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 #define RIO_PW_MSG_SIZE 64
69 extern struct bus_type rio_bus_type
;
70 extern struct device rio_bus
;
71 extern struct list_head rio_devices
; /* list of all devices */
77 * struct rio_dev - RIO device info
78 * @global_list: Node in list of all RIO devices
79 * @net_list: Node in list of RIO devices in a network
80 * @net: Network this device is a part of
83 * @device_rev: Device revision
84 * @asm_did: Assembly device ID
85 * @asm_vid: Assembly vendor ID
86 * @asm_rev: Assembly revision
87 * @efptr: Extended feature pointer
88 * @pef: Processing element features
89 * @swpinfo: Switch port info
90 * @src_ops: Source operation capabilities
91 * @dst_ops: Destination operation capabilities
92 * @comp_tag: RIO component tag
93 * @phys_efptr: RIO device extended features pointer
94 * @em_efptr: RIO Error Management features pointer
95 * @dma_mask: Mask of bits of RIO address this device implements
96 * @rswitch: Pointer to &struct rio_switch if valid for this device
97 * @driver: Driver claiming this device
98 * @dev: Device model device
99 * @riores: RIO resources this device owns
100 * @pwcback: port-write callback function for this device
101 * @destid: Network destination ID
102 * @prev: Previous RIO device connected to the current one
105 struct list_head global_list
; /* node in list of all RIO devices */
106 struct list_head net_list
; /* node in per net list */
107 struct rio_net
*net
; /* RIO net this device resides in */
123 struct rio_switch
*rswitch
; /* RIO switch info */
124 struct rio_driver
*driver
; /* RIO driver claiming this device */
125 struct device dev
; /* LDM device structure */
126 struct resource riores
[RIO_MAX_DEV_RESOURCES
];
127 int (*pwcback
) (struct rio_dev
*rdev
, union rio_pw_msg
*msg
, int step
);
129 struct rio_dev
*prev
;
132 #define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
133 #define rio_dev_f(n) list_entry(n, struct rio_dev, net_list)
134 #define to_rio_dev(n) container_of(n, struct rio_dev, dev)
137 * struct rio_msg - RIO message event
138 * @res: Mailbox resource
139 * @mcback: Message event callback
142 struct resource
*res
;
143 void (*mcback
) (struct rio_mport
* mport
, void *dev_id
, int mbox
, int slot
);
147 * struct rio_dbell - RIO doorbell event
148 * @node: Node in list of doorbell events
149 * @res: Doorbell resource
150 * @dinb: Doorbell event callback
151 * @dev_id: Device specific pointer to pass on event
154 struct list_head node
;
155 struct resource
*res
;
156 void (*dinb
) (struct rio_mport
*mport
, void *dev_id
, u16 src
, u16 dst
, u16 info
);
166 * struct rio_mport - RIO master port info
167 * @dbells: List of doorbell events
168 * @node: Node in global list of master ports
169 * @nnode: Node in network list of master ports
170 * @iores: I/O mem resource that this master port interface owns
171 * @riores: RIO resources that this master port interfaces owns
172 * @inb_msg: RIO inbound message event descriptors
173 * @outb_msg: RIO outbound message event descriptors
174 * @host_deviceid: Host device ID associated with this master port
175 * @ops: configuration space functions
176 * @id: Port ID, unique among all ports
177 * @index: Port index, unique among all port interfaces of the same type
178 * @sys_size: RapidIO common transport system size
179 * @phy_type: RapidIO phy type
180 * @name: Port name string
181 * @priv: Master port private data
184 struct list_head dbells
; /* list of doorbell events */
185 struct list_head node
; /* node in global list of ports */
186 struct list_head nnode
; /* node in net list of ports */
187 struct resource iores
;
188 struct resource riores
[RIO_MAX_MPORT_RESOURCES
];
189 struct rio_msg inb_msg
[RIO_MAX_MBOX
];
190 struct rio_msg outb_msg
[RIO_MAX_MBOX
];
191 int host_deviceid
; /* Host device ID */
192 struct rio_ops
*ops
; /* maintenance transaction functions */
193 unsigned char id
; /* port ID, unique among all ports */
194 unsigned char index
; /* port index, unique among all port
195 interfaces of the same type */
196 unsigned int sys_size
; /* RapidIO common transport system size.
197 * 0 - Small size. 256 devices.
198 * 1 - Large size, 65536 devices.
200 enum rio_phy_type phy_type
; /* RapidIO phy type */
201 unsigned char name
[40];
202 void *priv
; /* Master port private data */
206 * struct rio_net - RIO network info
207 * @node: Node in global list of RIO networks
208 * @devices: List of devices in this network
209 * @mports: List of master ports accessing this network
210 * @hport: Default port for accessing this network
211 * @id: RIO network ID
214 struct list_head node
; /* node in list of networks */
215 struct list_head devices
; /* list of devices in this net */
216 struct list_head mports
; /* list of ports accessing net */
217 struct rio_mport
*hport
; /* primary port for accessing net */
218 unsigned char id
; /* RIO network ID */
222 * struct rio_switch - RIO switch info
223 * @node: Node in global list of switches
224 * @rdev: Associated RIO device structure
225 * @switchid: Switch ID that is unique across a network
226 * @hopcount: Hopcount to this switch
227 * @destid: Associated destid in the path
228 * @route_table: Copy of switch routing table
229 * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
230 * @add_entry: Callback for switch-specific route add function
231 * @get_entry: Callback for switch-specific route get function
232 * @clr_table: Callback for switch-specific clear route table function
233 * @set_domain: Callback for switch-specific domain setting function
234 * @get_domain: Callback for switch-specific domain get function
235 * @em_init: Callback for switch-specific error management initialization function
236 * @em_handle: Callback for switch-specific error management handler function
237 * @nextdev: Array of per-port pointers to the next attached device
240 struct list_head node
;
241 struct rio_dev
*rdev
;
247 int (*add_entry
) (struct rio_mport
* mport
, u16 destid
, u8 hopcount
,
248 u16 table
, u16 route_destid
, u8 route_port
);
249 int (*get_entry
) (struct rio_mport
* mport
, u16 destid
, u8 hopcount
,
250 u16 table
, u16 route_destid
, u8
* route_port
);
251 int (*clr_table
) (struct rio_mport
*mport
, u16 destid
, u8 hopcount
,
253 int (*set_domain
) (struct rio_mport
*mport
, u16 destid
, u8 hopcount
,
255 int (*get_domain
) (struct rio_mport
*mport
, u16 destid
, u8 hopcount
,
257 int (*em_init
) (struct rio_dev
*dev
);
258 int (*em_handle
) (struct rio_dev
*dev
, u8 swport
);
259 struct rio_dev
*nextdev
[0];
262 /* Low-level architecture-dependent routines */
265 * struct rio_ops - Low-level RIO configuration space operations
266 * @lcread: Callback to perform local (master port) read of config space.
267 * @lcwrite: Callback to perform local (master port) write of config space.
268 * @cread: Callback to perform network read of config space.
269 * @cwrite: Callback to perform network write of config space.
270 * @dsend: Callback to send a doorbell message.
271 * @pwenable: Callback to enable/disable port-write message handling.
274 int (*lcread
) (struct rio_mport
*mport
, int index
, u32 offset
, int len
,
276 int (*lcwrite
) (struct rio_mport
*mport
, int index
, u32 offset
, int len
,
278 int (*cread
) (struct rio_mport
*mport
, int index
, u16 destid
,
279 u8 hopcount
, u32 offset
, int len
, u32
*data
);
280 int (*cwrite
) (struct rio_mport
*mport
, int index
, u16 destid
,
281 u8 hopcount
, u32 offset
, int len
, u32 data
);
282 int (*dsend
) (struct rio_mport
*mport
, int index
, u16 destid
, u16 data
);
283 int (*pwenable
) (struct rio_mport
*mport
, int enable
);
286 #define RIO_RESOURCE_MEM 0x00000100
287 #define RIO_RESOURCE_DOORBELL 0x00000200
288 #define RIO_RESOURCE_MAILBOX 0x00000400
290 #define RIO_RESOURCE_CACHEABLE 0x00010000
291 #define RIO_RESOURCE_PCI 0x00020000
293 #define RIO_RESOURCE_BUSY 0x80000000
296 * struct rio_driver - RIO driver info
297 * @node: Node in list of drivers
298 * @name: RIO driver name
299 * @id_table: RIO device ids to be associated with this driver
300 * @probe: RIO device inserted
301 * @remove: RIO device removed
302 * @suspend: RIO device suspended
303 * @resume: RIO device awakened
304 * @enable_wake: RIO device enable wake event
305 * @driver: LDM driver struct
307 * Provides info on a RIO device driver for insertion/removal and
308 * power management purposes.
311 struct list_head node
;
313 const struct rio_device_id
*id_table
;
314 int (*probe
) (struct rio_dev
* dev
, const struct rio_device_id
* id
);
315 void (*remove
) (struct rio_dev
* dev
);
316 int (*suspend
) (struct rio_dev
* dev
, u32 state
);
317 int (*resume
) (struct rio_dev
* dev
);
318 int (*enable_wake
) (struct rio_dev
* dev
, u32 state
, int enable
);
319 struct device_driver driver
;
322 #define to_rio_driver(drv) container_of(drv,struct rio_driver, driver)
325 * struct rio_device_id - RIO device identifier
326 * @did: RIO device ID
327 * @vid: RIO vendor ID
328 * @asm_did: RIO assembly device ID
329 * @asm_vid: RIO assembly vendor ID
331 * Identifies a RIO device based on both the device/vendor IDs and
332 * the assembly device/vendor IDs.
334 struct rio_device_id
{
336 u16 asm_did
, asm_vid
;
340 * struct rio_switch_ops - Per-switch operations
341 * @vid: RIO vendor ID
342 * @did: RIO device ID
343 * @init_hook: Callback that performs switch device initialization
345 * Defines the operations that are necessary to initialize/control
346 * a particular RIO switch device.
348 struct rio_switch_ops
{
350 int (*init_hook
) (struct rio_dev
*rdev
, int do_enum
);
355 u32 comptag
; /* Component Tag CSR */
356 u32 errdetect
; /* Port N Error Detect CSR */
357 u32 is_port
; /* Implementation specific + PortID */
358 u32 ltlerrdet
; /* LTL Error Detect CSR */
361 u32 raw
[RIO_PW_MSG_SIZE
/sizeof(u32
)];
364 /* Architecture and hardware-specific functions */
365 extern int rio_init_mports(void);
366 extern void rio_register_mport(struct rio_mport
*);
367 extern int rio_hw_add_outb_message(struct rio_mport
*, struct rio_dev
*, int,
369 extern int rio_hw_add_inb_buffer(struct rio_mport
*, int, void *);
370 extern void *rio_hw_get_inb_message(struct rio_mport
*, int);
371 extern int rio_open_inb_mbox(struct rio_mport
*, void *, int, int);
372 extern void rio_close_inb_mbox(struct rio_mport
*, int);
373 extern int rio_open_outb_mbox(struct rio_mport
*, void *, int, int);
374 extern void rio_close_outb_mbox(struct rio_mport
*, int);
376 #endif /* LINUX_RIO_H */