Merge branch 'tmpalias-flush' into for-next

arch/parisc/include/asm/cacheflush.h

@@ -26,8 +26,6 @@ void flush_user_dcache_range_asm(unsigned long, unsigned long);
 void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
 void flush_kernel_dcache_page_asm(void *);
 void flush_kernel_icache_page(void *);
-void flush_user_dcache_page(unsigned long);
-void flush_user_icache_page(unsigned long);
 void flush_user_dcache_range(unsigned long, unsigned long);
 void flush_user_icache_range(unsigned long, unsigned long);
 
@@ -90,12 +88,15 @@ void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned
 void flush_cache_range(struct vm_area_struct *vma,
 		unsigned long start, unsigned long end);
 
+/* defined in pacache.S exported in cache.c used by flush_anon_page */
+void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
+
 #define ARCH_HAS_FLUSH_ANON_PAGE
 static inline void
 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
 {
 	if (PageAnon(page))
-		flush_user_dcache_page(vmaddr);
+		flush_dcache_page_asm(page_to_phys(page), vmaddr);
 }
 
 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE

arch/parisc/include/asm/pgtable.h

@@ -138,8 +138,7 @@ struct vm_area_struct;
 #define _PAGE_NO_CACHE_BIT 24   /* (0x080) Uncached Page (U bit) */
 #define _PAGE_ACCESSED_BIT 23   /* (0x100) Software: Page Accessed */
 #define _PAGE_PRESENT_BIT  22   /* (0x200) Software: translation valid */
-#define _PAGE_FLUSH_BIT    21   /* (0x400) Software: translation valid */
-				/*             for cache flushing only */
+/* bit 21 was formerly the FLUSH bit but is now unused */
 #define _PAGE_USER_BIT     20   /* (0x800) Software: User accessible page */
 
 /* N.B. The bits are defined in terms of a 32 bit word above, so the */
@@ -173,7 +172,6 @@ struct vm_area_struct;
 #define _PAGE_NO_CACHE (1 << xlate_pabit(_PAGE_NO_CACHE_BIT))
 #define _PAGE_ACCESSED (1 << xlate_pabit(_PAGE_ACCESSED_BIT))
 #define _PAGE_PRESENT  (1 << xlate_pabit(_PAGE_PRESENT_BIT))
-#define _PAGE_FLUSH    (1 << xlate_pabit(_PAGE_FLUSH_BIT))
 #define _PAGE_USER     (1 << xlate_pabit(_PAGE_USER_BIT))
 #define _PAGE_FILE     (1 << xlate_pabit(_PAGE_FILE_BIT))
 
@@ -213,7 +211,6 @@ struct vm_area_struct;
 #define PAGE_KERNEL_RO	__pgprot(_PAGE_KERNEL & ~_PAGE_WRITE)
 #define PAGE_KERNEL_UNC	__pgprot(_PAGE_KERNEL | _PAGE_NO_CACHE)
 #define PAGE_GATEWAY    __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_GATEWAY| _PAGE_READ)
-#define PAGE_FLUSH      __pgprot(_PAGE_FLUSH)
 
 
 /*
@@ -261,7 +258,7 @@ extern unsigned long *empty_zero_page;
 
 #define ZERO_PAGE(vaddr) (virt_to_page(empty_zero_page))
 
-#define pte_none(x)     ((pte_val(x) == 0) || (pte_val(x) & _PAGE_FLUSH))
+#define pte_none(x)     (pte_val(x) == 0)
 #define pte_present(x)	(pte_val(x) & _PAGE_PRESENT)
 #define pte_clear(mm,addr,xp)	do { pte_val(*(xp)) = 0; } while (0)
 
@@ -444,13 +441,10 @@ struct mm_struct;
 static inline pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
 	pte_t old_pte;
-	pte_t pte;
 
 	spin_lock(&pa_dbit_lock);
-	pte = old_pte = *ptep;
-	pte_val(pte) &= ~_PAGE_PRESENT;
-	pte_val(pte) |= _PAGE_FLUSH;
-	set_pte_at(mm,addr,ptep,pte);
+	old_pte = *ptep;
+	pte_clear(mm,addr,ptep);
 	spin_unlock(&pa_dbit_lock);
 
 	return old_pte;

arch/parisc/kernel/cache.c

@@ -27,12 +27,17 @@
 #include <asm/pgalloc.h>
 #include <asm/processor.h>
 #include <asm/sections.h>
+#include <asm/shmparam.h>
 
 int split_tlb __read_mostly;
 int dcache_stride __read_mostly;
 int icache_stride __read_mostly;
 EXPORT_SYMBOL(dcache_stride);
 
+void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr);
+EXPORT_SYMBOL(flush_dcache_page_asm);
+void flush_icache_page_asm(unsigned long phys_addr, unsigned long vaddr);
+
 
 /* On some machines (e.g. ones with the Merced bus), there can be
  * only a single PxTLB broadcast at a time; this must be guaranteed
@@ -259,81 +264,13 @@ void disable_sr_hashing(void)
 		panic("SpaceID hashing is still on!\n");
 }
 
-/* Simple function to work out if we have an existing address translation
- * for a user space vma. */
-static inline int translation_exists(struct vm_area_struct *vma,
-				unsigned long addr, unsigned long pfn)
-{
-	pgd_t *pgd = pgd_offset(vma->vm_mm, addr);
-	pmd_t *pmd;
-	pte_t pte;
-
-	if(pgd_none(*pgd))
-		return 0;
-
-	pmd = pmd_offset(pgd, addr);
-	if(pmd_none(*pmd) || pmd_bad(*pmd))
-		return 0;
-
-	/* We cannot take the pte lock here: flush_cache_page is usually
-	 * called with pte lock already held.  Whereas flush_dcache_page
-	 * takes flush_dcache_mmap_lock, which is lower in the hierarchy:
-	 * the vma itself is secure, but the pte might come or go racily.
-	 */
-	pte = *pte_offset_map(pmd, addr);
-	/* But pte_unmap() does nothing on this architecture */
-
-	/* Filter out coincidental file entries and swap entries */
-	if (!(pte_val(pte) & (_PAGE_FLUSH|_PAGE_PRESENT)))
-		return 0;
-
-	return pte_pfn(pte) == pfn;
-}
-
-/* Private function to flush a page from the cache of a non-current
- * process.  cr25 contains the Page Directory of the current user
- * process; we're going to hijack both it and the user space %sr3 to
- * temporarily make the non-current process current.  We have to do
- * this because cache flushing may cause a non-access tlb miss which
- * the handlers have to fill in from the pgd of the non-current
- * process. */
 static inline void
-flush_user_cache_page_non_current(struct vm_area_struct *vma,
-				  unsigned long vmaddr)
+__flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr,
+		   unsigned long physaddr)
 {
-	/* save the current process space and pgd */
-	unsigned long space = mfsp(3), pgd = mfctl(25);
-
-	/* we don't mind taking interrupts since they may not
-	 * do anything with user space, but we can't
-	 * be preempted here */
-	preempt_disable();
-
-	/* make us current */
-	mtctl(__pa(vma->vm_mm->pgd), 25);
-	mtsp(vma->vm_mm->context, 3);
-
-	flush_user_dcache_page(vmaddr);
-	if(vma->vm_flags & VM_EXEC)
-		flush_user_icache_page(vmaddr);
-
-	/* put the old current process back */
-	mtsp(space, 3);
-	mtctl(pgd, 25);
-	preempt_enable();
-}
-
-
-static inline void
-__flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr)
-{
-	if (likely(vma->vm_mm->context == mfsp(3))) {
-		flush_user_dcache_page(vmaddr);
-		if (vma->vm_flags & VM_EXEC)
-			flush_user_icache_page(vmaddr);
-	} else {
-		flush_user_cache_page_non_current(vma, vmaddr);
-	}
+	flush_dcache_page_asm(physaddr, vmaddr);
+	if (vma->vm_flags & VM_EXEC)
+		flush_icache_page_asm(physaddr, vmaddr);
 }
 
 void flush_dcache_page(struct page *page)
@@ -342,10 +279,8 @@ void flush_dcache_page(struct page *page)
 	struct vm_area_struct *mpnt;
 	struct prio_tree_iter iter;
 	unsigned long offset;
-	unsigned long addr;
+	unsigned long addr, old_addr = 0;
 	pgoff_t pgoff;
-	unsigned long pfn = page_to_pfn(page);
-
 
 	if (mapping && !mapping_mapped(mapping)) {
 		set_bit(PG_dcache_dirty, &page->flags);
@@ -369,20 +304,11 @@ void flush_dcache_page(struct page *page)
 		offset = (pgoff - mpnt->vm_pgoff) << PAGE_SHIFT;
 		addr = mpnt->vm_start + offset;
 
-		/* Flush instructions produce non access tlb misses.
-		 * On PA, we nullify these instructions rather than
-		 * taking a page fault if the pte doesn't exist.
-		 * This is just for speed.  If the page translation
-		 * isn't there, there's no point exciting the
-		 * nadtlb handler into a nullification frenzy.
-		 *
-		 * Make sure we really have this page: the private
-		 * mappings may cover this area but have COW'd this
-		 * particular page.
-		 */
-  		if (translation_exists(mpnt, addr, pfn)) {
-			__flush_cache_page(mpnt, addr);
-			break;
+		if (old_addr == 0 || (old_addr & (SHMLBA - 1)) != (addr & (SHMLBA - 1))) {
+			__flush_cache_page(mpnt, addr, page_to_phys(page));
+			if (old_addr)
+				printk(KERN_ERR "INEQUIVALENT ALIASES 0x%lx and 0x%lx in file %s\n", old_addr, addr, mpnt->vm_file ? mpnt->vm_file->f_path.dentry->d_name.name : "(null)");
+			old_addr = addr;
 		}
 	}
 	flush_dcache_mmap_unlock(mapping);
@@ -573,7 +499,6 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long
 {
 	BUG_ON(!vma->vm_mm->context);
 
-	if (likely(translation_exists(vma, vmaddr, pfn)))
-		__flush_cache_page(vma, vmaddr);
+	__flush_cache_page(vma, vmaddr, page_to_phys(pfn_to_page(pfn)));
 
 }

arch/parisc/kernel/entry.S

@@ -225,22 +225,13 @@
 #ifndef CONFIG_64BIT
 	/*
 	 * naitlb miss interruption handler (parisc 1.1 - 32 bit)
-	 *
-	 * Note: naitlb misses will be treated
-	 * as an ordinary itlb miss for now.
-	 * However, note that naitlb misses
-	 * have the faulting address in the
-	 * IOR/ISR.
 	 */
 
 	.macro	naitlb_11 code
 
 	mfctl	%isr,spc
-	b	itlb_miss_11
+	b	naitlb_miss_11
 	mfctl 	%ior,va
-	/* FIXME: If user causes a naitlb miss, the priv level may not be in
-	 * lower bits of va, where the itlb miss handler is expecting them
-	 */
 
 	.align		32
 	.endm
@@ -248,26 +239,17 @@
 	
 	/*
 	 * naitlb miss interruption handler (parisc 2.0)
-	 *
-	 * Note: naitlb misses will be treated
-	 * as an ordinary itlb miss for now.
-	 * However, note that naitlb misses
-	 * have the faulting address in the
-	 * IOR/ISR.
 	 */
 
 	.macro	naitlb_20 code
 
 	mfctl	%isr,spc
 #ifdef CONFIG_64BIT
-	b       itlb_miss_20w
+	b       naitlb_miss_20w
 #else
-	b	itlb_miss_20
+	b	naitlb_miss_20
 #endif
 	mfctl 	%ior,va
-	/* FIXME: If user causes a naitlb miss, the priv level may not be in
-	 * lower bits of va, where the itlb miss handler is expecting them
-	 */
 
 	.align		32
 	.endm
@@ -581,7 +563,24 @@
 	copy		\va,\tmp1
 	depi		0,31,23,\tmp1
 	cmpb,COND(<>),n	\tmp,\tmp1,\fault
-	ldi		(_PAGE_DIRTY|_PAGE_WRITE|_PAGE_READ),\prot
+	mfctl		%cr19,\tmp	/* iir */
+	/* get the opcode (first six bits) into \tmp */
+	extrw,u		\tmp,5,6,\tmp
+	/*
+	 * Only setting the T bit prevents data cache movein
+	 * Setting access rights to zero prevents instruction cache movein
+	 *
+	 * Note subtlety here: _PAGE_GATEWAY, _PAGE_EXEC and _PAGE_WRITE go
+	 * to type field and _PAGE_READ goes to top bit of PL1
+	 */
+	ldi		(_PAGE_REFTRAP|_PAGE_READ|_PAGE_WRITE),\prot
+	/*
+	 * so if the opcode is one (i.e. this is a memory management
+	 * instruction) nullify the next load so \prot is only T.
+	 * Otherwise this is a normal data operation
+	 */
+	cmpiclr,=	0x01,\tmp,%r0
+	ldi		(_PAGE_DIRTY|_PAGE_READ|_PAGE_WRITE),\prot
 	depd,z		\prot,8,7,\prot
 	/*
 	 * OK, it is in the temp alias region, check whether "from" or "to".
@@ -631,11 +630,7 @@ ENTRY(fault_vector_20)
 	def		13
 	def		14
 	dtlb_20		15
-#if 0
 	naitlb_20	16
-#else
-	def             16
-#endif
 	nadtlb_20	17
 	def		18
 	def		19
@@ -678,11 +673,7 @@ ENTRY(fault_vector_11)
 	def		13
 	def		14
 	dtlb_11		15
-#if 0
 	naitlb_11	16
-#else
-	def             16
-#endif
 	nadtlb_11	17
 	def		18
 	def		19
@@ -1203,7 +1194,7 @@ nadtlb_miss_20w:
 	get_pgd		spc,ptp
 	space_check	spc,t0,nadtlb_fault
 
-	L3_ptep		ptp,pte,t0,va,nadtlb_check_flush_20w
+	L3_ptep		ptp,pte,t0,va,nadtlb_check_alias_20w
 
 	update_ptep	ptp,pte,t0,t1
 
@@ -1214,16 +1205,8 @@ nadtlb_miss_20w:
 	rfir
 	nop
 
-nadtlb_check_flush_20w:
-	bb,>=,n          pte,_PAGE_FLUSH_BIT,nadtlb_emulate
-
-	/* Insert a "flush only" translation */
-
-	depdi,z         7,7,3,prot
-	depdi           1,10,1,prot
-
-	/* Drop prot bits from pte and convert to page addr for idtlbt */
-	convert_for_tlb_insert20 pte
+nadtlb_check_alias_20w:
+	do_alias	spc,t0,t1,va,pte,prot,nadtlb_emulate
 
 	idtlbt          pte,prot
 
@@ -1255,25 +1238,7 @@ dtlb_miss_11:
 	nop
 
 dtlb_check_alias_11:
-
-	/* Check to see if fault is in the temporary alias region */
-
-	cmpib,<>,n      0,spc,dtlb_fault /* forward */
-	ldil            L%(TMPALIAS_MAP_START),t0
-	copy            va,t1
-	depwi           0,31,23,t1
-	cmpb,<>,n       t0,t1,dtlb_fault /* forward */
-	ldi             (_PAGE_DIRTY|_PAGE_WRITE|_PAGE_READ),prot
-	depw,z          prot,8,7,prot
-
-	/*
-	 * OK, it is in the temp alias region, check whether "from" or "to".
-	 * Check "subtle" note in pacache.S re: r23/r26.
-	 */
-
-	extrw,u,=       va,9,1,r0
-	or,tr           %r23,%r0,pte    /* If "from" use "from" page */
-	or              %r26,%r0,pte    /* else "to", use "to" page  */
+	do_alias	spc,t0,t1,va,pte,prot,dtlb_fault
 
 	idtlba          pte,(va)
 	idtlbp          prot,(va)
@@ -1286,7 +1251,7 @@ nadtlb_miss_11:
 
 	space_check	spc,t0,nadtlb_fault
 
-	L2_ptep		ptp,pte,t0,va,nadtlb_check_flush_11
+	L2_ptep		ptp,pte,t0,va,nadtlb_check_alias_11
 
 	update_ptep	ptp,pte,t0,t1
 
@@ -1304,26 +1269,11 @@ nadtlb_miss_11:
 	rfir
 	nop
 
-nadtlb_check_flush_11:
-	bb,>=,n          pte,_PAGE_FLUSH_BIT,nadtlb_emulate
-
-	/* Insert a "flush only" translation */
-
-	zdepi           7,7,3,prot
-	depi            1,10,1,prot
+nadtlb_check_alias_11:
+	do_alias	spc,t0,t1,va,pte,prot,nadtlb_emulate
 
-	/* Get rid of prot bits and convert to page addr for idtlba */
-
-	depi		0,31,ASM_PFN_PTE_SHIFT,pte
-	SHRREG		pte,(ASM_PFN_PTE_SHIFT-(31-26)),pte
-
-	mfsp		%sr1,t0  /* Save sr1 so we can use it in tlb inserts */
-	mtsp		spc,%sr1
-
-	idtlba		pte,(%sr1,va)
-	idtlbp		prot,(%sr1,va)
-
-	mtsp		t0, %sr1	/* Restore sr1 */
+	idtlba          pte,(va)
+	idtlbp          prot,(va)
 
 	rfir
 	nop
@@ -1359,7 +1309,7 @@ nadtlb_miss_20:
 
 	space_check	spc,t0,nadtlb_fault
 
-	L2_ptep		ptp,pte,t0,va,nadtlb_check_flush_20
+	L2_ptep		ptp,pte,t0,va,nadtlb_check_alias_20
 
 	update_ptep	ptp,pte,t0,t1
 
@@ -1372,21 +1322,14 @@ nadtlb_miss_20:
 	rfir
 	nop
 
-nadtlb_check_flush_20:
-	bb,>=,n          pte,_PAGE_FLUSH_BIT,nadtlb_emulate
-
-	/* Insert a "flush only" translation */
-
-	depdi,z         7,7,3,prot
-	depdi           1,10,1,prot
-
-	/* Drop prot bits from pte and convert to page addr for idtlbt */
-	convert_for_tlb_insert20 pte
+nadtlb_check_alias_20:
+	do_alias	spc,t0,t1,va,pte,prot,nadtlb_emulate
 
 	idtlbt          pte,prot
 
 	rfir
 	nop
+
 #endif
 
 nadtlb_emulate:
@@ -1484,6 +1427,36 @@ itlb_miss_20w:
 	rfir
 	nop
 
+naitlb_miss_20w:
+
+	/*
+	 * I miss is a little different, since we allow users to fault
+	 * on the gateway page which is in the kernel address space.
+	 */
+
+	space_adjust	spc,va,t0
+	get_pgd		spc,ptp
+	space_check	spc,t0,naitlb_fault
+
+	L3_ptep		ptp,pte,t0,va,naitlb_check_alias_20w
+
+	update_ptep	ptp,pte,t0,t1
+
+	make_insert_tlb	spc,pte,prot
+
+	iitlbt          pte,prot
+
+	rfir
+	nop
+
+naitlb_check_alias_20w:
+	do_alias	spc,t0,t1,va,pte,prot,naitlb_fault
+
+	iitlbt		pte,prot
+
+	rfir
+	nop
+
 #else
 
 itlb_miss_11:
@@ -1508,6 +1481,38 @@ itlb_miss_11:
 	rfir
 	nop
 
+naitlb_miss_11:
+	get_pgd		spc,ptp
+
+	space_check	spc,t0,naitlb_fault
+
+	L2_ptep		ptp,pte,t0,va,naitlb_check_alias_11
+
+	update_ptep	ptp,pte,t0,t1
+
+	make_insert_tlb_11	spc,pte,prot
+
+	mfsp		%sr1,t0  /* Save sr1 so we can use it in tlb inserts */
+	mtsp		spc,%sr1
+
+	iitlba		pte,(%sr1,va)
+	iitlbp		prot,(%sr1,va)
+
+	mtsp		t0, %sr1	/* Restore sr1 */
+
+	rfir
+	nop
+
+naitlb_check_alias_11:
+	do_alias	spc,t0,t1,va,pte,prot,itlb_fault
+
+	iitlba          pte,(%sr0, va)
+	iitlbp          prot,(%sr0, va)
+
+	rfir
+	nop
+
+
 itlb_miss_20:
 	get_pgd		spc,ptp
 
@@ -1526,6 +1531,32 @@ itlb_miss_20:
 	rfir
 	nop
 
+naitlb_miss_20:
+	get_pgd		spc,ptp
+
+	space_check	spc,t0,naitlb_fault
+
+	L2_ptep		ptp,pte,t0,va,naitlb_check_alias_20
+
+	update_ptep	ptp,pte,t0,t1
+
+	make_insert_tlb	spc,pte,prot
+
+	f_extend	pte,t0
+
+	iitlbt          pte,prot
+
+	rfir
+	nop
+
+naitlb_check_alias_20:
+	do_alias	spc,t0,t1,va,pte,prot,naitlb_fault
+
+	iitlbt          pte,prot
+
+	rfir
+	nop
+
 #endif
 
 #ifdef CONFIG_64BIT
@@ -1662,6 +1693,10 @@ nadtlb_fault:
 	b               intr_save
 	ldi             17,%r8
 
+naitlb_fault:
+	b               intr_save
+	ldi             16,%r8
+
 dtlb_fault:
 	b               intr_save
 	ldi             15,%r8

arch/parisc/kernel/pacache.S

@@ -608,93 +608,131 @@ ENTRY(__clear_user_page_asm)
 	.procend
 ENDPROC(__clear_user_page_asm)
 
-ENTRY(flush_kernel_dcache_page_asm)
+ENTRY(flush_dcache_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
 
+	ldil		L%(TMPALIAS_MAP_START), %r28
+#ifdef CONFIG_64BIT
+#if (TMPALIAS_MAP_START >= 0x80000000)
+	depdi		0, 31,32, %r28		/* clear any sign extension */
+	/* FIXME: page size dependend */
+#endif
+	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
+	ldw		R%dcache_stride(%r1), %r1
 
 #ifdef CONFIG_64BIT
 	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,COND(<<)		%r26, %r25,1b
-	fdc,m		%r23(%r26)
+	add		%r28, %r25, %r25
+	sub		%r25, %r1, %r25
+
+
+1:      fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	fdc,m		%r1(%r28)
+	cmpb,COND(<<)		%r28, %r25,1b
+	fdc,m		%r1(%r28)
 
 	sync
 	bv		%r0(%r2)
-	nop
+	pdtlb		(%r25)
 	.exit
 
 	.procend
-ENDPROC(flush_kernel_dcache_page_asm)
-	
-ENTRY(flush_user_dcache_page)
+ENDPROC(flush_dcache_page_asm)
+
+ENTRY(flush_icache_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
 
-	ldil		L%dcache_stride, %r1
-	ldw		R%dcache_stride(%r1), %r23
-
+	ldil		L%(TMPALIAS_MAP_START), %r28
 #ifdef CONFIG_64BIT
-	depdi,z		1,63-PAGE_SHIFT,1, %r25
+#if (TMPALIAS_MAP_START >= 0x80000000)
+	depdi		0, 31,32, %r28		/* clear any sign extension */
+	/* FIXME: page size dependend */
+#endif
+	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
-	depwi,z		1,31-PAGE_SHIFT,1, %r25
+	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
-	add		%r26, %r25, %r25
-	sub		%r25, %r23, %r25
 
+	/* Purge any old translation */
 
-1:      fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	fdc,m		%r23(%sr3, %r26)
-	cmpb,COND(<<)		%r26, %r25,1b
-	fdc,m		%r23(%sr3, %r26)
+	pitlb		(%sr0,%r28)
+
+	ldil		L%icache_stride, %r1
+	ldw		R%icache_stride(%r1), %r1
+
+#ifdef CONFIG_64BIT
+	depdi,z		1, 63-PAGE_SHIFT,1, %r25
+#else
+	depwi,z		1, 31-PAGE_SHIFT,1, %r25
+#endif
+	add		%r28, %r25, %r25
+	sub		%r25, %r1, %r25
+
+
+1:      fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	fic,m		%r1(%r28)
+	cmpb,COND(<<)		%r28, %r25,1b
+	fic,m		%r1(%r28)
 
 	sync
 	bv		%r0(%r2)
-	nop
+	pitlb		(%sr0,%r25)
 	.exit
 
 	.procend
-ENDPROC(flush_user_dcache_page)
+ENDPROC(flush_icache_page_asm)
 
-ENTRY(flush_user_icache_page)
+ENTRY(flush_kernel_dcache_page_asm)
 	.proc
 	.callinfo NO_CALLS
 	.entry
@@ -711,23 +749,23 @@ ENTRY(flush_user_icache_page)
 	sub		%r25, %r23, %r25
 
 
-1:      fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
-	fic,m		%r23(%sr3, %r26)
+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,COND(<<)		%r26, %r25,1b
-	fic,m		%r23(%sr3, %r26)
+	fdc,m		%r23(%r26)
 
 	sync
 	bv		%r0(%r2)
@@ -735,8 +773,7 @@ ENTRY(flush_user_icache_page)
 	.exit
 
 	.procend
-ENDPROC(flush_user_icache_page)
-
+ENDPROC(flush_kernel_dcache_page_asm)
 
 ENTRY(purge_kernel_dcache_page)
 	.proc
@@ -780,69 +817,6 @@ ENTRY(purge_kernel_dcache_page)
 	.procend
 ENDPROC(purge_kernel_dcache_page)
 
-#if 0
-	/* Currently not used, but it still is a possible alternate
-	 * solution.
-	 */
-
-ENTRY(flush_alias_page)
-	.proc
-	.callinfo NO_CALLS
-	.entry
-
-	tophys_r1		%r26
-
-	ldil		L%(TMPALIAS_MAP_START), %r28
-#ifdef CONFIG_64BIT
-	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 CONFIG_64BIT
-	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,COND(<<)		%r28, %r29, 1b
-	fdc,m		%r23(%r28)
-
-	sync
-	bv		%r0(%r2)
-	nop
-	.exit
-
-	.procend
-#endif
 
 	.export flush_user_dcache_range_asm
 
@@ -865,7 +839,6 @@ flush_user_dcache_range_asm:
 	.exit
 
 	.procend
-ENDPROC(flush_alias_page)
 
 ENTRY(flush_kernel_dcache_range_asm)
 	.proc