diff options
| author | Thiemo Seufer <ths@networkno.de> | 2006-11-16 22:13:54 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2006-11-22 23:34:01 +0000 |
| commit | eb4828750852b84703f64747b3bedf6394d629ef (patch) | |
| tree | 49fbb6d7168132c470499bbffdb4f08e5c071d4e /arch/mips/mm/c-sb1.c | |
| parent | 0f9005a6f7a82f4aacbd72f7b92322a8ca1c3f97 (diff) | |
[MIPS] Hack for SB1 cache issues
Removing flush_icache_page a while ago broke SB1 which was using an empty
flush_data_cache_page function. This glues things well enough so a more
efficient but also more intrusive solution can be found later.
Signed-Off-By: Thiemo Seufer <ths@networkno.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mm/c-sb1.c')
| -rw-r--r-- | arch/mips/mm/c-sb1.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/mips/mm/c-sb1.c b/arch/mips/mm/c-sb1.c index d0ddb4a768a..3a8afd47fea 100644 --- a/arch/mips/mm/c-sb1.c +++ b/arch/mips/mm/c-sb1.c @@ -19,6 +19,7 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <linux/init.h> +#include <linux/hardirq.h> #include <asm/asm.h> #include <asm/bootinfo.h> @@ -242,6 +243,25 @@ void sb1_flush_cache_page(struct vm_area_struct *vma, unsigned long addr, unsign __attribute__((alias("local_sb1_flush_cache_page"))); #endif +#ifdef CONFIG_SMP +static void sb1_flush_cache_data_page_ipi(void *info) +{ + unsigned long start = (unsigned long)info; + + __sb1_writeback_inv_dcache_range(start, start + PAGE_SIZE); +} + +static void sb1_flush_cache_data_page(unsigned long addr) +{ + if (in_atomic()) + __sb1_writeback_inv_dcache_range(addr, addr + PAGE_SIZE); + else + on_each_cpu(sb1_flush_cache_data_page_ipi, (void *) addr, 1, 1); +} +#else +void sb1_flush_cache_data_page(unsigned long) + __attribute__((alias("local_sb1_flush_cache_data_page"))); +#endif /* * Invalidate all caches on this CPU @@ -481,7 +501,7 @@ void sb1_cache_init(void) flush_cache_sigtramp = sb1_flush_cache_sigtramp; local_flush_data_cache_page = (void *) sb1_nop; - flush_data_cache_page = (void *) sb1_nop; + flush_data_cache_page = sb1_flush_cache_data_page; /* Full flush */ __flush_cache_all = sb1___flush_cache_all; |