On Mon, Jun 22, 2009 at 12:02:53PM +0200, konrad@xxxxxxxxxxx wrote:
> From: Konrad Eisele <konrad@xxxxxxxxxxx>
>
> The sparc-leon caches are virtually tagged so a flush is needed on ctx
> switch.
>
> Signed-off-by: Konrad Eisele <konrad@xxxxxxxxxxx>
> ---
> arch/sparc/mm/srmmu.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++-
> 1 files changed, 54 insertions(+), 1 deletions(-)
>
> diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
> index ade4eb3..8d0316d 100644
> --- a/arch/sparc/mm/srmmu.c
> +++ b/arch/sparc/mm/srmmu.c
> @@ -46,6 +46,7 @@
> #include <asm/tsunami.h>
> #include <asm/swift.h>
> #include <asm/turbosparc.h>
> +#include <asm/leon.h>
>
> #include <asm/btfixup.h>
>
> @@ -569,6 +570,10 @@ static void srmmu_switch_mm(struct mm_struct *old_mm, struct mm_struct *mm,
> srmmu_ctxd_set(&srmmu_context_table[mm->context], mm->pgd);
> }
>
> + if (sparc_cpu_model == sparc_leon) {
> + leon_switch_mm();
> + }
> +
> if (is_hypersparc)
> hyper_flush_whole_icache();
>
> @@ -1977,6 +1982,47 @@ static void __init init_viking(void)
> poke_srmmu = poke_viking;
> }
>
> +#ifdef CONFIG_SPARC_LEON
> +
> +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();
> +}
> +#else
> +#define init_leon()
> +#endif
You already did this dummy definition in the header file.
> + if (sparc_cpu_model == sparc_leon) {
> + psr_typ = 0xf; /* hardcoded ids for older models/simulators */
> + psr_vers = 2;
> + init_leon(); /* macro if !CONFIG_SPARC_LEON */
drop comment. We do not do so in similar places.
> + return;
> + }
> +
> /* First, check for HyperSparc or Cypress. */
> if(mod_typ == 1) {
> switch(mod_rev) {
Sam
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