patch-2.4.19 linux-2.4.19/arch/ia64/sn/sn1/smp.c

• Lines: 187
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.18/arch/ia64/sn/sn1/smp.c
• Orig date: Thu Apr 5 12:51:47 2001

diff -urN linux-2.4.18/arch/ia64/sn/sn1/smp.c linux-2.4.19/arch/ia64/sn/sn1/smp.c
@@ -1,186 +0,0 @@
-/*
- * SN1 Platform specific SMP Support
- *
- * Copyright (C) 2000 Silicon Graphics, Inc.
- * Copyright (C) 2000 Jack Steiner <steiner@sgi.com>
- */
-
-
-
-#include <linux/config.h>
-#include <linux/init.h>
-#include <linux/kernel.h>
-#include <linux/spinlock.h>
-#include <linux/threads.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-
-#include <asm/sn/mmzone_sn1.h>
-#include <asm/sal.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/smp.h>
-#include <asm/current.h>
-#include <asm/sn/sn_cpuid.h>
-
-
-
-
-/*
- * The following structure is used to pass params thru smp_call_function
- * to other cpus for flushing TLB ranges.
- */
-typedef struct {
-	unsigned long	start;
-	unsigned long	end;
-	unsigned long	nbits;
-} ptc_params_t;
-
-
-/*
- * The following table/struct is for remembering PTC coherency domains. It
- * is also used to translate sapicid into cpuids. We dont want to start 
- * cpus unless we know their cache domain.
- */
-#ifdef PTC_NOTYET
-sn_sapicid_info_t	sn_sapicid_info[NR_CPUS];
-#endif
-
-
-
-#ifdef PTC_NOTYET
-/*
- * NOTE: This is probably not good enough, but I dont want to try to make
- * it better until I get some statistics on a running system. 
- * At a minimum, we should only send IPIs to 1 processor in each TLB domain
- * & have it issue a ptc.g on it's own FSB. Also, serialize per FSB, not 
- * globally.
- *
- * More likely, we will have to do some work to reduce the frequency of calls to
- * this routine.
- */
-
-static void
-sn1_ptc_local(void *arg)
-{
-	ptc_params_t	*params = arg;
-	unsigned long	start, end, nbits;
-
-	start = params->start;
-	end = params->end;
-	nbits = params->nbits;
-
-	do {
-		__asm__ __volatile__ ("ptc.l %0,%1" :: "r"(start), "r"(nbits<<2) : "memory");
-		start += (1UL << nbits);
-	} while (start < end);
-}
-
-
-void
-sn1_ptc_global (unsigned long start, unsigned long end, unsigned long nbits)
-{
-	ptc_params_t	params;
-
-	params.start = start;
-	params.end = end;
-	params.nbits = nbits;
-
-	if (smp_call_function(sn1_ptc_local, &params, 1, 0) != 0)
-		panic("Unable to do ptc_global - timed out");
-
-	sn1_ptc_local(&params);
-}
-#endif
-
-
-
-
-void
-sn1_send_IPI(int cpuid, int vector, int delivery_mode, int redirect)
-{
-	long		*p, nasid, slice;
-	static int 	off[4] = {0x1800080, 0x1800088, 0x1a00080, 0x1a00088};
-
-	/*
-	 * ZZZ - Replace with standard macros when available.
-	 */
-	nasid = cpuid_to_nasid(cpuid);
-	slice = cpuid_to_slice(cpuid);
-	p = (long*)(0xc0000a0000000000LL | (nasid<<33) | off[slice]);
-
-#if defined(ZZZBRINGUP)
-	{
-	static int count=0;
-	if (count++ < 10) printk("ZZ sendIPI 0x%x->0x%x, vec %d, nasid 0x%lx, slice %ld, adr 0x%lx\n",
-		smp_processor_id(), cpuid, vector, nasid, slice, (long)p);
-	}
-#endif
-	mb();
-	*p = (delivery_mode << 8) | (vector & 0xff);
-	
-}
-
-
-#ifdef CONFIG_SMP
-
-#ifdef PTC_NOTYET
-static void __init
-process_sal_ptc_domain_info(ia64_sal_ptc_domain_info_t *di, int domain)
-{
-	ia64_sal_ptc_domain_proc_entry_t	*pe;
-	int 					i, sapicid, cpuid;
-
-	pe = __va(di->proc_list);
-	for (i=0; i<di->proc_count; i++, pe++) {
-		sapicid = id_eid_to_sapicid(pe->id, pe->eid);
-		cpuid = cpu_logical_id(sapicid);
-		sn_sapicid_info[cpuid].domain = domain;
-		sn_sapicid_info[cpuid].sapicid = sapicid;
-	}
-}
-
-
-static void __init
-process_sal_desc_ptc(ia64_sal_desc_ptc_t *ptc)
-{
-	ia64_sal_ptc_domain_info_t	*di;
-	int i;
-
-	di = __va(ptc->domain_info);
-	for (i=0; i<ptc->num_domains; i++, di++) {
-		process_sal_ptc_domain_info(di, i);	
-	}
-}
-#endif
-
-
-void __init
-init_sn1_smp_config(void)
-{
-
-	if (!ia64_ptc_domain_info)  {
-		printk("SMP: Can't find PTC domain info. Forcing UP mode\n");
-		smp_num_cpus = 1;
-		return;
-	}
-
-#ifdef PTC_NOTYET
-	memset (sn_sapicid_info, -1, sizeof(sn_sapicid_info));
-	process_sal_desc_ptc(ia64_ptc_domain_info);
-#endif
-
-}
-
-#else /* CONFIG_SMP */
-
-void __init
-init_sn1_smp_config(void)
-{
-
-#ifdef PTC_NOTYET
-	sn_sapicid_info[0].sapicid = hard_smp_processor_id();
-#endif
-}
-
-#endif /* CONFIG_SMP */