From aa8e15f8b51e555e78cb93e279bad5843eea5391 Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Mon, 4 Aug 2008 14:59:17 +1000
Subject: [PATCH] radeon: add userspace mm enable switch

---
 shared-core/radeon_cp.c    | 10 ++++++----
 shared-core/radeon_drm.h   |  1 +
 shared-core/radeon_drv.h   |  2 ++
 shared-core/radeon_state.c |  3 +++
 4 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/shared-core/radeon_cp.c b/shared-core/radeon_cp.c
index b69fadbb..430f5493 100644
--- a/shared-core/radeon_cp.c
+++ b/shared-core/radeon_cp.c
@@ -1364,8 +1364,7 @@ static int radeon_do_cleanup_cp(struct drm_device * dev)
 		if (dev_priv->gart_info.bus_addr) {
 			/* Turn off PCI GART */
 			radeon_set_pcigart(dev_priv, 0);
-			if (!drm_ati_pcigart_cleanup(dev, &dev_priv->gart_info))
-				DRM_ERROR("failed to cleanup PCI GART!\n");
+			drm_ati_pcigart_cleanup(dev, &dev_priv->gart_info);
 		}
 
 		if (dev_priv->gart_info.gart_table_location == DRM_ATI_GART_FB)
@@ -1373,6 +1372,7 @@ static int radeon_do_cleanup_cp(struct drm_device * dev)
 			if (dev_priv->pcigart_offset_set == 1) {
 				drm_core_ioremapfree(&dev_priv->gart_info.mapping, dev);
 				dev_priv->gart_info.addr = NULL;
+				dev_priv->pcigart_offset_set = 0;
 			}
 		}
 	}
@@ -1563,8 +1563,10 @@ void radeon_do_release(struct drm_device * dev)
 		radeon_mem_takedown(&(dev_priv->gart_heap));
 		radeon_mem_takedown(&(dev_priv->fb_heap));
 
-
-		radeon_gem_mm_fini(dev);
+		if (dev_priv->user_mm_enable) {
+			radeon_gem_mm_fini(dev);
+			dev_priv->user_mm_enable = false;
+		}
 
 		/* deallocate kernel resources */
 		radeon_do_cleanup_cp(dev);
diff --git a/shared-core/radeon_drm.h b/shared-core/radeon_drm.h
index 8ee1baa7..8bb5d87c 100644
--- a/shared-core/radeon_drm.h
+++ b/shared-core/radeon_drm.h
@@ -768,6 +768,7 @@ typedef struct drm_radeon_setparam {
 #define RADEON_SETPARAM_NEW_MEMMAP 4		/* Use new memory map */
 #define RADEON_SETPARAM_PCIGART_TABLE_SIZE 5    /* PCI GART Table Size */
 #define RADEON_SETPARAM_VBLANK_CRTC 6           /* VBLANK CRTC */
+#define RADEON_SETPARAM_MM_INIT 7		/* Initialise the mm */
 /* 1.14: Clients can allocate/free a surface
  */
 typedef struct drm_radeon_surface_alloc {
diff --git a/shared-core/radeon_drv.h b/shared-core/radeon_drv.h
index e55a9697..0363dfd4 100644
--- a/shared-core/radeon_drv.h
+++ b/shared-core/radeon_drv.h
@@ -314,6 +314,8 @@ typedef struct drm_radeon_private {
 
 	int new_memmap;
 
+	bool user_mm_enable;
+
 	int gart_size;
 	u32 gart_vm_start;
 	unsigned long gart_buffers_offset;
diff --git a/shared-core/radeon_state.c b/shared-core/radeon_state.c
index 00160fbf..ca10db4b 100644
--- a/shared-core/radeon_state.c
+++ b/shared-core/radeon_state.c
@@ -3182,6 +3182,9 @@ static int radeon_cp_setparam(struct drm_device *dev, void *data, struct drm_fil
 	case RADEON_SETPARAM_VBLANK_CRTC:
 		return radeon_vblank_crtc_set(dev, sp->value);
 		break;
+	case RADEON_SETPARAM_MM_INIT:
+		dev_priv->user_mm_enable = true;
+		return radeon_gem_mm_init(dev);
 	default:
 		DRM_DEBUG("Invalid parameter %d\n", sp->param);
 		return -EINVAL;