drivers/rapidio/rio.h

   1 /*
   2  * RapidIO interconnect services
   3  *
   4  * Copyright 2005 MontaVista Software, Inc.
   5  * Matt Porter <mporter@kernel.crashing.org>
   6  *
   7  * This program is free software; you can redistribute  it and/or modify it
   8  * under  the terms of  the GNU General  Public License as published by the
   9  * Free Software Foundation;  either version 2 of the  License, or (at your
  10  * option) any later version.
  11  */
  12
  13 #include <linux/device.h>
  14 #include <linux/list.h>
  15 #include <linux/rio.h>
  16
  17 #define RIO_MAX_CHK_RETRY       3
  18
  19 /* Functions internal to the RIO core code */
  20
  21 extern u32 rio_mport_get_feature(struct rio_mport *mport, int local, u16 destid,
  22                                  u8 hopcount, int ftr);
  23 extern u32 rio_mport_get_physefb(struct rio_mport *port, int local,
  24                                  u16 destid, u8 hopcount);
  25 extern u32 rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
  26                              u8 hopcount, u32 from);
  27 extern int rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid,
  28                                     u8 hopcount);
  29 extern int rio_create_sysfs_dev_files(struct rio_dev *rdev);
  30 extern int rio_enum_mport(struct rio_mport *mport);
  31 extern int rio_disc_mport(struct rio_mport *mport);
  32 extern int rio_std_route_add_entry(struct rio_mport *mport, u16 destid,
  33                                    u8 hopcount, u16 table, u16 route_destid,
  34                                    u8 route_port);
  35 extern int rio_std_route_get_entry(struct rio_mport *mport, u16 destid,
  36                                    u8 hopcount, u16 table, u16 route_destid,
  37                                    u8 *route_port);
  38 extern int rio_std_route_clr_table(struct rio_mport *mport, u16 destid,
  39                                    u8 hopcount, u16 table);
  40 extern int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock);
  41 extern struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from);
  42
  43 /* Structures internal to the RIO core code */
  44 extern struct device_attribute rio_dev_attrs[];
  45 extern spinlock_t rio_global_list_lock;
  46
  47 extern struct rio_switch_ops __start_rio_switch_ops[];
  48 extern struct rio_switch_ops __end_rio_switch_ops[];
  49
  50 /* Helpers internal to the RIO core code */
  51 #define DECLARE_RIO_SWITCH_SECTION(section, name, vid, did, init_hook) \
  52         static const struct rio_switch_ops __rio_switch_##name __used \
  53         __section(section) = { vid, did, init_hook };
  54
  55 /**
  56  * DECLARE_RIO_SWITCH_INIT - Registers switch initialization routine
  57  * @vid: RIO vendor ID
  58  * @did: RIO device ID
  59  * @init_hook: Callback that performs switch-specific initialization
  60  *
  61  * Manipulating switch route tables and error management in RIO
  62  * is switch specific. This registers a switch by vendor and device ID with
  63  * initialization callback for setting up switch operations and (if required)
  64  * hardware initialization. A &struct rio_switch_ops is initialized with
  65  * pointer to the init routine and placed into a RIO-specific kernel section.
  66  */
  67 #define DECLARE_RIO_SWITCH_INIT(vid, did, init_hook)            \
  68         DECLARE_RIO_SWITCH_SECTION(.rio_switch_ops, vid##did, \
  69                         vid, did, init_hook)
  70
  71 #define RIO_GET_DID(size, x)    (size ? (x & 0xffff) : ((x & 0x00ff0000) >> 16))
  72 #define RIO_SET_DID(size, x)    (size ? (x & 0xffff) : ((x & 0x000000ff) << 16))