sh: Fix up the SH-3 build for recent TLB changes.

While the MMUCR.URB and ITLB/UTLB differentiation works fine for all SH-4
and later TLBs, these features are absent on SH-3. This splits out
local_flush_tlb_all() in to SH-4 and PTEAEX copies while restoring the
old SH-3 one, subsequently fixing up the build.

This will probably want some further reordering and tidying in the
future, but that's out of scope at present.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/mm/tlb-pteaex.c b/arch/sh/mm/tlb-pteaex.c
index bdd0982..b71db6a 100644 (file)
--- a/arch/sh/mm/tlb-pteaex.c
+++ b/arch/sh/mm/tlb-pteaex.c
@@ -77,3 +77,31 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
        __raw_writel(asid, MMU_ITLB_ADDRESS_ARRAY2 | MMU_PAGE_ASSOC_BIT);
        back_to_cached();
 }
+
+void local_flush_tlb_all(void)
+{
+       unsigned long flags, status;
+       int i;
+
+       /*
+        * Flush all the TLB.
+        */
+       local_irq_save(flags);
+       jump_to_uncached();
+
+       status = __raw_readl(MMUCR);
+       status = ((status & MMUCR_URB) >> MMUCR_URB_SHIFT);
+
+       if (status == 0)
+               status = MMUCR_URB_NENTRIES;
+
+       for (i = 0; i < status; i++)
+               __raw_writel(0x0, MMU_UTLB_ADDRESS_ARRAY | (i << 8));
+
+       for (i = 0; i < 4; i++)
+               __raw_writel(0x0, MMU_ITLB_ADDRESS_ARRAY | (i << 8));
+
+       back_to_cached();
+       ctrl_barrier();
+       local_irq_restore(flags);
+}

diff --git a/arch/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c
index 4f5f7cb..7a940db 100644 (file)
--- a/arch/sh/mm/tlb-sh3.c
+++ b/arch/sh/mm/tlb-sh3.c
@@ -77,3 +77,22 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
        for (i = 0; i < ways; i++)
                __raw_writel(data, addr + (i << 8));
 }
+
+void local_flush_tlb_all(void)
+{
+       unsigned long flags, status;
+
+       /*
+        * Flush all the TLB.
+        *
+        * Write to the MMU control register's bit:
+        *      TF-bit for SH-3, TI-bit for SH-4.
+        *      It's same position, bit #2.
+        */
+       local_irq_save(flags);
+       status = __raw_readl(MMUCR);
+       status |= 0x04;
+       __raw_writel(status, MMUCR);
+       ctrl_barrier();
+       local_irq_restore(flags);
+}

diff --git a/arch/sh/mm/tlb-sh4.c b/arch/sh/mm/tlb-sh4.c
index ccac77f..cfdf793 100644 (file)
--- a/arch/sh/mm/tlb-sh4.c
+++ b/arch/sh/mm/tlb-sh4.c
@@ -80,3 +80,31 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
        __raw_writel(data, addr);
        back_to_cached();
 }
+
+void local_flush_tlb_all(void)
+{
+       unsigned long flags, status;
+       int i;
+
+       /*
+        * Flush all the TLB.
+        */
+       local_irq_save(flags);
+       jump_to_uncached();
+
+       status = __raw_readl(MMUCR);
+       status = ((status & MMUCR_URB) >> MMUCR_URB_SHIFT);
+
+       if (status == 0)
+               status = MMUCR_URB_NENTRIES;
+
+       for (i = 0; i < status; i++)
+               __raw_writel(0x0, MMU_UTLB_ADDRESS_ARRAY | (i << 8));
+
+       for (i = 0; i < 4; i++)
+               __raw_writel(0x0, MMU_ITLB_ADDRESS_ARRAY | (i << 8));
+
+       back_to_cached();
+       ctrl_barrier();
+       local_irq_restore(flags);
+}

diff --git a/arch/sh/mm/tlbflush_32.c b/arch/sh/mm/tlbflush_32.c
index 77dc5ef..3fbe03c 100644 (file)
--- a/arch/sh/mm/tlbflush_32.c
+++ b/arch/sh/mm/tlbflush_32.c
@@ -119,31 +119,3 @@ void local_flush_tlb_mm(struct mm_struct *mm)
                local_irq_restore(flags);
        }
 }
-
-void local_flush_tlb_all(void)
-{
-       unsigned long flags, status;
-       int i;
-
-       /*
-        * Flush all the TLB.
-        */
-       local_irq_save(flags);
-       jump_to_uncached();
-
-       status = __raw_readl(MMUCR);
-       status = ((status & MMUCR_URB) >> MMUCR_URB_SHIFT);
-
-       if (status == 0)
-               status = MMUCR_URB_NENTRIES;
-
-       for (i = 0; i < status; i++)
-               __raw_writel(0x0, MMU_UTLB_ADDRESS_ARRAY | (i << 8));
-
-       for (i = 0; i < 4; i++)
-               __raw_writel(0x0, MMU_ITLB_ADDRESS_ARRAY | (i << 8));
-
-       back_to_cached();
-       ctrl_barrier();
-       local_irq_restore(flags);
-}