From 3bf777bf0ab112527cea103c3681934a9f41c03d Mon Sep 17 00:00:00 2001 From: Marcin Kościelnicki Date: Sun, 28 Feb 2010 23:45:38 +0000 Subject: drm/nv50: Make ctxprog wait until interrupt handler is done. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This will fix races between generated ctxprogs and interrupt handler. Signed-off-by: Marcin Kościelnicki Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nv50_grctx.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/nouveau/nv50_grctx.c b/drivers/gpu/drm/nouveau/nv50_grctx.c index d105fcd42ca0..9f909abfb5ab 100644 --- a/drivers/gpu/drm/nouveau/nv50_grctx.c +++ b/drivers/gpu/drm/nouveau/nv50_grctx.c @@ -64,6 +64,9 @@ #define CP_FLAG_ALWAYS ((2 * 32) + 13) #define CP_FLAG_ALWAYS_FALSE 0 #define CP_FLAG_ALWAYS_TRUE 1 +#define CP_FLAG_INTR ((2 * 32) + 15) +#define CP_FLAG_INTR_NOT_PENDING 0 +#define CP_FLAG_INTR_PENDING 1 #define CP_CTX 0x00100000 #define CP_CTX_COUNT 0x000f0000 @@ -214,6 +217,8 @@ nv50_grctx_init(struct nouveau_grctx *ctx) cp_name(ctx, cp_setup_save); cp_set (ctx, UNK1D, SET); cp_wait(ctx, STATUS, BUSY); + cp_wait(ctx, INTR, PENDING); + cp_bra (ctx, STATUS, BUSY, cp_setup_save); cp_set (ctx, UNK01, SET); cp_set (ctx, SWAP_DIRECTION, SAVE); -- cgit v1.2.3