Date: Fri, 2 Apr 2010 06:06:50 +0000 (UTC) From: Juli Mallett <jmallett@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r206076 - user/jmallett/octeon/sys/mips/mips Message-ID: <201004020606.o3266odj069136@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: jmallett Date: Fri Apr 2 06:06:50 2010 New Revision: 206076 URL: http://svn.freebsd.org/changeset/base/206076 Log: Add a macro, CLEAR_PTE_WIRED, to clear software-managed PTE bits. Modified: user/jmallett/octeon/sys/mips/mips/exception.S user/jmallett/octeon/sys/mips/mips/tlb.S Modified: user/jmallett/octeon/sys/mips/mips/exception.S ============================================================================== --- user/jmallett/octeon/sys/mips/mips/exception.S Fri Apr 2 05:49:14 2010 (r206075) +++ user/jmallett/octeon/sys/mips/mips/exception.S Fri Apr 2 06:06:50 2010 (r206076) @@ -66,21 +66,12 @@ #include "assym.s" -#if defined(ISA_MIPS32) -#undef WITH_64BIT_CP0 -#elif defined(ISA_MIPS64) -#define WITH_64BIT_CP0 -#elif defined(ISA_MIPS3) -#define WITH_64BIT_CP0 -#else -#error "Please write the code for this ISA" -#endif - -#ifdef WITH_64BIT_CP0 -#define WIRED_SHIFT 34 -#else -#define WIRED_SHIFT 2 -#endif +/* + * Clear the software-managed bits in a PTE in register pr. + */ +#define CLEAR_PTE_WIRED(pr) \ + sll pr, 2 ; \ + srl pr, 2 # keep bottom 30 bits .set noreorder # Noreorder is default style! @@ -154,11 +145,9 @@ MipsDoTLBMiss: PTR_ADDU k1, k1, k0 #0d: k1=pte address lw k0, 0(k1) #0e: k0=lo0 pte lw k1, 4(k1) #0f: k1=lo1 pte - PTR_SLL k0, k0, WIRED_SHIFT #10: keep bottom 30 bits - PTR_SRL k0, k0, WIRED_SHIFT #11: keep bottom 30 bits + CLEAR_PTE_WIRED(k0) MTC0 k0, COP_0_TLB_LO0 #12: lo0 is loaded - PTR_SLL k1, k1, WIRED_SHIFT #13: keep bottom 30 bits - PTR_SRL k1, k1, WIRED_SHIFT #14: keep bottom 30 bits + CLEAR_PTE_WIRED(k1) MTC0 k1, COP_0_TLB_LO1 #15: lo1 is loaded HAZARD_DELAY tlbwr #1a: write to tlb @@ -864,13 +853,11 @@ NLEAF(MipsTLBInvalidException) even_page: lw k0, 0(k1) - PTR_SLL k0, k0, WIRED_SHIFT - PTR_SRL k0, k0, WIRED_SHIFT + CLEAR_PTE_WIRED(k0) MTC0 k0, COP_0_TLB_LO0 lw k0, 4(k1) - PTR_SLL k0, k0, WIRED_SHIFT - PTR_SRL k0, k0, WIRED_SHIFT + CLEAR_PTE_WIRED(k0) MTC0 k0, COP_0_TLB_LO1 b tlb_insert_entry @@ -878,13 +865,11 @@ even_page: odd_page: lw k0, 0(k1) - PTR_SLL k0, k0, WIRED_SHIFT - PTR_SRL k0, k0, WIRED_SHIFT + CLEAR_PTE_WIRED(k0) MTC0 k0, COP_0_TLB_LO1 lw k0, -4(k1) - PTR_SLL k0, k0, WIRED_SHIFT - PTR_SRL k0, k0, WIRED_SHIFT + CLEAR_PTE_WIRED(k0) MTC0 k0, COP_0_TLB_LO0 tlb_insert_entry: @@ -1020,11 +1005,9 @@ NLEAF(MipsTLBMissException) PTR_ADDU k1, k1, k0 # k1=pte address lw k0, 0(k1) # k0=lo0 pte lw k1, 4(k1) # k1=lo1 pte - PTR_SLL k0, WIRED_SHIFT # chop bits [31..30] - PTR_SRL k0, WIRED_SHIFT # chop bits [31..30] + CLEAR_PTE_WIRED(k0) MTC0 k0, COP_0_TLB_LO0 # lo0 is loaded - PTR_SLL k1, WIRED_SHIFT # chop bits [31..30] - PTR_SRL k1, WIRED_SHIFT # chop bits [31..30] + CLEAR_PTE_WIRED(k1) MTC0 k1, COP_0_TLB_LO1 # lo1 is loaded HAZARD_DELAY Modified: user/jmallett/octeon/sys/mips/mips/tlb.S ============================================================================== --- user/jmallett/octeon/sys/mips/mips/tlb.S Fri Apr 2 05:49:14 2010 (r206075) +++ user/jmallett/octeon/sys/mips/mips/tlb.S Fri Apr 2 06:06:50 2010 (r206076) @@ -65,21 +65,13 @@ #include "assym.s" -#if defined(ISA_MIPS32) -#undef WITH_64BIT_CP0 -#elif defined(ISA_MIPS64) -#define WITH_64BIT_CP0 -#elif defined(ISA_MIPS3) -#define WITH_64BIT_CP0 -#else -#error "Please write the code for this ISA" -#endif - -#ifdef WITH_64BIT_CP0 -#define WIRED_SHIFT 34 -#else -#define WIRED_SHIFT 2 -#endif +/* + * Clear the software-managed bits in a PTE in register pr. + */ +#define CLEAR_PTE_WIRED(pr) \ + sll pr, 2 ; \ + srl pr, 2 # keep bottom 30 bits + .set noreorder # Noreorder is default style! #define ITLBNOPFIX nop;nop;nop;nop;nop;nop;nop;nop;nop;nop; @@ -266,8 +258,7 @@ LEAF(Mips_TLBUpdate) and a2, a1, PTE_G # Copy global bit MIPS_CPU_NOP_DELAY tlbp # Probe for the entry. - PTR_SLL a1, a1, WIRED_SHIFT - PTR_SRL a1, a1, WIRED_SHIFT + CLEAR_PTE_WIRED(a1) nop mfc0 v0, COP_0_TLB_INDEX # See what we got bne t1, zero, 2f # Decide even odd
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201004020606.o3266odj069136>