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Diffstat (limited to 'arch/sparc/mm/leon_mm.c')
-rw-r--r--arch/sparc/mm/leon_mm.c95
1 files changed, 93 insertions, 2 deletions
diff --git a/arch/sparc/mm/leon_mm.c b/arch/sparc/mm/leon_mm.c
index 13c2169822a8..4c67ae6e5023 100644
--- a/arch/sparc/mm/leon_mm.c
+++ b/arch/sparc/mm/leon_mm.c
@@ -15,9 +15,23 @@
#include <asm/leon.h>
#include <asm/tlbflush.h>
+#include "srmmu.h"
+
int leon_flush_during_switch = 1;
int srmmu_swprobe_trace;
+static inline unsigned long leon_get_ctable_ptr(void)
+{
+ unsigned int retval;
+
+ __asm__ __volatile__("lda [%1] %2, %0\n\t" :
+ "=r" (retval) :
+ "r" (SRMMU_CTXTBL_PTR),
+ "i" (ASI_LEON_MMUREGS));
+ return (retval & SRMMU_CTX_PMASK) << 4;
+}
+
+
unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr)
{
@@ -33,10 +47,10 @@ unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr)
if (srmmu_swprobe_trace)
printk(KERN_INFO "swprobe: trace on\n");
- ctxtbl = srmmu_get_ctable_ptr();
+ ctxtbl = leon_get_ctable_ptr();
if (!(ctxtbl)) {
if (srmmu_swprobe_trace)
- printk(KERN_INFO "swprobe: srmmu_get_ctable_ptr returned 0=>0\n");
+ printk(KERN_INFO "swprobe: leon_get_ctable_ptr returned 0=>0\n");
return 0;
}
if (!_pfn_valid(PFN(ctxtbl))) {
@@ -258,3 +272,80 @@ void leon_switch_mm(void)
if (leon_flush_during_switch)
leon_flush_cache_all();
}
+
+static void leon_flush_cache_mm(struct mm_struct *mm)
+{
+ leon_flush_cache_all();
+}
+
+static void leon_flush_cache_page(struct vm_area_struct *vma, unsigned long page)
+{
+ leon_flush_pcache_all(vma, page);
+}
+
+static void leon_flush_cache_range(struct vm_area_struct *vma,
+ unsigned long start,
+ unsigned long end)
+{
+ leon_flush_cache_all();
+}
+
+static void leon_flush_tlb_mm(struct mm_struct *mm)
+{
+ leon_flush_tlb_all();
+}
+
+static void leon_flush_tlb_page(struct vm_area_struct *vma,
+ unsigned long page)
+{
+ leon_flush_tlb_all();
+}
+
+static void leon_flush_tlb_range(struct vm_area_struct *vma,
+ unsigned long start,
+ unsigned long end)
+{
+ leon_flush_tlb_all();
+}
+
+static void leon_flush_page_to_ram(unsigned long page)
+{
+ leon_flush_cache_all();
+}
+
+static void leon_flush_sig_insns(struct mm_struct *mm, unsigned long page)
+{
+ leon_flush_cache_all();
+}
+
+static void leon_flush_page_for_dma(unsigned long page)
+{
+ leon_flush_dcache_all();
+}
+
+void __init poke_leonsparc(void)
+{
+}
+
+static const struct sparc32_cachetlb_ops leon_ops = {
+ .cache_all = leon_flush_cache_all,
+ .cache_mm = leon_flush_cache_mm,
+ .cache_page = leon_flush_cache_page,
+ .cache_range = leon_flush_cache_range,
+ .tlb_all = leon_flush_tlb_all,
+ .tlb_mm = leon_flush_tlb_mm,
+ .tlb_page = leon_flush_tlb_page,
+ .tlb_range = leon_flush_tlb_range,
+ .page_to_ram = leon_flush_page_to_ram,
+ .sig_insns = leon_flush_sig_insns,
+ .page_for_dma = leon_flush_page_for_dma,
+};
+
+void __init init_leon(void)
+{
+ srmmu_name = "LEON";
+ sparc32_cachetlb_ops = &leon_ops;
+ poke_srmmu = poke_leonsparc;
+
+ leon_flush_during_switch = leon_flush_needed();
+}