Viewing file:  ip37.c (2.37 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
/* $Id$
*
* 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
*/
/*
* ip37.c
* Support for IP35/IP37 machines
*/
#include <linux/types.h>
#include <linux/config.h>
#if defined(CONFIG_SGI_IP35) || defined(CONFIG_IA64_SGI_SN1) || defined(CONFIG_IA64_GENERIC)
#include <asm/sn/sgi.h>
#include <asm/sn/klconfig.h>
#include <asm/sn/sn1/hubdev.h>
#include <asm/sn/pci/bridge.h> /* for bridge_t */
xwidgetnum_t
hub_widget_id(nasid_t nasid)
{
hubii_wcr_t ii_wcr; /* the control status register */
ii_wcr.wcr_reg_value = REMOTE_HUB_L(nasid,IIO_WCR);
return ii_wcr.wcr_fields_s.wcr_widget_id;
}
/*
* get_nasid() returns the physical node id number of the caller.
*/
nasid_t
get_nasid(void)
{
return (nasid_t)((LOCAL_HUB_L(LB_REV_ID) & LRI_NODEID_MASK) >> LRI_NODEID_SHFT);
}
int
get_slice(void)
{
return LOCAL_HUB_L(PI_CPU_NUM);
}
int
is_fine_dirmode(void)
{
return (((LOCAL_HUB_L(LB_REV_ID) & LRI_SYSTEM_SIZE_MASK)
>> LRI_SYSTEM_SIZE_SHFT) == SYSTEM_SIZE_SMALL);
}
hubreg_t
get_hub_chiprev(nasid_t nasid)
{
return ((REMOTE_HUB_L(nasid, LB_REV_ID) & LRI_REV_MASK)
>> LRI_REV_SHFT);
}
int
verify_snchip_rev(void)
{
int hub_chip_rev;
int i;
static int min_hub_rev = 0;
nasid_t nasid;
static int first_time = 1;
extern int maxnodes;
if (first_time) {
for (i = 0; i < maxnodes; i++) {
nasid = COMPACT_TO_NASID_NODEID(i);
hub_chip_rev = get_hub_chiprev(nasid);
if ((hub_chip_rev < min_hub_rev) || (i == 0))
min_hub_rev = hub_chip_rev;
}
first_time = 0;
}
return min_hub_rev;
}
#ifdef SN1_USE_POISON_BITS
int
hub_bte_poison_ok(void)
{
/*
* For now, assume poisoning is ok. If it turns out there are chip
* bugs that prevent its use in early revs, there is some neat code
* to steal from the IP27 equivalent of this code.
*/
#ifdef BRINGUP /* temp disable BTE poisoning - might be sw bugs in this area */
return 0;
#else
return 1;
#endif
}
#endif /* SN1_USE_POISON_BITS */
void
ni_reset_port(void)
{
LOCAL_HUB_S(NI_RESET_ENABLE, NRE_RESETOK);
LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
}
#endif /* CONFIG_SGI_IP35 || CONFIG_IA64_SGI_SN1 */
|