From 46f4b3eab73e621bc239bfa62ebdc44dcc0a877a Mon Sep 17 00:00:00 2001 From: =?utf8?q?Michel=20D=C3=A4nzer?= Date: Mon, 15 Jun 2009 16:56:13 +0200 Subject: [PATCH] drm/ttm: Add some powerpc cache flush code. Optimise the powerpc flushing path for TTM. Signed-off-by: Dave Airlie --- drivers/gpu/drm/ttm/ttm_tt.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index c27ab3a877ad..0331fa74cd3f 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -68,7 +68,7 @@ static void ttm_tt_cache_flush_clflush(struct page *pages[], ttm_tt_clflush_page(*pages++); mb(); } -#else +#elif !defined(__powerpc__) static void ttm_tt_ipi_handler(void *null) { ; @@ -83,6 +83,15 @@ void ttm_tt_cache_flush(struct page *pages[], unsigned long num_pages) ttm_tt_cache_flush_clflush(pages, num_pages); return; } +#elif defined(__powerpc__) + unsigned long i; + + for (i = 0; i < num_pages; ++i) { + if (pages[i]) { + unsigned long start = (unsigned long)page_address(pages[i]); + flush_dcache_range(start, start + PAGE_SIZE); + } + } #else if (on_each_cpu(ttm_tt_ipi_handler, NULL, 1) != 0) printk(KERN_ERR TTM_PFX -- 2.20.1