diff options
Diffstat (limited to 'arch/ia64/sn/kernel/llsc4.c')
| -rw-r--r-- | arch/ia64/sn/kernel/llsc4.c | 1044 |
1 files changed, 0 insertions, 1044 deletions
diff --git a/arch/ia64/sn/kernel/llsc4.c b/arch/ia64/sn/kernel/llsc4.c deleted file mode 100644 index 38373739789d6b..00000000000000 --- a/arch/ia64/sn/kernel/llsc4.c +++ /dev/null @@ -1,1044 +0,0 @@ -/* - * - * 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) 2000-2002 Silicon Graphics, Inc. All rights reserved. - */ - -#include <linux/config.h> -#include <linux/kernel.h> -#include <linux/sched.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/smp.h> -#include <linux/kernel_stat.h> -#include <linux/mm.h> -#include <linux/delay.h> -#include <linux/string.h> -#include <linux/efi.h> -#include <asm/page.h> -#include <linux/threads.h> -#include <asm/sn/simulator.h> -#include <asm/sn/leds.h> - -#include "llsc4.h" - - -#ifdef STANDALONE -#include "lock.h" -#endif - -#ifdef INTTEST -static int inttest=0; -#endif - -#ifdef IA64_SEMFIX_INSN -#undef IA64_SEMFIX_INSN -#endif -#ifdef IA64_SEMFIX -#undef IA64_SEMFIX -#endif -# define IA64_SEMFIX_INSN -# define IA64_SEMFIX "" - -#define NOLOCK 0xdead -#define BGUARD(linei) (0xbbbb0000 | (linei)); -#define EGUARD(linei) (0xeeee0000 | (linei)); -#define GUARDLINE(v) ((v)&0xffff) - -/* - * Test parameter table for AUTOTEST - */ -typedef struct { - int passes; - int linecount; - int linepad; -} autotest_table_t; - -autotest_table_t autotest_table[] = { - {50000000, 2, 0x2b4 }, - {50000000, 16, 0, }, - {50000000, 16, 4, }, - {50000000, 128, 0x44 }, - {50000000, 128, 0x84 }, - {50000000, 128, 0x200 }, - {50000000, 128, 0x204 }, - {50000000, 128, 0x2b4 }, - {50000000, 2, 8*MB+0x2b4 }, - {50000000, 16, 8*MB+0 }, - {50000000, 16, 8*MB+4 }, - {50000000, 128, 8*MB+0x44 }, - {50000000, 128, 8*MB+0x84 }, - {50000000, 128, 8*MB+0x200 }, - {50000000, 128, 8*MB+0x204 }, - {50000000, 128, 8*MB+0x2b4 }, - {0}}; - -/* - * Array of virtual addresses available for test purposes. - */ - -typedef struct { - long vstart; - long vend; - long nextaddr; - long nextinit; - int wrapcount; -} memmap_t; - -#define MAPCHUNKS 128 -memmap_t memmap[MAPCHUNKS]; -int memmapx=0; - -typedef struct { - void *addr; - long data[16]; - long data_fc[16]; -} capture_line_t; - -typedef struct { - int size; - void *blockaddr; - void *shadaddr; - long blockdata[48]; - long shaddata[48]; - long blockdata_fc[48]; - long shaddata_fc[48]; - long synerr; -} capture_t; - -/* - * PORTING NOTE: revisit this statement. On hardware we put mbase at 0 and - * the rest of the tables have to start at 1MB to skip PROM tables. - */ -#define THREADPRIVATESZ() ((sizeof(threadprivate_t)+511)/512*512) -#define THREADPRIVATE(t) ((threadprivate_t*)(((long)mbase)+4096+t*THREADPRIVATESZ())) - -#define k_capture mbase->sk_capture -#define k_go mbase->sk_go -#define k_linecount mbase->sk_linecount -#define k_passes mbase->sk_passes -#define k_napticks mbase->sk_napticks -#define k_stop_on_error mbase->sk_stop_on_error -#define k_verbose mbase->sk_verbose -#define k_threadprivate mbase->sk_threadprivate -#define k_blocks mbase->sk_blocks -#define k_iter_msg mbase->sk_iter_msg -#define k_vv mbase->sk_vv -#define k_linepad mbase->sk_linepad -#define k_options mbase->sk_options -#define k_testnumber mbase->sk_testnumber -#define k_currentpass mbase->sk_currentpass - -static long blocks[MAX_LINECOUNT]; /* addresses of data blocks */ -static control_t *mbase; -static vint initialized=0; - -static unsigned int ran_conf_llsc(int); -static int rerr(capture_t *, char *, void *, void *, int, int, int, int, int, int); -static void dumpline(void *, char *, char *, void *, void *, int); -static int checkstop(int, int, uint); -static void spin(int); -static void capturedata(capture_t *, uint, void *, void *, int); -static int randn(uint max, uint *seed); -static uint zrandom (uint *zranseed); -static int set_lock(uint *, uint); -static int clr_lock(uint *, uint); -static void Speedo(void); - -int autotest_enabled=0; -static int llsctest_number=-1; -static int errstop_enabled=0; -static int fail_enabled=0; -static int l4_opt=0; -static int selective_trigger=0; -static int dump_block_addrs_opt=0; -static lock_t errlock=NOLOCK; -static private_t init_private[LLSC_MAXCPUS]; - -static int __init autotest_enable(char *str) -{ - autotest_enabled = 1; - return 1; -} -static int __init set_llscblkadr(char *str) -{ - dump_block_addrs_opt = 1; - return 1; -} -static int __init set_llscselt(char *str) -{ - selective_trigger = 1; - return 1; -} -static int __init set_llsctest(char *str) -{ - llsctest_number = simple_strtol(str, &str, 10); - if (llsctest_number < 0 || llsctest_number > 15) - llsctest_number = -1; - return 1; -} -static int __init set_llscerrstop(char *str) -{ - errstop_enabled = 1; - return 1; -} -static int __init set_llscfail(char *str) -{ - fail_enabled = 8; - return 1; -} -static int __init set_llscl4(char *str) -{ - l4_opt = 1; - return 1; -} - -static void print_params(void) -{ - printk ("********* Enter AUTOTEST facility on master cpu *************\n"); - printk (" Test options:\n"); - printk (" llsctest=<n>\t%d\tTest number to run (all = -1)\n", llsctest_number); - printk (" llscerrstop \t%s\tStop on error\n", errstop_enabled ? "on" : "off"); - printk (" llscfail \t%s\tForce a failure to test the trigger & error messages\n", fail_enabled ? "on" : "off"); - printk (" llscselt \t%s\tSelective triger on failures\n", selective_trigger ? "on" : "off"); - printk (" llscblkadr \t%s\tDump data block addresses\n", dump_block_addrs_opt ? "on" : "off"); - printk (" llscl4 \t%s\tRun only tests that evict from L4\n", l4_opt ? "on" : "off"); - printk (" SEMFIX: %s\n", IA64_SEMFIX); - printk ("\n"); -} -__setup("autotest", autotest_enable); -__setup("llsctest=", set_llsctest); -__setup("llscerrstop", set_llscerrstop); -__setup("llscfail", set_llscfail); -__setup("llscselt", set_llscselt); -__setup("llscblkadr", set_llscblkadr); -__setup("llscl4", set_llscl4); - - - -static inline int -set_lock(uint *lock, uint id) -{ - uint old; - old = cmpxchg_acq(lock, NOLOCK, id); - return (old == NOLOCK); -} - -static inline int -clr_lock(uint *lock, uint id) -{ - uint old; - old = cmpxchg_rel(lock, id, NOLOCK); - return (old == id); -} - -static inline void -init_lock(uint *lock) -{ - *lock = NOLOCK; -} - -/*------------------------------------------------------------------------+ -| Routine : ran_conf_llsc - ll/sc shared data test | -| Description: This test checks the coherency of shared data | -+------------------------------------------------------------------------*/ -static unsigned int -ran_conf_llsc(int thread) -{ - private_t pval; - share_t sval, sval2; - uint vv, linei, slinei, sharei, pass; - long t; - lock_t lockpat; - share_t *sharecopy; - long verbose, napticks, passes, linecount, lcount; - dataline_t *linep, *slinep; - int s, seed; - threadprivate_t *tp; - uint iter_msg, iter_msg_i=0; - int vv_mask; - int correct_errors; - int errs=0; - int stillbad; - capture_t capdata; - private_t *privp; - share_t *sharep; - - - linecount = k_linecount; - napticks = k_napticks; - verbose = k_verbose; - passes = k_passes; - iter_msg = k_iter_msg; - seed = (thread + 1) * 647; - tp = THREADPRIVATE(thread); - vv_mask = (k_vv>>((thread%16)*4)) & 0xf; - correct_errors = k_options&0xff; - - memset (&capdata, 0, sizeof(capdata)); - for (linei=0; linei<linecount; linei++) - tp->private[linei] = thread; - - for (pass = 1; passes == 0 || pass < passes; pass++) { - lockpat = (pass & 0x0fffffff) + (thread <<28); - if (lockpat == NOLOCK) - continue; - tp->threadpasses = pass; - if (checkstop(thread, pass, lockpat)) - return 0; - iter_msg_i++; - if (iter_msg && iter_msg_i > iter_msg) { - printk("Thread %d, Pass %d\n", thread, pass); - iter_msg_i = 0; - } - lcount = 0; - - /* - * Select line to perform operations on. - */ - linei = randn(linecount, &seed); - sharei = randn(2, &seed); - slinei = (linei + (linecount/2))%linecount; /* I don't like this - fix later */ - - linep = (dataline_t *)blocks[linei]; - slinep = (dataline_t *)blocks[slinei]; - if (sharei == 0) - sharecopy = &slinep->share0; - else - sharecopy = &slinep->share1; - - - vv = randn(4, &seed); - if ((vv_mask & (1<<vv)) == 0) - continue; - - if (napticks) { - t = randn(napticks, &seed); - udelay(t); - } - privp = &linep->private[thread]; - sharep = &linep->share[sharei]; - - switch(vv) { - case 0: - /* Read and verify private count on line. */ - pval = *privp; - if (verbose) - printk("Line:%3d, Thread:%d:%d. Val: %x\n", linei, thread, vv, tp->private[linei]); - if (pval != tp->private[linei]) { - capturedata(&capdata, pass, privp, NULL, sizeof(*privp)); - stillbad = (*privp != tp->private[linei]); - if (rerr(&capdata, "Private count", linep, slinep, thread, pass, linei, tp->private[linei], pval, stillbad)) { - return 1; - } - if (correct_errors) { - tp->private[linei] = *privp; - } - errs++; - } - break; - - case 1: - /* Read, verify, and increment private count on line. */ - pval = *privp; - if (verbose) - printk("Line:%3d, Thread:%d:%d. Val: %x\n", linei, thread, vv, tp->private[linei]); - if (pval != tp->private[linei]) { - capturedata(&capdata, pass, privp, NULL, sizeof(*privp)); - stillbad = (*privp != tp->private[linei]); - if (rerr(&capdata, "Private count & inc", linep, slinep, thread, pass, linei, tp->private[linei], pval, stillbad)) { - return 1; - } - errs++; - } - pval = (pval==255) ? 0 : pval+1; - *privp = pval; - tp->private[linei] = pval; - break; - - case 2: - /* Lock line, read and verify shared data. */ - if (verbose) - printk("Line:%3d, Thread:%d:%d. Val: %x\n", linei, thread, vv, *sharecopy); - lcount = 0; - while (LOCK(sharei) != 1) { - if (checkstop(thread, pass, lockpat)) - return 0; - if (lcount++>1000000) { - capturedata(&capdata, pass, LOCKADDR(sharei), NULL, sizeof(lock_t)); - stillbad = (GETLOCK(sharei) != 0); - rerr(&capdata, "Shared data lock", linep, slinep, thread, pass, linei, 0, GETLOCK(sharei), stillbad); - return 1; - } - if ((lcount&0x3fff) == 0) - udelay(1000); - } - - sval = *sharep; - sval2 = *sharecopy; - if (pass > 12 && thread == 0 && fail_enabled == 1) - sval++; - if (sval != sval2) { - capturedata(&capdata, pass, sharep, sharecopy, sizeof(*sharecopy)); - stillbad = (*sharep != *sharecopy); - if (!stillbad && *sharep != sval && *sharecopy == sval2) - stillbad = 2; - if (rerr(&capdata, "Shared data", linep, slinep, thread, pass, linei, sval2, sval, stillbad)) { - return 1; - } - if (correct_errors) - *sharep = *sharecopy; - errs++; - } - - - if ( (s=UNLOCK(sharei)) != 1) { - capturedata(&capdata, pass, LOCKADDR(sharei), NULL, 4); - stillbad = (GETLOCK(sharei) != lockpat); - if (rerr(&capdata, "Shared data unlock", linep, slinep, thread, pass, linei, lockpat, GETLOCK(sharei), stillbad)) - return 1; - if (correct_errors) - ZEROLOCK(sharei); - errs++; - } - break; - - case 3: - /* Lock line, read and verify shared data, modify shared data. */ - if (verbose) - printk("Line:%3d, Thread:%d:%d. Val: %x\n", linei, thread, vv, *sharecopy); - lcount = 0; - while (LOCK(sharei) != 1) { - if (checkstop(thread, pass, lockpat)) - return 0; - if (lcount++>1000000) { - capturedata(&capdata, pass, LOCKADDR(sharei), NULL, sizeof(lock_t)); - stillbad = (GETLOCK(sharei) != 0); - rerr(&capdata, "Shared data lock & inc", linep, slinep, thread, pass, linei, 0, GETLOCK(sharei), stillbad); - return 1; - } - if ((lcount&0x3fff) == 0) - udelay(1000); - } - sval = *sharep; - sval2 = *sharecopy; - if (sval != sval2) { - capturedata(&capdata, pass, sharep, sharecopy, sizeof(*sharecopy)); - stillbad = (*sharep != *sharecopy); - if (!stillbad && *sharep != sval && *sharecopy == sval2) - stillbad = 2; - if (rerr(&capdata, "Shared data & inc", linep, slinep, thread, pass, linei, sval2, sval, stillbad)) { - return 1; - } - errs++; - } - - *sharep = lockpat; - *sharecopy = lockpat; - - - if ( (s=UNLOCK(sharei)) != 1) { - capturedata(&capdata, pass, LOCKADDR(sharei), NULL, 4); - stillbad = (GETLOCK(sharei) != lockpat); - if (rerr(&capdata, "Shared data & inc unlock", linep, slinep, thread, pass, linei, thread, GETLOCK(sharei), stillbad)) - return 1; - if (correct_errors) - ZEROLOCK(sharei); - errs++; - } - break; - } - } - - return (errs > 0); -} - -static void -trigger_la(long val) -{ - long *p; - - p = (long*)0xc0000a0001000020L; /* PI_CPU_NUM */ - *p = val; -} - -static long -getsynerr(void) -{ - long err, *errp; - - errp = (long*)0xc0000e0000000340L; /* SYN_ERR */ - err = *errp; - if (err) - *errp = -1L; - return (err & ~0x60); -} - -static int -rerr(capture_t *cap, char *msg, void *lp, void *slp, int thread, int pass, int badlinei, int exp, int found, int stillbad) -{ - int cpu, i, linei; - long synerr; - int selt; - - - selt = selective_trigger && stillbad > 1 && - memcmp(cap->blockdata, cap->blockdata_fc, 128) != 0 && - memcmp(cap->shaddata, cap->shaddata_fc, 128) == 0; - if (selt) { - trigger_la(pass); - } else if (selective_trigger) { - k_go = ST_STOP; - return k_stop_on_error;; - } - - spin(1); - i = 100; - while (i && set_lock(&errlock, 1) != 1) { - spin(1); - i--; - } - printk ("\nDataError!: %-20s, test %ld, thread %d, line:%d, pass %d (0x%x), time %ld expected:%x, found:%x\n", - msg, k_testnumber, thread, badlinei, pass, pass, jiffies, exp, found); - - dumpline (lp, "Corrupted data", "D ", cap->blockaddr, cap->blockdata, cap->size); -#ifdef ZZZ - if (memcmp(cap->blockdata, cap->blockdata_fc, 128)) - dumpline (lp, "Corrupted data", "DF", cap->blockaddr, cap->blockdata_fc, cap->size); -#endif - - if (cap->shadaddr) { - dumpline (slp, "Shadow data", "S ", cap->shadaddr, cap->shaddata, cap->size); -#ifdef ZZZ - if (memcmp(cap->shaddata, cap->shaddata_fc, 128)) - dumpline (slp, "Shadow data", "SF", cap->shadaddr, cap->shaddata_fc, cap->size); -#endif - } - - printk("Threadpasses: "); - for (cpu=0,i=0; cpu<LLSC_MAXCPUS; cpu++) - if (k_threadprivate[cpu]->threadpasses) { - if (i && (i%8) == 0) - printk("\n : "); - printk(" %d:0x%x", cpu, k_threadprivate[cpu]->threadpasses); - i++; - } - printk("\n"); - - for (linei=0; linei<k_linecount; linei++) { - int slinei, g1linei, g2linei, g1err, g2err, sh0err, sh1err; - dataline_t *linep, *slinep; - - slinei = (linei + (k_linecount/2))%k_linecount; - linep = (dataline_t *)blocks[linei]; - slinep = (dataline_t *)blocks[slinei]; - - g1linei = GUARDLINE(linep->guard1); - g2linei = GUARDLINE(linep->guard2); - g1err = (g1linei != linei); - g2err = (g2linei != linei); - sh0err = (linep->share[0] != slinep->share0); - sh1err = (linep->share[1] != slinep->share1); - - if (g1err || g2err || sh0err || sh1err) { - printk("Line 0x%lx (%03d), %sG1 0x%lx (%03d), %sG2 0x%lx (%03d), %sSH0 %08x (%08x), %sSH1 %08x (%08x)\n", - blocks[linei], linei, - g1err ? "*" : " ", blocks[g1linei], g1linei, - g2err ? "*" : " ", blocks[g2linei], g2linei, - sh0err ? "*" : " ", linep->share[0], slinep->share0, - sh1err ? "*" : " ", linep->share[1], slinep->share1); - - - } - } - - printk("\nData was %sfixed by flushcache\n", (stillbad == 1 ? "**** NOT **** " : " ")); - synerr = getsynerr(); - if (synerr) - printk("SYNERR: Thread %d, Synerr: 0x%lx\n", thread, synerr); - spin(2); - printk("\n\n"); - clr_lock(&errlock, 1); - - if (errstop_enabled) { - local_irq_disable(); - while(1); - } - return k_stop_on_error; -} - - -static void -dumpline(void *lp, char *str1, char *str2, void *addr, void *data, int size) -{ - long *p; - int i, off; - - printk("%s at 0x%lx, size %d, block starts at 0x%lx\n", str1, (long)addr, size, (long)lp); - p = (long*) data; - for (i=0; i<48; i++, p++) { - if (i%8 == 0) printk("%2s", i==16 ? str2 : " "); - printk(" %016lx", *p); - if ((i&7)==7) printk("\n"); - } - printk(" "); - off = (((long)addr) ^ size) & 63L; - for (i=0; i<off+size; i++) { - printk("%s", (i>=off) ? "--" : " "); - if ((i%8) == 7) - printk(" "); - } - - off = ((long)addr) & 127; - printk(" (line %d)\n", 2+off/64+1); -} - - -static int -randn(uint max, uint *seedp) -{ - if (max == 1) - return(0); - else - return((int)(zrandom(seedp)>>10) % max); -} - - -static int -checkstop(int thread, int pass, uint lockpat) -{ - long synerr; - - if (k_go == ST_RUN) - return 0; - if (k_go == ST_STOP) - return 1; - - if (errstop_enabled) { - local_irq_disable(); - while(1); - } - synerr = getsynerr(); - spin(2); - if (k_go == ST_STOP) - return 1; - if (synerr) - printk("SYNERR: Thread %d, Synerr: 0x%lx\n", thread, synerr); - return 1; -} - - -static void -spin(int j) -{ - udelay(j * 500000); -} - -static void -capturedata(capture_t *cap, uint pass, void *blockaddr, void *shadaddr, int size) -{ - - if (!selective_trigger) - trigger_la (pass); - - memcpy (cap->blockdata, CACHEALIGN(blockaddr)-128, 3*128); - if (shadaddr) - memcpy (cap->shaddata, CACHEALIGN(shadaddr)-128, 3*128); - - if (k_stop_on_error) { - k_go = ST_ERRSTOP; - } - - cap->size = size; - cap->blockaddr = blockaddr; - cap->shadaddr = shadaddr; - - asm volatile ("fc %0" :: "r"(blockaddr) : "memory"); - ia64_sync_i(); - ia64_srlz_d(); - memcpy (cap->blockdata_fc, CACHEALIGN(blockaddr)-128, 3*128); - - if (shadaddr) { - asm volatile ("fc %0" :: "r"(shadaddr) : "memory"); - ia64_sync_i(); - ia64_srlz_d(); - memcpy (cap->shaddata_fc, CACHEALIGN(shadaddr)-128, 3*128); - } -} - -int zranmult = 0x48c27395; - -static uint -zrandom (uint *seedp) -{ - *seedp = (*seedp * zranmult) & 0x7fffffff; - return (*seedp); -} - - -void -set_autotest_params(void) -{ - static int testnumber=-1; - - if (llsctest_number >= 0) { - testnumber = llsctest_number; - } else { - testnumber++; - if (autotest_table[testnumber].passes == 0) { - testnumber = 0; - dump_block_addrs_opt = 0; - } - } - if (testnumber == 0 && l4_opt) testnumber = 9; - - k_passes = autotest_table[testnumber].passes; - k_linepad = autotest_table[testnumber].linepad; - k_linecount = autotest_table[testnumber].linecount; - k_testnumber = testnumber; - - if (IS_RUNNING_ON_SIMULATOR()) { - printk ("llsc start test %ld\n", k_testnumber); - k_passes = 1000; - } -} - - -static void -set_leds(int errs) -{ - unsigned char leds=0; - - /* - * Leds are: - * ppppeee- - * where - * pppp = test number - * eee = error count but top bit is stick - */ - - leds = ((errs&7)<<1) | ((k_testnumber&15)<<4) | (errs ? 0x08 : 0); - set_led_bits(leds, LED_MASK_AUTOTEST); -} - -static void -setup_block_addresses(void) -{ - int i, stride, memmapi; - dataline_t *dp; - long *ip, *ipe; - - - stride = k_linepad + sizeof(dataline_t); - memmapi = 0; - for (i=0; i<memmapx; i++) { - memmap[i].nextaddr = memmap[i].vstart; - memmap[i].nextinit = memmap[i].vstart; - memmap[i].wrapcount = 0; - } - - for (i=0; i<k_linecount; i++) { - blocks[i] = memmap[memmapi].nextaddr; - dp = (dataline_t*)blocks[i]; - memmap[memmapi].nextaddr += (stride & 0xffff); - if (memmap[memmapi].nextaddr + sizeof(dataline_t) >= memmap[memmapi].vend) { - memmap[memmapi].wrapcount++; - memmap[memmapi].nextaddr = memmap[memmapi].vstart + - memmap[memmapi].wrapcount * sizeof(dataline_t); - } - - ip = (long*)((memmap[memmapi].nextinit+7)&~7); - ipe = (long*)(memmap[memmapi].nextaddr+2*sizeof(dataline_t)+8); - while(ip <= ipe && ip < ((long*)memmap[memmapi].vend-8)) - *ip++ = (long)ip; - memmap[memmapi].nextinit = (long) ipe; - dp->guard1 = BGUARD(i); - dp->guard2 = EGUARD(i); - dp->lock[0] = dp->lock[1] = NOLOCK; - dp->share[0] = dp->share0 = 0x1111; - dp->share[1] = dp->share1 = 0x2222; - memcpy(dp->private, init_private, LLSC_MAXCPUS*sizeof(private_t)); - - - if (stride > 16384) { - memmapi++; - if (memmapi == memmapx) - memmapi = 0; - } - } - -} - -static void -dump_block_addrs(void) -{ - int i; - - printk("LLSC TestNumber %ld\n", k_testnumber); - - for (i=0; i<k_linecount; i++) { - printk(" %lx", blocks[i]); - if (i%4 == 3) - printk("\n"); - } - printk("\n"); -} - - -static void -set_thread_state(int cpuid, int state) -{ - if (k_threadprivate[cpuid]->threadstate == TS_KILLED) { - set_led_bits(LED_MASK_AUTOTEST, LED_MASK_AUTOTEST); - while(1); - } - k_threadprivate[cpuid]->threadstate = state; -} - -#define MINBLK (16*1024*1024) -static int -build_mem_map(unsigned long start, unsigned long end, void *arg) -{ - long lstart, lend; - long align = 8*MB; - - printk ("LLSC memmap: start 0x%lx, end 0x%lx, (0x%lx - 0x%lx)\n", - start, end, (long) virt_to_page(start), (long) virt_to_page(end-PAGE_SIZE)); - - if (memmapx >= MAPCHUNKS || (end-start) < MINBLK) - return 0; - - /* - * Start in the middle of the range & find the first non-free page in both directions - * from the midpoint. This is likely to be the bigest free block. - */ - lend = lstart = start + (end-start)/2; - while (lend < end && !PageReserved(virt_to_page(lend)) && virt_to_page(lend)->count.counter == 0) - lend += PAGE_SIZE; - lend -= PAGE_SIZE; - - while (lstart >= start && !PageReserved(virt_to_page(lstart)) && virt_to_page(lstart)->count.counter == 0) - lstart -= PAGE_SIZE; - lstart += PAGE_SIZE; - - lstart = (lstart + align -1) /align * align; - end = end / align * align; - if (lstart >= end) - return 0; - printk (" memmap: start 0x%lx, end 0x%lx\n", lstart, end); - - memmap[memmapx].vstart = lstart; - memmap[memmapx].vend = end; - memmapx++; - return 0; -} - -void int_test(void); - -int -llsc_main (int cpuid) -{ - int i, cpu, is_master, repeatcnt=0; - unsigned int preverr=0, errs=0, pass=0; - int automode=0; - -#ifdef INTTEST - if (inttest) - int_test(); -#endif - - if (!autotest_enabled) - return 0; - -#ifdef CONFIG_SMP - is_master = !smp_processor_id(); -#else - is_master = 1; -#endif - - - if (is_master) { - mbase = (control_t*) __get_free_pages(GFP_KERNEL, get_order(4096+THREADPRIVATESZ()*LLSC_MAXCPUS)); - printk("LLSC: mbase 0x%lx\n", (long)mbase); - print_params(); - if(!IS_RUNNING_ON_SIMULATOR()) - spin(10); - k_currentpass = 0; - k_go = ST_IDLE; - k_passes = DEF_PASSES; - k_napticks = DEF_NAPTICKS; - k_stop_on_error = DEF_STOP_ON_ERROR; - k_verbose = DEF_VERBOSE; - k_linecount = DEF_LINECOUNT; - k_iter_msg = DEF_ITER_MSG; - k_vv = DEF_VV; - k_linepad = DEF_LINEPAD; - k_blocks = (void*)blocks; - efi_memmap_walk(build_mem_map, 0); - -#ifdef CONFIG_IA64_SGI_AUTOTEST - automode = 1; -#endif - - for (i=0; i<LLSC_MAXCPUS; i++) { - k_threadprivate[i] = THREADPRIVATE(i); - memset(k_threadprivate[i], 0, sizeof(*k_threadprivate[i])); - init_private[i] = i; - } - mb(); - initialized = 1; - } else { - while (initialized == 0) - udelay(100); - } - -loop: - if (is_master) { - if (automode) { - if (!preverr || repeatcnt++ > 5) { - set_autotest_params(); - repeatcnt = 0; - } - } else { - while (k_go == ST_IDLE); - } - - k_go = ST_INIT; - if (k_linecount > MAX_LINECOUNT) k_linecount = MAX_LINECOUNT; - k_linecount = k_linecount & ~1; - setup_block_addresses(); - if (!preverr && dump_block_addrs_opt) - dump_block_addrs(); - - k_currentpass = pass++; - k_go = ST_RUN; - if (fail_enabled) - fail_enabled--; - - } else { - while (k_go != ST_RUN || k_currentpass != pass); - pass++; - } - - - set_leds(errs); - set_thread_state(cpuid, TS_RUNNING); - - errs += ran_conf_llsc(cpuid); - preverr = (k_go == ST_ERRSTOP); - - set_leds(errs); - set_thread_state(cpuid, TS_STOPPED); - - if (is_master) { - Speedo(); - for (i=0, cpu=0; cpu<LLSC_MAXCPUS; cpu++) { - while (k_threadprivate[cpu]->threadstate == TS_RUNNING) { - i++; - if (i == 10000) { - k_go = ST_STOP; - printk (" llsc master stopping test number %ld\n", k_testnumber); - } - if (i > 100000) { - k_threadprivate[cpu]->threadstate = TS_KILLED; - printk (" llsc: master killing cpuid %d, running test number %ld\n", - cpu, k_testnumber); - } - udelay(1000); - } - } - } - - goto loop; -} - - -static void -Speedo(void) -{ - static int i = 0; - - switch (++i%4) { - case 0: - printk("|\b"); - break; - case 1: - printk("\\\b"); - break; - case 2: - printk("-\b"); - break; - case 3: - printk("/\b"); - break; - } -} - -#ifdef INTTEST - -/* ======================================================================================================== - * - * Some test code to verify that interrupts work - * - * Add the following to the arch/ia64/kernel/smp.c after the comment "Reschedule callback" - * if (zzzprint_resched) printk(" cpu %d got interrupt\n", smp_processor_id()); - * - * Enable the code in arch/ia64/sn/sn1/smp.c to print sending IPIs. - * - */ - -static int __init set_inttest(char *str) -{ - inttest = 1; - autotest_enabled = 1; - - return 1; -} - -__setup("inttest=", set_inttest); - -int zzzprint_resched=0; - -void -int_test() { - int mycpu, cpu; - static volatile int control_cpu=0; - - mycpu = smp_processor_id(); - zzzprint_resched = 2; - - printk("Testing cross interrupts\n"); - - while (control_cpu != smp_num_cpus) { - if (mycpu == cpu_logical_map(control_cpu)) { - for (cpu=0; cpu<smp_num_cpus; cpu++) { - printk("Sending interrupt from %d to %d\n", mycpu, cpu_logical_map(cpu)); - udelay(IS_RUNNING_ON_SIMULATOR ? 10000 : 400000); - smp_send_reschedule(cpu_logical_map(cpu)); - udelay(IS_RUNNING_ON_SIMULATOR ? 10000 : 400000); - smp_send_reschedule(cpu_logical_map(cpu)); - udelay(IS_RUNNING_ON_SIMULATOR ? 10000 : 400000); - } - control_cpu++; - } - } - - zzzprint_resched = 1; - - if (mycpu == cpu_logical_map(smp_num_cpus-1)) { - printk("\nTight loop of cpu %d sending ints to cpu 0 (every 100 us)\n", mycpu); - udelay(IS_RUNNING_ON_SIMULATOR ? 1000 : 1000000); - __cli(); - while (1) { - smp_send_reschedule(0); - udelay(100); - } - - } - - while(1); -} -#endif |