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Add support for a loongson2_subr.S. This is needed since that chip needs

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special handling to manually flush the ITLB on TLB updates.
This commit is contained in:
matt 2011-07-31 15:39:28 +00:00
parent e642dbad13
commit 30893a9102
10 changed files with 154 additions and 22 deletions
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5
sys/arch/mips/conf/files.mips
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@ -1,13 +1,13 @@
# $NetBSD: files.mips,v 1.70 2011/06/12 03:35:43 rmind Exp $
# $NetBSD: files.mips,v 1.71 2011/07/31 15:39:28 matt Exp $
#
defflag opt_cputype.h NOFPU FPEMUL
MIPS64_SB1
MIPS3_LOONGSON2F
ENABLE_MIPS_16KB_PAGE
MIPS64_XLP MIPS64_XLR MIPS64_XLS
# and the rest...
# MIPS1 MIPS2 MIPS3 MIPS4 MIPS5
# MIPS3_LOONGSON2
# MIPS32 MIPS32R2 MIPS64 MIPS64R2
# MIPS3_4100
# ENABLE_MIPS_4KB_PAGE
@ -27,6 +27,7 @@ file arch/mips/mips/mips32_subr.S mips32
file arch/mips/mips/mips32r2_subr.S mips32r2
file arch/mips/mips/mips64_subr.S mips64
file arch/mips/mips/mips64r2_subr.S mips64r2
file arch/mips/mips/loongson2_subr.S mips3_loongson2
file arch/mips/mips/sigcode.S
file arch/mips/mips/copy.S
file arch/mips/mips/lock_stubs_llsc.S multiprocessor

3
sys/arch/mips/mips/locore_mips3.S
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@ -1,4 +1,4 @@
/* $NetBSD: locore_mips3.S,v 1.100 2011/07/10 23:21:59 matt Exp $ */
/* $NetBSD: locore_mips3.S,v 1.101 2011/07/31 15:39:29 matt Exp $ */
/*
* Copyright (c) 1997 Jonathan Stone (hereinafter referred to as the author)
@ -151,6 +151,7 @@
*----------------------------------------------------------------------------
*/
LEAF(mips3_wbflush)
XLEAF(loongson2_wbflush)
XLEAF(mips32_wbflush)
XLEAF(mips32r2_wbflush)
XLEAF(mips64_wbflush)

15
sys/arch/mips/mips/loongson2_subr.S Normal file
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@ -0,0 +1,15 @@
/* $NetBSD: loongson2_subr.S,v 1.1 2011/07/31 15:39:29 matt Exp $ */
#undef MIPS1
/* #undef MIPS3 */
/* #undef MIPS3_LOONGSON2 */
#undef MIPS32
#undef MIPS32R2
#undef MIPS64
#undef MIPS64R2
#undef MIPS64_SB1
#undef MIPS64_XLP
#undef MIPS64_XLR
#undef MIPS64_XLS
#include <mips/mips/mipsX_subr.S>

3
sys/arch/mips/mips/mips32_subr.S
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@ -1,7 +1,8 @@
/* $NetBSD: mips32_subr.S,v 1.5 2011/03/15 07:39:22 matt Exp $ */
/* $NetBSD: mips32_subr.S,v 1.6 2011/07/31 15:39:29 matt Exp $ */
#undef MIPS1
#undef MIPS3
#undef MIPS3_LOONGSON2
/* #undef MIPS32 */
#undef MIPS32R2
#undef MIPS64

3
sys/arch/mips/mips/mips32r2_subr.S
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@ -1,7 +1,8 @@
/* $NetBSD: mips32r2_subr.S,v 1.1 2011/03/15 07:39:22 matt Exp $ */
/* $NetBSD: mips32r2_subr.S,v 1.2 2011/07/31 15:39:29 matt Exp $ */
#undef MIPS1
#undef MIPS3
#undef MIPS3_LOONGSON2
#undef MIPS32
/* #undef MIPS32R2 */
#undef MIPS64

3
sys/arch/mips/mips/mips3_subr.S
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@ -1,7 +1,8 @@
/* $NetBSD: mips3_subr.S,v 1.5 2011/03/15 07:39:22 matt Exp $ */
/* $NetBSD: mips3_subr.S,v 1.6 2011/07/31 15:39:29 matt Exp $ */
#undef MIPS1
/* #undef MIPS3 */
#undef MIPS3_LOONGSON2
#undef MIPS32
#undef MIPS32R2
#undef MIPS64

3
sys/arch/mips/mips/mips64_subr.S
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@ -1,7 +1,8 @@
/* $NetBSD: mips64_subr.S,v 1.5 2011/03/15 07:39:22 matt Exp $ */
/* $NetBSD: mips64_subr.S,v 1.6 2011/07/31 15:39:29 matt Exp $ */
#undef MIPS1
#undef MIPS3
#undef MIPS3_LOONGSON2
#undef MIPS32
#undef MIPS32R2
/* #undef MIPS64 */

3
sys/arch/mips/mips/mips64r2_subr.S
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@ -1,7 +1,8 @@
/* $NetBSD: mips64r2_subr.S,v 1.1 2011/03/15 07:39:22 matt Exp $ */
/* $NetBSD: mips64r2_subr.S,v 1.2 2011/07/31 15:39:29 matt Exp $ */
#undef MIPS1
#undef MIPS3
#undef MIPS3_LOONGSON2
#undef MIPS32
#undef MIPS32R2
#undef MIPS64

61
sys/arch/mips/mips/mipsX_subr.S
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@ -1,4 +1,4 @@
/* $NetBSD: mipsX_subr.S,v 1.50 2011/07/10 23:21:59 matt Exp $ */
/* $NetBSD: mipsX_subr.S,v 1.51 2011/07/31 15:39:29 matt Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
@ -228,7 +228,9 @@
* CPP function renaming macros.
*/
#if defined(MIPS3)
#if defined(MIPS3_LOONGSON2)
#define MIPSX(name) __CONCAT(loongson2_,name)
#elif defined(MIPS3)
#define MIPSX(name) __CONCAT(mips3_,name)
#endif
@ -1639,7 +1641,10 @@ LEAF_NOPROFILE(MIPSX(tlb_invalid_exception))
#endif
tlbwi # write TLB
COP0_SYNC
#ifdef MIPS3
#ifdef MIPS3_LOONGSON2
li k0, 4 # ugly
mtc0 k0, MIPS_COP_0_DIAG # invalidate ITLB
#elif defined(MIPS3)
nop
nop
#endif
@ -1671,7 +1676,10 @@ MIPSX(kern_tlbi_odd):
#endif
tlbwi # update TLB
COP0_SYNC
#ifdef MIPS3
#ifdef MIPS3_LOONGSON2
li k0, 4 # ugly
mtc0 k0, MIPS_COP_0_DIAG # invalidate ITLB
#elif defined(MIPS3)
nop
nop
#endif
@ -1753,7 +1761,10 @@ LEAF(MIPSX(tlb_update))
COP0_SYNC
tlbwi # update slot found
COP0_SYNC
#ifdef MIPS3
#ifdef MIPS3_LOONGSON2
li v0, 4 # ugly
mtc0 v0, MIPS_COP_0_DIAG # invalidate ITLB
#elif defined(MIPS3)
nop # required for QED5230
nop # required for QED5230
#endif
@ -1772,7 +1783,10 @@ LEAF(MIPSX(tlb_update))
COP0_SYNC
tlbwi # update slot found
COP0_SYNC
#ifdef MIPS3
#ifdef MIPS3_LOONGSON2
li v0, 4 # ugly
mtc0 v0, MIPS_COP_0_DIAG # invalidate ITLB
#elif defined(MIPS3)
nop # required for QED5230
nop # required for QED5230
#endif
@ -1890,7 +1904,10 @@ LEAF_NOPROFILE(MIPSX(tlb_invalidate_addr))
tlbwi
COP0_SYNC
#ifdef MIPS3
#ifdef MIPS3_LOONGSON2
li v0, 4 # ugly
mtc0 v0, MIPS_COP_0_DIAG # invalidate ITLB
#elif defined(MIPS3)
nop
nop
#endif
@ -1956,6 +1973,12 @@ LEAF_NOPROFILE(MIPSX(tlb_invalidate_asids))
_MFC0 t0, MIPS_COP_0_TLB_HI # restore PID.
mtc0 t3, MIPS_COP_0_TLB_PG_MASK # restore pgMask
COP0_SYNC
#ifdef MIPS3_LOONGSON2
li v0, 4 # ugly
mtc0 v0, MIPS_COP_0_DIAG # invalidate ITLB
#endif
mtc0 v1, MIPS_COP_0_STATUS # restore status register
JR_HB_RA # new ASID will be set soon
END(MIPSX(tlb_invalidate_asids))
@ -2005,6 +2028,12 @@ LEAF_NOPROFILE(MIPSX(tlb_invalidate_globals))
_MTC0 t0, MIPS_COP_0_TLB_HI # restore current ASID
mtc0 t3, MIPS_COP_0_TLB_PG_MASK # restore pgMask
COP0_SYNC
#ifdef MIPS3_LOONGSON2
li v0, 4 # ugly
mtc0 v0, MIPS_COP_0_DIAG # invalidate ITLB
#endif
mtc0 v1, MIPS_COP_0_STATUS # restore status register
JR_HB_RA
END(MIPSX(tlb_invalidate_globals))
@ -2047,6 +2076,12 @@ LEAF_NOPROFILE(MIPSX(tlb_invalidate_all))
_MTC0 t0, MIPS_COP_0_TLB_HI # restore ASID
mtc0 t2, MIPS_COP_0_TLB_PG_MASK # restore pgMask
COP0_SYNC
#ifdef MIPS3_LOONGSON2
li v0, 4 # ugly
mtc0 v0, MIPS_COP_0_DIAG # invalidate ITLB
#endif
mtc0 v1, MIPS_COP_0_STATUS # restore status register
JR_HB_RA
END(MIPSX(tlb_invalidate_all))
@ -2204,6 +2239,12 @@ LEAF(MIPSX(tlb_enter))
COP0_SYNC
_MTC0 ta1, MIPS_COP_0_TLB_HI # restore EntryHi
#ifdef MIPS3_LOONGSON2
li v0, 4 # ugly
mtc0 v0, MIPS_COP_0_DIAG # invalidate ITLB
#endif
JR_HB_RA
.set at
END(MIPSX(tlb_enter))
@ -2432,6 +2473,12 @@ LEAF(MIPSX(tlb_write_indexed))
_MTC0 t0, MIPS_COP_0_TLB_HI # Restore the PID.
mtc0 v0, MIPS_COP_0_TLB_PG_MASK # Restore page mask.
COP0_SYNC
#ifdef MIPS3_LOONGSON2
li v0, 4 # ugly
mtc0 v0, MIPS_COP_0_DIAG # invalidate ITLB
#endif
mtc0 v1, MIPS_COP_0_STATUS # Restore the status register
JR_HB_RA
END(MIPSX(tlb_write_indexed))

77
sys/arch/mips/mips/mips_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: mips_machdep.c,v 1.244 2011/06/14 05:30:40 matt Exp $ */
/* $NetBSD: mips_machdep.c,v 1.245 2011/07/31 15:39:29 matt Exp $ */
/*
* Copyright 2002 Wasabi Systems, Inc.
@ -112,7 +112,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: mips_machdep.c,v 1.244 2011/06/14 05:30:40 matt Exp $");
__KERNEL_RCSID(0, "$NetBSD: mips_machdep.c,v 1.245 2011/07/31 15:39:29 matt Exp $");
#define __INTR_PRIVATE
#include "opt_cputype.h"
@ -220,6 +220,12 @@ extern const struct locoresw mips3_locoresw;
extern const mips_locore_jumpvec_t mips3_locore_vec;
#endif
#if defined(MIPS3_LOONGSON2)
static void loongson2_vector_init(const struct splsw *);
extern const struct locoresw loongson2_locoresw;
extern const mips_locore_jumpvec_t loongson2_locore_vec;
#endif
#if defined(MIPS32)
static void mips32_vector_init(const struct splsw *);
extern const struct locoresw mips32_locoresw;
@ -432,11 +438,11 @@ static const struct pridtab cputab[] = {
(2 << CPU_MIPS_CACHED_CCA_SHIFT))
#endif
{ 0, MIPS_LOONGSON2, MIPS_REV_LOONGSON2E, -1, CPU_ARCH_MIPS3, 64,
CPU_MIPS_R4K_MMU | CPU_MIPS_DOUBLE_COUNT | MIPS_LOONGSON2_CCA, 0, 0,
"ICT Loongson 2E CPU" },
CPU_MIPS_R4K_MMU | CPU_MIPS_DOUBLE_COUNT | CPU_MIPS_LOONGSON2
| MIPS_LOONGSON2_CCA, 0, 0, "ICT Loongson 2E CPU" },
{ 0, MIPS_LOONGSON2, MIPS_REV_LOONGSON2F, -1, CPU_ARCH_MIPS3, 64,
CPU_MIPS_R4K_MMU | CPU_MIPS_DOUBLE_COUNT | MIPS_LOONGSON2_CCA, 0, 0,
"ICT Loongson 2F CPU" },
CPU_MIPS_R4K_MMU | CPU_MIPS_DOUBLE_COUNT | CPU_MIPS_LOONGSON2
| MIPS_LOONGSON2_CCA, 0, 0, "ICT Loongson 2F CPU" },
#if 0 /* ID collisions : can we use a CU1 test or similar? */
{ 0, MIPS_R3SONY, -1, -1, CPU_ARCH_MIPS1, -1,
@ -479,6 +485,7 @@ static const struct pridtab cputab[] = {
MIPS_CP0FL_CONFIG3 | MIPS_CP0FL_CONFIG7,
0, "34K" },
{ MIPS_PRID_CID_MTI, MIPS_74K, -1, -1, -1, 0,
CPU_MIPS_HAVE_SPECIAL_CCA | (0 << CPU_MIPS_CACHED_CCA_SHIFT) |
MIPS32_FLAGS | CPU_MIPS_DOUBLE_COUNT,
MIPS_CP0FL_USE |
MIPS_CP0FL_EBASE | MIPS_CP0FL_USERLOCAL | MIPS_CP0FL_HWRENA |
@ -742,6 +749,53 @@ mips3_vector_init(const struct splsw *splsw)
}
#endif /* MIPS3 */
#if defined(MIPS3_LOONGSON2)
static void
loongson2_vector_init(const struct splsw *splsw)
{
/* r4000 exception handler address and end */
extern char loongson2_exception[], loongson2_exception_end[];
/* TLB miss handler address and end */
extern char loongson2_tlb_miss[];
extern char loongson2_xtlb_miss[];
/* Cache error handler */
extern char loongson2_cache[];
/*
* Copy down exception vector code.
*/
if (loongson2_xtlb_miss - loongson2_tlb_miss != 0x80)
panic("startup: %s vector code not 128 bytes in length",
"UTLB");
if (loongson2_cache - loongson2_xtlb_miss != 0x80)
panic("startup: %s vector code not 128 bytes in length",
"XTLB");
if (loongson2_exception - loongson2_cache != 0x80)
panic("startup: %s vector code not 128 bytes in length",
"Cache error");
if (loongson2_exception_end - loongson2_exception > 0x80)
panic("startup: %s vector code too large",
"General exception");
memcpy((void *)MIPS_UTLB_MISS_EXC_VEC, loongson2_tlb_miss,
loongson2_exception_end - loongson2_tlb_miss);
/*
* Copy locore-function vector.
*/
mips_locore_jumpvec = loongson2_locore_vec;
mips_icache_sync_all();
mips_dcache_wbinv_all();
/* Clear BEV in SR so we start handling our own exceptions */
mips_cp0_status_write(mips_cp0_status_read() & ~MIPS_SR_BEV);
}
#endif /* MIPS3_LOONGSON2 */
#if defined(MIPS32)
static void
mips32_vector_init(const struct splsw *splsw)
@ -1174,12 +1228,21 @@ mips_vector_init(const struct splsw *splsw, bool multicpu_p)
#endif
mips3_cp0_pg_mask_write(MIPS3_PG_SIZE_TO_MASK(PAGE_SIZE));
mips3_cp0_wired_write(0);
#if defined(MIPS3_LOONGSON2)
if (opts->mips_cpu_flags & CPU_MIPS_LOONGSON2) {
(*loongson2_locore_vec.ljv_tlb_invalidate_all)();
mips3_cp0_wired_write(pmap_tlb0_info.ti_wired);
loongson2_vector_init(splsw);
mips_locoresw = loongson2_locoresw;
break;
}
#endif /* MIPS3_LOONGSON2 */
(*mips3_locore_vec.ljv_tlb_invalidate_all)();
mips3_cp0_wired_write(pmap_tlb0_info.ti_wired);
mips3_vector_init(splsw);
mips_locoresw = mips3_locoresw;
break;
#endif
#endif /* MIPS3 */
#if defined(MIPS32)
case CPU_ARCH_MIPS32:
mips3_tlb_probe();