * 1-15 RapidIO memory regions
57 * For RIO master ports, the region number are assigned this way:
59 * 0 RapidIO inbound doorbells
60 * 1 RapidIO inbound mailboxes
61 * 1 RapidIO outbound mailboxes
63 #define RIO_DOORBELL_RESOURCE 0
64 #define RIO_INB_MBOX_RESOURCE 1
65 #define RIO_OUTB_MBOX_RESOURCE 2
67 extern struct bus_type rio_bus_type
;
68 extern struct list_head rio_devices
; /* list of all devices */
73 * struct rio_dev - RIO device info
74 * @global_list: Node in list of all RIO devices
75 * @net_list: Node in list of RIO devices in a network
76 * @net: Network this device is a part of
79 * @device_rev: Device revision
80 * @asm_did: Assembly device ID
81 * @asm_vid: Assembly vendor ID
82 * @asm_rev: Assembly revision
83 * @efptr: Extended feature pointer
84 * @pef: Processing element features
85 * @swpinfo: Switch port info
86 * @src_ops: Source operation capabilities
87 * @dst_ops: Destination operation capabilities
88 * @dma_mask: Mask of bits of RIO address this device implements
89 * @rswitch: Pointer to &struct rio_switch if valid for this device
90 * @driver: Driver claiming this device
91 * @dev: Device model device
92 * @riores: RIO resources this device owns
93 * @destid: Network destination ID
96 struct list_head global_list
; /* node in list of all RIO devices */
97 struct list_head net_list
; /* node in per net list */
98 struct rio_net
*net
; /* RIO net this device resides in */
107 u32 swpinfo
; /* Only used for switches */
111 struct rio_switch
*rswitch
; /* RIO switch info */
112 struct rio_driver
*driver
; /* RIO driver claiming this device */
113 struct device dev
; /* LDM device structure */
114 struct resource riores
[RIO_MAX_DEV_RESOURCES
];
118 #define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
119 #define rio_dev_f(n) list_entry(n, struct rio_dev, net_list)
120 #define to_rio_dev(n) container_of(n, struct rio_dev, dev)
123 * struct rio_msg - RIO message event
124 * @res: Mailbox resource
125 * @mcback: Message event callback
128 struct resource
*res
;
129 void (*mcback
) (struct rio_mport
* mport
, void *dev_id
, int mbox
, int slot
);
133 * struct rio_dbell - RIO doorbell event
134 * @node: Node in list of doorbell events
135 * @res: Doorbell resource
136 * @dinb: Doorbell event callback
137 * @dev_id: Device specific pointer to pass on event
140 struct list_head node
;
141 struct resource
*res
;
142 void (*dinb
) (struct rio_mport
*mport
, void *dev_id
, u16 src
, u16 dst
, u16 info
);
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 * @priv: Master port private data
168 struct list_head dbells
; /* list of doorbell events */
169 struct list_head node
; /* node in global list of ports */
170 struct list_head nnode
; /* node in net list of ports */
171 struct resource iores
;
172 struct resource riores
[RIO_MAX_MPORT_RESOURCES
];
173 struct rio_msg inb_msg
[RIO_MAX_MBOX
];
174 struct rio_msg outb_msg
[RIO_MAX_MBOX
];
175 int host_deviceid
; /* Host device ID */
176 struct rio_ops
*ops
; /* maintenance transaction functions */
177 unsigned char id
; /* port ID, unique among all ports */
178 unsigned char index
; /* port index, unique among all port
179 interfaces of the same type */
180 unsigned int sys_size
; /* RapidIO common transport system size.
181 * 0 - Small size. 256 devices.
182 * 1 - Large size, 65536 devices.
184 enum rio_phy_type phy_type
; /* RapidIO phy type */
185 unsigned char name
[40];
186 void *priv
; /* Master port private data */
190 * struct rio_net - RIO network info
191 * @node: Node in global list of RIO networks
192 * @devices: List of devices in this network
193 * @mports: List of master ports accessing this network
194 * @hport: Default port for accessing this network
195 * @id: RIO network ID
198 struct list_head node
; /* node in list of networks */
199 struct list_head devices
; /* list of devices in this net */
200 struct list_head mports
; /* list of ports accessing net */
201 struct rio_mport
*hport
; /* primary port for accessing net */
202 unsigned char id
; /* RIO network ID */
206 * struct rio_switch - RIO switch info
207 * @node: Node in global list of switches
208 * @switchid: Switch ID that is unique across a network
209 * @hopcount: Hopcount to this switch
210 * @destid: Associated destid in the path
211 * @route_table: Copy of switch routing table
212 * @add_entry: Callback for switch-specific route add function
213 * @get_entry: Callback for switch-specific route get function
216 struct list_head node
;
221 int (*add_entry
) (struct rio_mport
* mport
, u16 destid
, u8 hopcount
,
222 u16 table
, u16 route_destid
, u8 route_port
);
223 int (*get_entry
) (struct rio_mport
* mport
, u16 destid
, u8 hopcount
,
224 u16 table
, u16 route_destid
, u8
* route_port
);
227 /* Low-level architecture-dependent routines */
230 * struct rio_ops - Low-level RIO configuration space operations
231 * @lcread: Callback to perform local (master port) read of config space.
232 * @lcwrite: Callback to perform local (master port) write of config space.
233 * @cread: Callback to perform network read of config space.
234 * @cwrite: Callback to perform network write of config space.
235 * @dsend: Callback to send a doorbell message.
238 int (*lcread
) (struct rio_mport
*mport
, int index
, u32 offset
, int len
,
240 int (*lcwrite
) (struct rio_mport
*mport
, int index
, u32 offset
, int len
,
242 int (*cread
) (struct rio_mport
*mport
, int index
, u16 destid
,
243 u8 hopcount
, u32 offset
, int len
, u32
*data
);
244 int (*cwrite
) (struct rio_mport
*mport
, int index
, u16 destid
,
245 u8 hopcount
, u32 offset
, int len
, u32 data
);
246 int (*dsend
) (struct rio_mport
*mport
, int index
, u16 destid
, u16 data
);
249 #define RIO_RESOURCE_MEM 0x00000100
250 #define RIO_RESOURCE_DOORBELL 0x00000200
251 #define RIO_RESOURCE_MAILBOX 0x00000400
253 #define RIO_RESOURCE_CACHEABLE 0x00010000
254 #define RIO_RESOURCE_PCI 0x00020000
256 #define RIO_RESOURCE_BUSY 0x80000000
259 * struct rio_driver - RIO driver info
260 * @node: Node in list of drivers
261 * @name: RIO driver name
262 * @id_table: RIO device ids to be associated with this driver
263 * @probe: RIO device inserted
264 * @remove: RIO device removed
265 * @suspend: RIO device suspended
266 * @resume: RIO device awakened
267 * @enable_wake: RIO device enable wake event
268 * @driver: LDM driver struct
270 * Provides info on a RIO device driver for insertion/removal and
271 * power management purposes.
274 struct list_head node
;
276 const struct rio_device_id
*id_table
;
277 int (*probe
) (struct rio_dev
* dev
, const struct rio_device_id
* id
);
278 void (*remove
) (struct rio_dev
* dev
);
279 int (*suspend
) (struct rio_dev
* dev
, u32 state
);
280 int (*resume
) (struct rio_dev
* dev
);
281 int (*enable_wake
) (struct rio_dev
* dev
, u32 state
, int enable
);
282 struct device_driver driver
;
285 #define to_rio_driver(drv) container_of(drv,struct rio_driver, driver)
288 * struct rio_device_id - RIO device identifier
289 * @did: RIO device ID
290 * @vid: RIO vendor ID
291 * @asm_did: RIO assembly device ID
292 * @asm_vid: RIO assembly vendor ID
294 * Identifies a RIO device based on both the device/vendor IDs and
295 * the assembly device/vendor IDs.
297 struct rio_device_id
{
299 u16 asm_did
, asm_vid
;
303 * struct rio_route_ops - Per-switch route operations
304 * @vid: RIO vendor ID
305 * @did: RIO device ID
306 * @add_hook: Callback that adds a route entry
307 * @get_hook: Callback that gets a route entry
309 * Defines the operations that are necessary to manipulate the route
310 * tables for a particular RIO switch device.
312 struct rio_route_ops
{
314 int (*add_hook
) (struct rio_mport
* mport
, u16 destid
, u8 hopcount
,
315 u16 table
, u16 route_destid
, u8 route_port
);
316 int (*get_hook
) (struct rio_mport
* mport
, u16 destid
, u8 hopcount
,
317 u16 table
, u16 route_destid
, u8
* route_port
);
320 /* Architecture and hardware-specific functions */
321 extern int rio_init_mports(void);
322 extern void rio_register_mport(struct rio_mport
*);
323 extern int rio_hw_add_outb_message(struct rio_mport
*, struct rio_dev
*, int,
325 extern int rio_hw_add_inb_buffer(struct rio_mport
*, int, void *);
326 extern void *rio_hw_get_inb_message(struct rio_mport
*, int);
327 extern int rio_open_inb_mbox(struct rio_mport
*, void *, int, int);
328 extern void rio_close_inb_mbox(struct rio_mport
*, int);
329 extern int rio_open_outb_mbox(struct rio_mport
*, void *, int, int);
330 extern void rio_close_outb_mbox(struct rio_mport
*, int);
332 #endif /* LINUX_RIO_H */
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