drm/nouveau: Add cache_flush/pull fifo engine functions.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>

diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h
index 5f8cbb7..48d0ad9 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_drv.h
+++ b/drivers/gpu/drm/nouveau/nouveau_drv.h
@@ -292,6 +292,8 @@ struct nouveau_fifo_engine {
        void (*disable)(struct drm_device *);
        void (*enable)(struct drm_device *);
        bool (*reassign)(struct drm_device *, bool enable);
+       bool (*cache_flush)(struct drm_device *dev);
+       bool (*cache_pull)(struct drm_device *dev, bool enable);
 
        int  (*channel_id)(struct drm_device *);
 
@@ -889,6 +891,8 @@ extern int  nv04_fifo_init(struct drm_device *);
 extern void nv04_fifo_disable(struct drm_device *);
 extern void nv04_fifo_enable(struct drm_device *);
 extern bool nv04_fifo_reassign(struct drm_device *, bool);
+extern bool nv04_fifo_cache_flush(struct drm_device *);
+extern bool nv04_fifo_cache_pull(struct drm_device *, bool);
 extern int  nv04_fifo_channel_id(struct drm_device *);
 extern int  nv04_fifo_create_context(struct nouveau_channel *);
 extern void nv04_fifo_destroy_context(struct nouveau_channel *);

diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index e76ec2d..9f98843 100644 (file)
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -76,6 +76,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                engine->fifo.disable            = nv04_fifo_disable;
                engine->fifo.enable             = nv04_fifo_enable;
                engine->fifo.reassign           = nv04_fifo_reassign;
+               engine->fifo.cache_flush        = nv04_fifo_cache_flush;
+               engine->fifo.cache_pull         = nv04_fifo_cache_pull;
                engine->fifo.channel_id         = nv04_fifo_channel_id;
                engine->fifo.create_context     = nv04_fifo_create_context;
                engine->fifo.destroy_context    = nv04_fifo_destroy_context;
@@ -115,6 +117,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                engine->fifo.disable            = nv04_fifo_disable;
                engine->fifo.enable             = nv04_fifo_enable;
                engine->fifo.reassign           = nv04_fifo_reassign;
+               engine->fifo.cache_flush        = nv04_fifo_cache_flush;
+               engine->fifo.cache_pull         = nv04_fifo_cache_pull;
                engine->fifo.channel_id         = nv10_fifo_channel_id;
                engine->fifo.create_context     = nv10_fifo_create_context;
                engine->fifo.destroy_context    = nv10_fifo_destroy_context;
@@ -154,6 +158,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                engine->fifo.disable            = nv04_fifo_disable;
                engine->fifo.enable             = nv04_fifo_enable;
                engine->fifo.reassign           = nv04_fifo_reassign;
+               engine->fifo.cache_flush        = nv04_fifo_cache_flush;
+               engine->fifo.cache_pull         = nv04_fifo_cache_pull;
                engine->fifo.channel_id         = nv10_fifo_channel_id;
                engine->fifo.create_context     = nv10_fifo_create_context;
                engine->fifo.destroy_context    = nv10_fifo_destroy_context;
@@ -193,6 +199,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                engine->fifo.disable            = nv04_fifo_disable;
                engine->fifo.enable             = nv04_fifo_enable;
                engine->fifo.reassign           = nv04_fifo_reassign;
+               engine->fifo.cache_flush        = nv04_fifo_cache_flush;
+               engine->fifo.cache_pull         = nv04_fifo_cache_pull;
                engine->fifo.channel_id         = nv10_fifo_channel_id;
                engine->fifo.create_context     = nv10_fifo_create_context;
                engine->fifo.destroy_context    = nv10_fifo_destroy_context;
@@ -233,6 +241,8 @@ static int nouveau_init_engine_ptrs(struct drm_device *dev)
                engine->fifo.disable            = nv04_fifo_disable;
                engine->fifo.enable             = nv04_fifo_enable;
                engine->fifo.reassign           = nv04_fifo_reassign;
+               engine->fifo.cache_flush        = nv04_fifo_cache_flush;
+               engine->fifo.cache_pull         = nv04_fifo_cache_pull;
                engine->fifo.channel_id         = nv10_fifo_channel_id;
                engine->fifo.create_context     = nv40_fifo_create_context;
                engine->fifo.destroy_context    = nv40_fifo_destroy_context;

diff --git a/drivers/gpu/drm/nouveau/nv04_fifo.c b/drivers/gpu/drm/nouveau/nv04_fifo.c
index 0c3cd53..f31347b 100644 (file)
--- a/drivers/gpu/drm/nouveau/nv04_fifo.c
+++ b/drivers/gpu/drm/nouveau/nv04_fifo.c
@@ -71,6 +71,40 @@ nv04_fifo_reassign(struct drm_device *dev, bool enable)
        return (reassign == 1);
 }
 
+bool
+nv04_fifo_cache_flush(struct drm_device *dev)
+{
+       struct drm_nouveau_private *dev_priv = dev->dev_private;
+       struct nouveau_timer_engine *ptimer = &dev_priv->engine.timer;
+       uint64_t start = ptimer->read(dev);
+
+       do {
+               if (nv_rd32(dev, NV03_PFIFO_CACHE1_GET) ==
+                   nv_rd32(dev, NV03_PFIFO_CACHE1_PUT))
+                       return true;
+
+       } while (ptimer->read(dev) - start < 100000000);
+
+       NV_ERROR(dev, "Timeout flushing the PFIFO cache.\n");
+
+       return false;
+}
+
+bool
+nv04_fifo_cache_pull(struct drm_device *dev, bool enable)
+{
+       uint32_t pull = nv_rd32(dev, NV04_PFIFO_CACHE1_PULL0);
+
+       if (enable) {
+               nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, pull | 1);
+       } else {
+               nv_wr32(dev, NV04_PFIFO_CACHE1_PULL0, pull & ~1);
+               nv_wr32(dev, NV04_PFIFO_CACHE1_HASH, 0);
+       }
+
+       return !!(pull & 1);
+}
+
 int
 nv04_fifo_channel_id(struct drm_device *dev)
 {