i915: remove settable use_mi_batchbuffer_start

The driver can know what hardware requires MI_BATCH_BUFFER vs
MI_BATCH_BUFFER_START; there's no reason to let user mode configure this.

Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 9ac4720..ae0ba35 100644 (file)
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -159,13 +159,6 @@ static int i915_initialize(struct drm_device * dev, drm_i915_init_t * init)
        dev_priv->current_page = 0;
        dev_priv->sarea_priv->pf_current_page = dev_priv->current_page;
 
-       /* We are using separate values as placeholders for mechanisms for
-        * private backbuffer/depthbuffer usage.
-        */
-       dev_priv->use_mi_batchbuffer_start = 0;
-       if (IS_I965G(dev)) /* 965 doesn't support older method */
-               dev_priv->use_mi_batchbuffer_start = 1;
-
        /* Allow hardware batchbuffers unless told otherwise.
         */
        dev_priv->allow_batchbuffer = 1;
@@ -486,7 +479,7 @@ static int i915_dispatch_batchbuffer(struct drm_device * dev,
                                return ret;
                }
 
-               if (dev_priv->use_mi_batchbuffer_start) {
+               if (!IS_I830(dev) && !IS_845G(dev)) {
                        BEGIN_LP_RING(2);
                        if (IS_I965G(dev)) {
                                OUT_RING(MI_BATCH_BUFFER_START | (2 << 6) | MI_BATCH_NON_SECURE_I965);
@@ -697,8 +690,6 @@ static int i915_setparam(struct drm_device *dev, void *data,
 
        switch (param->param) {
        case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
-               if (!IS_I965G(dev))
-                       dev_priv->use_mi_batchbuffer_start = param->value;
                break;
        case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
                dev_priv->tex_lru_log_granularity = param->value;

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index d7326d9..2d441d3 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -99,7 +99,6 @@ typedef struct drm_i915_private {
        int front_offset;
        int current_page;
        int page_flipping;
-       int use_mi_batchbuffer_start;
 
        wait_queue_head_t irq_queue;
        atomic_t irq_received;