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	 6ab3d5624e
			
		
	
	
		6ab3d5624e
		
	
	
	
	
		
			
			Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
		
			
				
	
	
		
			742 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
			
		
		
	
	
			742 lines
		
	
	
		
			17 KiB
		
	
	
	
		
			ArmAsm
		
	
	
	
	
	
| /* $Id: ultra.S,v 1.72 2002/02/09 19:49:31 davem Exp $
 | |
|  * ultra.S: Don't expand these all over the place...
 | |
|  *
 | |
|  * Copyright (C) 1997, 2000 David S. Miller (davem@redhat.com)
 | |
|  */
 | |
| 
 | |
| #include <asm/asi.h>
 | |
| #include <asm/pgtable.h>
 | |
| #include <asm/page.h>
 | |
| #include <asm/spitfire.h>
 | |
| #include <asm/mmu_context.h>
 | |
| #include <asm/mmu.h>
 | |
| #include <asm/pil.h>
 | |
| #include <asm/head.h>
 | |
| #include <asm/thread_info.h>
 | |
| #include <asm/cacheflush.h>
 | |
| #include <asm/hypervisor.h>
 | |
| 
 | |
| 	/* Basically, most of the Spitfire vs. Cheetah madness
 | |
| 	 * has to do with the fact that Cheetah does not support
 | |
| 	 * IMMU flushes out of the secondary context.  Someone needs
 | |
| 	 * to throw a south lake birthday party for the folks
 | |
| 	 * in Microelectronics who refused to fix this shit.
 | |
| 	 */
 | |
| 
 | |
| 	/* This file is meant to be read efficiently by the CPU, not humans.
 | |
| 	 * Staraj sie tego nikomu nie pierdolnac...
 | |
| 	 */
 | |
| 	.text
 | |
| 	.align		32
 | |
| 	.globl		__flush_tlb_mm
 | |
| __flush_tlb_mm:		/* 18 insns */
 | |
| 	/* %o0=(ctx & TAG_CONTEXT_BITS), %o1=SECONDARY_CONTEXT */
 | |
| 	ldxa		[%o1] ASI_DMMU, %g2
 | |
| 	cmp		%g2, %o0
 | |
| 	bne,pn		%icc, __spitfire_flush_tlb_mm_slow
 | |
| 	 mov		0x50, %g3
 | |
| 	stxa		%g0, [%g3] ASI_DMMU_DEMAP
 | |
| 	stxa		%g0, [%g3] ASI_IMMU_DEMAP
 | |
| 	sethi		%hi(KERNBASE), %g3
 | |
| 	flush		%g3
 | |
| 	retl
 | |
| 	 nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 
 | |
| 	.align		32
 | |
| 	.globl		__flush_tlb_pending
 | |
| __flush_tlb_pending:	/* 26 insns */
 | |
| 	/* %o0 = context, %o1 = nr, %o2 = vaddrs[] */
 | |
| 	rdpr		%pstate, %g7
 | |
| 	sllx		%o1, 3, %o1
 | |
| 	andn		%g7, PSTATE_IE, %g2
 | |
| 	wrpr		%g2, %pstate
 | |
| 	mov		SECONDARY_CONTEXT, %o4
 | |
| 	ldxa		[%o4] ASI_DMMU, %g2
 | |
| 	stxa		%o0, [%o4] ASI_DMMU
 | |
| 1:	sub		%o1, (1 << 3), %o1
 | |
| 	ldx		[%o2 + %o1], %o3
 | |
| 	andcc		%o3, 1, %g0
 | |
| 	andn		%o3, 1, %o3
 | |
| 	be,pn		%icc, 2f
 | |
| 	 or		%o3, 0x10, %o3
 | |
| 	stxa		%g0, [%o3] ASI_IMMU_DEMAP
 | |
| 2:	stxa		%g0, [%o3] ASI_DMMU_DEMAP
 | |
| 	membar		#Sync
 | |
| 	brnz,pt		%o1, 1b
 | |
| 	 nop
 | |
| 	stxa		%g2, [%o4] ASI_DMMU
 | |
| 	sethi		%hi(KERNBASE), %o4
 | |
| 	flush		%o4
 | |
| 	retl
 | |
| 	 wrpr		%g7, 0x0, %pstate
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 
 | |
| 	.align		32
 | |
| 	.globl		__flush_tlb_kernel_range
 | |
| __flush_tlb_kernel_range:	/* 16 insns */
 | |
| 	/* %o0=start, %o1=end */
 | |
| 	cmp		%o0, %o1
 | |
| 	be,pn		%xcc, 2f
 | |
| 	 sethi		%hi(PAGE_SIZE), %o4
 | |
| 	sub		%o1, %o0, %o3
 | |
| 	sub		%o3, %o4, %o3
 | |
| 	or		%o0, 0x20, %o0		! Nucleus
 | |
| 1:	stxa		%g0, [%o0 + %o3] ASI_DMMU_DEMAP
 | |
| 	stxa		%g0, [%o0 + %o3] ASI_IMMU_DEMAP
 | |
| 	membar		#Sync
 | |
| 	brnz,pt		%o3, 1b
 | |
| 	 sub		%o3, %o4, %o3
 | |
| 2:	sethi		%hi(KERNBASE), %o3
 | |
| 	flush		%o3
 | |
| 	retl
 | |
| 	 nop
 | |
| 	nop
 | |
| 
 | |
| __spitfire_flush_tlb_mm_slow:
 | |
| 	rdpr		%pstate, %g1
 | |
| 	wrpr		%g1, PSTATE_IE, %pstate
 | |
| 	stxa		%o0, [%o1] ASI_DMMU
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| 	stxa		%g0, [%g3] ASI_DMMU_DEMAP
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| 	stxa		%g0, [%g3] ASI_IMMU_DEMAP
 | |
| 	flush		%g6
 | |
| 	stxa		%g2, [%o1] ASI_DMMU
 | |
| 	sethi		%hi(KERNBASE), %o1
 | |
| 	flush		%o1
 | |
| 	retl
 | |
| 	 wrpr		%g1, 0, %pstate
 | |
| 
 | |
| /*
 | |
|  * The following code flushes one page_size worth.
 | |
|  */
 | |
| #if (PAGE_SHIFT == 13)
 | |
| #define ITAG_MASK 0xfe
 | |
| #elif (PAGE_SHIFT == 16)
 | |
| #define ITAG_MASK 0x7fe
 | |
| #else
 | |
| #error unsupported PAGE_SIZE
 | |
| #endif
 | |
| 	.section .kprobes.text, "ax"
 | |
| 	.align		32
 | |
| 	.globl		__flush_icache_page
 | |
| __flush_icache_page:	/* %o0 = phys_page */
 | |
| 	membar		#StoreStore
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| 	srlx		%o0, PAGE_SHIFT, %o0
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| 	sethi		%uhi(PAGE_OFFSET), %g1
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| 	sllx		%o0, PAGE_SHIFT, %o0
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| 	sethi		%hi(PAGE_SIZE), %g2
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| 	sllx		%g1, 32, %g1
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| 	add		%o0, %g1, %o0
 | |
| 1:	subcc		%g2, 32, %g2
 | |
| 	bne,pt		%icc, 1b
 | |
| 	 flush		%o0 + %g2
 | |
| 	retl
 | |
| 	 nop
 | |
| 
 | |
| #ifdef DCACHE_ALIASING_POSSIBLE
 | |
| 
 | |
| #if (PAGE_SHIFT != 13)
 | |
| #error only page shift of 13 is supported by dcache flush
 | |
| #endif
 | |
| 
 | |
| #define DTAG_MASK 0x3
 | |
| 
 | |
| 	/* This routine is Spitfire specific so the hardcoded
 | |
| 	 * D-cache size and line-size are OK.
 | |
| 	 */
 | |
| 	.align		64
 | |
| 	.globl		__flush_dcache_page
 | |
| __flush_dcache_page:	/* %o0=kaddr, %o1=flush_icache */
 | |
| 	sethi		%uhi(PAGE_OFFSET), %g1
 | |
| 	sllx		%g1, 32, %g1
 | |
| 	sub		%o0, %g1, %o0			! physical address
 | |
| 	srlx		%o0, 11, %o0			! make D-cache TAG
 | |
| 	sethi		%hi(1 << 14), %o2		! D-cache size
 | |
| 	sub		%o2, (1 << 5), %o2		! D-cache line size
 | |
| 1:	ldxa		[%o2] ASI_DCACHE_TAG, %o3	! load D-cache TAG
 | |
| 	andcc		%o3, DTAG_MASK, %g0		! Valid?
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| 	be,pn		%xcc, 2f			! Nope, branch
 | |
| 	 andn		%o3, DTAG_MASK, %o3		! Clear valid bits
 | |
| 	cmp		%o3, %o0			! TAG match?
 | |
| 	bne,pt		%xcc, 2f			! Nope, branch
 | |
| 	 nop
 | |
| 	stxa		%g0, [%o2] ASI_DCACHE_TAG	! Invalidate TAG
 | |
| 	membar		#Sync
 | |
| 2:	brnz,pt		%o2, 1b
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| 	 sub		%o2, (1 << 5), %o2		! D-cache line size
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| 
 | |
| 	/* The I-cache does not snoop local stores so we
 | |
| 	 * better flush that too when necessary.
 | |
| 	 */
 | |
| 	brnz,pt		%o1, __flush_icache_page
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| 	 sllx		%o0, 11, %o0
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| 	retl
 | |
| 	 nop
 | |
| 
 | |
| #endif /* DCACHE_ALIASING_POSSIBLE */
 | |
| 
 | |
| 	.previous
 | |
| 
 | |
| 	/* Cheetah specific versions, patched at boot time. */
 | |
| __cheetah_flush_tlb_mm: /* 19 insns */
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| 	rdpr		%pstate, %g7
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| 	andn		%g7, PSTATE_IE, %g2
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| 	wrpr		%g2, 0x0, %pstate
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| 	wrpr		%g0, 1, %tl
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| 	mov		PRIMARY_CONTEXT, %o2
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| 	mov		0x40, %g3
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| 	ldxa		[%o2] ASI_DMMU, %g2
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| 	srlx		%g2, CTX_PGSZ1_NUC_SHIFT, %o1
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| 	sllx		%o1, CTX_PGSZ1_NUC_SHIFT, %o1
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| 	or		%o0, %o1, %o0	/* Preserve nucleus page size fields */
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| 	stxa		%o0, [%o2] ASI_DMMU
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| 	stxa		%g0, [%g3] ASI_DMMU_DEMAP
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| 	stxa		%g0, [%g3] ASI_IMMU_DEMAP
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| 	stxa		%g2, [%o2] ASI_DMMU
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| 	sethi		%hi(KERNBASE), %o2
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| 	flush		%o2
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| 	wrpr		%g0, 0, %tl
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| 	retl
 | |
| 	 wrpr		%g7, 0x0, %pstate
 | |
| 
 | |
| __cheetah_flush_tlb_pending:	/* 27 insns */
 | |
| 	/* %o0 = context, %o1 = nr, %o2 = vaddrs[] */
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| 	rdpr		%pstate, %g7
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| 	sllx		%o1, 3, %o1
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| 	andn		%g7, PSTATE_IE, %g2
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| 	wrpr		%g2, 0x0, %pstate
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| 	wrpr		%g0, 1, %tl
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| 	mov		PRIMARY_CONTEXT, %o4
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| 	ldxa		[%o4] ASI_DMMU, %g2
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| 	srlx		%g2, CTX_PGSZ1_NUC_SHIFT, %o3
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| 	sllx		%o3, CTX_PGSZ1_NUC_SHIFT, %o3
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| 	or		%o0, %o3, %o0	/* Preserve nucleus page size fields */
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| 	stxa		%o0, [%o4] ASI_DMMU
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| 1:	sub		%o1, (1 << 3), %o1
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| 	ldx		[%o2 + %o1], %o3
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| 	andcc		%o3, 1, %g0
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| 	be,pn		%icc, 2f
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| 	 andn		%o3, 1, %o3
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| 	stxa		%g0, [%o3] ASI_IMMU_DEMAP
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| 2:	stxa		%g0, [%o3] ASI_DMMU_DEMAP	
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| 	membar		#Sync
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| 	brnz,pt		%o1, 1b
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| 	 nop
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| 	stxa		%g2, [%o4] ASI_DMMU
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| 	sethi		%hi(KERNBASE), %o4
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| 	flush		%o4
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| 	wrpr		%g0, 0, %tl
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| 	retl
 | |
| 	 wrpr		%g7, 0x0, %pstate
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| 
 | |
| #ifdef DCACHE_ALIASING_POSSIBLE
 | |
| __cheetah_flush_dcache_page: /* 11 insns */
 | |
| 	sethi		%uhi(PAGE_OFFSET), %g1
 | |
| 	sllx		%g1, 32, %g1
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| 	sub		%o0, %g1, %o0
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| 	sethi		%hi(PAGE_SIZE), %o4
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| 1:	subcc		%o4, (1 << 5), %o4
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| 	stxa		%g0, [%o0 + %o4] ASI_DCACHE_INVALIDATE
 | |
| 	membar		#Sync
 | |
| 	bne,pt		%icc, 1b
 | |
| 	 nop
 | |
| 	retl		/* I-cache flush never needed on Cheetah, see callers. */
 | |
| 	 nop
 | |
| #endif /* DCACHE_ALIASING_POSSIBLE */
 | |
| 
 | |
| 	/* Hypervisor specific versions, patched at boot time.  */
 | |
| __hypervisor_tlb_tl0_error:
 | |
| 	save		%sp, -192, %sp
 | |
| 	mov		%i0, %o0
 | |
| 	call		hypervisor_tlbop_error
 | |
| 	 mov		%i1, %o1
 | |
| 	ret
 | |
| 	 restore
 | |
| 
 | |
| __hypervisor_flush_tlb_mm: /* 10 insns */
 | |
| 	mov		%o0, %o2	/* ARG2: mmu context */
 | |
| 	mov		0, %o0		/* ARG0: CPU lists unimplemented */
 | |
| 	mov		0, %o1		/* ARG1: CPU lists unimplemented */
 | |
| 	mov		HV_MMU_ALL, %o3	/* ARG3: flags */
 | |
| 	mov		HV_FAST_MMU_DEMAP_CTX, %o5
 | |
| 	ta		HV_FAST_TRAP
 | |
| 	brnz,pn		%o0, __hypervisor_tlb_tl0_error
 | |
| 	 mov		HV_FAST_MMU_DEMAP_CTX, %o1
 | |
| 	retl
 | |
| 	 nop
 | |
| 
 | |
| __hypervisor_flush_tlb_pending: /* 16 insns */
 | |
| 	/* %o0 = context, %o1 = nr, %o2 = vaddrs[] */
 | |
| 	sllx		%o1, 3, %g1
 | |
| 	mov		%o2, %g2
 | |
| 	mov		%o0, %g3
 | |
| 1:	sub		%g1, (1 << 3), %g1
 | |
| 	ldx		[%g2 + %g1], %o0      /* ARG0: vaddr + IMMU-bit */
 | |
| 	mov		%g3, %o1	      /* ARG1: mmu context */
 | |
| 	mov		HV_MMU_ALL, %o2	      /* ARG2: flags */
 | |
| 	srlx		%o0, PAGE_SHIFT, %o0
 | |
| 	sllx		%o0, PAGE_SHIFT, %o0
 | |
| 	ta		HV_MMU_UNMAP_ADDR_TRAP
 | |
| 	brnz,pn		%o0, __hypervisor_tlb_tl0_error
 | |
| 	 mov		HV_MMU_UNMAP_ADDR_TRAP, %o1
 | |
| 	brnz,pt		%g1, 1b
 | |
| 	 nop
 | |
| 	retl
 | |
| 	 nop
 | |
| 
 | |
| __hypervisor_flush_tlb_kernel_range: /* 16 insns */
 | |
| 	/* %o0=start, %o1=end */
 | |
| 	cmp		%o0, %o1
 | |
| 	be,pn		%xcc, 2f
 | |
| 	 sethi		%hi(PAGE_SIZE), %g3
 | |
| 	mov		%o0, %g1
 | |
| 	sub		%o1, %g1, %g2
 | |
| 	sub		%g2, %g3, %g2
 | |
| 1:	add		%g1, %g2, %o0	/* ARG0: virtual address */
 | |
| 	mov		0, %o1		/* ARG1: mmu context */
 | |
| 	mov		HV_MMU_ALL, %o2	/* ARG2: flags */
 | |
| 	ta		HV_MMU_UNMAP_ADDR_TRAP
 | |
| 	brnz,pn		%o0, __hypervisor_tlb_tl0_error
 | |
| 	 mov		HV_MMU_UNMAP_ADDR_TRAP, %o1
 | |
| 	brnz,pt		%g2, 1b
 | |
| 	 sub		%g2, %g3, %g2
 | |
| 2:	retl
 | |
| 	 nop
 | |
| 
 | |
| #ifdef DCACHE_ALIASING_POSSIBLE
 | |
| 	/* XXX Niagara and friends have an 8K cache, so no aliasing is
 | |
| 	 * XXX possible, but nothing explicit in the Hypervisor API
 | |
| 	 * XXX guarantees this.
 | |
| 	 */
 | |
| __hypervisor_flush_dcache_page:	/* 2 insns */
 | |
| 	retl
 | |
| 	 nop
 | |
| #endif
 | |
| 
 | |
| tlb_patch_one:
 | |
| 1:	lduw		[%o1], %g1
 | |
| 	stw		%g1, [%o0]
 | |
| 	flush		%o0
 | |
| 	subcc		%o2, 1, %o2
 | |
| 	add		%o1, 4, %o1
 | |
| 	bne,pt		%icc, 1b
 | |
| 	 add		%o0, 4, %o0
 | |
| 	retl
 | |
| 	 nop
 | |
| 
 | |
| 	.globl		cheetah_patch_cachetlbops
 | |
| cheetah_patch_cachetlbops:
 | |
| 	save		%sp, -128, %sp
 | |
| 
 | |
| 	sethi		%hi(__flush_tlb_mm), %o0
 | |
| 	or		%o0, %lo(__flush_tlb_mm), %o0
 | |
| 	sethi		%hi(__cheetah_flush_tlb_mm), %o1
 | |
| 	or		%o1, %lo(__cheetah_flush_tlb_mm), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		19, %o2
 | |
| 
 | |
| 	sethi		%hi(__flush_tlb_pending), %o0
 | |
| 	or		%o0, %lo(__flush_tlb_pending), %o0
 | |
| 	sethi		%hi(__cheetah_flush_tlb_pending), %o1
 | |
| 	or		%o1, %lo(__cheetah_flush_tlb_pending), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		27, %o2
 | |
| 
 | |
| #ifdef DCACHE_ALIASING_POSSIBLE
 | |
| 	sethi		%hi(__flush_dcache_page), %o0
 | |
| 	or		%o0, %lo(__flush_dcache_page), %o0
 | |
| 	sethi		%hi(__cheetah_flush_dcache_page), %o1
 | |
| 	or		%o1, %lo(__cheetah_flush_dcache_page), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		11, %o2
 | |
| #endif /* DCACHE_ALIASING_POSSIBLE */
 | |
| 
 | |
| 	ret
 | |
| 	 restore
 | |
| 
 | |
| #ifdef CONFIG_SMP
 | |
| 	/* These are all called by the slaves of a cross call, at
 | |
| 	 * trap level 1, with interrupts fully disabled.
 | |
| 	 *
 | |
| 	 * Register usage:
 | |
| 	 *   %g5	mm->context	(all tlb flushes)
 | |
| 	 *   %g1	address arg 1	(tlb page and range flushes)
 | |
| 	 *   %g7	address arg 2	(tlb range flush only)
 | |
| 	 *
 | |
| 	 *   %g6	scratch 1
 | |
| 	 *   %g2	scratch 2
 | |
| 	 *   %g3	scratch 3
 | |
| 	 *   %g4	scratch 4
 | |
| 	 */
 | |
| 	.align		32
 | |
| 	.globl		xcall_flush_tlb_mm
 | |
| xcall_flush_tlb_mm:	/* 21 insns */
 | |
| 	mov		PRIMARY_CONTEXT, %g2
 | |
| 	ldxa		[%g2] ASI_DMMU, %g3
 | |
| 	srlx		%g3, CTX_PGSZ1_NUC_SHIFT, %g4
 | |
| 	sllx		%g4, CTX_PGSZ1_NUC_SHIFT, %g4
 | |
| 	or		%g5, %g4, %g5	/* Preserve nucleus page size fields */
 | |
| 	stxa		%g5, [%g2] ASI_DMMU
 | |
| 	mov		0x40, %g4
 | |
| 	stxa		%g0, [%g4] ASI_DMMU_DEMAP
 | |
| 	stxa		%g0, [%g4] ASI_IMMU_DEMAP
 | |
| 	stxa		%g3, [%g2] ASI_DMMU
 | |
| 	retry
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 
 | |
| 	.globl		xcall_flush_tlb_pending
 | |
| xcall_flush_tlb_pending:	/* 21 insns */
 | |
| 	/* %g5=context, %g1=nr, %g7=vaddrs[] */
 | |
| 	sllx		%g1, 3, %g1
 | |
| 	mov		PRIMARY_CONTEXT, %g4
 | |
| 	ldxa		[%g4] ASI_DMMU, %g2
 | |
| 	srlx		%g2, CTX_PGSZ1_NUC_SHIFT, %g4
 | |
| 	sllx		%g4, CTX_PGSZ1_NUC_SHIFT, %g4
 | |
| 	or		%g5, %g4, %g5
 | |
| 	mov		PRIMARY_CONTEXT, %g4
 | |
| 	stxa		%g5, [%g4] ASI_DMMU
 | |
| 1:	sub		%g1, (1 << 3), %g1
 | |
| 	ldx		[%g7 + %g1], %g5
 | |
| 	andcc		%g5, 0x1, %g0
 | |
| 	be,pn		%icc, 2f
 | |
| 
 | |
| 	 andn		%g5, 0x1, %g5
 | |
| 	stxa		%g0, [%g5] ASI_IMMU_DEMAP
 | |
| 2:	stxa		%g0, [%g5] ASI_DMMU_DEMAP
 | |
| 	membar		#Sync
 | |
| 	brnz,pt		%g1, 1b
 | |
| 	 nop
 | |
| 	stxa		%g2, [%g4] ASI_DMMU
 | |
| 	retry
 | |
| 	nop
 | |
| 
 | |
| 	.globl		xcall_flush_tlb_kernel_range
 | |
| xcall_flush_tlb_kernel_range:	/* 25 insns */
 | |
| 	sethi		%hi(PAGE_SIZE - 1), %g2
 | |
| 	or		%g2, %lo(PAGE_SIZE - 1), %g2
 | |
| 	andn		%g1, %g2, %g1
 | |
| 	andn		%g7, %g2, %g7
 | |
| 	sub		%g7, %g1, %g3
 | |
| 	add		%g2, 1, %g2
 | |
| 	sub		%g3, %g2, %g3
 | |
| 	or		%g1, 0x20, %g1		! Nucleus
 | |
| 1:	stxa		%g0, [%g1 + %g3] ASI_DMMU_DEMAP
 | |
| 	stxa		%g0, [%g1 + %g3] ASI_IMMU_DEMAP
 | |
| 	membar		#Sync
 | |
| 	brnz,pt		%g3, 1b
 | |
| 	 sub		%g3, %g2, %g3
 | |
| 	retry
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 	nop
 | |
| 
 | |
| 	/* This runs in a very controlled environment, so we do
 | |
| 	 * not need to worry about BH races etc.
 | |
| 	 */
 | |
| 	.globl		xcall_sync_tick
 | |
| xcall_sync_tick:
 | |
| 
 | |
| 661:	rdpr		%pstate, %g2
 | |
| 	wrpr		%g2, PSTATE_IG | PSTATE_AG, %pstate
 | |
| 	.section	.sun4v_2insn_patch, "ax"
 | |
| 	.word		661b
 | |
| 	nop
 | |
| 	nop
 | |
| 	.previous
 | |
| 
 | |
| 	rdpr		%pil, %g2
 | |
| 	wrpr		%g0, 15, %pil
 | |
| 	sethi		%hi(109f), %g7
 | |
| 	b,pt		%xcc, etrap_irq
 | |
| 109:	 or		%g7, %lo(109b), %g7
 | |
| 	call		smp_synchronize_tick_client
 | |
| 	 nop
 | |
| 	clr		%l6
 | |
| 	b		rtrap_xcall
 | |
| 	 ldx		[%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
 | |
| 
 | |
| 	/* NOTE: This is SPECIAL!!  We do etrap/rtrap however
 | |
| 	 *       we choose to deal with the "BH's run with
 | |
| 	 *       %pil==15" problem (described in asm/pil.h)
 | |
| 	 *       by just invoking rtrap directly past where
 | |
| 	 *       BH's are checked for.
 | |
| 	 *
 | |
| 	 *       We do it like this because we do not want %pil==15
 | |
| 	 *       lockups to prevent regs being reported.
 | |
| 	 */
 | |
| 	.globl		xcall_report_regs
 | |
| xcall_report_regs:
 | |
| 
 | |
| 661:	rdpr		%pstate, %g2
 | |
| 	wrpr		%g2, PSTATE_IG | PSTATE_AG, %pstate
 | |
| 	.section	.sun4v_2insn_patch, "ax"
 | |
| 	.word		661b
 | |
| 	nop
 | |
| 	nop
 | |
| 	.previous
 | |
| 
 | |
| 	rdpr		%pil, %g2
 | |
| 	wrpr		%g0, 15, %pil
 | |
| 	sethi		%hi(109f), %g7
 | |
| 	b,pt		%xcc, etrap_irq
 | |
| 109:	 or		%g7, %lo(109b), %g7
 | |
| 	call		__show_regs
 | |
| 	 add		%sp, PTREGS_OFF, %o0
 | |
| 	clr		%l6
 | |
| 	/* Has to be a non-v9 branch due to the large distance. */
 | |
| 	b		rtrap_xcall
 | |
| 	 ldx		[%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
 | |
| 
 | |
| #ifdef DCACHE_ALIASING_POSSIBLE
 | |
| 	.align		32
 | |
| 	.globl		xcall_flush_dcache_page_cheetah
 | |
| xcall_flush_dcache_page_cheetah: /* %g1 == physical page address */
 | |
| 	sethi		%hi(PAGE_SIZE), %g3
 | |
| 1:	subcc		%g3, (1 << 5), %g3
 | |
| 	stxa		%g0, [%g1 + %g3] ASI_DCACHE_INVALIDATE
 | |
| 	membar		#Sync
 | |
| 	bne,pt		%icc, 1b
 | |
| 	 nop
 | |
| 	retry
 | |
| 	nop
 | |
| #endif /* DCACHE_ALIASING_POSSIBLE */
 | |
| 
 | |
| 	.globl		xcall_flush_dcache_page_spitfire
 | |
| xcall_flush_dcache_page_spitfire: /* %g1 == physical page address
 | |
| 				     %g7 == kernel page virtual address
 | |
| 				     %g5 == (page->mapping != NULL)  */
 | |
| #ifdef DCACHE_ALIASING_POSSIBLE
 | |
| 	srlx		%g1, (13 - 2), %g1	! Form tag comparitor
 | |
| 	sethi		%hi(L1DCACHE_SIZE), %g3	! D$ size == 16K
 | |
| 	sub		%g3, (1 << 5), %g3	! D$ linesize == 32
 | |
| 1:	ldxa		[%g3] ASI_DCACHE_TAG, %g2
 | |
| 	andcc		%g2, 0x3, %g0
 | |
| 	be,pn		%xcc, 2f
 | |
| 	 andn		%g2, 0x3, %g2
 | |
| 	cmp		%g2, %g1
 | |
| 
 | |
| 	bne,pt		%xcc, 2f
 | |
| 	 nop
 | |
| 	stxa		%g0, [%g3] ASI_DCACHE_TAG
 | |
| 	membar		#Sync
 | |
| 2:	cmp		%g3, 0
 | |
| 	bne,pt		%xcc, 1b
 | |
| 	 sub		%g3, (1 << 5), %g3
 | |
| 
 | |
| 	brz,pn		%g5, 2f
 | |
| #endif /* DCACHE_ALIASING_POSSIBLE */
 | |
| 	 sethi		%hi(PAGE_SIZE), %g3
 | |
| 
 | |
| 1:	flush		%g7
 | |
| 	subcc		%g3, (1 << 5), %g3
 | |
| 	bne,pt		%icc, 1b
 | |
| 	 add		%g7, (1 << 5), %g7
 | |
| 
 | |
| 2:	retry
 | |
| 	nop
 | |
| 	nop
 | |
| 
 | |
| 	/* %g5:	error
 | |
| 	 * %g6:	tlb op
 | |
| 	 */
 | |
| __hypervisor_tlb_xcall_error:
 | |
| 	mov	%g5, %g4
 | |
| 	mov	%g6, %g5
 | |
| 	ba,pt	%xcc, etrap
 | |
| 	 rd	%pc, %g7
 | |
| 	mov	%l4, %o0
 | |
| 	call	hypervisor_tlbop_error_xcall
 | |
| 	 mov	%l5, %o1
 | |
| 	ba,a,pt	%xcc, rtrap_clr_l6
 | |
| 
 | |
| 	.globl		__hypervisor_xcall_flush_tlb_mm
 | |
| __hypervisor_xcall_flush_tlb_mm: /* 21 insns */
 | |
| 	/* %g5=ctx, g1,g2,g3,g4,g7=scratch, %g6=unusable */
 | |
| 	mov		%o0, %g2
 | |
| 	mov		%o1, %g3
 | |
| 	mov		%o2, %g4
 | |
| 	mov		%o3, %g1
 | |
| 	mov		%o5, %g7
 | |
| 	clr		%o0		/* ARG0: CPU lists unimplemented */
 | |
| 	clr		%o1		/* ARG1: CPU lists unimplemented */
 | |
| 	mov		%g5, %o2	/* ARG2: mmu context */
 | |
| 	mov		HV_MMU_ALL, %o3	/* ARG3: flags */
 | |
| 	mov		HV_FAST_MMU_DEMAP_CTX, %o5
 | |
| 	ta		HV_FAST_TRAP
 | |
| 	mov		HV_FAST_MMU_DEMAP_CTX, %g6
 | |
| 	brnz,pn		%o0, __hypervisor_tlb_xcall_error
 | |
| 	 mov		%o0, %g5
 | |
| 	mov		%g2, %o0
 | |
| 	mov		%g3, %o1
 | |
| 	mov		%g4, %o2
 | |
| 	mov		%g1, %o3
 | |
| 	mov		%g7, %o5
 | |
| 	membar		#Sync
 | |
| 	retry
 | |
| 
 | |
| 	.globl		__hypervisor_xcall_flush_tlb_pending
 | |
| __hypervisor_xcall_flush_tlb_pending: /* 21 insns */
 | |
| 	/* %g5=ctx, %g1=nr, %g7=vaddrs[], %g2,%g3,%g4,g6=scratch */
 | |
| 	sllx		%g1, 3, %g1
 | |
| 	mov		%o0, %g2
 | |
| 	mov		%o1, %g3
 | |
| 	mov		%o2, %g4
 | |
| 1:	sub		%g1, (1 << 3), %g1
 | |
| 	ldx		[%g7 + %g1], %o0	/* ARG0: virtual address */
 | |
| 	mov		%g5, %o1		/* ARG1: mmu context */
 | |
| 	mov		HV_MMU_ALL, %o2		/* ARG2: flags */
 | |
| 	srlx		%o0, PAGE_SHIFT, %o0
 | |
| 	sllx		%o0, PAGE_SHIFT, %o0
 | |
| 	ta		HV_MMU_UNMAP_ADDR_TRAP
 | |
| 	mov		HV_MMU_UNMAP_ADDR_TRAP, %g6
 | |
| 	brnz,a,pn	%o0, __hypervisor_tlb_xcall_error
 | |
| 	 mov		%o0, %g5
 | |
| 	brnz,pt		%g1, 1b
 | |
| 	 nop
 | |
| 	mov		%g2, %o0
 | |
| 	mov		%g3, %o1
 | |
| 	mov		%g4, %o2
 | |
| 	membar		#Sync
 | |
| 	retry
 | |
| 
 | |
| 	.globl		__hypervisor_xcall_flush_tlb_kernel_range
 | |
| __hypervisor_xcall_flush_tlb_kernel_range: /* 25 insns */
 | |
| 	/* %g1=start, %g7=end, g2,g3,g4,g5,g6=scratch */
 | |
| 	sethi		%hi(PAGE_SIZE - 1), %g2
 | |
| 	or		%g2, %lo(PAGE_SIZE - 1), %g2
 | |
| 	andn		%g1, %g2, %g1
 | |
| 	andn		%g7, %g2, %g7
 | |
| 	sub		%g7, %g1, %g3
 | |
| 	add		%g2, 1, %g2
 | |
| 	sub		%g3, %g2, %g3
 | |
| 	mov		%o0, %g2
 | |
| 	mov		%o1, %g4
 | |
| 	mov		%o2, %g7
 | |
| 1:	add		%g1, %g3, %o0	/* ARG0: virtual address */
 | |
| 	mov		0, %o1		/* ARG1: mmu context */
 | |
| 	mov		HV_MMU_ALL, %o2	/* ARG2: flags */
 | |
| 	ta		HV_MMU_UNMAP_ADDR_TRAP
 | |
| 	mov		HV_MMU_UNMAP_ADDR_TRAP, %g6
 | |
| 	brnz,pn		%o0, __hypervisor_tlb_xcall_error
 | |
| 	 mov		%o0, %g5
 | |
| 	sethi		%hi(PAGE_SIZE), %o2
 | |
| 	brnz,pt		%g3, 1b
 | |
| 	 sub		%g3, %o2, %g3
 | |
| 	mov		%g2, %o0
 | |
| 	mov		%g4, %o1
 | |
| 	mov		%g7, %o2
 | |
| 	membar		#Sync
 | |
| 	retry
 | |
| 
 | |
| 	/* These just get rescheduled to PIL vectors. */
 | |
| 	.globl		xcall_call_function
 | |
| xcall_call_function:
 | |
| 	wr		%g0, (1 << PIL_SMP_CALL_FUNC), %set_softint
 | |
| 	retry
 | |
| 
 | |
| 	.globl		xcall_receive_signal
 | |
| xcall_receive_signal:
 | |
| 	wr		%g0, (1 << PIL_SMP_RECEIVE_SIGNAL), %set_softint
 | |
| 	retry
 | |
| 
 | |
| 	.globl		xcall_capture
 | |
| xcall_capture:
 | |
| 	wr		%g0, (1 << PIL_SMP_CAPTURE), %set_softint
 | |
| 	retry
 | |
| 
 | |
| 	.globl		xcall_new_mmu_context_version
 | |
| xcall_new_mmu_context_version:
 | |
| 	wr		%g0, (1 << PIL_SMP_CTX_NEW_VERSION), %set_softint
 | |
| 	retry
 | |
| 
 | |
| #endif /* CONFIG_SMP */
 | |
| 
 | |
| 
 | |
| 	.globl		hypervisor_patch_cachetlbops
 | |
| hypervisor_patch_cachetlbops:
 | |
| 	save		%sp, -128, %sp
 | |
| 
 | |
| 	sethi		%hi(__flush_tlb_mm), %o0
 | |
| 	or		%o0, %lo(__flush_tlb_mm), %o0
 | |
| 	sethi		%hi(__hypervisor_flush_tlb_mm), %o1
 | |
| 	or		%o1, %lo(__hypervisor_flush_tlb_mm), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		10, %o2
 | |
| 
 | |
| 	sethi		%hi(__flush_tlb_pending), %o0
 | |
| 	or		%o0, %lo(__flush_tlb_pending), %o0
 | |
| 	sethi		%hi(__hypervisor_flush_tlb_pending), %o1
 | |
| 	or		%o1, %lo(__hypervisor_flush_tlb_pending), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		16, %o2
 | |
| 
 | |
| 	sethi		%hi(__flush_tlb_kernel_range), %o0
 | |
| 	or		%o0, %lo(__flush_tlb_kernel_range), %o0
 | |
| 	sethi		%hi(__hypervisor_flush_tlb_kernel_range), %o1
 | |
| 	or		%o1, %lo(__hypervisor_flush_tlb_kernel_range), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		16, %o2
 | |
| 
 | |
| #ifdef DCACHE_ALIASING_POSSIBLE
 | |
| 	sethi		%hi(__flush_dcache_page), %o0
 | |
| 	or		%o0, %lo(__flush_dcache_page), %o0
 | |
| 	sethi		%hi(__hypervisor_flush_dcache_page), %o1
 | |
| 	or		%o1, %lo(__hypervisor_flush_dcache_page), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		2, %o2
 | |
| #endif /* DCACHE_ALIASING_POSSIBLE */
 | |
| 
 | |
| #ifdef CONFIG_SMP
 | |
| 	sethi		%hi(xcall_flush_tlb_mm), %o0
 | |
| 	or		%o0, %lo(xcall_flush_tlb_mm), %o0
 | |
| 	sethi		%hi(__hypervisor_xcall_flush_tlb_mm), %o1
 | |
| 	or		%o1, %lo(__hypervisor_xcall_flush_tlb_mm), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		21, %o2
 | |
| 
 | |
| 	sethi		%hi(xcall_flush_tlb_pending), %o0
 | |
| 	or		%o0, %lo(xcall_flush_tlb_pending), %o0
 | |
| 	sethi		%hi(__hypervisor_xcall_flush_tlb_pending), %o1
 | |
| 	or		%o1, %lo(__hypervisor_xcall_flush_tlb_pending), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		21, %o2
 | |
| 
 | |
| 	sethi		%hi(xcall_flush_tlb_kernel_range), %o0
 | |
| 	or		%o0, %lo(xcall_flush_tlb_kernel_range), %o0
 | |
| 	sethi		%hi(__hypervisor_xcall_flush_tlb_kernel_range), %o1
 | |
| 	or		%o1, %lo(__hypervisor_xcall_flush_tlb_kernel_range), %o1
 | |
| 	call		tlb_patch_one
 | |
| 	 mov		25, %o2
 | |
| #endif /* CONFIG_SMP */
 | |
| 
 | |
| 	ret
 | |
| 	 restore
 |