drm/i915: Remove setparam ioctl

This was only used for the ums+gem combo, so ripe for removal now that
we only have kms code left.

v2: Drop fence_reg_start since it's now unused, noticed by Ville.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_debugfs.c

@@ -957,7 +957,6 @@ static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 	if (ret)
 		return ret;
 
-	seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 	seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 	for (i = 0; i < dev_priv->num_fence_regs; i++) {
 		struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;

drivers/gpu/drm/i915/i915_dma.c

@@ -75,7 +75,7 @@ static int i915_getparam(struct drm_device *dev, void *data,
 		value = 1;
 		break;
 	case I915_PARAM_NUM_FENCES_AVAIL:
-		value = dev_priv->num_fence_regs - dev_priv->fence_reg_start;
+		value = dev_priv->num_fence_regs;
 		break;
 	case I915_PARAM_HAS_OVERLAY:
 		value = dev_priv->overlay ? 1 : 0;
@@ -183,35 +183,6 @@ static int i915_getparam(struct drm_device *dev, void *data,
 	return 0;
 }
 
-static int i915_setparam(struct drm_device *dev, void *data,
-			 struct drm_file *file_priv)
-{
-	struct drm_i915_private *dev_priv = dev->dev_private;
-	drm_i915_setparam_t *param = data;
-
-	switch (param->param) {
-	case I915_SETPARAM_USE_MI_BATCHBUFFER_START:
-	case I915_SETPARAM_TEX_LRU_LOG_GRANULARITY:
-	case I915_SETPARAM_ALLOW_BATCHBUFFER:
-		/* Reject all old ums/dri params. */
-		return -ENODEV;
-
-	case I915_SETPARAM_NUM_USED_FENCES:
-		if (param->value > dev_priv->num_fence_regs ||
-		    param->value < 0)
-			return -EINVAL;
-		/* Userspace can use first N regs */
-		dev_priv->fence_reg_start = param->value;
-		break;
-	default:
-		DRM_DEBUG_DRIVER("unknown parameter %d\n",
-					param->param);
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
 static int i915_get_bridge_dev(struct drm_device *dev)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
@@ -1226,7 +1197,7 @@ const struct drm_ioctl_desc i915_ioctls[] = {
 	DRM_IOCTL_DEF_DRV(I915_IRQ_EMIT, drm_noop, DRM_AUTH),
 	DRM_IOCTL_DEF_DRV(I915_IRQ_WAIT, drm_noop, DRM_AUTH),
 	DRM_IOCTL_DEF_DRV(I915_GETPARAM, i915_getparam, DRM_AUTH|DRM_RENDER_ALLOW),
-	DRM_IOCTL_DEF_DRV(I915_SETPARAM, i915_setparam, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
+	DRM_IOCTL_DEF_DRV(I915_SETPARAM, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
 	DRM_IOCTL_DEF_DRV(I915_ALLOC, drm_noop, DRM_AUTH),
 	DRM_IOCTL_DEF_DRV(I915_FREE, drm_noop, DRM_AUTH),
 	DRM_IOCTL_DEF_DRV(I915_INIT_HEAP, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),

drivers/gpu/drm/i915/i915_drv.h

@@ -1790,7 +1790,6 @@ struct drm_i915_private {
 	struct mutex pps_mutex;
 
 	struct drm_i915_fence_reg fence_regs[I915_MAX_NUM_FENCES]; /* assume 965 */
-	int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
 	int num_fence_regs; /* 8 on pre-965, 16 otherwise */
 
 	unsigned int fsb_freq, mem_freq, is_ddr3;

drivers/gpu/drm/i915/i915_gem_fence.c

@@ -322,7 +322,7 @@ i915_find_fence_reg(struct drm_device *dev)
 
 	/* First try to find a free reg */
 	avail = NULL;
-	for (i = dev_priv->fence_reg_start; i < dev_priv->num_fence_regs; i++) {
+	for (i = 0; i < dev_priv->num_fence_regs; i++) {
 		reg = &dev_priv->fence_regs[i];
 		if (!reg->obj)
 			return reg;