pacache.S
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:21k
- /*
- * Parisc tlb and cache flushing support
- * Copyright (C) 2000 Hewlett-Packard (John Marvin)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- /*
- * NOTE: fdc,fic, and pdc instructions that use base register modification
- * should only use index and base registers that are not shadowed,
- * so that the fast path emulation in the non access miss handler
- * can be used.
- */
- #ifdef __LP64__
- #define ADDIB addib,*
- #define CMPB cmpb,*
- #define ANDCM andcm,*
- .level 2.0w
- #else
- #define ADDIB addib,
- #define CMPB cmpb,
- #define ANDCM andcm
- .level 2.0
- #endif
- #include <asm/assembly.h>
- #include <asm/psw.h>
- #include <asm/pgtable.h>
- #include <asm/cache.h>
- .text
- .align 128
- .export flush_tlb_all_local,code
- flush_tlb_all_local:
- .proc
- .callinfo NO_CALLS
- .entry
- /*
- * The pitlbe and pdtlbe instructions should only be used to
- * flush the entire tlb. Also, there needs to be no intervening
- * tlb operations, e.g. tlb misses, so the operation needs
- * to happen in real mode with all interruptions disabled.
- */
- /*
- * Once again, we do the rfi dance ... some day we need examine
- * all of our uses of this type of code and see what can be
- * consolidated.
- */
- rsm PSW_SM_I,%r19 /* relied upon translation! */
- nop
- nop
- nop
- nop
- nop
- nop
- nop
-
- rsm PSW_SM_Q,%r0 /* Turn off Q bit to load iia queue */
- ldil L%REAL_MODE_PSW, %r1
- ldo R%REAL_MODE_PSW(%r1), %r1
- mtctl %r1, %cr22
- mtctl %r0, %cr17
- mtctl %r0, %cr17
- ldil L%PA(1f),%r1
- ldo R%PA(1f)(%r1),%r1
- mtctl %r1, %cr18
- ldo 4(%r1), %r1
- mtctl %r1, %cr18
- rfi
- nop
- 1: ldil L%PA(cache_info),%r1
- ldo R%PA(cache_info)(%r1),%r1
- /* Flush Instruction Tlb */
- LDREG ITLB_SID_BASE(%r1),%r20
- LDREG ITLB_SID_STRIDE(%r1),%r21
- LDREG ITLB_SID_COUNT(%r1),%r22
- LDREG ITLB_OFF_BASE(%r1),%arg0
- LDREG ITLB_OFF_STRIDE(%r1),%arg1
- LDREG ITLB_OFF_COUNT(%r1),%arg2
- LDREG ITLB_LOOP(%r1),%arg3
- ADDIB= -1,%arg3,fitoneloop /* Preadjust and test */
- movb,<,n %arg3,%r31,fitdone /* If loop < 0, skip */
- copy %arg0,%r28 /* Init base addr */
- fitmanyloop: /* Loop if LOOP >= 2 */
- mtsp %r20,%sr1
- add %r21,%r20,%r20 /* increment space */
- copy %arg2,%r29 /* Init middle loop count */
- fitmanymiddle: /* Loop if LOOP >= 2 */
- ADDIB> -1,%r31,fitmanymiddle /* Adjusted inner loop decr */
- pitlbe 0(%sr1,%r28)
- pitlbe,m %arg1(%sr1,%r28) /* Last pitlbe and addr adjust */
- ADDIB> -1,%r29,fitmanymiddle /* Middle loop decr */
- copy %arg3,%r31 /* Re-init inner loop count */
- movb,tr %arg0,%r28,fitmanyloop /* Re-init base addr */
- ADDIB<=,n -1,%r22,fitdone /* Outer loop count decr */
- fitoneloop: /* Loop if LOOP = 1 */
- mtsp %r20,%sr1
- copy %arg0,%r28 /* init base addr */
- copy %arg2,%r29 /* init middle loop count */
- fitonemiddle: /* Loop if LOOP = 1 */
- ADDIB> -1,%r29,fitonemiddle /* Middle loop count decr */
- pitlbe,m %arg1(%sr1,%r28) /* pitlbe for one loop */
- ADDIB> -1,%r22,fitoneloop /* Outer loop count decr */
- add %r21,%r20,%r20 /* increment space */
- fitdone:
- /* Flush Data Tlb */
- LDREG DTLB_SID_BASE(%r1),%r20
- LDREG DTLB_SID_STRIDE(%r1),%r21
- LDREG DTLB_SID_COUNT(%r1),%r22
- LDREG DTLB_OFF_BASE(%r1),%arg0
- LDREG DTLB_OFF_STRIDE(%r1),%arg1
- LDREG DTLB_OFF_COUNT(%r1),%arg2
- LDREG DTLB_LOOP(%r1),%arg3
- ADDIB= -1,%arg3,fdtoneloop /* Preadjust and test */
- movb,<,n %arg3,%r31,fdtdone /* If loop < 0, skip */
- copy %arg0,%r28 /* Init base addr */
- fdtmanyloop: /* Loop if LOOP >= 2 */
- mtsp %r20,%sr1
- add %r21,%r20,%r20 /* increment space */
- copy %arg2,%r29 /* Init middle loop count */
- fdtmanymiddle: /* Loop if LOOP >= 2 */
- ADDIB> -1,%r31,fdtmanymiddle /* Adjusted inner loop decr */
- pdtlbe 0(%sr1,%r28)
- pdtlbe,m %arg1(%sr1,%r28) /* Last pdtlbe and addr adjust */
- ADDIB> -1,%r29,fdtmanymiddle /* Middle loop decr */
- copy %arg3,%r31 /* Re-init inner loop count */
- movb,tr %arg0,%r28,fdtmanyloop /* Re-init base addr */
- ADDIB<=,n -1,%r22,fdtdone /* Outer loop count decr */
- fdtoneloop: /* Loop if LOOP = 1 */
- mtsp %r20,%sr1
- copy %arg0,%r28 /* init base addr */
- copy %arg2,%r29 /* init middle loop count */
- fdtonemiddle: /* Loop if LOOP = 1 */
- ADDIB> -1,%r29,fdtonemiddle /* Middle loop count decr */
- pdtlbe,m %arg1(%sr1,%r28) /* pdtlbe for one loop */
- ADDIB> -1,%r22,fdtoneloop /* Outer loop count decr */
- add %r21,%r20,%r20 /* increment space */
- fdtdone:
- /* Switch back to virtual mode */
- rsm PSW_SM_Q,%r0 /* clear Q bit to load iia queue */
- ldil L%KERNEL_PSW, %r1
- ldo R%KERNEL_PSW(%r1), %r1
- or %r1,%r19,%r1 /* Set I bit if set on entry */
- mtctl %r1, %cr22
- mtctl %r0, %cr17
- mtctl %r0, %cr17
- ldil L%(2f), %r1
- ldo R%(2f)(%r1), %r1
- mtctl %r1, %cr18
- ldo 4(%r1), %r1
- mtctl %r1, %cr18
- rfi
- nop
- 2: bv %r0(%r2)
- nop
- .exit
- .procend
- .export flush_instruction_cache_local,code
- .import cache_info,data
- flush_instruction_cache_local:
- .proc
- .callinfo NO_CALLS
- .entry
- mtsp %r0,%sr1
- ldil L%cache_info,%r1
- ldo R%cache_info(%r1),%r1
- /* Flush Instruction Cache */
- LDREG ICACHE_BASE(%r1),%arg0
- LDREG ICACHE_STRIDE(%r1),%arg1
- LDREG ICACHE_COUNT(%r1),%arg2
- LDREG ICACHE_LOOP(%r1),%arg3
- ADDIB= -1,%arg3,fioneloop /* Preadjust and test */
- movb,<,n %arg3,%r31,fisync /* If loop < 0, do sync */
- fimanyloop: /* Loop if LOOP >= 2 */
- ADDIB> -1,%r31,fimanyloop /* Adjusted inner loop decr */
- fice 0(%sr1,%arg0)
- fice,m %arg1(%sr1,%arg0) /* Last fice and addr adjust */
- movb,tr %arg3,%r31,fimanyloop /* Re-init inner loop count */
- ADDIB<=,n -1,%arg2,fisync /* Outer loop decr */
- fioneloop: /* Loop if LOOP = 1 */
- ADDIB> -1,%arg2,fioneloop /* Outer loop count decr */
- fice,m %arg1(%sr1,%arg0) /* Fice for one loop */
- fisync:
- sync
- bv %r0(%r2)
- nop
- .exit
- .procend
- .export flush_data_cache_local,code
- .import cache_info,data
- flush_data_cache_local:
- .proc
- .callinfo NO_CALLS
- .entry
- mtsp %r0,%sr1
- ldil L%cache_info,%r1
- ldo R%cache_info(%r1),%r1
- /* Flush Data Cache */
- LDREG DCACHE_BASE(%r1),%arg0
- LDREG DCACHE_STRIDE(%r1),%arg1
- LDREG DCACHE_COUNT(%r1),%arg2
- LDREG DCACHE_LOOP(%r1),%arg3
- rsm PSW_SM_I,%r22
- ADDIB= -1,%arg3,fdoneloop /* Preadjust and test */
- movb,<,n %arg3,%r31,fdsync /* If loop < 0, do sync */
- fdmanyloop: /* Loop if LOOP >= 2 */
- ADDIB> -1,%r31,fdmanyloop /* Adjusted inner loop decr */
- fdce 0(%sr1,%arg0)
- fdce,m %arg1(%sr1,%arg0) /* Last fdce and addr adjust */
- movb,tr %arg3,%r31,fdmanyloop /* Re-init inner loop count */
- ADDIB<=,n -1,%arg2,fdsync /* Outer loop decr */
- fdoneloop: /* Loop if LOOP = 1 */
- ADDIB> -1,%arg2,fdoneloop /* Outer loop count decr */
- fdce,m %arg1(%sr1,%arg0) /* Fdce for one loop */
- fdsync:
- syncdma
- sync
- mtsm %r22
- bv %r0(%r2)
- nop
- .exit
- .procend
- .export copy_user_page_asm,code
- copy_user_page_asm:
- .proc
- .callinfo NO_CALLS
- .entry
- ldi 64,%r1
- /*
- * This loop is optimized for PCXL/PCXL2 ldw/ldw and stw/stw
- * bundles (very restricted rules for bundling). It probably
- * does OK on PCXU and better, but we could do better with
- * ldd/std instructions. Note that until (if) we start saving
- * the full 64 bit register values on interrupt, we can't
- * use ldd/std on a 32 bit kernel.
- */
- 1:
- ldw 0(%r25),%r19
- ldw 4(%r25),%r20
- ldw 8(%r25),%r21
- ldw 12(%r25),%r22
- stw %r19,0(%r26)
- stw %r20,4(%r26)
- stw %r21,8(%r26)
- stw %r22,12(%r26)
- ldw 16(%r25),%r19
- ldw 20(%r25),%r20
- ldw 24(%r25),%r21
- ldw 28(%r25),%r22
- stw %r19,16(%r26)
- stw %r20,20(%r26)
- stw %r21,24(%r26)
- stw %r22,28(%r26)
- ldw 32(%r25),%r19
- ldw 36(%r25),%r20
- ldw 40(%r25),%r21
- ldw 44(%r25),%r22
- stw %r19,32(%r26)
- stw %r20,36(%r26)
- stw %r21,40(%r26)
- stw %r22,44(%r26)
- ldw 48(%r25),%r19
- ldw 52(%r25),%r20
- ldw 56(%r25),%r21
- ldw 60(%r25),%r22
- stw %r19,48(%r26)
- stw %r20,52(%r26)
- stw %r21,56(%r26)
- stw %r22,60(%r26)
- ldo 64(%r26),%r26
- ADDIB> -1,%r1,1b
- ldo 64(%r25),%r25
- bv %r0(%r2)
- nop
- .exit
- .procend
- #if (TMPALIAS_MAP_START >= 0x80000000UL)
- Warning TMPALIAS_MAP_START changed. If > 2 Gb, code in pacache.S is bogus
- #endif
- /*
- * NOTE: Code in clear_user_page has a hard coded dependency on the
- * maximum alias boundary being 4 Mb. We've been assured by the
- * parisc chip designers that there will not ever be a parisc
- * chip with a larger alias boundary (Never say never :-) ).
- *
- * Subtle: the dtlb miss handlers support the temp alias region by
- * "knowing" that if a dtlb miss happens within the temp alias
- * region it must have occurred while in clear_user_page. Since
- * this routine makes use of processor local translations, we
- * don't want to insert them into the kernel page table. Instead,
- * we load up some general registers (they need to be registers
- * which aren't shadowed) with the physical page numbers (preshifted
- * for tlb insertion) needed to insert the translations. When we
- * miss on the translation, the dtlb miss handler inserts the
- * translation into the tlb using these values:
- *
- * %r26 physical page (shifted for tlb insert) of "to" translation
- * %r23 physical page (shifted for tlb insert) of "from" translation
- */
- #if 0
- /*
- * We can't do this since copy_user_page is used to bring in
- * file data that might have instructions. Since the data would
- * then need to be flushed out so the i-fetch can see it, it
- * makes more sense to just copy through the kernel translation
- * and flush it.
- *
- * I'm still keeping this around because it may be possible to
- * use it if more information is passed into copy_user_page().
- * Have to do some measurements to see if it is worthwhile to
- * lobby for such a change.
- */
- .export copy_user_page_asm,code
- copy_user_page_asm:
- .proc
- .callinfo NO_CALLS
- .entry
- ldil L%(__PAGE_OFFSET),%r1
- sub %r26,%r1,%r26
- sub %r25,%r1,%r23 /* move physical addr into non shadowed reg */
- ldil L%(TMPALIAS_MAP_START),%r28
- #ifdef __LP64__
- extrd,u %r26,56,32,%r26 /* convert phys addr to tlb insert format */
- extrd,u %r23,56,32,%r23 /* convert phys addr to tlb insert format */
- depd %r24,63,22,%r28 /* Form aliased virtual address 'to' */
- depdi 0,63,12,%r28 /* Clear any offset bits */
- copy %r28,%r29
- depdi 1,41,1,%r29 /* Form aliased virtual address 'from' */
- #else
- extrw,u %r26,24,25,%r26 /* convert phys addr to tlb insert format */
- extrw,u %r23,24,25,%r23 /* convert phys addr to tlb insert format */
- depw %r24,31,22,%r28 /* Form aliased virtual address 'to' */
- depwi 0,31,12,%r28 /* Clear any offset bits */
- copy %r28,%r29
- depwi 1,9,1,%r29 /* Form aliased virtual address 'from' */
- #endif
- /* Purge any old translations */
- pdtlb 0(%r28)
- pdtlb 0(%r29)
- ldi 64,%r1
- /*
- * This loop is optimized for PCXL/PCXL2 ldw/ldw and stw/stw
- * bundles (very restricted rules for bundling). It probably
- * does OK on PCXU and better, but we could do better with
- * ldd/std instructions. Note that until (if) we start saving
- * the full 64 bit register values on interrupt, we can't
- * use ldd/std on a 32 bit kernel.
- */
- 1:
- ldw 0(%r29),%r19
- ldw 4(%r29),%r20
- ldw 8(%r29),%r21
- ldw 12(%r29),%r22
- stw %r19,0(%r28)
- stw %r20,4(%r28)
- stw %r21,8(%r28)
- stw %r22,12(%r28)
- ldw 16(%r29),%r19
- ldw 20(%r29),%r20
- ldw 24(%r29),%r21
- ldw 28(%r29),%r22
- stw %r19,16(%r28)
- stw %r20,20(%r28)
- stw %r21,24(%r28)
- stw %r22,28(%r28)
- ldw 32(%r29),%r19
- ldw 36(%r29),%r20
- ldw 40(%r29),%r21
- ldw 44(%r29),%r22
- stw %r19,32(%r28)
- stw %r20,36(%r28)
- stw %r21,40(%r28)
- stw %r22,44(%r28)
- ldw 48(%r29),%r19
- ldw 52(%r29),%r20
- ldw 56(%r29),%r21
- ldw 60(%r29),%r22
- stw %r19,48(%r28)
- stw %r20,52(%r28)
- stw %r21,56(%r28)
- stw %r22,60(%r28)
- ldo 64(%r28),%r28
- ADDIB> -1,%r1,1b
- ldo 64(%r29),%r29
- bv %r0(%r2)
- nop
- .exit
- .procend
- #endif
- .export clear_user_page_asm,code
- clear_user_page_asm:
- .proc
- .callinfo NO_CALLS
- .entry
- tophys_r1 %r26
- ldil L%(TMPALIAS_MAP_START),%r28
- #ifdef __LP64__
- extrd,u %r26,56,32,%r26 /* convert phys addr to tlb insert format */
- depd %r25,63,22,%r28 /* Form aliased virtual address 'to' */
- depdi 0,63,12,%r28 /* Clear any offset bits */
- #else
- extrw,u %r26,24,25,%r26 /* convert phys addr to tlb insert format */
- depw %r25,31,22,%r28 /* Form aliased virtual address 'to' */
- depwi 0,31,12,%r28 /* Clear any offset bits */
- #endif
- /* Purge any old translation */
- pdtlb 0(%r28)
- ldi 64,%r1
- 1:
- stw %r0,0(%r28)
- stw %r0,4(%r28)
- stw %r0,8(%r28)
- stw %r0,12(%r28)
- stw %r0,16(%r28)
- stw %r0,20(%r28)
- stw %r0,24(%r28)
- stw %r0,28(%r28)
- stw %r0,32(%r28)
- stw %r0,36(%r28)
- stw %r0,40(%r28)
- stw %r0,44(%r28)
- stw %r0,48(%r28)
- stw %r0,52(%r28)
- stw %r0,56(%r28)
- stw %r0,60(%r28)
- ADDIB> -1,%r1,1b
- ldo 64(%r28),%r28
- bv %r0(%r2)
- nop
- .exit
- .procend
- .export flush_kernel_dcache_page
- flush_kernel_dcache_page:
- .proc
- .callinfo NO_CALLS
- .entry
- ldil L%dcache_stride,%r1
- ldw R%dcache_stride(%r1),%r23
- #ifdef __LP64__
- depdi,z 1,63-PAGE_SHIFT,1,%r25
- #else
- depwi,z 1,31-PAGE_SHIFT,1,%r25
- #endif
- add %r26,%r25,%r25
- sub %r25,%r23,%r25
- 1: fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- fdc,m %r23(%r26)
- CMPB<< %r26,%r25,1b
- fdc,m %r23(%r26)
- sync
- bv %r0(%r2)
- nop
- .exit
- .procend
- .export purge_kernel_dcache_page
- purge_kernel_dcache_page:
- .proc
- .callinfo NO_CALLS
- .entry
- ldil L%dcache_stride,%r1
- ldw R%dcache_stride(%r1),%r23
- #ifdef __LP64__
- depdi,z 1,63-PAGE_SHIFT,1,%r25
- #else
- depwi,z 1,31-PAGE_SHIFT,1,%r25
- #endif
- add %r26,%r25,%r25
- sub %r25,%r23,%r25
- 1: pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- pdc,m %r23(%r26)
- CMPB<< %r26,%r25,1b
- pdc,m %r23(%r26)
- sync
- bv %r0(%r2)
- nop
- .exit
- .procend
- #if 0
- /* Currently not used, but it still is a possible alternate
- * solution.
- */
- .export flush_alias_page
- flush_alias_page:
- .proc
- .callinfo NO_CALLS
- .entry
- tophys_r1 %r26
- ldil L%(TMPALIAS_MAP_START),%r28
- #ifdef __LP64__
- extrd,u %r26,56,32,%r26 /* convert phys addr to tlb insert format */
- depd %r25,63,22,%r28 /* Form aliased virtual address 'to' */
- depdi 0,63,12,%r28 /* Clear any offset bits */
- #else
- extrw,u %r26,24,25,%r26 /* convert phys addr to tlb insert format */
- depw %r25,31,22,%r28 /* Form aliased virtual address 'to' */
- depwi 0,31,12,%r28 /* Clear any offset bits */
- #endif
- /* Purge any old translation */
- pdtlb 0(%r28)
- ldil L%dcache_stride,%r1
- ldw R%dcache_stride(%r1),%r23
- #ifdef __LP64__
- depdi,z 1,63-PAGE_SHIFT,1,%r29
- #else
- depwi,z 1,31-PAGE_SHIFT,1,%r29
- #endif
- add %r28,%r29,%r29
- sub %r29,%r23,%r29
- 1: fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- fdc,m %r23(%r28)
- CMPB<< %r28,%r29,1b
- fdc,m %r23(%r28)
- sync
- bv %r0(%r2)
- nop
- .exit
- .procend
- #endif
- .export flush_user_dcache_range_asm
- flush_user_dcache_range_asm:
- .proc
- .callinfo NO_CALLS
- .entry
- ldil L%dcache_stride,%r1
- ldw R%dcache_stride(%r1),%r23
- ldo -1(%r23),%r21
- ANDCM %r26,%r21,%r26
- 1: CMPB<<,n %r26,%r25,1b
- fdc,m %r23(%sr3,%r26)
- sync
- bv %r0(%r2)
- nop
- .exit
- .procend
- .export flush_kernel_dcache_range_asm
- flush_kernel_dcache_range_asm:
- .proc
- .callinfo NO_CALLS
- .entry
- ldil L%dcache_stride,%r1
- ldw R%dcache_stride(%r1),%r23
- ldo -1(%r23),%r21
- ANDCM %r26,%r21,%r26
- 1: CMPB<<,n %r26,%r25,1b
- fdc,m %r23(%r26)
- sync
- syncdma
- bv %r0(%r2)
- nop
- .exit
- .procend
- .export flush_user_icache_range_asm
- flush_user_icache_range_asm:
- .proc
- .callinfo NO_CALLS
- .entry
- ldil L%icache_stride,%r1
- ldw R%icache_stride(%r1),%r23
- ldo -1(%r23),%r21
- ANDCM %r26,%r21,%r26
- 1: CMPB<<,n %r26,%r25,1b
- fic,m %r23(%sr3,%r26)
- sync
- bv %r0(%r2)
- nop
- .exit
- .procend
- .export flush_kernel_icache_page
- flush_kernel_icache_page:
- .proc
- .callinfo NO_CALLS
- .entry
- ldil L%icache_stride,%r1
- ldw R%icache_stride(%r1),%r23
- #ifdef __LP64__
- depdi,z 1,63-PAGE_SHIFT,1,%r25
- #else
- depwi,z 1,31-PAGE_SHIFT,1,%r25
- #endif
- add %r26,%r25,%r25
- sub %r25,%r23,%r25
- 1: fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- fic,m %r23(%r26)
- CMPB<< %r26,%r25,1b
- fic,m %r23(%r26)
- sync
- bv %r0(%r2)
- nop
- .exit
- .procend
- .export flush_kernel_icache_range_asm
- flush_kernel_icache_range_asm:
- .proc
- .callinfo NO_CALLS
- .entry
- ldil L%icache_stride,%r1
- ldw R%icache_stride(%r1),%r23
- ldo -1(%r23),%r21
- ANDCM %r26,%r21,%r26
- 1: CMPB<<,n %r26,%r25,1b
- fic,m %r23(%r26)
- sync
- bv %r0(%r2)
- nop
- .exit
- .procend
- .align 128
- .export disable_sr_hashing_asm,code
- disable_sr_hashing_asm:
- .proc
- .callinfo NO_CALLS
- .entry
- /* Switch to real mode */
- ssm 0,%r0 /* relied upon translation! */
- nop
- nop
- nop
- nop
- nop
- nop
- nop
-
- rsm (PSW_SM_Q|PSW_SM_I),%r0 /* disable Q&I to load the iia queue */
- ldil L%REAL_MODE_PSW, %r1
- ldo R%REAL_MODE_PSW(%r1), %r1
- mtctl %r1, %cr22
- mtctl %r0, %cr17
- mtctl %r0, %cr17
- ldil L%PA(1f),%r1
- ldo R%PA(1f)(%r1),%r1
- mtctl %r1, %cr18
- ldo 4(%r1), %r1
- mtctl %r1, %cr18
- rfi
- nop
- 1: cmpib,=,n SRHASH_PCXST,%r26,srdis_pcxs
- cmpib,=,n SRHASH_PCXL,%r26,srdis_pcxl
- cmpib,=,n SRHASH_PA20,%r26,srdis_pa20
- b,n srdis_done
- srdis_pcxs:
- /* Disable Space Register Hashing for PCXS,PCXT,PCXT' */
- .word 0x141c1a00 /* mfdiag %dr0,%r28 */
- .word 0x141c1a00 /* must issue twice */
- depwi 0,18,1,%r28 /* Clear DHE (dcache hash enable) */
- depwi 0,20,1,%r28 /* Clear IHE (icache hash enable) */
- .word 0x141c1600 /* mtdiag %r28,%dr0 */
- .word 0x141c1600 /* must issue twice */
- b,n srdis_done
- srdis_pcxl:
- /* Disable Space Register Hashing for PCXL */
- .word 0x141c0600 /* mfdiag %dr0,%r28 */
- depwi 0,28,2,%r28 /* Clear DHASH_EN & IHASH_EN */
- .word 0x141c0240 /* mtdiag %r28,%dr0 */
- b,n srdis_done
- srdis_pa20:
- /* Disable Space Register Hashing for PCXU,PCXU+,PCXW,PCXW+ */
- .word 0x144008bc /* mfdiag %dr2,%r28 */
- depdi 0,54,1,%r28 /* clear DIAG_SPHASH_ENAB (bit 54) */
- .word 0x145c1840 /* mtdiag %r28,%dr2 */
- srdis_done:
- /* Switch back to virtual mode */
- rsm PSW_SM_Q,%r0 /* clear Q bit to load iia queue */
- ldil L%KERNEL_PSW, %r1
- ldo R%KERNEL_PSW(%r1), %r1
- mtctl %r1, %cr22
- mtctl %r0, %cr17
- mtctl %r0, %cr17
- ldil L%(2f), %r1
- ldo R%(2f)(%r1), %r1
- mtctl %r1, %cr18
- ldo 4(%r1), %r1
- mtctl %r1, %cr18
- rfi
- nop
- 2: bv %r0(%r2)
- nop
- .exit
- .procend
- .end