From: Konrad Eisele <konrad@xxxxxxxxxxx>
>> +#if defined(CONFIG_LEON)
>> +
>> +extern void leon_flush_icache_all(void);
>> +extern void leon_flush_dcache_all(void);
>> +extern void leon_flush_pcache_all(struct vm_area_struct *vma,
>> + unsigned long page);
>> +extern void leon_flush_cache_all(void);
>> +extern void leon_flush_tlb_all(void);
>> +extern int leon_flush_during_switch ;
>> +extern int leon_flush_needed(void);
>> +extern void leon_flush_pcache_all(struct vm_area_struct *vma,
>> + unsigned long page);
>> +
> This is not a .h file.
The other cpu types like viking do it the same way. If I'd
include the definitions in leon.h I'll also have to define
struct vm_area_struct etc. That makes it ugly. I think in this
case a exception can be made (viking etc also got it)
sparc-leon specific SRMMU initialization and
bootup fixes. The sparc-leon caches are virtually tagged so a flush is needed on ctx
switch.
---
arch/sparc/mm/srmmu.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 67 insertions(+), 0 deletions(-)
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index 06c9a7d..0cf201b 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -46,6 +46,10 @@ #include <asm/tsunami.h>
#include <asm/swift.h>
#include <asm/turbosparc.h>
+#ifdef CONFIG_SPARC_LEON
+#include <asm/leon.h>
+#endif
+
#include <asm/btfixup.h>
enum mbus_module srmmu_modtype;
@@ -568,6 +572,11 @@ static void srmmu_switch_mm(struct mm_st
srmmu_ctxd_set(&srmmu_context_table[mm->context], mm->pgd);
}
+#ifdef CONFIG_SPARC_LEON
+ flush_tlb_mm(0);
+ if (leon_flush_during_switch)
+ leon_flush_cache_all();
+#endif
if (is_hypersparc)
hyper_flush_whole_icache();
@@ -1976,6 +1985,57 @@ #endif
poke_srmmu = poke_viking;
}
+#ifdef CONFIG_SPARC_LEON
+
+extern void leon_flush_icache_all(void);
+extern void leon_flush_dcache_all(void);
+extern void leon_flush_pcache_all(struct vm_area_struct *vma,
+ unsigned long page);
+extern void leon_flush_cache_all(void);
+extern void leon_flush_tlb_all(void);
+extern int leon_flush_during_switch ;
+extern int leon_flush_needed(void);
+extern void leon_flush_pcache_all(struct vm_area_struct *vma,
+ unsigned long page);
+
+void __init poke_leonsparc(void)
+{
+}
+
+void __init init_leon(void)
+{
+
+ srmmu_name = "Leon";
+
+ BTFIXUPSET_CALL(flush_cache_all, leon_flush_cache_all,
+ BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_mm, leon_flush_cache_all,
+ BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_page, leon_flush_pcache_all,
+ BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_range, leon_flush_cache_all,
+ BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_page_for_dma, leon_flush_dcache_all,
+ BTFIXUPCALL_NORM);
+
+ BTFIXUPSET_CALL(flush_tlb_all, leon_flush_tlb_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_tlb_mm, leon_flush_tlb_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_tlb_page, leon_flush_tlb_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_tlb_range, leon_flush_tlb_all, BTFIXUPCALL_NORM);
+
+ BTFIXUPSET_CALL(__flush_page_to_ram, leon_flush_cache_all,
+ BTFIXUPCALL_NOP);
+ BTFIXUPSET_CALL(flush_sig_insns, leon_flush_cache_all, BTFIXUPCALL_NOP);
+
+ poke_srmmu = poke_leonsparc;
+
+ srmmu_cache_pagetables = 0;
+
+ leon_flush_during_switch = leon_flush_needed();
+}
+
+#endif
+
/* Probe for the srmmu chip version. */
static void __init get_srmmu_type(void)
{
@@ -1991,6 +2051,13 @@ static void __init get_srmmu_type(void)
psr_typ = (psr >> 28) & 0xf;
psr_vers = (psr >> 24) & 0xf;
+#ifdef CONFIG_SPARC_LEON
+ psr_typ = 0xf; /* hardcoded ids for older models/simulators */
+ psr_vers = 2;
+ init_leon();
+ return;
+#endif
+
/* First, check for HyperSparc or Cypress. */
if(mod_typ == 1) {
switch(mod_rev) {
--
1.4.2.1
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