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_MPORTS 8
28 #define RIO_MAX_MPORT_RESOURCES 16
29 #define RIO_MAX_DEV_RESOURCES 16
31 #define RIO_GLOBAL_TABLE 0xff /* Indicates access of a switch's
32 global routing table if it
33 has multiple (or per port)
36 #define RIO_INVALID_ROUTE 0xff /* Indicates that a route table
37 entry is invalid (no route
38 exists for the device ID) */
40 #define RIO_MAX_ROUTE_ENTRIES(size) (size ? (1 << 16) : (1 << 8))
41 #define RIO_ANY_DESTID(size) (size ? 0xffff : 0xff)
43 #define RIO_MAX_MBOX 4
44 #define RIO_MAX_MSG_SIZE 0x1000
47 * Error values that may be returned by RIO functions.
49 #define RIO_SUCCESSFUL 0x00
50 #define RIO_BAD_SIZE 0x81
53 * For RIO devices, the region numbers are assigned this way:
55 * 0 RapidIO outbound doorbells
56 * 1-15 RapidIO memory regions
58 * For RIO master ports, the region number are assigned this way:
60 * 0 RapidIO inbound doorbells
61 * 1 RapidIO inbound mailboxes
62 * 1 RapidIO outbound mailboxes
64 #define RIO_DOORBELL_RESOURCE 0
65 #define RIO_INB_MBOX_RESOURCE 1
66 #define RIO_OUTB_MBOX_RESOURCE 2
68 #define RIO_PW_MSG_SIZE 64
71 * A component tag value (stored in the component tag CSR) is used as device's
72 * unique identifier assigned during enumeration. Besides being used for
73 * identifying switches (which do not have device ID register), it also is used
74 * by error management notification and therefore has to be assigned
75 * to endpoints as well.
77 #define RIO_CTAG_RESRVD 0xfffe0000 /* Reserved */
78 #define RIO_CTAG_UDEVID 0x0001ffff /* Unique device identifier */
80 extern struct bus_type rio_bus_type;
81 extern struct device rio_bus;
82 extern struct list_head rio_devices; /* list of all devices */
89 * struct rio_switch - RIO switch info
90 * @node: Node in global list of switches
91 * @switchid: Switch ID that is unique across a network
92 * @route_table: Copy of switch routing table
93 * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
94 * @add_entry: Callback for switch-specific route add function
95 * @get_entry: Callback for switch-specific route get function
96 * @clr_table: Callback for switch-specific clear route table function
97 * @set_domain: Callback for switch-specific domain setting function
98 * @get_domain: Callback for switch-specific domain get function
99 * @em_init: Callback for switch-specific error management init function
100 * @em_handle: Callback for switch-specific error management handler function
101 * @sw_sysfs: Callback that initializes switch-specific sysfs attributes
102 * @nextdev: Array of per-port pointers to the next attached device
105 struct list_head node;
109 int (*add_entry) (struct rio_mport *mport, u16 destid, u8 hopcount,
110 u16 table, u16 route_destid, u8 route_port);
111 int (*get_entry) (struct rio_mport *mport, u16 destid, u8 hopcount,
112 u16 table, u16 route_destid, u8 *route_port);
113 int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount,
115 int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
117 int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
119 int (*em_init) (struct rio_dev *dev);
120 int (*em_handle) (struct rio_dev *dev, u8 swport);
121 int (*sw_sysfs) (struct rio_dev *dev, int create);
122 struct rio_dev *nextdev[0];
126 * struct rio_dev - RIO device info
127 * @global_list: Node in list of all RIO devices
128 * @net_list: Node in list of RIO devices in a network
129 * @net: Network this device is a part of
132 * @device_rev: Device revision
133 * @asm_did: Assembly device ID
134 * @asm_vid: Assembly vendor ID
135 * @asm_rev: Assembly revision
136 * @efptr: Extended feature pointer
137 * @pef: Processing element features
138 * @swpinfo: Switch port info
139 * @src_ops: Source operation capabilities
140 * @dst_ops: Destination operation capabilities
141 * @comp_tag: RIO component tag
142 * @phys_efptr: RIO device extended features pointer
143 * @em_efptr: RIO Error Management features pointer
144 * @dma_mask: Mask of bits of RIO address this device implements
145 * @driver: Driver claiming this device
146 * @dev: Device model device
147 * @riores: RIO resources this device owns
148 * @pwcback: port-write callback function for this device
149 * @destid: Network destination ID (or associated destid for switch)
150 * @hopcount: Hopcount to this device
151 * @prev: Previous RIO device connected to the current one
152 * @rswitch: struct rio_switch (if valid for this device)
155 struct list_head global_list; /* node in list of all RIO devices */
156 struct list_head net_list; /* node in per net list */
157 struct rio_net *net; /* RIO net this device resides in */
173 struct rio_driver *driver; /* RIO driver claiming this device */
174 struct device dev; /* LDM device structure */
175 struct resource riores[RIO_MAX_DEV_RESOURCES];
176 int (*pwcback) (struct rio_dev *rdev, union rio_pw_msg *msg, int step);
179 struct rio_dev *prev;
180 struct rio_switch rswitch[0]; /* RIO switch info */
183 #define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
184 #define rio_dev_f(n) list_entry(n, struct rio_dev, net_list)
185 #define to_rio_dev(n) container_of(n, struct rio_dev, dev)
186 #define sw_to_rio_dev(n) container_of(n, struct rio_dev, rswitch[0])
189 * struct rio_msg - RIO message event
190 * @res: Mailbox resource
191 * @mcback: Message event callback
194 struct resource *res;
195 void (*mcback) (struct rio_mport * mport, void *dev_id, int mbox, int slot);
199 * struct rio_dbell - RIO doorbell event
200 * @node: Node in list of doorbell events
201 * @res: Doorbell resource
202 * @dinb: Doorbell event callback
203 * @dev_id: Device specific pointer to pass on event
206 struct list_head node;
207 struct resource *res;
208 void (*dinb) (struct rio_mport *mport, void *dev_id, u16 src, u16 dst, u16 info);
218 * struct rio_mport - RIO master port info
219 * @dbells: List of doorbell events
220 * @node: Node in global list of master ports
221 * @nnode: Node in network list of master ports
222 * @iores: I/O mem resource that this master port interface owns
223 * @riores: RIO resources that this master port interfaces owns
224 * @inb_msg: RIO inbound message event descriptors
225 * @outb_msg: RIO outbound message event descriptors
226 * @host_deviceid: Host device ID associated with this master port
227 * @ops: configuration space functions
228 * @id: Port ID, unique among all ports
229 * @index: Port index, unique among all port interfaces of the same type
230 * @sys_size: RapidIO common transport system size
231 * @phy_type: RapidIO phy type
232 * @phys_efptr: RIO port extended features pointer
233 * @name: Port name string
234 * @priv: Master port private data
237 struct list_head dbells; /* list of doorbell events */
238 struct list_head node; /* node in global list of ports */
239 struct list_head nnode; /* node in net list of ports */
240 struct resource iores;
241 struct resource riores[RIO_MAX_MPORT_RESOURCES];
242 struct rio_msg inb_msg[RIO_MAX_MBOX];
243 struct rio_msg outb_msg[RIO_MAX_MBOX];
244 int host_deviceid; /* Host device ID */
245 struct rio_ops *ops; /* low-level architecture-dependent routines */
246 unsigned char id; /* port ID, unique among all ports */
247 unsigned char index; /* port index, unique among all port
248 interfaces of the same type */
249 unsigned int sys_size; /* RapidIO common transport system size.
250 * 0 - Small size. 256 devices.
251 * 1 - Large size, 65536 devices.
253 enum rio_phy_type phy_type; /* RapidIO phy type */
255 unsigned char name[40];
256 void *priv; /* Master port private data */
260 * struct rio_net - RIO network info
261 * @node: Node in global list of RIO networks
262 * @devices: List of devices in this network
263 * @mports: List of master ports accessing this network
264 * @hport: Default port for accessing this network
265 * @id: RIO network ID
268 struct list_head node; /* node in list of networks */
269 struct list_head devices; /* list of devices in this net */
270 struct list_head mports; /* list of ports accessing net */
271 struct rio_mport *hport; /* primary port for accessing net */
272 unsigned char id; /* RIO network ID */
275 /* Definitions used by switch sysfs initialization callback */
276 #define RIO_SW_SYSFS_CREATE 1 /* Create switch attributes */
277 #define RIO_SW_SYSFS_REMOVE 0 /* Remove switch attributes */
279 /* Low-level architecture-dependent routines */
282 * struct rio_ops - Low-level RIO configuration space operations
283 * @lcread: Callback to perform local (master port) read of config space.
284 * @lcwrite: Callback to perform local (master port) write of config space.
285 * @cread: Callback to perform network read of config space.
286 * @cwrite: Callback to perform network write of config space.
287 * @dsend: Callback to send a doorbell message.
288 * @pwenable: Callback to enable/disable port-write message handling.
289 * @open_outb_mbox: Callback to initialize outbound mailbox.
290 * @close_outb_mbox: Callback to shut down outbound mailbox.
291 * @open_inb_mbox: Callback to initialize inbound mailbox.
292 * @close_inb_mbox: Callback to shut down inbound mailbox.
293 * @add_outb_message: Callback to add a message to an outbound mailbox queue.
294 * @add_inb_buffer: Callback to add a buffer to an inbound mailbox queue.
295 * @get_inb_message: Callback to get a message from an inbound mailbox queue.
298 int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len,
300 int (*lcwrite) (struct rio_mport *mport, int index, u32 offset, int len,
302 int (*cread) (struct rio_mport *mport, int index, u16 destid,
303 u8 hopcount, u32 offset, int len, u32 *data);
304 int (*cwrite) (struct rio_mport *mport, int index, u16 destid,
305 u8 hopcount, u32 offset, int len, u32 data);
306 int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data);
307 int (*pwenable) (struct rio_mport *mport, int enable);
308 int (*open_outb_mbox)(struct rio_mport *mport, void *dev_id,
309 int mbox, int entries);
310 void (*close_outb_mbox)(struct rio_mport *mport, int mbox);
311 int (*open_inb_mbox)(struct rio_mport *mport, void *dev_id,
312 int mbox, int entries);
313 void (*close_inb_mbox)(struct rio_mport *mport, int mbox);
314 int (*add_outb_message)(struct rio_mport *mport, struct rio_dev *rdev,
315 int mbox, void *buffer, size_t len);
316 int (*add_inb_buffer)(struct rio_mport *mport, int mbox, void *buf);
317 void *(*get_inb_message)(struct rio_mport *mport, int mbox);
320 #define RIO_RESOURCE_MEM 0x00000100
321 #define RIO_RESOURCE_DOORBELL 0x00000200
322 #define RIO_RESOURCE_MAILBOX 0x00000400
324 #define RIO_RESOURCE_CACHEABLE 0x00010000
325 #define RIO_RESOURCE_PCI 0x00020000
327 #define RIO_RESOURCE_BUSY 0x80000000
330 * struct rio_driver - RIO driver info
331 * @node: Node in list of drivers
332 * @name: RIO driver name
333 * @id_table: RIO device ids to be associated with this driver
334 * @probe: RIO device inserted
335 * @remove: RIO device removed
336 * @suspend: RIO device suspended
337 * @resume: RIO device awakened
338 * @enable_wake: RIO device enable wake event
339 * @driver: LDM driver struct
341 * Provides info on a RIO device driver for insertion/removal and
342 * power management purposes.
345 struct list_head node;
347 const struct rio_device_id *id_table;
348 int (*probe) (struct rio_dev * dev, const struct rio_device_id * id);
349 void (*remove) (struct rio_dev * dev);
350 int (*suspend) (struct rio_dev * dev, u32 state);
351 int (*resume) (struct rio_dev * dev);
352 int (*enable_wake) (struct rio_dev * dev, u32 state, int enable);
353 struct device_driver driver;
356 #define to_rio_driver(drv) container_of(drv,struct rio_driver, driver)
359 * struct rio_device_id - RIO device identifier
360 * @did: RIO device ID
361 * @vid: RIO vendor ID
362 * @asm_did: RIO assembly device ID
363 * @asm_vid: RIO assembly vendor ID
365 * Identifies a RIO device based on both the device/vendor IDs and
366 * the assembly device/vendor IDs.
368 struct rio_device_id {
370 u16 asm_did, asm_vid;
374 * struct rio_switch_ops - Per-switch operations
375 * @vid: RIO vendor ID
376 * @did: RIO device ID
377 * @init_hook: Callback that performs switch device initialization
379 * Defines the operations that are necessary to initialize/control
380 * a particular RIO switch device.
382 struct rio_switch_ops {
384 int (*init_hook) (struct rio_dev *rdev, int do_enum);
389 u32 comptag; /* Component Tag CSR */
390 u32 errdetect; /* Port N Error Detect CSR */
391 u32 is_port; /* Implementation specific + PortID */
392 u32 ltlerrdet; /* LTL Error Detect CSR */
395 u32 raw[RIO_PW_MSG_SIZE/sizeof(u32)];
398 /* Architecture and hardware-specific functions */
399 extern int rio_register_mport(struct rio_mport *);
400 extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int);
401 extern void rio_close_inb_mbox(struct rio_mport *, int);
402 extern int rio_open_outb_mbox(struct rio_mport *, void *, int, int);
403 extern void rio_close_outb_mbox(struct rio_mport *, int);
405 #endif /* LINUX_RIO_H */