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