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Matt Porter70a50eb2005-11-07 01:00:16 -08001/*
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
Matt Porter70a50eb2005-11-07 01:00:16 -080017#include <linux/types.h>
Matt Porter70a50eb2005-11-07 01:00:16 -080018#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>
Alexandre Bouninee42d98e2012-05-31 16:26:38 -070023#ifdef CONFIG_RAPIDIO_DMA_ENGINE
24#include <linux/dmaengine.h>
25#endif
Matt Porter70a50eb2005-11-07 01:00:16 -080026
Matt Porter70a50eb2005-11-07 01:00:16 -080027#define RIO_NO_HOPCOUNT -1
Alexandre Bouninec70555b2007-02-10 01:46:47 -080028#define RIO_INVALID_DESTID 0xffff
Matt Porter70a50eb2005-11-07 01:00:16 -080029
Alexandre Bounine569fccb2011-03-23 16:43:05 -070030#define RIO_MAX_MPORTS 8
Matt Porter70a50eb2005-11-07 01:00:16 -080031#define RIO_MAX_MPORT_RESOURCES 16
32#define RIO_MAX_DEV_RESOURCES 16
Alexandre Bounineed43f442012-10-04 17:15:51 -070033#define RIO_MAX_MPORT_NAME 40
Matt Porter70a50eb2005-11-07 01:00:16 -080034
35#define RIO_GLOBAL_TABLE 0xff /* Indicates access of a switch's
36 global routing table if it
37 has multiple (or per port)
38 tables */
39
40#define RIO_INVALID_ROUTE 0xff /* Indicates that a route table
41 entry is invalid (no route
42 exists for the device ID) */
43
Zhang Weie0423232008-04-18 13:33:42 -070044#define RIO_MAX_ROUTE_ENTRIES(size) (size ? (1 << 16) : (1 << 8))
45#define RIO_ANY_DESTID(size) (size ? 0xffff : 0xff)
Matt Porter70a50eb2005-11-07 01:00:16 -080046
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
Chad Reesefdb8d562012-10-10 15:54:05 -070066 * 2 RapidIO outbound mailboxes
Matt Porter70a50eb2005-11-07 01:00:16 -080067 */
68#define RIO_DOORBELL_RESOURCE 0
69#define RIO_INB_MBOX_RESOURCE 1
70#define RIO_OUTB_MBOX_RESOURCE 2
71
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -070072#define RIO_PW_MSG_SIZE 64
73
Alexandre Bouninee6536922011-01-12 17:00:40 -080074/*
75 * A component tag value (stored in the component tag CSR) is used as device's
76 * unique identifier assigned during enumeration. Besides being used for
77 * identifying switches (which do not have device ID register), it also is used
78 * by error management notification and therefore has to be assigned
79 * to endpoints as well.
80 */
81#define RIO_CTAG_RESRVD 0xfffe0000 /* Reserved */
82#define RIO_CTAG_UDEVID 0x0001ffff /* Unique device identifier */
83
Matt Porter70a50eb2005-11-07 01:00:16 -080084extern struct bus_type rio_bus_type;
Alexandre Bounine2c70f022010-10-27 15:34:26 -070085extern struct device rio_bus;
Matt Porter70a50eb2005-11-07 01:00:16 -080086extern struct list_head rio_devices; /* list of all devices */
87
88struct rio_mport;
Alexandre Bounineded05782011-01-12 17:00:39 -080089struct rio_dev;
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -070090union rio_pw_msg;
Matt Porter70a50eb2005-11-07 01:00:16 -080091
92/**
Alexandre Bounineded05782011-01-12 17:00:39 -080093 * struct rio_switch - RIO switch info
94 * @node: Node in global list of switches
95 * @switchid: Switch ID that is unique across a network
96 * @route_table: Copy of switch routing table
97 * @port_ok: Status of each port (one bit per port) - OK=1 or UNINIT=0
98 * @add_entry: Callback for switch-specific route add function
99 * @get_entry: Callback for switch-specific route get function
100 * @clr_table: Callback for switch-specific clear route table function
101 * @set_domain: Callback for switch-specific domain setting function
102 * @get_domain: Callback for switch-specific domain get function
103 * @em_init: Callback for switch-specific error management init function
104 * @em_handle: Callback for switch-specific error management handler function
105 * @sw_sysfs: Callback that initializes switch-specific sysfs attributes
106 * @nextdev: Array of per-port pointers to the next attached device
107 */
108struct rio_switch {
109 struct list_head node;
110 u16 switchid;
111 u8 *route_table;
112 u32 port_ok;
113 int (*add_entry) (struct rio_mport *mport, u16 destid, u8 hopcount,
114 u16 table, u16 route_destid, u8 route_port);
115 int (*get_entry) (struct rio_mport *mport, u16 destid, u8 hopcount,
116 u16 table, u16 route_destid, u8 *route_port);
117 int (*clr_table) (struct rio_mport *mport, u16 destid, u8 hopcount,
118 u16 table);
119 int (*set_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
120 u8 sw_domain);
121 int (*get_domain) (struct rio_mport *mport, u16 destid, u8 hopcount,
122 u8 *sw_domain);
123 int (*em_init) (struct rio_dev *dev);
124 int (*em_handle) (struct rio_dev *dev, u8 swport);
125 int (*sw_sysfs) (struct rio_dev *dev, int create);
126 struct rio_dev *nextdev[0];
127};
128
129/**
Matt Porter70a50eb2005-11-07 01:00:16 -0800130 * struct rio_dev - RIO device info
131 * @global_list: Node in list of all RIO devices
132 * @net_list: Node in list of RIO devices in a network
133 * @net: Network this device is a part of
134 * @did: Device ID
135 * @vid: Vendor ID
136 * @device_rev: Device revision
137 * @asm_did: Assembly device ID
138 * @asm_vid: Assembly vendor ID
139 * @asm_rev: Assembly revision
140 * @efptr: Extended feature pointer
141 * @pef: Processing element features
142 * @swpinfo: Switch port info
143 * @src_ops: Source operation capabilities
144 * @dst_ops: Destination operation capabilities
Randy Dunlap97ef6f72010-05-28 15:08:08 -0700145 * @comp_tag: RIO component tag
146 * @phys_efptr: RIO device extended features pointer
147 * @em_efptr: RIO Error Management features pointer
Matt Porterfa78cc52005-11-07 01:00:18 -0800148 * @dma_mask: Mask of bits of RIO address this device implements
Matt Porter70a50eb2005-11-07 01:00:16 -0800149 * @driver: Driver claiming this device
150 * @dev: Device model device
151 * @riores: RIO resources this device owns
Randy Dunlap97ef6f72010-05-28 15:08:08 -0700152 * @pwcback: port-write callback function for this device
Alexandre Bouninea93192a2011-01-12 17:00:38 -0800153 * @destid: Network destination ID (or associated destid for switch)
154 * @hopcount: Hopcount to this device
Alexandre Bounine68fe4df2010-10-27 15:34:29 -0700155 * @prev: Previous RIO device connected to the current one
Alexandre Bounineded05782011-01-12 17:00:39 -0800156 * @rswitch: struct rio_switch (if valid for this device)
Matt Porter70a50eb2005-11-07 01:00:16 -0800157 */
158struct rio_dev {
159 struct list_head global_list; /* node in list of all RIO devices */
160 struct list_head net_list; /* node in per net list */
161 struct rio_net *net; /* RIO net this device resides in */
162 u16 did;
163 u16 vid;
164 u32 device_rev;
165 u16 asm_did;
166 u16 asm_vid;
167 u16 asm_rev;
168 u16 efptr;
169 u32 pef;
Alexandre Bounineae05cbd2010-10-27 15:34:29 -0700170 u32 swpinfo;
Matt Porter70a50eb2005-11-07 01:00:16 -0800171 u32 src_ops;
172 u32 dst_ops;
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700173 u32 comp_tag;
174 u32 phys_efptr;
175 u32 em_efptr;
Matt Porterfa78cc52005-11-07 01:00:18 -0800176 u64 dma_mask;
Matt Porter70a50eb2005-11-07 01:00:16 -0800177 struct rio_driver *driver; /* RIO driver claiming this device */
178 struct device dev; /* LDM device structure */
179 struct resource riores[RIO_MAX_DEV_RESOURCES];
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700180 int (*pwcback) (struct rio_dev *rdev, union rio_pw_msg *msg, int step);
Matt Porter70a50eb2005-11-07 01:00:16 -0800181 u16 destid;
Alexandre Bouninea93192a2011-01-12 17:00:38 -0800182 u8 hopcount;
Alexandre Bounine68fe4df2010-10-27 15:34:29 -0700183 struct rio_dev *prev;
Alexandre Bounineded05782011-01-12 17:00:39 -0800184 struct rio_switch rswitch[0]; /* RIO switch info */
Matt Porter70a50eb2005-11-07 01:00:16 -0800185};
186
187#define rio_dev_g(n) list_entry(n, struct rio_dev, global_list)
188#define rio_dev_f(n) list_entry(n, struct rio_dev, net_list)
189#define to_rio_dev(n) container_of(n, struct rio_dev, dev)
Alexandre Bounineded05782011-01-12 17:00:39 -0800190#define sw_to_rio_dev(n) container_of(n, struct rio_dev, rswitch[0])
Matt Porter70a50eb2005-11-07 01:00:16 -0800191
192/**
193 * struct rio_msg - RIO message event
194 * @res: Mailbox resource
195 * @mcback: Message event callback
196 */
197struct rio_msg {
198 struct resource *res;
Matt Porter6978bbc2005-11-07 01:00:20 -0800199 void (*mcback) (struct rio_mport * mport, void *dev_id, int mbox, int slot);
Matt Porter70a50eb2005-11-07 01:00:16 -0800200};
201
202/**
203 * struct rio_dbell - RIO doorbell event
204 * @node: Node in list of doorbell events
205 * @res: Doorbell resource
206 * @dinb: Doorbell event callback
Matt Porter6978bbc2005-11-07 01:00:20 -0800207 * @dev_id: Device specific pointer to pass on event
Matt Porter70a50eb2005-11-07 01:00:16 -0800208 */
209struct rio_dbell {
210 struct list_head node;
211 struct resource *res;
Matt Porter6978bbc2005-11-07 01:00:20 -0800212 void (*dinb) (struct rio_mport *mport, void *dev_id, u16 src, u16 dst, u16 info);
213 void *dev_id;
Matt Porter70a50eb2005-11-07 01:00:16 -0800214};
215
Zhang Wei61b26912008-04-18 13:33:44 -0700216enum rio_phy_type {
217 RIO_PHY_PARALLEL,
218 RIO_PHY_SERIAL,
219};
220
Matt Porter70a50eb2005-11-07 01:00:16 -0800221/**
222 * struct rio_mport - RIO master port info
223 * @dbells: List of doorbell events
224 * @node: Node in global list of master ports
225 * @nnode: Node in network list of master ports
226 * @iores: I/O mem resource that this master port interface owns
227 * @riores: RIO resources that this master port interfaces owns
228 * @inb_msg: RIO inbound message event descriptors
229 * @outb_msg: RIO outbound message event descriptors
230 * @host_deviceid: Host device ID associated with this master port
231 * @ops: configuration space functions
232 * @id: Port ID, unique among all ports
233 * @index: Port index, unique among all port interfaces of the same type
Randy Dunlap9941d942008-04-30 16:45:58 -0700234 * @sys_size: RapidIO common transport system size
235 * @phy_type: RapidIO phy type
Alexandre Bounineaf84ca32010-10-27 15:34:34 -0700236 * @phys_efptr: RIO port extended features pointer
Matt Porter70a50eb2005-11-07 01:00:16 -0800237 * @name: Port name string
Zhang Weiad1e9382008-04-18 13:33:41 -0700238 * @priv: Master port private data
Alexandre Bouninefe50c922012-10-04 17:15:52 -0700239 * @dma: DMA device associated with mport
Matt Porter70a50eb2005-11-07 01:00:16 -0800240 */
241struct rio_mport {
242 struct list_head dbells; /* list of doorbell events */
243 struct list_head node; /* node in global list of ports */
244 struct list_head nnode; /* node in net list of ports */
245 struct resource iores;
246 struct resource riores[RIO_MAX_MPORT_RESOURCES];
247 struct rio_msg inb_msg[RIO_MAX_MBOX];
248 struct rio_msg outb_msg[RIO_MAX_MBOX];
249 int host_deviceid; /* Host device ID */
Alexandre Bouninef8f06262011-03-23 16:43:02 -0700250 struct rio_ops *ops; /* low-level architecture-dependent routines */
Matt Porter70a50eb2005-11-07 01:00:16 -0800251 unsigned char id; /* port ID, unique among all ports */
252 unsigned char index; /* port index, unique among all port
253 interfaces of the same type */
Zhang Weie0423232008-04-18 13:33:42 -0700254 unsigned int sys_size; /* RapidIO common transport system size.
255 * 0 - Small size. 256 devices.
256 * 1 - Large size, 65536 devices.
257 */
Zhang Wei61b26912008-04-18 13:33:44 -0700258 enum rio_phy_type phy_type; /* RapidIO phy type */
Alexandre Bounineaf84ca32010-10-27 15:34:34 -0700259 u32 phys_efptr;
Alexandre Bounineed43f442012-10-04 17:15:51 -0700260 unsigned char name[RIO_MAX_MPORT_NAME];
Zhang Weiad1e9382008-04-18 13:33:41 -0700261 void *priv; /* Master port private data */
Alexandre Bouninee42d98e2012-05-31 16:26:38 -0700262#ifdef CONFIG_RAPIDIO_DMA_ENGINE
263 struct dma_device dma;
264#endif
Matt Porter70a50eb2005-11-07 01:00:16 -0800265};
266
Alexandre Bouninede74e002012-10-04 17:16:13 -0700267struct rio_id_table {
268 u16 start; /* logical minimal id */
Alexandre Bouninede74e002012-10-04 17:16:13 -0700269 u32 max; /* max number of IDs in table */
270 spinlock_t lock;
271 unsigned long *table;
272};
273
Matt Porter70a50eb2005-11-07 01:00:16 -0800274/**
275 * struct rio_net - RIO network info
276 * @node: Node in global list of RIO networks
277 * @devices: List of devices in this network
Randy Dunlap2ca3cb52012-11-16 14:14:56 -0800278 * @switches: List of switches in this netowrk
Matt Porter70a50eb2005-11-07 01:00:16 -0800279 * @mports: List of master ports accessing this network
280 * @hport: Default port for accessing this network
281 * @id: RIO network ID
Randy Dunlap2ca3cb52012-11-16 14:14:56 -0800282 * @destid_table: destID allocation table
Matt Porter70a50eb2005-11-07 01:00:16 -0800283 */
284struct rio_net {
285 struct list_head node; /* node in list of networks */
286 struct list_head devices; /* list of devices in this net */
Alexandre Bouninea7071ef2012-10-04 17:16:05 -0700287 struct list_head switches; /* list of switches in this net */
Matt Porter70a50eb2005-11-07 01:00:16 -0800288 struct list_head mports; /* list of ports accessing net */
289 struct rio_mport *hport; /* primary port for accessing net */
290 unsigned char id; /* RIO network ID */
Alexandre Bouninede74e002012-10-04 17:16:13 -0700291 struct rio_id_table destid_table; /* destID allocation table */
Matt Porter70a50eb2005-11-07 01:00:16 -0800292};
293
Alexandre Bounineac38d722010-10-27 15:34:31 -0700294/* Definitions used by switch sysfs initialization callback */
295#define RIO_SW_SYSFS_CREATE 1 /* Create switch attributes */
296#define RIO_SW_SYSFS_REMOVE 0 /* Remove switch attributes */
297
Matt Porter70a50eb2005-11-07 01:00:16 -0800298/* Low-level architecture-dependent routines */
299
300/**
301 * struct rio_ops - Low-level RIO configuration space operations
302 * @lcread: Callback to perform local (master port) read of config space.
303 * @lcwrite: Callback to perform local (master port) write of config space.
304 * @cread: Callback to perform network read of config space.
305 * @cwrite: Callback to perform network write of config space.
306 * @dsend: Callback to send a doorbell message.
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700307 * @pwenable: Callback to enable/disable port-write message handling.
Alexandre Bouninef8f06262011-03-23 16:43:02 -0700308 * @open_outb_mbox: Callback to initialize outbound mailbox.
309 * @close_outb_mbox: Callback to shut down outbound mailbox.
310 * @open_inb_mbox: Callback to initialize inbound mailbox.
311 * @close_inb_mbox: Callback to shut down inbound mailbox.
312 * @add_outb_message: Callback to add a message to an outbound mailbox queue.
313 * @add_inb_buffer: Callback to add a buffer to an inbound mailbox queue.
314 * @get_inb_message: Callback to get a message from an inbound mailbox queue.
Alexandre Bounineda1589f2012-10-04 17:15:57 -0700315 * @map_inb: Callback to map RapidIO address region into local memory space.
316 * @unmap_inb: Callback to unmap RapidIO address region mapped with map_inb().
Matt Porter70a50eb2005-11-07 01:00:16 -0800317 */
318struct rio_ops {
Zhang Weiad1e9382008-04-18 13:33:41 -0700319 int (*lcread) (struct rio_mport *mport, int index, u32 offset, int len,
320 u32 *data);
321 int (*lcwrite) (struct rio_mport *mport, int index, u32 offset, int len,
322 u32 data);
323 int (*cread) (struct rio_mport *mport, int index, u16 destid,
324 u8 hopcount, u32 offset, int len, u32 *data);
325 int (*cwrite) (struct rio_mport *mport, int index, u16 destid,
326 u8 hopcount, u32 offset, int len, u32 data);
327 int (*dsend) (struct rio_mport *mport, int index, u16 destid, u16 data);
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700328 int (*pwenable) (struct rio_mport *mport, int enable);
Alexandre Bouninef8f06262011-03-23 16:43:02 -0700329 int (*open_outb_mbox)(struct rio_mport *mport, void *dev_id,
330 int mbox, int entries);
331 void (*close_outb_mbox)(struct rio_mport *mport, int mbox);
332 int (*open_inb_mbox)(struct rio_mport *mport, void *dev_id,
333 int mbox, int entries);
334 void (*close_inb_mbox)(struct rio_mport *mport, int mbox);
335 int (*add_outb_message)(struct rio_mport *mport, struct rio_dev *rdev,
336 int mbox, void *buffer, size_t len);
337 int (*add_inb_buffer)(struct rio_mport *mport, int mbox, void *buf);
338 void *(*get_inb_message)(struct rio_mport *mport, int mbox);
Alexandre Bounineda1589f2012-10-04 17:15:57 -0700339 int (*map_inb)(struct rio_mport *mport, dma_addr_t lstart,
340 u64 rstart, u32 size, u32 flags);
341 void (*unmap_inb)(struct rio_mport *mport, dma_addr_t lstart);
Matt Porter70a50eb2005-11-07 01:00:16 -0800342};
343
344#define RIO_RESOURCE_MEM 0x00000100
345#define RIO_RESOURCE_DOORBELL 0x00000200
346#define RIO_RESOURCE_MAILBOX 0x00000400
347
348#define RIO_RESOURCE_CACHEABLE 0x00010000
349#define RIO_RESOURCE_PCI 0x00020000
350
351#define RIO_RESOURCE_BUSY 0x80000000
352
353/**
354 * struct rio_driver - RIO driver info
355 * @node: Node in list of drivers
356 * @name: RIO driver name
357 * @id_table: RIO device ids to be associated with this driver
358 * @probe: RIO device inserted
359 * @remove: RIO device removed
360 * @suspend: RIO device suspended
361 * @resume: RIO device awakened
362 * @enable_wake: RIO device enable wake event
363 * @driver: LDM driver struct
364 *
365 * Provides info on a RIO device driver for insertion/removal and
366 * power management purposes.
367 */
368struct rio_driver {
369 struct list_head node;
370 char *name;
371 const struct rio_device_id *id_table;
372 int (*probe) (struct rio_dev * dev, const struct rio_device_id * id);
373 void (*remove) (struct rio_dev * dev);
374 int (*suspend) (struct rio_dev * dev, u32 state);
375 int (*resume) (struct rio_dev * dev);
376 int (*enable_wake) (struct rio_dev * dev, u32 state, int enable);
377 struct device_driver driver;
378};
379
380#define to_rio_driver(drv) container_of(drv,struct rio_driver, driver)
381
382/**
383 * struct rio_device_id - RIO device identifier
384 * @did: RIO device ID
385 * @vid: RIO vendor ID
386 * @asm_did: RIO assembly device ID
387 * @asm_vid: RIO assembly vendor ID
388 *
389 * Identifies a RIO device based on both the device/vendor IDs and
390 * the assembly device/vendor IDs.
391 */
392struct rio_device_id {
393 u16 did, vid;
394 u16 asm_did, asm_vid;
395};
396
397/**
Alexandre Bounine058f88d62010-05-26 14:44:03 -0700398 * struct rio_switch_ops - Per-switch operations
Matt Porter70a50eb2005-11-07 01:00:16 -0800399 * @vid: RIO vendor ID
400 * @did: RIO device ID
Alexandre Bounine058f88d62010-05-26 14:44:03 -0700401 * @init_hook: Callback that performs switch device initialization
Matt Porter70a50eb2005-11-07 01:00:16 -0800402 *
Alexandre Bounine058f88d62010-05-26 14:44:03 -0700403 * Defines the operations that are necessary to initialize/control
404 * a particular RIO switch device.
Matt Porter70a50eb2005-11-07 01:00:16 -0800405 */
Alexandre Bounine058f88d62010-05-26 14:44:03 -0700406struct rio_switch_ops {
Matt Porter70a50eb2005-11-07 01:00:16 -0800407 u16 vid, did;
Alexandre Bounine058f88d62010-05-26 14:44:03 -0700408 int (*init_hook) (struct rio_dev *rdev, int do_enum);
Alexandre Bouninee5cabeb2010-05-26 14:43:59 -0700409};
410
411union rio_pw_msg {
412 struct {
413 u32 comptag; /* Component Tag CSR */
414 u32 errdetect; /* Port N Error Detect CSR */
415 u32 is_port; /* Implementation specific + PortID */
416 u32 ltlerrdet; /* LTL Error Detect CSR */
417 u32 padding[12];
418 } em;
419 u32 raw[RIO_PW_MSG_SIZE/sizeof(u32)];
420};
421
Alexandre Bouninee42d98e2012-05-31 16:26:38 -0700422#ifdef CONFIG_RAPIDIO_DMA_ENGINE
423
Alexandre Bouninefe50c922012-10-04 17:15:52 -0700424/*
Alexandre Bouninee42d98e2012-05-31 16:26:38 -0700425 * enum rio_write_type - RIO write transaction types used in DMA transfers
426 *
427 * Note: RapidIO specification defines write (NWRITE) and
428 * write-with-response (NWRITE_R) data transfer operations.
429 * Existing DMA controllers that service RapidIO may use one of these operations
430 * for entire data transfer or their combination with only the last data packet
431 * requires response.
432 */
433enum rio_write_type {
434 RDW_DEFAULT, /* default method used by DMA driver */
435 RDW_ALL_NWRITE, /* all packets use NWRITE */
436 RDW_ALL_NWRITE_R, /* all packets use NWRITE_R */
437 RDW_LAST_NWRITE_R, /* last packet uses NWRITE_R, others - NWRITE */
438};
439
440struct rio_dma_ext {
441 u16 destid;
442 u64 rio_addr; /* low 64-bits of 66-bit RapidIO address */
443 u8 rio_addr_u; /* upper 2-bits of 66-bit RapidIO address */
444 enum rio_write_type wr_type; /* preferred RIO write operation type */
445};
446
447struct rio_dma_data {
448 /* Local data (as scatterlist) */
449 struct scatterlist *sg; /* I/O scatter list */
450 unsigned int sg_len; /* size of scatter list */
451 /* Remote device address (flat buffer) */
452 u64 rio_addr; /* low 64-bits of 66-bit RapidIO address */
453 u8 rio_addr_u; /* upper 2-bits of 66-bit RapidIO address */
454 enum rio_write_type wr_type; /* preferred RIO write operation type */
455};
456
457static inline struct rio_mport *dma_to_mport(struct dma_device *ddev)
458{
459 return container_of(ddev, struct rio_mport, dma);
460}
461#endif /* CONFIG_RAPIDIO_DMA_ENGINE */
462
Matt Porter70a50eb2005-11-07 01:00:16 -0800463/* Architecture and hardware-specific functions */
Alexandre Bounine59f99962011-04-14 15:22:14 -0700464extern int rio_register_mport(struct rio_mport *);
Matt Porter6978bbc2005-11-07 01:00:20 -0800465extern int rio_open_inb_mbox(struct rio_mport *, void *, int, int);
Matt Porter70a50eb2005-11-07 01:00:16 -0800466extern void rio_close_inb_mbox(struct rio_mport *, int);
Matt Porter6978bbc2005-11-07 01:00:20 -0800467extern int rio_open_outb_mbox(struct rio_mport *, void *, int, int);
Matt Porter70a50eb2005-11-07 01:00:16 -0800468extern void rio_close_outb_mbox(struct rio_mport *, int);
469
Matt Porter70a50eb2005-11-07 01:00:16 -0800470#endif /* LINUX_RIO_H */