mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 23:53:55 +08:00
af84ca38af
Detects RIO link to the already enumerated device and properly sets links between device objects. Changes to the enumeration/discovery logic: 1. Use Master Enable bit to signal end of the enumeration - agents may start their discovery process as soon as they see this bit set (Component Tag register was used before for this purpose). 2. Enumerator sets Component Tag (!= 0) immediately during device setup. This allows to identify the device if the redundant route exists in a RIO system. Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com> Cc: Thomas Moll <thomas.moll@sysgo.com> Cc: Matt Porter <mporter@kernel.crashing.org> Cc: Li Yang <leoli@freescale.com> Cc: Kumar Gala <galak@kernel.crashing.org> Cc: Micha Nelissen <micha@neli.hopto.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/*
|
|
* RapidIO interconnect services
|
|
*
|
|
* Copyright 2005 MontaVista Software, Inc.
|
|
* Matt Porter <mporter@kernel.crashing.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation; either version 2 of the License, or (at your
|
|
* option) any later version.
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/list.h>
|
|
#include <linux/rio.h>
|
|
|
|
#define RIO_MAX_CHK_RETRY 3
|
|
|
|
/* Functions internal to the RIO core code */
|
|
|
|
extern u32 rio_mport_get_feature(struct rio_mport *mport, int local, u16 destid,
|
|
u8 hopcount, int ftr);
|
|
extern u32 rio_mport_get_physefb(struct rio_mport *port, int local,
|
|
u16 destid, u8 hopcount);
|
|
extern u32 rio_mport_get_efb(struct rio_mport *port, int local, u16 destid,
|
|
u8 hopcount, u32 from);
|
|
extern int rio_mport_chk_dev_access(struct rio_mport *mport, u16 destid,
|
|
u8 hopcount);
|
|
extern int rio_create_sysfs_dev_files(struct rio_dev *rdev);
|
|
extern int rio_enum_mport(struct rio_mport *mport);
|
|
extern int rio_disc_mport(struct rio_mport *mport);
|
|
extern int rio_std_route_add_entry(struct rio_mport *mport, u16 destid,
|
|
u8 hopcount, u16 table, u16 route_destid,
|
|
u8 route_port);
|
|
extern int rio_std_route_get_entry(struct rio_mport *mport, u16 destid,
|
|
u8 hopcount, u16 table, u16 route_destid,
|
|
u8 *route_port);
|
|
extern int rio_std_route_clr_table(struct rio_mport *mport, u16 destid,
|
|
u8 hopcount, u16 table);
|
|
extern int rio_set_port_lockout(struct rio_dev *rdev, u32 pnum, int lock);
|
|
extern struct rio_dev *rio_get_comptag(u32 comp_tag, struct rio_dev *from);
|
|
|
|
/* Structures internal to the RIO core code */
|
|
extern struct device_attribute rio_dev_attrs[];
|
|
extern spinlock_t rio_global_list_lock;
|
|
|
|
extern struct rio_switch_ops __start_rio_switch_ops[];
|
|
extern struct rio_switch_ops __end_rio_switch_ops[];
|
|
|
|
/* Helpers internal to the RIO core code */
|
|
#define DECLARE_RIO_SWITCH_SECTION(section, name, vid, did, init_hook) \
|
|
static const struct rio_switch_ops __rio_switch_##name __used \
|
|
__section(section) = { vid, did, init_hook };
|
|
|
|
/**
|
|
* DECLARE_RIO_SWITCH_INIT - Registers switch initialization routine
|
|
* @vid: RIO vendor ID
|
|
* @did: RIO device ID
|
|
* @init_hook: Callback that performs switch-specific initialization
|
|
*
|
|
* Manipulating switch route tables and error management in RIO
|
|
* is switch specific. This registers a switch by vendor and device ID with
|
|
* initialization callback for setting up switch operations and (if required)
|
|
* hardware initialization. A &struct rio_switch_ops is initialized with
|
|
* pointer to the init routine and placed into a RIO-specific kernel section.
|
|
*/
|
|
#define DECLARE_RIO_SWITCH_INIT(vid, did, init_hook) \
|
|
DECLARE_RIO_SWITCH_SECTION(.rio_switch_ops, vid##did, \
|
|
vid, did, init_hook)
|
|
|
|
#define RIO_GET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x00ff0000) >> 16))
|
|
#define RIO_SET_DID(size, x) (size ? (x & 0xffff) : ((x & 0x000000ff) << 16))
|