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-rw-r--r--kernel/arch/mips/lib/Makefile2
-rw-r--r--kernel/arch/mips/lib/bswapdi.c15
-rw-r--r--kernel/arch/mips/lib/bswapsi.c11
-rw-r--r--kernel/arch/mips/lib/dump_tlb.c137
-rw-r--r--kernel/arch/mips/lib/memset.S2
-rw-r--r--kernel/arch/mips/lib/r3k_dump_tlb.c24
6 files changed, 144 insertions, 47 deletions
diff --git a/kernel/arch/mips/lib/Makefile b/kernel/arch/mips/lib/Makefile
index 1e9e900cd..0344e575f 100644
--- a/kernel/arch/mips/lib/Makefile
+++ b/kernel/arch/mips/lib/Makefile
@@ -15,4 +15,4 @@ obj-$(CONFIG_CPU_R3000) += r3k_dump_tlb.o
obj-$(CONFIG_CPU_TX39XX) += r3k_dump_tlb.o
# libgcc-style stuff needed in the kernel
-obj-y += ashldi3.o ashrdi3.o cmpdi2.o lshrdi3.o ucmpdi2.o
+obj-y += ashldi3.o ashrdi3.o bswapsi.o bswapdi.o cmpdi2.o lshrdi3.o ucmpdi2.o
diff --git a/kernel/arch/mips/lib/bswapdi.c b/kernel/arch/mips/lib/bswapdi.c
new file mode 100644
index 000000000..77e5f9c1f
--- /dev/null
+++ b/kernel/arch/mips/lib/bswapdi.c
@@ -0,0 +1,15 @@
+#include <linux/module.h>
+
+unsigned long long __bswapdi2(unsigned long long u)
+{
+ return (((u) & 0xff00000000000000ull) >> 56) |
+ (((u) & 0x00ff000000000000ull) >> 40) |
+ (((u) & 0x0000ff0000000000ull) >> 24) |
+ (((u) & 0x000000ff00000000ull) >> 8) |
+ (((u) & 0x00000000ff000000ull) << 8) |
+ (((u) & 0x0000000000ff0000ull) << 24) |
+ (((u) & 0x000000000000ff00ull) << 40) |
+ (((u) & 0x00000000000000ffull) << 56);
+}
+
+EXPORT_SYMBOL(__bswapdi2);
diff --git a/kernel/arch/mips/lib/bswapsi.c b/kernel/arch/mips/lib/bswapsi.c
new file mode 100644
index 000000000..2b302ff12
--- /dev/null
+++ b/kernel/arch/mips/lib/bswapsi.c
@@ -0,0 +1,11 @@
+#include <linux/module.h>
+
+unsigned int __bswapsi2(unsigned int u)
+{
+ return (((u) & 0xff000000) >> 24) |
+ (((u) & 0x00ff0000) >> 8) |
+ (((u) & 0x0000ff00) << 8) |
+ (((u) & 0x000000ff) << 24);
+}
+
+EXPORT_SYMBOL(__bswapsi2);
diff --git a/kernel/arch/mips/lib/dump_tlb.c b/kernel/arch/mips/lib/dump_tlb.c
index 32b9f21bf..92a37319e 100644
--- a/kernel/arch/mips/lib/dump_tlb.c
+++ b/kernel/arch/mips/lib/dump_tlb.c
@@ -7,11 +7,39 @@
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <asm/hazards.h>
#include <asm/mipsregs.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/tlbdebug.h>
+void dump_tlb_regs(void)
+{
+ const int field = 2 * sizeof(unsigned long);
+
+ pr_info("Index : %0x\n", read_c0_index());
+ pr_info("PageMask : %0x\n", read_c0_pagemask());
+ pr_info("EntryHi : %0*lx\n", field, read_c0_entryhi());
+ pr_info("EntryLo0 : %0*lx\n", field, read_c0_entrylo0());
+ pr_info("EntryLo1 : %0*lx\n", field, read_c0_entrylo1());
+ pr_info("Wired : %0x\n", read_c0_wired());
+ switch (current_cpu_type()) {
+ case CPU_R10000:
+ case CPU_R12000:
+ case CPU_R14000:
+ case CPU_R16000:
+ pr_info("FrameMask: %0x\n", read_c0_framemask());
+ break;
+ }
+ if (cpu_has_small_pages || cpu_has_rixi || cpu_has_xpa)
+ pr_info("PageGrain: %0x\n", read_c0_pagegrain());
+ if (cpu_has_htw) {
+ pr_info("PWField : %0*lx\n", field, read_c0_pwfield());
+ pr_info("PWSize : %0*lx\n", field, read_c0_pwsize());
+ pr_info("PWCtl : %0x\n", read_c0_pwctl());
+ }
+}
+
static inline const char *msk2str(unsigned int mask)
{
switch (mask) {
@@ -40,17 +68,20 @@ static inline const char *msk2str(unsigned int mask)
return "";
}
-#define BARRIER() \
- __asm__ __volatile__( \
- ".set\tnoreorder\n\t" \
- "nop;nop;nop;nop;nop;nop;nop\n\t" \
- ".set\treorder");
-
static void dump_tlb(int first, int last)
{
unsigned long s_entryhi, entryhi, asid;
- unsigned long long entrylo0, entrylo1;
+ unsigned long long entrylo0, entrylo1, pa;
unsigned int s_index, s_pagemask, pagemask, c0, c1, i;
+#ifdef CONFIG_32BIT
+ bool xpa = cpu_has_xpa && (read_c0_pagegrain() & PG_ELPA);
+ int pwidth = xpa ? 11 : 8;
+ int vwidth = 8;
+#else
+ bool xpa = false;
+ int pwidth = 11;
+ int vwidth = 11;
+#endif
s_pagemask = read_c0_pagemask();
s_entryhi = read_c0_entryhi();
@@ -59,46 +90,74 @@ static void dump_tlb(int first, int last)
for (i = first; i <= last; i++) {
write_c0_index(i);
- BARRIER();
+ mtc0_tlbr_hazard();
tlb_read();
- BARRIER();
+ tlb_read_hazard();
pagemask = read_c0_pagemask();
entryhi = read_c0_entryhi();
entrylo0 = read_c0_entrylo0();
entrylo1 = read_c0_entrylo1();
- /* Unused entries have a virtual address of CKSEG0. */
- if ((entryhi & ~0x1ffffUL) != CKSEG0
- && (entryhi & 0xff) == asid) {
-#ifdef CONFIG_32BIT
- int width = 8;
-#else
- int width = 11;
-#endif
- /*
- * Only print entries in use
- */
- printk("Index: %2d pgmask=%s ", i, msk2str(pagemask));
+ /* EHINV bit marks entire entry as invalid */
+ if (cpu_has_tlbinv && entryhi & MIPS_ENTRYHI_EHINV)
+ continue;
+ /*
+ * Prior to tlbinv, unused entries have a virtual address of
+ * CKSEG0.
+ */
+ if ((entryhi & ~0x1ffffUL) == CKSEG0)
+ continue;
+ /*
+ * ASID takes effect in absence of G (global) bit.
+ * We check both G bits, even though architecturally they should
+ * match one another, because some revisions of the SB1 core may
+ * leave only a single G bit set after a machine check exception
+ * due to duplicate TLB entry.
+ */
+ if (!((entrylo0 | entrylo1) & ENTRYLO_G) &&
+ (entryhi & 0xff) != asid)
+ continue;
+
+ /*
+ * Only print entries in use
+ */
+ printk("Index: %2d pgmask=%s ", i, msk2str(pagemask));
- c0 = (entrylo0 >> 3) & 7;
- c1 = (entrylo1 >> 3) & 7;
+ c0 = (entrylo0 & ENTRYLO_C) >> ENTRYLO_C_SHIFT;
+ c1 = (entrylo1 & ENTRYLO_C) >> ENTRYLO_C_SHIFT;
- printk("va=%0*lx asid=%02lx\n",
- width, (entryhi & ~0x1fffUL),
- entryhi & 0xff);
- printk("\t[pa=%0*llx c=%d d=%d v=%d g=%d] ",
- width,
- (entrylo0 << 6) & PAGE_MASK, c0,
- (entrylo0 & 4) ? 1 : 0,
- (entrylo0 & 2) ? 1 : 0,
- (entrylo0 & 1) ? 1 : 0);
- printk("[pa=%0*llx c=%d d=%d v=%d g=%d]\n",
- width,
- (entrylo1 << 6) & PAGE_MASK, c1,
- (entrylo1 & 4) ? 1 : 0,
- (entrylo1 & 2) ? 1 : 0,
- (entrylo1 & 1) ? 1 : 0);
- }
+ printk("va=%0*lx asid=%02lx\n",
+ vwidth, (entryhi & ~0x1fffUL),
+ entryhi & 0xff);
+ /* RI/XI are in awkward places, so mask them off separately */
+ pa = entrylo0 & ~(MIPS_ENTRYLO_RI | MIPS_ENTRYLO_XI);
+ if (xpa)
+ pa |= (unsigned long long)readx_c0_entrylo0() << 30;
+ pa = (pa << 6) & PAGE_MASK;
+ printk("\t[");
+ if (cpu_has_rixi)
+ printk("ri=%d xi=%d ",
+ (entrylo0 & MIPS_ENTRYLO_RI) ? 1 : 0,
+ (entrylo0 & MIPS_ENTRYLO_XI) ? 1 : 0);
+ printk("pa=%0*llx c=%d d=%d v=%d g=%d] [",
+ pwidth, pa, c0,
+ (entrylo0 & ENTRYLO_D) ? 1 : 0,
+ (entrylo0 & ENTRYLO_V) ? 1 : 0,
+ (entrylo0 & ENTRYLO_G) ? 1 : 0);
+ /* RI/XI are in awkward places, so mask them off separately */
+ pa = entrylo1 & ~(MIPS_ENTRYLO_RI | MIPS_ENTRYLO_XI);
+ if (xpa)
+ pa |= (unsigned long long)readx_c0_entrylo1() << 30;
+ pa = (pa << 6) & PAGE_MASK;
+ if (cpu_has_rixi)
+ printk("ri=%d xi=%d ",
+ (entrylo1 & MIPS_ENTRYLO_RI) ? 1 : 0,
+ (entrylo1 & MIPS_ENTRYLO_XI) ? 1 : 0);
+ printk("pa=%0*llx c=%d d=%d v=%d g=%d]\n",
+ pwidth, pa, c1,
+ (entrylo1 & ENTRYLO_D) ? 1 : 0,
+ (entrylo1 & ENTRYLO_V) ? 1 : 0,
+ (entrylo1 & ENTRYLO_G) ? 1 : 0);
}
printk("\n");
diff --git a/kernel/arch/mips/lib/memset.S b/kernel/arch/mips/lib/memset.S
index b8e63fd00..8f0019a2e 100644
--- a/kernel/arch/mips/lib/memset.S
+++ b/kernel/arch/mips/lib/memset.S
@@ -283,6 +283,8 @@ LEAF(memset)
1:
#ifndef CONFIG_EVA
FEXPORT(__bzero)
+#else
+FEXPORT(__bzero_kernel)
#endif
__BUILD_BZERO LEGACY_MODE
diff --git a/kernel/arch/mips/lib/r3k_dump_tlb.c b/kernel/arch/mips/lib/r3k_dump_tlb.c
index 975a13855..cfcbb5218 100644
--- a/kernel/arch/mips/lib/r3k_dump_tlb.c
+++ b/kernel/arch/mips/lib/r3k_dump_tlb.c
@@ -14,7 +14,16 @@
#include <asm/pgtable.h>
#include <asm/tlbdebug.h>
-extern int r3k_have_wired_reg; /* defined in tlb-r3k.c */
+extern int r3k_have_wired_reg;
+
+void dump_tlb_regs(void)
+{
+ pr_info("Index : %0x\n", read_c0_index());
+ pr_info("EntryHi : %0lx\n", read_c0_entryhi());
+ pr_info("EntryLo : %0lx\n", read_c0_entrylo0());
+ if (r3k_have_wired_reg)
+ pr_info("Wired : %0x\n", read_c0_wired());
+}
static void dump_tlb(int first, int last)
{
@@ -35,8 +44,9 @@ static void dump_tlb(int first, int last)
entrylo0 = read_c0_entrylo0();
/* Unused entries have a virtual address of KSEG0. */
- if ((entryhi & PAGE_MASK) != KSEG0
- && (entryhi & ASID_MASK) == asid) {
+ if ((entryhi & PAGE_MASK) != KSEG0 &&
+ (entrylo0 & R3K_ENTRYLO_G ||
+ (entryhi & ASID_MASK) == asid)) {
/*
* Only print entries in use
*/
@@ -47,10 +57,10 @@ static void dump_tlb(int first, int last)
entryhi & PAGE_MASK,
entryhi & ASID_MASK,
entrylo0 & PAGE_MASK,
- (entrylo0 & (1 << 11)) ? 1 : 0,
- (entrylo0 & (1 << 10)) ? 1 : 0,
- (entrylo0 & (1 << 9)) ? 1 : 0,
- (entrylo0 & (1 << 8)) ? 1 : 0);
+ (entrylo0 & R3K_ENTRYLO_N) ? 1 : 0,
+ (entrylo0 & R3K_ENTRYLO_D) ? 1 : 0,
+ (entrylo0 & R3K_ENTRYLO_V) ? 1 : 0,
+ (entrylo0 & R3K_ENTRYLO_G) ? 1 : 0);
}
}
printk("\n");