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/* $Id$
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1992 - 1997, 2000 Silicon Graphics, Inc.
* Copyright (C) 2000 by Colin Ngam
*/
#ifndef _ASM_SN_SN1_SLOTNUM_H
#define _ASM_SN_SN1_SLOTNUM_H
#define SLOTNUM_MAXLENGTH 16
/*
* This file attempts to define a slot number space across all slots.
*
* Node slots
* Router slots
* Crosstalk slots
*
* Other slots are children of their parent crosstalk slot:
* PCI slots
* VME slots
*
* The PCI class has been added since the XBridge ASIC on SN-MIPS
* has built-in PCI bridges (2). On IBricks, widget E & F serve
* PCI busses, and on PBricks all widgets serve as PCI busses
* with the use of the super-bridge mode of the XBridge ASIC.
*/
#define SLOTNUM_NODE_CLASS 0x00 /* Node */
#define SLOTNUM_ROUTER_CLASS 0x10 /* Router */
#define SLOTNUM_XTALK_CLASS 0x20 /* Xtalk */
#define SLOTNUM_MIDPLANE_CLASS 0x30 /* Midplane */
#define SLOTNUM_XBOW_CLASS 0x40 /* Xbow */
#define SLOTNUM_KNODE_CLASS 0x50 /* Kego node */
#define SLOTNUM_PCI_CLASS 0x60 /* PCI widgets on XBridge */
#define SLOTNUM_INVALID_CLASS 0xf0 /* Invalid */
#define SLOTNUM_CLASS_MASK 0xf0
#define SLOTNUM_SLOT_MASK 0x0f
#define SLOTNUM_GETCLASS(_sn) ((_sn) & SLOTNUM_CLASS_MASK)
#define SLOTNUM_GETSLOT(_sn) ((_sn) & SLOTNUM_SLOT_MASK)
/* This determines module to pnode mapping. */
/* NODESLOTS_PER_MODULE has changed from 4 to 6
* to support the 12P 4IO configuration. This change
* helps in minimum number of changes to code which
* depend on the number of node boards within a module.
*/
#define NODESLOTS_PER_MODULE 6
#define NODESLOTS_PER_MODULE_SHFT 2
#define HIGHEST_I2C_VISIBLE_NODESLOT 4
#define RTRSLOTS_PER_MODULE 2
#if __KERNEL__
#include <asm/sn/xtalk/xtalk.h>
extern slotid_t xbwidget_to_xtslot(int crossbow, int widget);
extern slotid_t hub_slotbits_to_slot(slotid_t slotbits);
extern slotid_t hub_slot_to_crossbow(slotid_t hub_slot);
extern slotid_t router_slotbits_to_slot(slotid_t slotbits);
extern slotid_t get_node_slotid(nasid_t nasid);
extern slotid_t get_my_slotid(void);
extern slotid_t get_node_crossbow(nasid_t);
extern xwidgetnum_t hub_slot_to_widget(slotid_t);
extern void get_slotname(slotid_t, char *);
extern void get_my_slotname(char *);
extern slotid_t get_widget_slotnum(int xbow, int widget);
extern void get_widget_slotname(int, int, char *);
extern void router_slotbits_to_slotname(int, char *);
extern slotid_t meta_router_slotbits_to_slot(slotid_t) ;
extern slotid_t hub_slot_get(void);
extern int node_can_talk_to_elsc(void);
extern int slot_to_widget(int) ;
#define MAX_IO_SLOT_NUM 12
#define MAX_NODE_SLOT_NUM 4
#define MAX_ROUTER_SLOTNUM 2
#endif /* __KERNEL__ */
#endif /* _ASM_SN_SN1_SLOTNUM_H */
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