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Diffstat (limited to 'arch/mips/kernel/mips-mt.c')
-rw-r--r--arch/mips/kernel/mips-mt.c192
1 files changed, 12 insertions, 180 deletions
diff --git a/arch/mips/kernel/mips-mt.c b/arch/mips/kernel/mips-mt.c
index 6ded9bd1489c..2ef610650a9e 100644
--- a/arch/mips/kernel/mips-mt.c
+++ b/arch/mips/kernel/mips-mt.c
@@ -1,5 +1,6 @@
+// SPDX-License-Identifier: GPL-2.0
/*
- * General MIPS MT support routines, usable in AP/SP, SMVP, or SMTC kernels
+ * General MIPS MT support routines, usable in AP/SP and SMVP.
* Copyright (C) 2005 Mips Technologies, Inc
*/
@@ -18,6 +19,7 @@
#include <asm/mipsmtregs.h>
#include <asm/r4kcache.h>
#include <asm/cacheflush.h>
+#include <asm/mips_mt.h>
int vpelimit;
@@ -41,102 +43,11 @@ static int __init maxtcs(char *str)
__setup("maxtcs=", maxtcs);
-/*
- * Dump new MIPS MT state for the core. Does not leave TCs halted.
- * Takes an argument which taken to be a pre-call MVPControl value.
- */
-
-void mips_mt_regdump(unsigned long mvpctl)
-{
- unsigned long flags;
- unsigned long vpflags;
- unsigned long mvpconf0;
- int nvpe;
- int ntc;
- int i;
- int tc;
- unsigned long haltval;
- unsigned long tcstatval;
-#ifdef CONFIG_MIPS_MT_SMTC
- void smtc_soft_dump(void);
-#endif /* CONFIG_MIPT_MT_SMTC */
-
- local_irq_save(flags);
- vpflags = dvpe();
- printk("=== MIPS MT State Dump ===\n");
- printk("-- Global State --\n");
- printk(" MVPControl Passed: %08lx\n", mvpctl);
- printk(" MVPControl Read: %08lx\n", vpflags);
- printk(" MVPConf0 : %08lx\n", (mvpconf0 = read_c0_mvpconf0()));
- nvpe = ((mvpconf0 & MVPCONF0_PVPE) >> MVPCONF0_PVPE_SHIFT) + 1;
- ntc = ((mvpconf0 & MVPCONF0_PTC) >> MVPCONF0_PTC_SHIFT) + 1;
- printk("-- per-VPE State --\n");
- for (i = 0; i < nvpe; i++) {
- for (tc = 0; tc < ntc; tc++) {
- settc(tc);
- if ((read_tc_c0_tcbind() & TCBIND_CURVPE) == i) {
- printk(" VPE %d\n", i);
- printk(" VPEControl : %08lx\n",
- read_vpe_c0_vpecontrol());
- printk(" VPEConf0 : %08lx\n",
- read_vpe_c0_vpeconf0());
- printk(" VPE%d.Status : %08lx\n",
- i, read_vpe_c0_status());
- printk(" VPE%d.EPC : %08lx %pS\n",
- i, read_vpe_c0_epc(),
- (void *) read_vpe_c0_epc());
- printk(" VPE%d.Cause : %08lx\n",
- i, read_vpe_c0_cause());
- printk(" VPE%d.Config7 : %08lx\n",
- i, read_vpe_c0_config7());
- break; /* Next VPE */
- }
- }
- }
- printk("-- per-TC State --\n");
- for (tc = 0; tc < ntc; tc++) {
- settc(tc);
- if (read_tc_c0_tcbind() == read_c0_tcbind()) {
- /* Are we dumping ourself? */
- haltval = 0; /* Then we're not halted, and mustn't be */
- tcstatval = flags; /* And pre-dump TCStatus is flags */
- printk(" TC %d (current TC with VPE EPC above)\n", tc);
- } else {
- haltval = read_tc_c0_tchalt();
- write_tc_c0_tchalt(1);
- tcstatval = read_tc_c0_tcstatus();
- printk(" TC %d\n", tc);
- }
- printk(" TCStatus : %08lx\n", tcstatval);
- printk(" TCBind : %08lx\n", read_tc_c0_tcbind());
- printk(" TCRestart : %08lx %pS\n",
- read_tc_c0_tcrestart(), (void *) read_tc_c0_tcrestart());
- printk(" TCHalt : %08lx\n", haltval);
- printk(" TCContext : %08lx\n", read_tc_c0_tccontext());
- if (!haltval)
- write_tc_c0_tchalt(0);
- }
-#ifdef CONFIG_MIPS_MT_SMTC
- smtc_soft_dump();
-#endif /* CONFIG_MIPT_MT_SMTC */
- printk("===========================\n");
- evpe(vpflags);
- local_irq_restore(flags);
-}
-
-static int mt_opt_norps;
static int mt_opt_rpsctl = -1;
static int mt_opt_nblsu = -1;
static int mt_opt_forceconfig7;
static int mt_opt_config7 = -1;
-static int __init rps_disable(char *s)
-{
- mt_opt_norps = 1;
- return 1;
-}
-__setup("norps", rps_disable);
-
static int __init rpsctl_set(char *str)
{
get_option(&str, &mt_opt_rpsctl);
@@ -159,40 +70,6 @@ static int __init config7_set(char *str)
}
__setup("config7=", config7_set);
-/* Experimental cache flush control parameters that should go away some day */
-int mt_protiflush;
-int mt_protdflush;
-int mt_n_iflushes = 1;
-int mt_n_dflushes = 1;
-
-static int __init set_protiflush(char *s)
-{
- mt_protiflush = 1;
- return 1;
-}
-__setup("protiflush", set_protiflush);
-
-static int __init set_protdflush(char *s)
-{
- mt_protdflush = 1;
- return 1;
-}
-__setup("protdflush", set_protdflush);
-
-static int __init niflush(char *s)
-{
- get_option(&s, &mt_n_iflushes);
- return 1;
-}
-__setup("niflush=", niflush);
-
-static int __init ndflush(char *s)
-{
- get_option(&s, &mt_n_dflushes);
- return 1;
-}
-__setup("ndflush=", ndflush);
-
static unsigned int itc_base;
static int __init set_itc_base(char *str)
@@ -208,9 +85,6 @@ void mips_mt_set_cpuoptions(void)
unsigned int oconfig7 = read_c0_config7();
unsigned int nconfig7 = oconfig7;
- if (mt_opt_norps) {
- printk("\"norps\" option deprecated: use \"rpsctl=\"\n");
- }
if (mt_opt_rpsctl >= 0) {
printk("34K return prediction stack override set to %d.\n",
mt_opt_rpsctl);
@@ -237,16 +111,6 @@ void mips_mt_set_cpuoptions(void)
printk("Config7: 0x%08x\n", read_c0_config7());
}
- /* Report Cache management debug options */
- if (mt_protiflush)
- printk("I-cache flushes single-threaded\n");
- if (mt_protdflush)
- printk("D-cache flushes single-threaded\n");
- if (mt_n_iflushes != 1)
- printk("I-Cache Flushes Repeated %d times\n", mt_n_iflushes);
- if (mt_n_dflushes != 1)
- printk("D-Cache Flushes Repeated %d times\n", mt_n_dflushes);
-
if (itc_base != 0) {
/*
* Configure ITC mapping. This code is very
@@ -258,9 +122,8 @@ void mips_mt_set_cpuoptions(void)
unsigned long ectlval;
unsigned long itcblkgrn;
- /* ErrCtl register is known as "ecc" to Linux */
- ectlval = read_c0_ecc();
- write_c0_ecc(ectlval | (0x1 << 26));
+ ectlval = read_c0_errctl();
+ write_c0_errctl(ectlval | (0x1 << 26));
ehb();
#define INDEX_0 (0x80000000)
#define INDEX_8 (0x80000008)
@@ -281,51 +144,20 @@ void mips_mt_set_cpuoptions(void)
ehb();
/* Write out to ITU with CACHE op */
cache_op(Index_Store_Tag_D, INDEX_0);
- write_c0_ecc(ectlval);
+ write_c0_errctl(ectlval);
ehb();
printk("Mapped %ld ITC cells starting at 0x%08x\n",
((itcblkgrn & 0x7fe00000) >> 20), itc_base);
}
}
-/*
- * Function to protect cache flushes from concurrent execution
- * depends on MP software model chosen.
- */
+const struct class mt_class = {
+ .name = "mt",
+};
-void mt_cflush_lockdown(void)
+static int __init mips_mt_init(void)
{
-#ifdef CONFIG_MIPS_MT_SMTC
- void smtc_cflush_lockdown(void);
-
- smtc_cflush_lockdown();
-#endif /* CONFIG_MIPS_MT_SMTC */
- /* FILL IN VSMP and AP/SP VERSIONS HERE */
-}
-
-void mt_cflush_release(void)
-{
-#ifdef CONFIG_MIPS_MT_SMTC
- void smtc_cflush_release(void);
-
- smtc_cflush_release();
-#endif /* CONFIG_MIPS_MT_SMTC */
- /* FILL IN VSMP and AP/SP VERSIONS HERE */
-}
-
-struct class *mt_class;
-
-static int __init mt_init(void)
-{
- struct class *mtc;
-
- mtc = class_create(THIS_MODULE, "mt");
- if (IS_ERR(mtc))
- return PTR_ERR(mtc);
-
- mt_class = mtc;
-
- return 0;
+ return class_register(&mt_class);
}
-subsys_initcall(mt_init);
+subsys_initcall(mips_mt_init);
generated by cgit (git 2.34.1) at 2025-12-25 04:07:33 +0000