patch-2.4.20 linux-2.4.20/arch/mips64/sgi-ip27/ip27-nmi.c

• Lines: 169
• Date: Wed Dec 31 16:00:00 1969
• Orig file: linux-2.4.19/arch/mips64/sgi-ip27/ip27-nmi.c
• Orig date: Tue Nov 28 21:42:04 2000

diff -urN linux-2.4.19/arch/mips64/sgi-ip27/ip27-nmi.c linux-2.4.20/arch/mips64/sgi-ip27/ip27-nmi.c
@@ -1,168 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/mmzone.h>
-#include <linux/spinlock.h>
-#include <linux/smp.h>
-#include <asm/atomic.h>
-#include <asm/sn/types.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/nmi.h>
-#include <asm/sn/arch.h>
-#include <asm/sn/sn0/hub.h>
-
-#if 0
-#define NODE_NUM_CPUS(n)	CNODE_NUM_CPUS(n)
-#else
-#define NODE_NUM_CPUS(n)	CPUS_PER_NODE
-#endif
-
-#define CNODEID_NONE (cnodeid_t)-1
-#define enter_panic_mode()	spin_lock(&nmi_lock)
-
-typedef unsigned long machreg_t;
-
-spinlock_t nmi_lock = SPIN_LOCK_UNLOCKED;
-
-/*
- * Lets see what else we need to do here. Set up sp, gp?
- */
-void nmi_dump(void)
-{
-	void cont_nmi_dump(void);
-
-	cont_nmi_dump();
-}
-
-void install_cpu_nmi_handler(int slice)
-{
-	nmi_t *nmi_addr;
-
-	nmi_addr = (nmi_t *)NMI_ADDR(get_nasid(), slice);
-	if (nmi_addr->call_addr)
-		return;
-	nmi_addr->magic = NMI_MAGIC;
-	nmi_addr->call_addr = (void *)nmi_dump;
-	nmi_addr->call_addr_c =
-		(void *)(~((unsigned long)(nmi_addr->call_addr)));
-	nmi_addr->call_parm = 0;
-}
-
-/*
- * Copy the cpu registers which have been saved in the IP27prom format
- * into the eframe format for the node under consideration.
- */
-
-void
-nmi_cpu_eframe_save(nasid_t nasid,
-		    int	    slice)
-{
-	int 		i, numberof_nmi_cpu_regs;
-	machreg_t	*prom_format;
-
-	/* Get the total number of registers being saved by the prom */
-	numberof_nmi_cpu_regs = sizeof(struct reg_struct) / sizeof(machreg_t);
-
-	/* Get the pointer to the current cpu's register set. */
-	prom_format = 
-	    (machreg_t *)(TO_UNCAC(TO_NODE(nasid, IP27_NMI_KREGS_OFFSET)) +
-			  slice * IP27_NMI_KREGS_CPU_SIZE);
-
-	printk("NMI nasid %d: slice %d\n", nasid, slice);
-	for (i = 0; i < numberof_nmi_cpu_regs; i++)
-		printk("0x%lx  ", prom_format[i]);
-	printk("\n\n");
-}	
-
-/*
- * Copy the cpu registers which have been saved in the IP27prom format
- * into the eframe format for the node under consideration.
- */
-void
-nmi_node_eframe_save(cnodeid_t  cnode)
-{
-	int		cpu;
-	nasid_t		nasid;
-
-	/* Make sure that we have a valid node */
-	if (cnode == CNODEID_NONE)
-		return;
-
-	nasid = COMPACT_TO_NASID_NODEID(cnode);
-	if (nasid == INVALID_NASID)
-		return;
-
-	/* Save the registers into eframe for each cpu */
-	for(cpu = 0; cpu < NODE_NUM_CPUS(cnode); cpu++) 
-		nmi_cpu_eframe_save(nasid, cpu);
-}
-
-/*
- * Save the nmi cpu registers for all cpus in the system.
- */
-void
-nmi_eframes_save(void)
-{
-	cnodeid_t	cnode;
-
-	for(cnode = 0 ; cnode < numnodes; cnode++) 
-		nmi_node_eframe_save(cnode);
-}
-
-void
-cont_nmi_dump(void)
-{
-#ifndef REAL_NMI_SIGNAL
-	static atomic_t nmied_cpus = ATOMIC_INIT(0);
-
-	atomic_inc(&nmied_cpus);
-#endif
-	/* 
-	 * Use enter_panic_mode to allow only 1 cpu to proceed
-	 */
-	enter_panic_mode();
-
-#ifdef REAL_NMI_SIGNAL
-	/*
-	 * Wait up to 15 seconds for the other cpus to respond to the NMI.
-	 * If a cpu has not responded after 10 sec, send it 1 additional NMI.
-	 * This is for 2 reasons:
-	 *	- sometimes a MMSC fail to NMI all cpus.
-	 *	- on 512p SN0 system, the MMSC will only send NMIs to
-	 *	  half the cpus. Unfortunately, we dont know which cpus may be
-	 *	  NMIed - it depends on how the site chooses to configure.
-	 * 
-	 * Note: it has been measure that it takes the MMSC up to 2.3 secs to
-	 * send NMIs to all cpus on a 256p system.
-	 */
-	for (i=0; i < 1500; i++) {
-		for (node=0; node < numnodes; node++)
-			if (NODEPDA(node)->dump_count == 0)
-				break;
-		if (node == numnodes)
-			break;
-		if (i == 1000) {
-			for (node=0; node < numnodes; node++)
-				if (NODEPDA(node)->dump_count == 0) {
-					cpu = CNODE_TO_CPU_BASE(node);
-					for (n=0; n < CNODE_NUM_CPUS(node); cpu++, n++) {
-						CPUMASK_SETB(nmied_cpus, cpu);
-						/* 
-						 * cputonasid, cputoslice
-						 * needs kernel cpuid
-						 */
-						SEND_NMI((cputonasid(cpu)), (cputoslice(cpu)));
-					}
-				}
-					
-		}
-		udelay(10000);
-	}
-#else
-	while (atomic_read(&nmied_cpus) != smp_num_cpus);
-#endif
-
-	/*
-	 * Save the nmi cpu registers for all cpu in the eframe format.
-	 */
-	nmi_eframes_save();
-	LOCAL_HUB_S(NI_PORT_RESET, NPR_PORTRESET | NPR_LOCALRESET);
-}