*
* Synthesize TLB refill handlers at runtime.
*
- * Copyright (C) 2004,2005 by Thiemo Seufer
+ * Copyright (C) 2004,2005,2006 by Thiemo Seufer
+ * Copyright (C) 2005 Maciej W. Rozycki
+ * Copyright (C) 2006 Ralf Baechle (ralf@linux-mips.org)
+ *
+ * ... and the days got worse and worse and now you see
+ * I've gone completly out of my mind.
+ *
+ * They're coming to take me a away haha
+ * they're coming to take me a away hoho hihi haha
+ * to the funny farm where code is beautiful all the time ...
+ *
+ * (Condolences to Napoleon XIV)
*/
#include <stdarg.h>
-#include <linux/config.h>
#include <linux/mm.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <asm/smp.h>
#include <asm/war.h>
-/* #define DEBUG_TLB */
-
static __init int __attribute__((unused)) r45k_bvahwbug(void)
{
/* XXX: We should probe for the presence of this bug, but we don't. */
BIMM = 0x040,
JIMM = 0x080,
FUNC = 0x100,
+ SET = 0x200
};
#define OP_MASK 0x2f
#define JIMM_SH 0
#define FUNC_MASK 0x2f
#define FUNC_SH 0
+#define SET_MASK 0x7
+#define SET_SH 0
enum opcode {
insn_invalid,
{ insn_bne, M(bne_op,0,0,0,0,0), RS | RT | BIMM },
{ insn_daddiu, M(daddiu_op,0,0,0,0,0), RS | RT | SIMM },
{ insn_daddu, M(spec_op,0,0,0,0,daddu_op), RS | RT | RD },
- { insn_dmfc0, M(cop0_op,dmfc_op,0,0,0,0), RT | RD },
- { insn_dmtc0, M(cop0_op,dmtc_op,0,0,0,0), RT | RD },
+ { insn_dmfc0, M(cop0_op,dmfc_op,0,0,0,0), RT | RD | SET},
+ { insn_dmtc0, M(cop0_op,dmtc_op,0,0,0,0), RT | RD | SET},
{ insn_dsll, M(spec_op,0,0,0,0,dsll_op), RT | RD | RE },
{ insn_dsll32, M(spec_op,0,0,0,0,dsll32_op), RT | RD | RE },
{ insn_dsra, M(spec_op,0,0,0,0,dsra_op), RT | RD | RE },
{ insn_lld, M(lld_op,0,0,0,0,0), RS | RT | SIMM },
{ insn_lui, M(lui_op,0,0,0,0,0), RT | SIMM },
{ insn_lw, M(lw_op,0,0,0,0,0), RS | RT | SIMM },
- { insn_mfc0, M(cop0_op,mfc_op,0,0,0,0), RT | RD },
- { insn_mtc0, M(cop0_op,mtc_op,0,0,0,0), RT | RD },
+ { insn_mfc0, M(cop0_op,mfc_op,0,0,0,0), RT | RD | SET},
+ { insn_mtc0, M(cop0_op,mtc_op,0,0,0,0), RT | RD | SET},
{ insn_ori, M(ori_op,0,0,0,0,0), RS | RT | UIMM },
{ insn_rfe, M(cop0_op,cop_op,0,0,0,rfe_op), 0 },
{ insn_sc, M(sc_op,0,0,0,0,0), RS | RT | SIMM },
return arg & FUNC_MASK;
}
+static __init u32 build_set(u32 arg)
+{
+ if (arg & ~SET_MASK)
+ printk(KERN_WARNING "TLB synthesizer field overflow\n");
+
+ return arg & SET_MASK;
+}
+
/*
* The order of opcode arguments is implicitly left to right,
* starting with RS and ending with FUNC or IMM.
if (ip->fields & BIMM) op |= build_bimm(va_arg(ap, s32));
if (ip->fields & JIMM) op |= build_jimm(va_arg(ap, u32));
if (ip->fields & FUNC) op |= build_func(va_arg(ap, u32));
+ if (ip->fields & SET) op |= build_set(va_arg(ap, u32));
va_end(ap);
**buf = op;
}
#define I_u1u2u3(op) \
- static inline void i##op(u32 **buf, unsigned int a, \
+ static inline void __init i##op(u32 **buf, unsigned int a, \
unsigned int b, unsigned int c) \
{ \
build_insn(buf, insn##op, a, b, c); \
}
#define I_u2u1u3(op) \
- static inline void i##op(u32 **buf, unsigned int a, \
+ static inline void __init i##op(u32 **buf, unsigned int a, \
unsigned int b, unsigned int c) \
{ \
build_insn(buf, insn##op, b, a, c); \
}
#define I_u3u1u2(op) \
- static inline void i##op(u32 **buf, unsigned int a, \
+ static inline void __init i##op(u32 **buf, unsigned int a, \
unsigned int b, unsigned int c) \
{ \
build_insn(buf, insn##op, b, c, a); \
}
#define I_u1u2s3(op) \
- static inline void i##op(u32 **buf, unsigned int a, \
+ static inline void __init i##op(u32 **buf, unsigned int a, \
unsigned int b, signed int c) \
{ \
build_insn(buf, insn##op, a, b, c); \
}
#define I_u2s3u1(op) \
- static inline void i##op(u32 **buf, unsigned int a, \
+ static inline void __init i##op(u32 **buf, unsigned int a, \
signed int b, unsigned int c) \
{ \
build_insn(buf, insn##op, c, a, b); \
}
#define I_u2u1s3(op) \
- static inline void i##op(u32 **buf, unsigned int a, \
+ static inline void __init i##op(u32 **buf, unsigned int a, \
unsigned int b, signed int c) \
{ \
build_insn(buf, insn##op, b, a, c); \
}
#define I_u1u2(op) \
- static inline void i##op(u32 **buf, unsigned int a, \
+ static inline void __init i##op(u32 **buf, unsigned int a, \
unsigned int b) \
{ \
build_insn(buf, insn##op, a, b); \
}
#define I_u1s2(op) \
- static inline void i##op(u32 **buf, unsigned int a, \
+ static inline void __init i##op(u32 **buf, unsigned int a, \
signed int b) \
{ \
build_insn(buf, insn##op, a, b); \
}
#define I_u1(op) \
- static inline void i##op(u32 **buf, unsigned int a) \
+ static inline void __init i##op(u32 **buf, unsigned int a) \
{ \
build_insn(buf, insn##op, a); \
}
#define I_0(op) \
- static inline void i##op(u32 **buf) \
+ static inline void __init i##op(u32 **buf) \
{ \
build_insn(buf, insn##op); \
}
I_u1s2(_bltz);
I_u1s2(_bltzl);
I_u1u2s3(_bne);
-I_u1u2(_dmfc0);
-I_u1u2(_dmtc0);
+I_u1u2u3(_dmfc0);
+I_u1u2u3(_dmtc0);
I_u2u1s3(_daddiu);
I_u3u1u2(_daddu);
I_u2u1u3(_dsll);
I_u2s3u1(_lld);
I_u1s2(_lui);
I_u2s3u1(_lw);
-I_u1u2(_mfc0);
-I_u1u2(_mtc0);
+I_u1u2u3(_mfc0);
+I_u1u2u3(_mtc0);
I_u2u1u3(_ori);
I_0(_rfe);
I_u2s3u1(_sc);
label_invalid,
label_second_part,
label_leave,
+#ifdef MODULE_START
+ label_module_alloc,
+#endif
label_vmalloc,
label_vmalloc_done,
label_tlbw_hazard,
label_nopage_tlbm,
label_smp_pgtable_change,
label_r3000_write_probe_fail,
- label_r3000_write_probe_ok
};
struct label {
L_LA(_second_part)
L_LA(_leave)
+#ifdef MODULE_START
+L_LA(_module_alloc)
+#endif
L_LA(_vmalloc)
L_LA(_vmalloc_done)
L_LA(_tlbw_hazard)
L_LA(_nopage_tlbm)
L_LA(_smp_pgtable_change)
L_LA(_r3000_write_probe_fail)
-L_LA(_r3000_write_probe_ok)
/* convenience macros for instructions */
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
# define i_LW(buf, rs, rt, off) i_ld(buf, rs, rt, off)
# define i_SW(buf, rs, rt, off) i_sd(buf, rs, rt, off)
# define i_SLL(buf, rs, rt, sh) i_dsll(buf, rs, rt, sh)
# define i_SRA(buf, rs, rt, sh) i_dsra(buf, rs, rt, sh)
# define i_SRL(buf, rs, rt, sh) i_dsrl(buf, rs, rt, sh)
-# define i_MFC0(buf, rt, rd) i_dmfc0(buf, rt, rd)
-# define i_MTC0(buf, rt, rd) i_dmtc0(buf, rt, rd)
+# define i_MFC0(buf, rt, rd...) i_dmfc0(buf, rt, rd)
+# define i_MTC0(buf, rt, rd...) i_dmtc0(buf, rt, rd)
# define i_ADDIU(buf, rs, rt, val) i_daddiu(buf, rs, rt, val)
# define i_ADDU(buf, rs, rt, rd) i_daddu(buf, rs, rt, rd)
# define i_SUBU(buf, rs, rt, rd) i_dsubu(buf, rs, rt, rd)
# define i_SLL(buf, rs, rt, sh) i_sll(buf, rs, rt, sh)
# define i_SRA(buf, rs, rt, sh) i_sra(buf, rs, rt, sh)
# define i_SRL(buf, rs, rt, sh) i_srl(buf, rs, rt, sh)
-# define i_MFC0(buf, rt, rd) i_mfc0(buf, rt, rd)
-# define i_MTC0(buf, rt, rd) i_mtc0(buf, rt, rd)
+# define i_MFC0(buf, rt, rd...) i_mfc0(buf, rt, rd)
+# define i_MTC0(buf, rt, rd...) i_mtc0(buf, rt, rd)
# define i_ADDIU(buf, rs, rt, val) i_addiu(buf, rs, rt, val)
# define i_ADDU(buf, rs, rt, rd) i_addu(buf, rs, rt, rd)
# define i_SUBU(buf, rs, rt, rd) i_subu(buf, rs, rt, rd)
#define i_ssnop(buf) i_sll(buf, 0, 0, 1)
#define i_ehb(buf) i_sll(buf, 0, 0, 3)
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
static __init int __attribute__((unused)) in_compat_space_p(long addr)
{
/* Is this address in 32bit compat space? */
- return (((addr) & 0xffffffff00000000) == 0xffffffff00000000);
+ return (((addr) & 0xffffffff00000000L) == 0xffffffff00000000L);
}
static __init int __attribute__((unused)) rel_highest(long val)
static __init void i_LA_mostly(u32 **buf, unsigned int rs, long addr)
{
-#if CONFIG_MIPS64
+#ifdef CONFIG_64BIT
if (!in_compat_space_p(addr)) {
i_lui(buf, rs, rel_highest(addr));
if (rel_higher(addr))
}
/* convenience functions for labeled branches */
-static void __attribute__((unused)) il_bltz(u32 **p, struct reloc **r,
- unsigned int reg, enum label_id l)
+static void __init __attribute__((unused))
+ il_bltz(u32 **p, struct reloc **r, unsigned int reg, enum label_id l)
{
r_mips_pc16(r, *p, l);
i_bltz(p, reg, 0);
}
-static void __attribute__((unused)) il_b(u32 **p, struct reloc **r,
+static void __init __attribute__((unused)) il_b(u32 **p, struct reloc **r,
enum label_id l)
{
r_mips_pc16(r, *p, l);
i_b(p, 0);
}
-static void il_beqz(u32 **p, struct reloc **r, unsigned int reg,
+static void __init il_beqz(u32 **p, struct reloc **r, unsigned int reg,
enum label_id l)
{
r_mips_pc16(r, *p, l);
i_beqz(p, reg, 0);
}
-static void __attribute__((unused))
+static void __init __attribute__((unused))
il_beqzl(u32 **p, struct reloc **r, unsigned int reg, enum label_id l)
{
r_mips_pc16(r, *p, l);
i_beqzl(p, reg, 0);
}
-static void il_bnez(u32 **p, struct reloc **r, unsigned int reg,
+static void __init il_bnez(u32 **p, struct reloc **r, unsigned int reg,
enum label_id l)
{
r_mips_pc16(r, *p, l);
i_bnez(p, reg, 0);
}
-static void il_bgezl(u32 **p, struct reloc **r, unsigned int reg,
+static void __init il_bgezl(u32 **p, struct reloc **r, unsigned int reg,
enum label_id l)
{
r_mips_pc16(r, *p, l);
i_bgezl(p, reg, 0);
}
+static void __init __attribute__((unused))
+il_bgez(u32 **p, struct reloc **r, unsigned int reg, enum label_id l)
+{
+ r_mips_pc16(r, *p, l);
+ i_bgez(p, reg, 0);
+}
+
/* The only general purpose registers allowed in TLB handlers. */
#define K0 26
#define K1 27
/* Some CP0 registers */
-#define C0_INDEX 0
-#define C0_ENTRYLO0 2
-#define C0_ENTRYLO1 3
-#define C0_CONTEXT 4
-#define C0_BADVADDR 8
-#define C0_ENTRYHI 10
-#define C0_EPC 14
-#define C0_XCONTEXT 20
-
-#ifdef CONFIG_MIPS64
+#define C0_INDEX 0, 0
+#define C0_ENTRYLO0 2, 0
+#define C0_TCBIND 2, 2
+#define C0_ENTRYLO1 3, 0
+#define C0_CONTEXT 4, 0
+#define C0_BADVADDR 8, 0
+#define C0_ENTRYHI 10, 0
+#define C0_EPC 14, 0
+#define C0_XCONTEXT 20, 0
+
+#ifdef CONFIG_64BIT
# define GET_CONTEXT(buf, reg) i_MFC0(buf, reg, C0_XCONTEXT)
#else
# define GET_CONTEXT(buf, reg) i_MFC0(buf, reg, C0_CONTEXT)
{
long pgdc = (long)pgd_current;
u32 *p;
+ int i;
memset(tlb_handler, 0, sizeof(tlb_handler));
p = tlb_handler;
if (p > tlb_handler + 32)
panic("TLB refill handler space exceeded");
- printk("Synthesized TLB handler (%u instructions).\n",
- (unsigned int)(p - tlb_handler));
-#ifdef DEBUG_TLB
- {
- int i;
+ pr_info("Synthesized TLB refill handler (%u instructions).\n",
+ (unsigned int)(p - tlb_handler));
- for (i = 0; i < (p - tlb_handler); i++)
- printk("%08x\n", tlb_handler[i]);
- }
-#endif
+ pr_debug("\t.set push\n");
+ pr_debug("\t.set noreorder\n");
+ for (i = 0; i < (p - tlb_handler); i++)
+ pr_debug("\t.word 0x%08x\n", tlb_handler[i]);
+ pr_debug("\t.set pop\n");
- memcpy((void *)CAC_BASE, tlb_handler, 0x80);
- flush_icache_range(CAC_BASE, CAC_BASE + 0x80);
+ memcpy((void *)ebase, tlb_handler, 0x80);
}
/*
static __init void __attribute__((unused)) build_tlb_probe_entry(u32 **p)
{
switch (current_cpu_data.cputype) {
+ /* Found by experiment: R4600 v2.0 needs this, too. */
+ case CPU_R4600:
case CPU_R5000:
case CPU_R5000A:
case CPU_NEVADA:
case CPU_R4700:
case CPU_R5000:
case CPU_R5000A:
+ i_nop(p);
+ tlbw(p);
+ i_nop(p);
+ break;
+
+ case CPU_R4300:
case CPU_5KC:
case CPU_TX49XX:
case CPU_AU1000:
case CPU_AU1100:
case CPU_AU1500:
case CPU_AU1550:
+ case CPU_AU1200:
+ case CPU_PR4450:
i_nop(p);
tlbw(p);
break;
case CPU_R10000:
case CPU_R12000:
+ case CPU_R14000:
case CPU_4KC:
case CPU_SB1:
+ case CPU_SB1A:
case CPU_4KSC:
case CPU_20KC:
case CPU_25KF:
case CPU_4KEC:
case CPU_24K:
+ case CPU_34K:
+ case CPU_74K:
i_ehb(p);
tlbw(p);
break;
case CPU_VR4131:
case CPU_VR4133:
+ case CPU_R5432:
i_nop(p);
i_nop(p);
tlbw(p);
}
}
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
/*
* TMP and PTR are scratch.
* TMP will be clobbered, PTR will hold the pmd entry.
* The vmalloc handling is not in the hotpath.
*/
i_dmfc0(p, tmp, C0_BADVADDR);
+#ifdef MODULE_START
+ il_bltz(p, r, tmp, label_module_alloc);
+#else
il_bltz(p, r, tmp, label_vmalloc);
+#endif
/* No i_nop needed here, since the next insn doesn't touch TMP. */
#ifdef CONFIG_SMP
+# ifdef CONFIG_MIPS_MT_SMTC
+ /*
+ * SMTC uses TCBind value as "CPU" index
+ */
+ i_mfc0(p, ptr, C0_TCBIND);
+ i_dsrl(p, ptr, ptr, 19);
+# else
/*
- * 64 bit SMP has the lower part of &pgd_current[smp_processor_id()]
+ * 64 bit SMP running in XKPHYS has smp_processor_id() << 3
* stored in CONTEXT.
*/
- if (in_compat_space_p(pgdc)) {
- i_dmfc0(p, ptr, C0_CONTEXT);
- i_dsra(p, ptr, ptr, 23);
- i_ld(p, ptr, 0, ptr);
- } else {
-#ifdef CONFIG_BUILD_ELF64
- i_dmfc0(p, ptr, C0_CONTEXT);
- i_dsrl(p, ptr, ptr, 23);
- i_dsll(p, ptr, ptr, 3);
- i_LA_mostly(p, tmp, pgdc);
- i_daddu(p, ptr, ptr, tmp);
- i_dmfc0(p, tmp, C0_BADVADDR);
- i_ld(p, ptr, rel_lo(pgdc), ptr);
-#else
- i_dmfc0(p, ptr, C0_CONTEXT);
- i_lui(p, tmp, rel_highest(pgdc));
- i_dsll(p, ptr, ptr, 9);
- i_daddiu(p, tmp, tmp, rel_higher(pgdc));
- i_dsrl32(p, ptr, ptr, 0);
- i_and(p, ptr, ptr, tmp);
- i_dmfc0(p, tmp, C0_BADVADDR);
- i_ld(p, ptr, 0, ptr);
+ i_dmfc0(p, ptr, C0_CONTEXT);
+ i_dsrl(p, ptr, ptr, 23);
#endif
- }
+ i_LA_mostly(p, tmp, pgdc);
+ i_daddu(p, ptr, ptr, tmp);
+ i_dmfc0(p, tmp, C0_BADVADDR);
+ i_ld(p, ptr, rel_lo(pgdc), ptr);
#else
i_LA_mostly(p, ptr, pgdc);
i_ld(p, ptr, rel_lo(pgdc), ptr);
#endif
l_vmalloc_done(l, *p);
- i_dsrl(p, tmp, tmp, PGDIR_SHIFT-3); /* get pgd offset in bytes */
+
+ if (PGDIR_SHIFT - 3 < 32) /* get pgd offset in bytes */
+ i_dsrl(p, tmp, tmp, PGDIR_SHIFT-3);
+ else
+ i_dsrl32(p, tmp, tmp, PGDIR_SHIFT - 3 - 32);
+
i_andi(p, tmp, tmp, (PTRS_PER_PGD - 1)<<3);
i_daddu(p, ptr, ptr, tmp); /* add in pgd offset */
i_dmfc0(p, tmp, C0_BADVADDR); /* get faulting address */
{
long swpd = (long)swapper_pg_dir;
+#ifdef MODULE_START
+ long modd = (long)module_pg_dir;
+
+ l_module_alloc(l, *p);
+ /*
+ * Assumption:
+ * VMALLOC_START >= 0xc000000000000000UL
+ * MODULE_START >= 0xe000000000000000UL
+ */
+ i_SLL(p, ptr, bvaddr, 2);
+ il_bgez(p, r, ptr, label_vmalloc);
+
+ if (in_compat_space_p(MODULE_START) && !rel_lo(MODULE_START)) {
+ i_lui(p, ptr, rel_hi(MODULE_START)); /* delay slot */
+ } else {
+ /* unlikely configuration */
+ i_nop(p); /* delay slot */
+ i_LA(p, ptr, MODULE_START);
+ }
+ i_dsubu(p, bvaddr, bvaddr, ptr);
+
+ if (in_compat_space_p(modd) && !rel_lo(modd)) {
+ il_b(p, r, label_vmalloc_done);
+ i_lui(p, ptr, rel_hi(modd));
+ } else {
+ i_LA_mostly(p, ptr, modd);
+ il_b(p, r, label_vmalloc_done);
+ i_daddiu(p, ptr, ptr, rel_lo(modd));
+ }
+
+ l_vmalloc(l, *p);
+ if (in_compat_space_p(MODULE_START) && !rel_lo(MODULE_START) &&
+ MODULE_START << 32 == VMALLOC_START)
+ i_dsll32(p, ptr, ptr, 0); /* typical case */
+ else
+ i_LA(p, ptr, VMALLOC_START);
+#else
l_vmalloc(l, *p);
i_LA(p, ptr, VMALLOC_START);
+#endif
i_dsubu(p, bvaddr, bvaddr, ptr);
if (in_compat_space_p(swpd) && !rel_lo(swpd)) {
}
}
-#else /* !CONFIG_MIPS64 */
+#else /* !CONFIG_64BIT */
/*
* TMP and PTR are scratch.
/* 32 bit SMP has smp_processor_id() stored in CONTEXT. */
#ifdef CONFIG_SMP
+#ifdef CONFIG_MIPS_MT_SMTC
+ /*
+ * SMTC uses TCBind value as "CPU" index
+ */
+ i_mfc0(p, ptr, C0_TCBIND);
+ i_LA_mostly(p, tmp, pgdc);
+ i_srl(p, ptr, ptr, 19);
+#else
+ /*
+ * smp_processor_id() << 3 is stored in CONTEXT.
+ */
i_mfc0(p, ptr, C0_CONTEXT);
i_LA_mostly(p, tmp, pgdc);
i_srl(p, ptr, ptr, 23);
- i_sll(p, ptr, ptr, 2);
+#endif
i_addu(p, ptr, tmp, ptr);
#else
i_LA_mostly(p, ptr, pgdc);
i_addu(p, ptr, ptr, tmp); /* add in pgd offset */
}
-#endif /* !CONFIG_MIPS64 */
+#endif /* !CONFIG_64BIT */
static __init void build_adjust_context(u32 **p, unsigned int ctx)
{
- unsigned int shift = 4 - (PTE_T_LOG2 + 1);
+ unsigned int shift = 4 - (PTE_T_LOG2 + 1) + PAGE_SHIFT - 12;
unsigned int mask = (PTRS_PER_PTE / 2 - 1) << (PTE_T_LOG2 + 1);
switch (current_cpu_data.cputype) {
struct reloc *r = relocs;
u32 *f;
unsigned int final_len;
+ int i;
memset(tlb_handler, 0, sizeof(tlb_handler));
memset(labels, 0, sizeof(labels));
/* No need for i_nop */
}
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
build_get_pmde64(&p, &l, &r, K0, K1); /* get pmd in K1 */
#else
build_get_pgde32(&p, K0, K1); /* get pgd in K1 */
l_leave(&l, p);
i_eret(&p); /* return from trap */
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
build_get_pgd_vmalloc64(&p, &l, &r, K0, K1);
#endif
* Overflow check: For the 64bit handler, we need at least one
* free instruction slot for the wrap-around branch. In worst
* case, if the intended insertion point is a delay slot, we
- * need three, with the the second nop'ed and the third being
+ * need three, with the second nop'ed and the third being
* unused.
*/
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
if ((p - tlb_handler) > 64)
panic("TLB refill handler space exceeded");
#else
/*
* Now fold the handler in the TLB refill handler space.
*/
-#ifdef CONFIG_MIPS32
+#ifdef CONFIG_32BIT
f = final_handler;
/* Simplest case, just copy the handler. */
copy_handler(relocs, labels, tlb_handler, p, f);
final_len = p - tlb_handler;
-#else /* CONFIG_MIPS64 */
+#else /* CONFIG_64BIT */
f = final_handler + 32;
if ((p - tlb_handler) <= 32) {
/* Just copy the handler. */
copy_handler(relocs, labels, split, p, final_handler);
final_len = (f - (final_handler + 32)) + (p - split);
}
-#endif /* CONFIG_MIPS64 */
+#endif /* CONFIG_64BIT */
resolve_relocs(relocs, labels);
- printk("Synthesized TLB refill handler (%u instructions).\n",
- final_len);
+ pr_info("Synthesized TLB refill handler (%u instructions).\n",
+ final_len);
-#ifdef DEBUG_TLB
- {
- int i;
-
- for (i = 0; i < 64; i++)
- printk("%08x\n", final_handler[i]);
- }
-#endif
+ f = final_handler;
+#ifdef CONFIG_64BIT
+ if (final_len > 32)
+ final_len = 64;
+ else
+ f = final_handler + 32;
+#endif /* CONFIG_64BIT */
+ pr_debug("\t.set push\n");
+ pr_debug("\t.set noreorder\n");
+ for (i = 0; i < final_len; i++)
+ pr_debug("\t.word 0x%08x\n", f[i]);
+ pr_debug("\t.set pop\n");
- memcpy((void *)CAC_BASE, final_handler, 0x100);
- flush_icache_range(CAC_BASE, CAC_BASE + 0x100);
+ memcpy((void *)ebase, final_handler, 0x100);
}
/*
u32 __tlb_handler_align handle_tlbm[FASTPATH_SIZE];
static void __init
-iPTE_LW(u32 **p, struct label **l, unsigned int pte, int offset,
- unsigned int ptr)
+iPTE_LW(u32 **p, struct label **l, unsigned int pte, unsigned int ptr)
{
#ifdef CONFIG_SMP
# ifdef CONFIG_64BIT_PHYS_ADDR
if (cpu_has_64bits)
- i_lld(p, pte, offset, ptr);
+ i_lld(p, pte, 0, ptr);
else
# endif
- i_LL(p, pte, offset, ptr);
+ i_LL(p, pte, 0, ptr);
#else
# ifdef CONFIG_64BIT_PHYS_ADDR
if (cpu_has_64bits)
- i_ld(p, pte, offset, ptr);
+ i_ld(p, pte, 0, ptr);
else
# endif
- i_LW(p, pte, offset, ptr);
+ i_LW(p, pte, 0, ptr);
#endif
}
static void __init
-iPTE_SW(u32 **p, struct reloc **r, unsigned int pte, int offset,
- unsigned int ptr)
+iPTE_SW(u32 **p, struct reloc **r, unsigned int pte, unsigned int ptr,
+ unsigned int mode)
{
+#ifdef CONFIG_64BIT_PHYS_ADDR
+ unsigned int hwmode = mode & (_PAGE_VALID | _PAGE_DIRTY);
+#endif
+
+ i_ori(p, pte, pte, mode);
#ifdef CONFIG_SMP
# ifdef CONFIG_64BIT_PHYS_ADDR
if (cpu_has_64bits)
- i_scd(p, pte, offset, ptr);
+ i_scd(p, pte, 0, ptr);
else
# endif
- i_SC(p, pte, offset, ptr);
+ i_SC(p, pte, 0, ptr);
if (r10000_llsc_war())
il_beqzl(p, r, pte, label_smp_pgtable_change);
if (!cpu_has_64bits) {
/* no i_nop needed */
i_ll(p, pte, sizeof(pte_t) / 2, ptr);
- i_ori(p, pte, pte, _PAGE_VALID);
+ i_ori(p, pte, pte, hwmode);
i_sc(p, pte, sizeof(pte_t) / 2, ptr);
il_beqz(p, r, pte, label_smp_pgtable_change);
/* no i_nop needed */
#else
# ifdef CONFIG_64BIT_PHYS_ADDR
if (cpu_has_64bits)
- i_sd(p, pte, offset, ptr);
+ i_sd(p, pte, 0, ptr);
else
# endif
- i_SW(p, pte, offset, ptr);
+ i_SW(p, pte, 0, ptr);
# ifdef CONFIG_64BIT_PHYS_ADDR
if (!cpu_has_64bits) {
i_lw(p, pte, sizeof(pte_t) / 2, ptr);
- i_ori(p, pte, pte, _PAGE_VALID);
+ i_ori(p, pte, pte, hwmode);
i_sw(p, pte, sizeof(pte_t) / 2, ptr);
i_lw(p, pte, 0, ptr);
}
i_andi(p, pte, pte, _PAGE_PRESENT | _PAGE_READ);
i_xori(p, pte, pte, _PAGE_PRESENT | _PAGE_READ);
il_bnez(p, r, pte, lid);
- iPTE_LW(p, l, pte, 0, ptr);
+ iPTE_LW(p, l, pte, ptr);
}
/* Make PTE valid, store result in PTR. */
build_make_valid(u32 **p, struct reloc **r, unsigned int pte,
unsigned int ptr)
{
- i_ori(p, pte, pte, _PAGE_VALID | _PAGE_ACCESSED);
- iPTE_SW(p, r, pte, 0, ptr);
+ unsigned int mode = _PAGE_VALID | _PAGE_ACCESSED;
+
+ iPTE_SW(p, r, pte, ptr, mode);
}
/*
i_andi(p, pte, pte, _PAGE_PRESENT | _PAGE_WRITE);
i_xori(p, pte, pte, _PAGE_PRESENT | _PAGE_WRITE);
il_bnez(p, r, pte, lid);
- iPTE_LW(p, l, pte, 0, ptr);
+ iPTE_LW(p, l, pte, ptr);
}
/* Make PTE writable, update software status bits as well, then store
build_make_write(u32 **p, struct reloc **r, unsigned int pte,
unsigned int ptr)
{
- i_ori(p, pte, pte,
- _PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_VALID | _PAGE_DIRTY);
- iPTE_SW(p, r, pte, 0, ptr);
+ unsigned int mode = (_PAGE_ACCESSED | _PAGE_MODIFIED | _PAGE_VALID
+ | _PAGE_DIRTY);
+
+ iPTE_SW(p, r, pte, ptr, mode);
}
/*
{
i_andi(p, pte, pte, _PAGE_WRITE);
il_beqz(p, r, pte, lid);
- iPTE_LW(p, l, pte, 0, ptr);
+ iPTE_LW(p, l, pte, ptr);
}
/*
* R3000 style TLB load/store/modify handlers.
*/
-/* This places the pte in the page table at PTR into ENTRYLO0. */
+/*
+ * This places the pte into ENTRYLO0 and writes it with tlbwi.
+ * Then it returns.
+ */
static void __init
-build_r3000_pte_reload(u32 **p, unsigned int ptr)
+build_r3000_pte_reload_tlbwi(u32 **p, unsigned int pte, unsigned int tmp)
{
- i_lw(p, ptr, 0, ptr);
- i_nop(p); /* load delay */
- i_mtc0(p, ptr, C0_ENTRYLO0);
- i_nop(p); /* cp0 delay */
+ i_mtc0(p, pte, C0_ENTRYLO0); /* cp0 delay */
+ i_mfc0(p, tmp, C0_EPC); /* cp0 delay */
+ i_tlbwi(p);
+ i_jr(p, tmp);
+ i_rfe(p); /* branch delay */
}
/*
- * The index register may have the probe fail bit set,
- * because we would trap on access kseg2, i.e. without refill.
+ * This places the pte into ENTRYLO0 and writes it with tlbwi
+ * or tlbwr as appropriate. This is because the index register
+ * may have the probe fail bit set as a result of a trap on a
+ * kseg2 access, i.e. without refill. Then it returns.
*/
static void __init
-build_r3000_tlb_write(u32 **p, struct label **l, struct reloc **r,
- unsigned int tmp)
+build_r3000_tlb_reload_write(u32 **p, struct label **l, struct reloc **r,
+ unsigned int pte, unsigned int tmp)
{
i_mfc0(p, tmp, C0_INDEX);
- i_nop(p); /* cp0 delay */
- il_bltz(p, r, tmp, label_r3000_write_probe_fail);
- i_nop(p); /* branch delay */
- i_tlbwi(p);
- il_b(p, r, label_r3000_write_probe_ok);
- i_nop(p); /* branch delay */
+ i_mtc0(p, pte, C0_ENTRYLO0); /* cp0 delay */
+ il_bltz(p, r, tmp, label_r3000_write_probe_fail); /* cp0 delay */
+ i_mfc0(p, tmp, C0_EPC); /* branch delay */
+ i_tlbwi(p); /* cp0 delay */
+ i_jr(p, tmp);
+ i_rfe(p); /* branch delay */
l_r3000_write_probe_fail(l, *p);
- i_tlbwr(p);
- l_r3000_write_probe_ok(l, *p);
+ i_tlbwr(p); /* cp0 delay */
+ i_jr(p, tmp);
+ i_rfe(p); /* branch delay */
}
static void __init
i_andi(p, pte, pte, 0xffc); /* load delay */
i_addu(p, ptr, ptr, pte);
i_lw(p, pte, 0, ptr);
- i_nop(p); /* load delay */
- i_tlbp(p);
-}
-
-static void __init
-build_r3000_tlbchange_handler_tail(u32 **p, unsigned int tmp)
-{
- i_mfc0(p, tmp, C0_EPC);
- i_nop(p); /* cp0 delay */
- i_jr(p, tmp);
- i_rfe(p); /* branch delay */
+ i_tlbp(p); /* load delay */
}
static void __init build_r3000_tlb_load_handler(void)
u32 *p = handle_tlbl;
struct label *l = labels;
struct reloc *r = relocs;
+ int i;
memset(handle_tlbl, 0, sizeof(handle_tlbl));
memset(labels, 0, sizeof(labels));
build_r3000_tlbchange_handler_head(&p, K0, K1);
build_pte_present(&p, &l, &r, K0, K1, label_nopage_tlbl);
+ i_nop(&p); /* load delay */
build_make_valid(&p, &r, K0, K1);
- build_r3000_pte_reload(&p, K1);
- build_r3000_tlb_write(&p, &l, &r, K0);
- build_r3000_tlbchange_handler_tail(&p, K0);
+ build_r3000_tlb_reload_write(&p, &l, &r, K0, K1);
l_nopage_tlbl(&l, p);
i_j(&p, (unsigned long)tlb_do_page_fault_0 & 0x0fffffff);
panic("TLB load handler fastpath space exceeded");
resolve_relocs(relocs, labels);
- printk("Synthesized TLB load handler fastpath (%u instructions).\n",
- (unsigned int)(p - handle_tlbl));
+ pr_info("Synthesized TLB load handler fastpath (%u instructions).\n",
+ (unsigned int)(p - handle_tlbl));
-#ifdef DEBUG_TLB
- {
- int i;
-
- for (i = 0; i < FASTPATH_SIZE; i++)
- printk("%08x\n", handle_tlbl[i]);
- }
-#endif
-
- flush_icache_range((unsigned long)handle_tlbl,
- (unsigned long)handle_tlbl + FASTPATH_SIZE * sizeof(u32));
+ pr_debug("\t.set push\n");
+ pr_debug("\t.set noreorder\n");
+ for (i = 0; i < (p - handle_tlbl); i++)
+ pr_debug("\t.word 0x%08x\n", handle_tlbl[i]);
+ pr_debug("\t.set pop\n");
}
static void __init build_r3000_tlb_store_handler(void)
u32 *p = handle_tlbs;
struct label *l = labels;
struct reloc *r = relocs;
+ int i;
memset(handle_tlbs, 0, sizeof(handle_tlbs));
memset(labels, 0, sizeof(labels));
build_r3000_tlbchange_handler_head(&p, K0, K1);
build_pte_writable(&p, &l, &r, K0, K1, label_nopage_tlbs);
+ i_nop(&p); /* load delay */
build_make_write(&p, &r, K0, K1);
- build_r3000_pte_reload(&p, K1);
- build_r3000_tlb_write(&p, &l, &r, K0);
- build_r3000_tlbchange_handler_tail(&p, K0);
+ build_r3000_tlb_reload_write(&p, &l, &r, K0, K1);
l_nopage_tlbs(&l, p);
i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff);
panic("TLB store handler fastpath space exceeded");
resolve_relocs(relocs, labels);
- printk("Synthesized TLB store handler fastpath (%u instructions).\n",
- (unsigned int)(p - handle_tlbs));
-
-#ifdef DEBUG_TLB
- {
- int i;
+ pr_info("Synthesized TLB store handler fastpath (%u instructions).\n",
+ (unsigned int)(p - handle_tlbs));
- for (i = 0; i < FASTPATH_SIZE; i++)
- printk("%08x\n", handle_tlbs[i]);
- }
-#endif
-
- flush_icache_range((unsigned long)handle_tlbs,
- (unsigned long)handle_tlbs + FASTPATH_SIZE * sizeof(u32));
+ pr_debug("\t.set push\n");
+ pr_debug("\t.set noreorder\n");
+ for (i = 0; i < (p - handle_tlbs); i++)
+ pr_debug("\t.word 0x%08x\n", handle_tlbs[i]);
+ pr_debug("\t.set pop\n");
}
static void __init build_r3000_tlb_modify_handler(void)
u32 *p = handle_tlbm;
struct label *l = labels;
struct reloc *r = relocs;
+ int i;
memset(handle_tlbm, 0, sizeof(handle_tlbm));
memset(labels, 0, sizeof(labels));
build_r3000_tlbchange_handler_head(&p, K0, K1);
build_pte_modifiable(&p, &l, &r, K0, K1, label_nopage_tlbm);
+ i_nop(&p); /* load delay */
build_make_write(&p, &r, K0, K1);
- build_r3000_pte_reload(&p, K1);
- i_tlbwi(&p);
- build_r3000_tlbchange_handler_tail(&p, K0);
+ build_r3000_pte_reload_tlbwi(&p, K0, K1);
l_nopage_tlbm(&l, p);
i_j(&p, (unsigned long)tlb_do_page_fault_1 & 0x0fffffff);
panic("TLB modify handler fastpath space exceeded");
resolve_relocs(relocs, labels);
- printk("Synthesized TLB modify handler fastpath (%u instructions).\n",
- (unsigned int)(p - handle_tlbm));
-
-#ifdef DEBUG_TLB
- {
- int i;
-
- for (i = 0; i < FASTPATH_SIZE; i++)
- printk("%08x\n", handle_tlbm[i]);
- }
-#endif
+ pr_info("Synthesized TLB modify handler fastpath (%u instructions).\n",
+ (unsigned int)(p - handle_tlbm));
- flush_icache_range((unsigned long)handle_tlbm,
- (unsigned long)handle_tlbm + FASTPATH_SIZE * sizeof(u32));
+ pr_debug("\t.set push\n");
+ pr_debug("\t.set noreorder\n");
+ for (i = 0; i < (p - handle_tlbm); i++)
+ pr_debug("\t.word 0x%08x\n", handle_tlbm[i]);
+ pr_debug("\t.set pop\n");
}
/*
struct reloc **r, unsigned int pte,
unsigned int ptr)
{
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
build_get_pmde64(p, l, r, pte, ptr); /* get pmd in ptr */
#else
build_get_pgde32(p, pte, ptr); /* get pgd in ptr */
#ifdef CONFIG_SMP
l_smp_pgtable_change(l, *p);
# endif
- iPTE_LW(p, l, pte, 0, ptr); /* get even pte */
+ iPTE_LW(p, l, pte, ptr); /* get even pte */
build_tlb_probe_entry(p);
}
l_leave(l, *p);
i_eret(p); /* return from trap */
-#ifdef CONFIG_MIPS64
+#ifdef CONFIG_64BIT
build_get_pgd_vmalloc64(p, l, r, tmp, ptr);
#endif
}
u32 *p = handle_tlbl;
struct label *l = labels;
struct reloc *r = relocs;
+ int i;
memset(handle_tlbl, 0, sizeof(handle_tlbl));
memset(labels, 0, sizeof(labels));
panic("TLB load handler fastpath space exceeded");
resolve_relocs(relocs, labels);
- printk("Synthesized TLB load handler fastpath (%u instructions).\n",
- (unsigned int)(p - handle_tlbl));
-
-#ifdef DEBUG_TLB
- {
- int i;
-
- for (i = 0; i < FASTPATH_SIZE; i++)
- printk("%08x\n", handle_tlbl[i]);
- }
-#endif
+ pr_info("Synthesized TLB load handler fastpath (%u instructions).\n",
+ (unsigned int)(p - handle_tlbl));
- flush_icache_range((unsigned long)handle_tlbl,
- (unsigned long)handle_tlbl + FASTPATH_SIZE * sizeof(u32));
+ pr_debug("\t.set push\n");
+ pr_debug("\t.set noreorder\n");
+ for (i = 0; i < (p - handle_tlbl); i++)
+ pr_debug("\t.word 0x%08x\n", handle_tlbl[i]);
+ pr_debug("\t.set pop\n");
}
static void __init build_r4000_tlb_store_handler(void)
u32 *p = handle_tlbs;
struct label *l = labels;
struct reloc *r = relocs;
+ int i;
memset(handle_tlbs, 0, sizeof(handle_tlbs));
memset(labels, 0, sizeof(labels));
panic("TLB store handler fastpath space exceeded");
resolve_relocs(relocs, labels);
- printk("Synthesized TLB store handler fastpath (%u instructions).\n",
- (unsigned int)(p - handle_tlbs));
-
-#ifdef DEBUG_TLB
- {
- int i;
+ pr_info("Synthesized TLB store handler fastpath (%u instructions).\n",
+ (unsigned int)(p - handle_tlbs));
- for (i = 0; i < FASTPATH_SIZE; i++)
- printk("%08x\n", handle_tlbs[i]);
- }
-#endif
-
- flush_icache_range((unsigned long)handle_tlbs,
- (unsigned long)handle_tlbs + FASTPATH_SIZE * sizeof(u32));
+ pr_debug("\t.set push\n");
+ pr_debug("\t.set noreorder\n");
+ for (i = 0; i < (p - handle_tlbs); i++)
+ pr_debug("\t.word 0x%08x\n", handle_tlbs[i]);
+ pr_debug("\t.set pop\n");
}
static void __init build_r4000_tlb_modify_handler(void)
u32 *p = handle_tlbm;
struct label *l = labels;
struct reloc *r = relocs;
+ int i;
memset(handle_tlbm, 0, sizeof(handle_tlbm));
memset(labels, 0, sizeof(labels));
panic("TLB modify handler fastpath space exceeded");
resolve_relocs(relocs, labels);
- printk("Synthesized TLB modify handler fastpath (%u instructions).\n",
- (unsigned int)(p - handle_tlbm));
-
-#ifdef DEBUG_TLB
- {
- int i;
-
- for (i = 0; i < FASTPATH_SIZE; i++)
- printk("%08x\n", handle_tlbm[i]);
- }
-#endif
+ pr_info("Synthesized TLB modify handler fastpath (%u instructions).\n",
+ (unsigned int)(p - handle_tlbm));
- flush_icache_range((unsigned long)handle_tlbm,
- (unsigned long)handle_tlbm + FASTPATH_SIZE * sizeof(u32));
+ pr_debug("\t.set push\n");
+ pr_debug("\t.set noreorder\n");
+ for (i = 0; i < (p - handle_tlbm); i++)
+ pr_debug("\t.word 0x%08x\n", handle_tlbm[i]);
+ pr_debug("\t.set pop\n");
}
void __init build_tlb_refill_handler(void)
}
}
}
+
+void __init flush_tlb_handlers(void)
+{
+ flush_icache_range((unsigned long)handle_tlbl,
+ (unsigned long)handle_tlbl + sizeof(handle_tlbl));
+ flush_icache_range((unsigned long)handle_tlbs,
+ (unsigned long)handle_tlbs + sizeof(handle_tlbs));
+ flush_icache_range((unsigned long)handle_tlbm,
+ (unsigned long)handle_tlbm + sizeof(handle_tlbm));
+}
git://git.onelab.eu / linux-2.6.git / blobdiff