diff --git a/linux-core/xgi_drv.c b/linux-core/xgi_drv.c
index b3425c75..bd39dfdc 100644
--- a/linux-core/xgi_drv.c
+++ b/linux-core/xgi_drv.c
@@ -877,10 +877,6 @@ int xgi_kern_ioctl(struct inode *inode, struct file *filp,
 		 arg_size);
 
 	switch (_IOC_NR(cmd)) {
-	case XGI_ESC_DEVICE_INFO:
-		XGI_INFO("Jong-xgi_ioctl_get_device_info \n");
-		xgi_get_device_info(info, (struct xgi_chip_info *)arg_copy);
-		break;
 	case XGI_ESC_POST_VBIOS:
 		XGI_INFO("Jong-xgi_ioctl_post_vbios \n");
 		break;
@@ -892,10 +888,6 @@ int xgi_kern_ioctl(struct inode *inode, struct file *filp,
 		XGI_INFO("Jong-xgi_ioctl_fb_free \n");
 		xgi_fb_free(info, *(unsigned long *)arg_copy);
 		break;
-	case XGI_ESC_MEM_COLLECT:
-		XGI_INFO("Jong-xgi_ioctl_mem_collect \n");
-		xgi_mem_collect(info, (unsigned int *)arg_copy);
-		break;
 	case XGI_ESC_PCIE_ALLOC:
 		XGI_INFO("Jong-xgi_ioctl_pcie_alloc \n");
 		xgi_pcie_alloc(info, alloc, 0);
@@ -905,30 +897,10 @@ int xgi_kern_ioctl(struct inode *inode, struct file *filp,
 			 *((unsigned long *)arg_copy));
 		xgi_pcie_free(info, *((unsigned long *)arg_copy));
 		break;
-	case XGI_ESC_PCIE_CHECK:
-		XGI_INFO("Jong-xgi_pcie_heap_check \n");
-		xgi_pcie_heap_check();
-		break;
-	case XGI_ESC_GET_SCREEN_INFO:
-		XGI_INFO("Jong-xgi_get_screen_info \n");
-		xgi_get_screen_info(info, (struct xgi_screen_info *)arg_copy);
-		break;
-	case XGI_ESC_PUT_SCREEN_INFO:
-		XGI_INFO("Jong-xgi_put_screen_info \n");
-		xgi_put_screen_info(info, (struct xgi_screen_info *)arg_copy);
-		break;
-	case XGI_ESC_MMIO_INFO:
-		XGI_INFO("Jong-xgi_ioctl_get_mmio_info \n");
-		xgi_get_mmio_info(info, (struct xgi_mmio_info *)arg_copy);
-		break;
 	case XGI_ESC_GE_RESET:
 		XGI_INFO("Jong-xgi_ioctl_ge_reset \n");
 		xgi_ge_reset(info);
 		break;
-	case XGI_ESC_SAREA_INFO:
-		XGI_INFO("Jong-xgi_ioctl_sarea_info \n");
-		xgi_sarea_info(info, (struct xgi_sarea_info *)arg_copy);
-		break;
 	case XGI_ESC_DUMP_REGISTER:
 		XGI_INFO("Jong-xgi_ioctl_dump_register \n");
 		xgi_dump_register(info);
diff --git a/linux-core/xgi_drv.h b/linux-core/xgi_drv.h
index 983ed0a9..382bb7a6 100644
--- a/linux-core/xgi_drv.h
+++ b/linux-core/xgi_drv.h
@@ -110,8 +110,6 @@ struct xgi_info {
 	struct xgi_aperture mmio;
 	struct xgi_aperture fb;
 	struct xgi_aperture pcie;
-	struct xgi_screen_info scrn_info;
-	struct xgi_sarea_info sarea_info;
 
 	/* look up table parameters */
 	u32 *lut_base;
@@ -207,7 +205,6 @@ extern void xgi_pcie_heap_cleanup(struct xgi_info * info);
 extern void xgi_pcie_alloc(struct xgi_info * info, 
 			   struct xgi_mem_alloc * alloc, pid_t pid);
 extern void xgi_pcie_free(struct xgi_info * info, unsigned long offset);
-extern void xgi_pcie_heap_check(void);
 extern struct xgi_pcie_block *xgi_find_pcie_block(struct xgi_info * info,
 						    unsigned long address);
 extern void *xgi_find_pcie_virt(struct xgi_info * info, unsigned long address);
diff --git a/linux-core/xgi_misc.c b/linux-core/xgi_misc.c
index 2d310a2f..bb2813ca 100644
--- a/linux-core/xgi_misc.c
+++ b/linux-core/xgi_misc.c
@@ -31,78 +31,12 @@
 #include "xgi_regs.h"
 #include "xgi_pcie.h"
 
-void xgi_get_device_info(struct xgi_info * info, struct xgi_chip_info * req)
-{
-	req->device_id = info->dev->device;
-	req->device_name[0] = 'x';
-	req->device_name[1] = 'g';
-	req->device_name[2] = '4';
-	req->device_name[3] = '7';
-	req->vendor_id = info->dev->vendor;
-	req->curr_display_mode = 0;
-	req->fb_size = info->fb.size;
-	req->sarea_bus_addr = info->sarea_info.bus_addr;
-	req->sarea_size = info->sarea_info.size;
-}
-
-void xgi_get_mmio_info(struct xgi_info * info, struct xgi_mmio_info * req)
-{
-	req->mmio_base = info->mmio.base;
-	req->size = info->mmio.size;
-}
-
-void xgi_put_screen_info(struct xgi_info * info, struct xgi_screen_info * req)
-{
-	info->scrn_info.scrn_start = req->scrn_start;
-	info->scrn_info.scrn_xres = req->scrn_xres;
-	info->scrn_info.scrn_yres = req->scrn_yres;
-	info->scrn_info.scrn_bpp = req->scrn_bpp;
-	info->scrn_info.scrn_pitch = req->scrn_pitch;
-
-	XGI_INFO("info->scrn_info.scrn_start: 0x%lx"
-		 "info->scrn_info.scrn_xres: 0x%lx"
-		 "info->scrn_info.scrn_yres: 0x%lx"
-		 "info->scrn_info.scrn_bpp: 0x%lx"
-		 "info->scrn_info.scrn_pitch: 0x%lx\n",
-		 info->scrn_info.scrn_start,
-		 info->scrn_info.scrn_xres,
-		 info->scrn_info.scrn_yres,
-		 info->scrn_info.scrn_bpp, info->scrn_info.scrn_pitch);
-}
-
-void xgi_get_screen_info(struct xgi_info * info, struct xgi_screen_info * req)
-{
-	req->scrn_start = info->scrn_info.scrn_start;
-	req->scrn_xres = info->scrn_info.scrn_xres;
-	req->scrn_yres = info->scrn_info.scrn_yres;
-	req->scrn_bpp = info->scrn_info.scrn_bpp;
-	req->scrn_pitch = info->scrn_info.scrn_pitch;
-
-	XGI_INFO("req->scrn_start: 0x%lx"
-		 "req->scrn_xres: 0x%lx"
-		 "req->scrn_yres: 0x%lx"
-		 "req->scrn_bpp: 0x%lx"
-		 "req->scrn_pitch: 0x%lx\n",
-		 req->scrn_start,
-		 req->scrn_xres,
-		 req->scrn_yres, req->scrn_bpp, req->scrn_pitch);
-}
-
 void xgi_ge_reset(struct xgi_info * info)
 {
 	xgi_disable_ge(info);
 	xgi_enable_ge(info);
 }
 
-void xgi_sarea_info(struct xgi_info * info, struct xgi_sarea_info * req)
-{
-	info->sarea_info.bus_addr = req->bus_addr;
-	info->sarea_info.size = req->size;
-	XGI_INFO("info->sarea_info.bus_addr: 0x%lx"
-		 "info->sarea_info.size: 0x%lx\n",
-		 info->sarea_info.bus_addr, info->sarea_info.size);
-}
-
 /*
  * irq functions
  */
diff --git a/linux-core/xgi_misc.h b/linux-core/xgi_misc.h
index 85cfbf2b..9c0591b2 100644
--- a/linux-core/xgi_misc.h
+++ b/linux-core/xgi_misc.h
@@ -30,12 +30,7 @@
 #define _XGI_MISC_H_
 
 extern void xgi_dump_register(struct xgi_info * info);
-extern void xgi_get_device_info(struct xgi_info * info, struct xgi_chip_info * req);
-extern void xgi_get_mmio_info(struct xgi_info * info, struct xgi_mmio_info * req);
-extern void xgi_get_screen_info(struct xgi_info * info, struct xgi_screen_info * req);
-extern void xgi_put_screen_info(struct xgi_info * info, struct xgi_screen_info * req);
 extern void xgi_ge_reset(struct xgi_info * info);
-extern void xgi_sarea_info(struct xgi_info * info, struct xgi_sarea_info * req);
 
 extern void xgi_restore_registers(struct xgi_info * info);
 extern bool xgi_ge_irq_handler(struct xgi_info * info);
diff --git a/linux-core/xgi_pcie.c b/linux-core/xgi_pcie.c
index 70459b2c..0d641ab8 100644
--- a/linux-core/xgi_pcie.c
+++ b/linux-core/xgi_pcie.c
@@ -344,35 +344,6 @@ int xgi_pcie_heap_init(struct xgi_info * info)
 	return 0;
 }
 
-void xgi_pcie_heap_check(void)
-{
-#ifdef XGI_DEBUG
-	struct xgi_pcie_block *block;
-	unsigned int ownerIndex;
-	static const char *const ownerStr[6] =
-	    { "2D", "3D", "3D_CMD", "3D_SCR", "3D_TEX", "ELSE" };
-
-	if (!xgi_pcie_heap) {
-		return;
-	}
-
-	XGI_INFO("pcie freemax = 0x%lx\n", xgi_pcie_heap->max_freesize);
-	list_for_each_entry(block, &xgi_pcie_heap->used_list, list) {
-		if (block->owner == PCIE_2D)
-			ownerIndex = 0;
-		else if (block->owner > PCIE_3D_TEXTURE
-			 || block->owner < PCIE_2D
-			 || block->owner < PCIE_3D)
-			ownerIndex = 5;
-		else
-			ownerIndex = block->owner - PCIE_3D + 1;
-
-		XGI_INFO("Allocated by %s, block offset: 0x%lx, size: 0x%lx \n",
-			 ownerStr[ownerIndex], block->offset, block->size);
-	}
-#endif
-}
-
 void xgi_pcie_heap_cleanup(struct xgi_info * info)
 {
 	struct list_head *free_list;
diff --git a/shared-core/xgi_drm.h b/shared-core/xgi_drm.h
index 0abf390a..bc39cbf7 100644
--- a/shared-core/xgi_drm.h
+++ b/shared-core/xgi_drm.h
@@ -31,15 +31,17 @@
 #include <linux/types.h>
 #include <asm/ioctl.h>
 
-struct xgi_chip_info {
+struct drm_xgi_sarea {
 	__u16 device_id;
 	__u16 vendor_id;
 
 	char device_name[32];
-	unsigned int curr_display_mode;	//Singe, DualView(Contained), MHS
-	unsigned int fb_size;
-	unsigned long sarea_bus_addr;
-	unsigned int sarea_size;
+
+	unsigned int scrn_start;
+	unsigned int scrn_xres;
+	unsigned int scrn_yres;
+	unsigned int scrn_bpp;
+	unsigned int scrn_pitch;
 };
 
 enum xgi_mem_location {
@@ -65,14 +67,6 @@ struct xgi_mem_alloc {
 	unsigned long bus_addr;
 };
 
-struct xgi_screen_info {
-	unsigned int scrn_start;
-	unsigned int scrn_xres;
-	unsigned int scrn_yres;
-	unsigned int scrn_bpp;
-	unsigned int scrn_pitch;
-};
-
 struct xgi_sarea_info {
 	unsigned long bus_addr;
 	unsigned int size;
@@ -114,53 +108,35 @@ struct xgi_mmio_info {
 #define XGI_IOCTL_MAGIC             'x'	/* use 'x' as magic number */
 
 #define XGI_IOCTL_BASE              0
-#define XGI_ESC_DEVICE_INFO         (XGI_IOCTL_BASE + 0)
-#define XGI_ESC_POST_VBIOS          (XGI_IOCTL_BASE + 1)
+#define XGI_ESC_POST_VBIOS          (XGI_IOCTL_BASE + 0)
 
-#define XGI_ESC_FB_INIT             (XGI_IOCTL_BASE + 2)
-#define XGI_ESC_FB_ALLOC            (XGI_IOCTL_BASE + 3)
-#define XGI_ESC_FB_FREE             (XGI_IOCTL_BASE + 4)
-#define XGI_ESC_PCIE_INIT           (XGI_IOCTL_BASE + 5)
-#define XGI_ESC_PCIE_ALLOC          (XGI_IOCTL_BASE + 6)
-#define XGI_ESC_PCIE_FREE           (XGI_IOCTL_BASE + 7)
-#define XGI_ESC_SUBMIT_CMDLIST      (XGI_IOCTL_BASE + 8)
-#define XGI_ESC_PUT_SCREEN_INFO     (XGI_IOCTL_BASE + 9)
-#define XGI_ESC_GET_SCREEN_INFO     (XGI_IOCTL_BASE + 10)
-#define XGI_ESC_GE_RESET            (XGI_IOCTL_BASE + 11)
-#define XGI_ESC_SAREA_INFO          (XGI_IOCTL_BASE + 12)
-#define XGI_ESC_DUMP_REGISTER       (XGI_IOCTL_BASE + 13)
-#define XGI_ESC_DEBUG_INFO          (XGI_IOCTL_BASE + 14)
-#define XGI_ESC_TEST_RWINKERNEL     (XGI_IOCTL_BASE + 16)
-#define XGI_ESC_STATE_CHANGE        (XGI_IOCTL_BASE + 17)
-#define XGI_ESC_MMIO_INFO           (XGI_IOCTL_BASE + 18)
-#define XGI_ESC_PCIE_CHECK          (XGI_IOCTL_BASE + 19)
-#define XGI_ESC_MEM_COLLECT         (XGI_IOCTL_BASE + 20)
+#define XGI_ESC_FB_ALLOC            (XGI_IOCTL_BASE + 1)
+#define XGI_ESC_FB_FREE             (XGI_IOCTL_BASE + 2)
+#define XGI_ESC_PCIE_ALLOC          (XGI_IOCTL_BASE + 3)
+#define XGI_ESC_PCIE_FREE           (XGI_IOCTL_BASE + 4)
+#define XGI_ESC_SUBMIT_CMDLIST      (XGI_IOCTL_BASE + 5)
+#define XGI_ESC_GE_RESET            (XGI_IOCTL_BASE + 6)
+#define XGI_ESC_DUMP_REGISTER       (XGI_IOCTL_BASE + 7)
+#define XGI_ESC_DEBUG_INFO          (XGI_IOCTL_BASE + 8)
+#define XGI_ESC_TEST_RWINKERNEL     (XGI_IOCTL_BASE + 9)
+#define XGI_ESC_STATE_CHANGE        (XGI_IOCTL_BASE + 10)
 
-#define XGI_IOCTL_DEVICE_INFO       _IOR(XGI_IOCTL_MAGIC, XGI_ESC_DEVICE_INFO, struct xgi_chip_info)
 #define XGI_IOCTL_POST_VBIOS        _IO(XGI_IOCTL_MAGIC, XGI_ESC_POST_VBIOS)
 
-#define XGI_IOCTL_FB_INIT           _IO(XGI_IOCTL_MAGIC, XGI_ESC_FB_INIT)
 #define XGI_IOCTL_FB_ALLOC          _IOWR(XGI_IOCTL_MAGIC, XGI_ESC_FB_ALLOC, struct xgi_mem_alloc)
 #define XGI_IOCTL_FB_FREE           _IOW(XGI_IOCTL_MAGIC, XGI_ESC_FB_FREE, unsigned long)
 
-#define XGI_IOCTL_PCIE_INIT         _IO(XGI_IOCTL_MAGIC, XGI_ESC_PCIE_INIT)
 #define XGI_IOCTL_PCIE_ALLOC        _IOWR(XGI_IOCTL_MAGIC, XGI_ESC_PCIE_ALLOC, struct xgi_mem_alloc)
 #define XGI_IOCTL_PCIE_FREE         _IOW(XGI_IOCTL_MAGIC, XGI_ESC_PCIE_FREE, unsigned long)
 
-#define XGI_IOCTL_PUT_SCREEN_INFO   _IOW(XGI_IOCTL_MAGIC, XGI_ESC_PUT_SCREEN_INFO, struct xgi_screen_info)
-#define XGI_IOCTL_GET_SCREEN_INFO   _IOR(XGI_IOCTL_MAGIC, XGI_ESC_GET_SCREEN_INFO, struct xgi_screen_info)
-
 #define XGI_IOCTL_GE_RESET          _IO(XGI_IOCTL_MAGIC, XGI_ESC_GE_RESET)
-#define XGI_IOCTL_SAREA_INFO        _IOW(XGI_IOCTL_MAGIC, XGI_ESC_SAREA_INFO, struct xgi_sarea_info)
 #define XGI_IOCTL_DUMP_REGISTER     _IO(XGI_IOCTL_MAGIC, XGI_ESC_DUMP_REGISTER)
 #define XGI_IOCTL_DEBUG_INFO        _IO(XGI_IOCTL_MAGIC, XGI_ESC_DEBUG_INFO)
-#define XGI_IOCTL_MMIO_INFO         _IOR(XGI_IOCTL_MAGIC, XGI_ESC_MMIO_INFO, struct xgi_mmio_info)
 
 #define XGI_IOCTL_SUBMIT_CMDLIST    _IOWR(XGI_IOCTL_MAGIC, XGI_ESC_SUBMIT_CMDLIST, struct xgi_cmd_info)
 #define XGI_IOCTL_TEST_RWINKERNEL   _IOWR(XGI_IOCTL_MAGIC, XGI_ESC_TEST_RWINKERNEL, unsigned long)
 #define XGI_IOCTL_STATE_CHANGE      _IOWR(XGI_IOCTL_MAGIC, XGI_ESC_STATE_CHANGE, struct xgi_state_info)
 
-#define XGI_IOCTL_PCIE_CHECK        _IO(XGI_IOCTL_MAGIC, XGI_ESC_PCIE_CHECK)
 #define XGI_IOCTL_MAXNR          30
 
 /*