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authorDavid S. Miller <davem@davemloft.net>2012-05-14 22:02:08 -0700
committerDavid S. Miller <davem@davemloft.net>2012-05-15 10:22:00 -0700
commitc7020eb4661eaf568a277056258a387ef88a9349 (patch)
tree4875adf04fa47e5da1a2cc7c2376ce876b784c09 /arch/sparc/mm
parent834b97f15455097ccad36e098950b8ad2435f611 (diff)
downloadlinux-c7020eb4661eaf568a277056258a387ef88a9349.tar.gz
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>
Diffstat (limited to 'arch/sparc/mm')
-rw-r--r--arch/sparc/mm/srmmu.c333
1 files changed, 2 insertions, 331 deletions
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index 765b1a5ab5e..4875fcd8fd7 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;