sparc32: Remove cypress cpu support.

It's the one aberration in v8, the only cpu that
didn't actually have hardware multiply and divide
instructions.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Sam Ravnborg <sam@ravnborg.org>

1 files changed, 2 insertions, 331 deletions

diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index 765b1a5..4875fcd 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -577,244 +577,6 @@ void swift_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
  * with respect to cache coherency.
  */
 
-/* Cypress flushes. */
-static void cypress_flush_cache_all(void)
-{
-	volatile unsigned long cypress_sucks;
-	unsigned long faddr, tagval;
-
-	flush_user_windows();
-	for(faddr = 0; faddr < 0x10000; faddr += 0x20) {
-		__asm__ __volatile__("lda [%1 + %2] %3, %0\n\t" :
-				     "=r" (tagval) :
-				     "r" (faddr), "r" (0x40000),
-				     "i" (ASI_M_DATAC_TAG));
-
-		/* If modified and valid, kick it. */
-		if((tagval & 0x60) == 0x60)
-			cypress_sucks = *(unsigned long *)(0xf0020000 + faddr);
-	}
-}
-
-static void cypress_flush_cache_mm(struct mm_struct *mm)
-{
-	register unsigned long a, b, c, d, e, f, g;
-	unsigned long flags, faddr;
-	int octx;
-
-	FLUSH_BEGIN(mm)
-	flush_user_windows();
-	local_irq_save(flags);
-	octx = srmmu_get_context();
-	srmmu_set_context(mm->context);
-	a = 0x20; b = 0x40; c = 0x60;
-	d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
-	faddr = (0x10000 - 0x100);
-	goto inside;
-	do {
-		faddr -= 0x100;
-	inside:
-		__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
-				     "sta %%g0, [%0 + %2] %1\n\t"
-				     "sta %%g0, [%0 + %3] %1\n\t"
-				     "sta %%g0, [%0 + %4] %1\n\t"
-				     "sta %%g0, [%0 + %5] %1\n\t"
-				     "sta %%g0, [%0 + %6] %1\n\t"
-				     "sta %%g0, [%0 + %7] %1\n\t"
-				     "sta %%g0, [%0 + %8] %1\n\t" : :
-				     "r" (faddr), "i" (ASI_M_FLUSH_CTX),
-				     "r" (a), "r" (b), "r" (c), "r" (d),
-				     "r" (e), "r" (f), "r" (g));
-	} while(faddr);
-	srmmu_set_context(octx);
-	local_irq_restore(flags);
-	FLUSH_END
-}
-
-static void cypress_flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	register unsigned long a, b, c, d, e, f, g;
-	unsigned long flags, faddr;
-	int octx;
-
-	FLUSH_BEGIN(mm)
-	flush_user_windows();
-	local_irq_save(flags);
-	octx = srmmu_get_context();
-	srmmu_set_context(mm->context);
-	a = 0x20; b = 0x40; c = 0x60;
-	d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
-	start &= SRMMU_REAL_PMD_MASK;
-	while(start < end) {
-		faddr = (start + (0x10000 - 0x100));
-		goto inside;
-		do {
-			faddr -= 0x100;
-		inside:
-			__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
-					     "sta %%g0, [%0 + %2] %1\n\t"
-					     "sta %%g0, [%0 + %3] %1\n\t"
-					     "sta %%g0, [%0 + %4] %1\n\t"
-					     "sta %%g0, [%0 + %5] %1\n\t"
-					     "sta %%g0, [%0 + %6] %1\n\t"
-					     "sta %%g0, [%0 + %7] %1\n\t"
-					     "sta %%g0, [%0 + %8] %1\n\t" : :
-					     "r" (faddr),
-					     "i" (ASI_M_FLUSH_SEG),
-					     "r" (a), "r" (b), "r" (c), "r" (d),
-					     "r" (e), "r" (f), "r" (g));
-		} while (faddr != start);
-		start += SRMMU_REAL_PMD_SIZE;
-	}
-	srmmu_set_context(octx);
-	local_irq_restore(flags);
-	FLUSH_END
-}
-
-static void cypress_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
-{
-	register unsigned long a, b, c, d, e, f, g;
-	struct mm_struct *mm = vma->vm_mm;
-	unsigned long flags, line;
-	int octx;
-
-	FLUSH_BEGIN(mm)
-	flush_user_windows();
-	local_irq_save(flags);
-	octx = srmmu_get_context();
-	srmmu_set_context(mm->context);
-	a = 0x20; b = 0x40; c = 0x60;
-	d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-
-	page &= PAGE_MASK;
-	line = (page + PAGE_SIZE) - 0x100;
-	goto inside;
-	do {
-		line -= 0x100;
-	inside:
-			__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
-					     "sta %%g0, [%0 + %2] %1\n\t"
-					     "sta %%g0, [%0 + %3] %1\n\t"
-					     "sta %%g0, [%0 + %4] %1\n\t"
-					     "sta %%g0, [%0 + %5] %1\n\t"
-					     "sta %%g0, [%0 + %6] %1\n\t"
-					     "sta %%g0, [%0 + %7] %1\n\t"
-					     "sta %%g0, [%0 + %8] %1\n\t" : :
-					     "r" (line),
-					     "i" (ASI_M_FLUSH_PAGE),
-					     "r" (a), "r" (b), "r" (c), "r" (d),
-					     "r" (e), "r" (f), "r" (g));
-	} while(line != page);
-	srmmu_set_context(octx);
-	local_irq_restore(flags);
-	FLUSH_END
-}
-
-/* Cypress is copy-back, at least that is how we configure it. */
-static void cypress_flush_page_to_ram(unsigned long page)
-{
-	register unsigned long a, b, c, d, e, f, g;
-	unsigned long line;
-
-	a = 0x20; b = 0x40; c = 0x60; d = 0x80; e = 0xa0; f = 0xc0; g = 0xe0;
-	page &= PAGE_MASK;
-	line = (page + PAGE_SIZE) - 0x100;
-	goto inside;
-	do {
-		line -= 0x100;
-	inside:
-		__asm__ __volatile__("sta %%g0, [%0] %1\n\t"
-				     "sta %%g0, [%0 + %2] %1\n\t"
-				     "sta %%g0, [%0 + %3] %1\n\t"
-				     "sta %%g0, [%0 + %4] %1\n\t"
-				     "sta %%g0, [%0 + %5] %1\n\t"
-				     "sta %%g0, [%0 + %6] %1\n\t"
-				     "sta %%g0, [%0 + %7] %1\n\t"
-				     "sta %%g0, [%0 + %8] %1\n\t" : :
-				     "r" (line),
-				     "i" (ASI_M_FLUSH_PAGE),
-				     "r" (a), "r" (b), "r" (c), "r" (d),
-				     "r" (e), "r" (f), "r" (g));
-	} while(line != page);
-}
-
-/* Cypress is also IO cache coherent. */
-static void cypress_flush_page_for_dma(unsigned long page)
-{
-}
-
-/* Cypress has unified L2 VIPT, from which both instructions and data
- * are stored.  It does not have an onboard icache of any sort, therefore
- * no flush is necessary.
- */
-static void cypress_flush_sig_insns(struct mm_struct *mm, unsigned long insn_addr)
-{
-}
-
-static void cypress_flush_tlb_all(void)
-{
-	srmmu_flush_whole_tlb();
-}
-
-static void cypress_flush_tlb_mm(struct mm_struct *mm)
-{
-	FLUSH_BEGIN(mm)
-	__asm__ __volatile__(
-	"lda	[%0] %3, %%g5\n\t"
-	"sta	%2, [%0] %3\n\t"
-	"sta	%%g0, [%1] %4\n\t"
-	"sta	%%g5, [%0] %3\n"
-	: /* no outputs */
-	: "r" (SRMMU_CTX_REG), "r" (0x300), "r" (mm->context),
-	  "i" (ASI_M_MMUREGS), "i" (ASI_M_FLUSH_PROBE)
-	: "g5");
-	FLUSH_END
-}
-
-static void cypress_flush_tlb_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
-	struct mm_struct *mm = vma->vm_mm;
-	unsigned long size;
-
-	FLUSH_BEGIN(mm)
-	start &= SRMMU_PGDIR_MASK;
-	size = SRMMU_PGDIR_ALIGN(end) - start;
-	__asm__ __volatile__(
-		"lda	[%0] %5, %%g5\n\t"
-		"sta	%1, [%0] %5\n"
-		"1:\n\t"
-		"subcc	%3, %4, %3\n\t"
-		"bne	1b\n\t"
-		" sta	%%g0, [%2 + %3] %6\n\t"
-		"sta	%%g5, [%0] %5\n"
-	: /* no outputs */
-	: "r" (SRMMU_CTX_REG), "r" (mm->context), "r" (start | 0x200),
-	  "r" (size), "r" (SRMMU_PGDIR_SIZE), "i" (ASI_M_MMUREGS),
-	  "i" (ASI_M_FLUSH_PROBE)
-	: "g5", "cc");
-	FLUSH_END
-}
-
-static void cypress_flush_tlb_page(struct vm_area_struct *vma, unsigned long page)
-{
-	struct mm_struct *mm = vma->vm_mm;
-
-	FLUSH_BEGIN(mm)
-	__asm__ __volatile__(
-	"lda	[%0] %3, %%g5\n\t"
-	"sta	%1, [%0] %3\n\t"
-	"sta	%%g0, [%2] %4\n\t"
-	"sta	%%g5, [%0] %3\n"
-	: /* no outputs */
-	: "r" (SRMMU_CTX_REG), "r" (mm->context), "r" (page & PAGE_MASK),
-	  "i" (ASI_M_MMUREGS), "i" (ASI_M_FLUSH_PROBE)
-	: "g5");
-	FLUSH_END
-}
-
 /* viking.S */
 extern void viking_flush_cache_all(void);
 extern void viking_flush_cache_mm(struct mm_struct *mm);
@@ -1307,90 +1069,6 @@ static void __init init_hypersparc(void)
 	hypersparc_setup_blockops();
 }
 
-static void __cpuinit poke_cypress(void)
-{
-	unsigned long mreg = srmmu_get_mmureg();
-	unsigned long faddr, tagval;
-	volatile unsigned long cypress_sucks;
-	volatile unsigned long clear;
-
-	clear = srmmu_get_faddr();
-	clear = srmmu_get_fstatus();
-
-	if (!(mreg & CYPRESS_CENABLE)) {
-		for(faddr = 0x0; faddr < 0x10000; faddr += 20) {
-			__asm__ __volatile__("sta %%g0, [%0 + %1] %2\n\t"
-					     "sta %%g0, [%0] %2\n\t" : :
-					     "r" (faddr), "r" (0x40000),
-					     "i" (ASI_M_DATAC_TAG));
-		}
-	} else {
-		for(faddr = 0; faddr < 0x10000; faddr += 0x20) {
-			__asm__ __volatile__("lda [%1 + %2] %3, %0\n\t" :
-					     "=r" (tagval) :
-					     "r" (faddr), "r" (0x40000),
-					     "i" (ASI_M_DATAC_TAG));
-
-			/* If modified and valid, kick it. */
-			if((tagval & 0x60) == 0x60)
-				cypress_sucks = *(unsigned long *)
-							(0xf0020000 + faddr);
-		}
-	}
-
-	/* And one more, for our good neighbor, Mr. Broken Cypress. */
-	clear = srmmu_get_faddr();
-	clear = srmmu_get_fstatus();
-
-	mreg |= (CYPRESS_CENABLE | CYPRESS_CMODE);
-	srmmu_set_mmureg(mreg);
-}
-
-static const struct sparc32_cachetlb_ops cypress_ops = {
-	.cache_all	= cypress_flush_cache_all,
-	.cache_mm	= cypress_flush_cache_mm,
-	.cache_page	= cypress_flush_cache_page,
-	.cache_range	= cypress_flush_cache_range,
-	.tlb_all	= cypress_flush_tlb_all,
-	.tlb_mm		= cypress_flush_tlb_mm,
-	.tlb_page	= cypress_flush_tlb_page,
-	.tlb_range	= cypress_flush_tlb_range,
-	.page_to_ram	= cypress_flush_page_to_ram,
-	.sig_insns	= cypress_flush_sig_insns,
-	.page_for_dma	= cypress_flush_page_for_dma,
-};
-
-static void __init init_cypress_common(void)
-{
-	init_vac_layout();
-	sparc32_cachetlb_ops = &cypress_ops;
-	poke_srmmu = poke_cypress;
-}
-
-static void __init init_cypress_604(void)
-{
-	srmmu_name = "ROSS Cypress-604(UP)";
-	srmmu_modtype = Cypress;
-	init_cypress_common();
-}
-
-static void __init init_cypress_605(unsigned long mrev)
-{
-	srmmu_name = "ROSS Cypress-605(MP)";
-	if(mrev == 0xe) {
-		srmmu_modtype = Cypress_vE;
-		hwbug_bitmask |= HWBUG_COPYBACK_BROKEN;
-	} else {
-		if(mrev == 0xd) {
-			srmmu_modtype = Cypress_vD;
-			hwbug_bitmask |= HWBUG_ASIFLUSH_BROKEN;
-		} else {
-			srmmu_modtype = Cypress;
-		}
-	}
-	init_cypress_common();
-}
-
 static void __cpuinit poke_swift(void)
 {
 	unsigned long mreg;
@@ -1912,22 +1590,15 @@ static void __init get_srmmu_type(void)
 			break;
 		case 0:
 		case 2:
-			/* Uniprocessor Cypress */
-			init_cypress_604();
-			break;
 		case 10:
 		case 11:
 		case 12:
-			/* _REALLY OLD_ Cypress MP chips... */
 		case 13:
 		case 14:
 		case 15:
-			/* MP Cypress mmu/cache-controller */
-			init_cypress_605(mod_rev);
-			break;
 		default:
-			/* Some other Cypress revision, assume a 605. */
-			init_cypress_605(mod_rev);
+			prom_printf("Sparc-Linux Cypress support does not longer exit.\n");
+			prom_halt();
 			break;
 		}
 		return;