diff --git a/linux-core/xgi_cmdlist.c b/linux-core/xgi_cmdlist.c
index 04ee6e82..f7730d89 100644
--- a/linux-core/xgi_cmdlist.c
+++ b/linux-core/xgi_cmdlist.c
@@ -42,12 +42,12 @@ static void xgi_cmdlist_reset(void);
 
 int xgi_cmdlist_initialize(struct xgi_info * info, size_t size)
 {
-	//struct xgi_mem_req mem_req;
-	struct xgi_mem_alloc mem_alloc;
+	struct xgi_mem_alloc mem_alloc = {
+		.size = size,
+		.owner = PCIE_2D,
+	};
 
-	//mem_req.size = size;
-
-	xgi_pcie_alloc(info, size, PCIE_2D, &mem_alloc);
+	xgi_pcie_alloc(info, &mem_alloc, 0);
 
 	if ((mem_alloc.size == 0) && (mem_alloc.hw_addr == 0)) {
 		return -1;
diff --git a/linux-core/xgi_drv.c b/linux-core/xgi_drv.c
index 081db19e..3608c747 100644
--- a/linux-core/xgi_drv.c
+++ b/linux-core/xgi_drv.c
@@ -894,7 +894,7 @@ int xgi_kern_ioctl(struct inode *inode, struct file *filp,
 		break;
 	case XGI_ESC_FB_ALLOC:
 		XGI_INFO("Jong-xgi_ioctl_fb_alloc \n");
-		xgi_fb_alloc(info, (struct xgi_mem_req *)arg_copy, alloc);
+		xgi_fb_alloc(info, alloc, 0);
 		break;
 	case XGI_ESC_FB_FREE:
 		XGI_INFO("Jong-xgi_ioctl_fb_free \n");
@@ -906,8 +906,7 @@ int xgi_kern_ioctl(struct inode *inode, struct file *filp,
 		break;
 	case XGI_ESC_PCIE_ALLOC:
 		XGI_INFO("Jong-xgi_ioctl_pcie_alloc \n");
-		xgi_pcie_alloc(info, ((struct xgi_mem_req *) arg_copy)->size,
-			       ((struct xgi_mem_req *) arg_copy)->owner, alloc);
+		xgi_pcie_alloc(info, alloc, 0);
 		break;
 	case XGI_ESC_PCIE_FREE:
 		XGI_INFO("Jong-xgi_ioctl_pcie_free: bus_addr = 0x%lx \n",
@@ -945,8 +944,6 @@ int xgi_kern_ioctl(struct inode *inode, struct file *filp,
 	case XGI_ESC_DEBUG_INFO:
 		XGI_INFO("Jong-xgi_ioctl_restore_registers \n");
 		xgi_restore_registers(info);
-		//xgi_write_pcie_mem(info, (struct xgi_mem_req *) arg_copy);
-		//xgi_read_pcie_mem(info, (struct xgi_mem_req *) arg_copy);
 		break;
 	case XGI_ESC_SUBMIT_CMDLIST:
 		XGI_INFO("Jong-xgi_ioctl_submit_cmdlist \n");
diff --git a/linux-core/xgi_drv.h b/linux-core/xgi_drv.h
index 248377aa..361a1e96 100644
--- a/linux-core/xgi_drv.h
+++ b/linux-core/xgi_drv.h
@@ -177,19 +177,23 @@ enum PcieOwner {
 };
 
 struct xgi_mem_req {
-	enum xgi_mem_location location;
-	unsigned long size;
-	unsigned long is_front;
-	enum PcieOwner owner;
-	unsigned long pid;
 };
 
 struct xgi_mem_alloc {
-	enum xgi_mem_location location;
-	unsigned long size;
+	unsigned int location;
+	unsigned int size;
+	unsigned int is_front;
+	unsigned int owner;
+
+	/**
+	 * Address of the memory from the graphics hardware's point of view.
+	 */
+	u32 hw_addr;
+
+	/**
+	 * Physical address of the memory from the processor's point of view.
+	 */
 	unsigned long bus_addr;
-	unsigned long hw_addr;
-	unsigned long pid;
 };
 
 struct xgi_chip_info {
@@ -274,11 +278,11 @@ struct xgi_mem_pid {
 #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_req)
+#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_req)
+#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)
@@ -332,25 +336,22 @@ struct xgi_mem_pid {
 extern int xgi_fb_heap_init(struct xgi_info * info);
 extern void xgi_fb_heap_cleanup(struct xgi_info * info);
 
-extern void xgi_fb_alloc(struct xgi_info * info, struct xgi_mem_req * req,
-			 struct xgi_mem_alloc * alloc);
+extern void xgi_fb_alloc(struct xgi_info * info, struct xgi_mem_alloc * alloc,
+			 pid_t pid);
 extern void xgi_fb_free(struct xgi_info * info, unsigned long offset);
 extern void xgi_mem_collect(struct xgi_info * info, unsigned int *pcnt);
 
 extern int xgi_pcie_heap_init(struct xgi_info * info);
 extern void xgi_pcie_heap_cleanup(struct xgi_info * info);
 
-extern void xgi_pcie_alloc(struct xgi_info * info, unsigned long size,
-			   enum PcieOwner owner, struct xgi_mem_alloc * alloc);
+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);
 
-extern void xgi_read_pcie_mem(struct xgi_info * info, struct xgi_mem_req * req);
-extern void xgi_write_pcie_mem(struct xgi_info * info, struct xgi_mem_req * req);
-
 extern void xgi_test_rwinkernel(struct xgi_info * info, unsigned long address);
 
 #endif
diff --git a/linux-core/xgi_fb.c b/linux-core/xgi_fb.c
index d7e9285d..ac73b41a 100644
--- a/linux-core/xgi_fb.c
+++ b/linux-core/xgi_fb.c
@@ -41,13 +41,13 @@ static struct xgi_mem_block *xgi_mem_new_node(void);
 static struct xgi_mem_block *xgi_mem_alloc(struct xgi_info * info, unsigned long size);
 static struct xgi_mem_block *xgi_mem_free(struct xgi_info * info, unsigned long offset);
 
-void xgi_fb_alloc(struct xgi_info * info,
-		  struct xgi_mem_req * req, struct xgi_mem_alloc * alloc)
+void xgi_fb_alloc(struct xgi_info * info, struct xgi_mem_alloc * alloc, 
+		  pid_t pid)
 {
 	struct xgi_mem_block *block;
 	struct xgi_mem_pid *mempid_block;
 
-	if (req->is_front) {
+	if (alloc->is_front) {
 		alloc->location = XGI_MEMLOC_LOCAL;
 		alloc->bus_addr = info->fb.base;
 		alloc->hw_addr = 0;
@@ -55,7 +55,7 @@ void xgi_fb_alloc(struct xgi_info * info,
 		    ("Video RAM allocation on front buffer successfully! \n");
 	} else {
 		xgi_down(info->fb_sem);
-		block = xgi_mem_alloc(info, req->size);
+		block = xgi_mem_alloc(info, alloc->size);
 		xgi_up(info->fb_sem);
 
 		if (block == NULL) {
@@ -77,7 +77,7 @@ void xgi_fb_alloc(struct xgi_info * info,
 			    kmalloc(sizeof(struct xgi_mem_pid), GFP_KERNEL);
 			mempid_block->location = XGI_MEMLOC_LOCAL;
 			mempid_block->bus_addr = alloc->bus_addr;
-			mempid_block->pid = alloc->pid;
+			mempid_block->pid = pid;
 
 			if (!mempid_block)
 				XGI_ERROR("mempid_block alloc failed\n");
diff --git a/linux-core/xgi_pcie.c b/linux-core/xgi_pcie.c
index 82111249..0f82e4ec 100644
--- a/linux-core/xgi_pcie.c
+++ b/linux-core/xgi_pcie.c
@@ -764,14 +764,13 @@ static struct xgi_pcie_block *xgi_pcie_mem_free(struct xgi_info * info,
 	return (used_block);
 }
 
-void xgi_pcie_alloc(struct xgi_info * info, unsigned long size,
-		    enum PcieOwner owner, struct xgi_mem_alloc * alloc)
+void xgi_pcie_alloc(struct xgi_info * info, struct xgi_mem_alloc * alloc,
+		    pid_t pid)
 {
 	struct xgi_pcie_block *block;
-	struct xgi_mem_pid *mempid_block;
 
 	xgi_down(info->pcie_sem);
-	block = xgi_pcie_mem_alloc(info, size, owner);
+	block = xgi_pcie_mem_alloc(info, alloc->size, alloc->owner);
 	xgi_up(info->pcie_sem);
 
 	if (block == NULL) {
@@ -794,17 +793,18 @@ void xgi_pcie_alloc(struct xgi_info * info, unsigned long size,
 		   PCIE_3D request means a opengl process created.
 		   PCIE_3D_TEXTURE request means texture cannot alloc from fb.
 		 */
-		if (owner == PCIE_3D || owner == PCIE_3D_TEXTURE) {
-			mempid_block =
+		if ((alloc->owner == PCIE_3D)
+		    || (alloc->owner == PCIE_3D_TEXTURE)) {
+			struct xgi_mem_pid *mempid_block =
 			    kmalloc(sizeof(struct xgi_mem_pid), GFP_KERNEL);
 			if (!mempid_block)
 				XGI_ERROR("mempid_block alloc failed\n");
 			mempid_block->location = XGI_MEMLOC_NON_LOCAL;
-			if (owner == PCIE_3D)
+			if (alloc->owner == PCIE_3D)
 				mempid_block->bus_addr = 0xFFFFFFFF;	/*xgi_pcie_vertex_block has the address */
 			else
 				mempid_block->bus_addr = alloc->bus_addr;
-			mempid_block->pid = alloc->pid;
+			mempid_block->pid = pid;
 
 			XGI_INFO
 			    ("Memory ProcessID add one pcie block pid:%ld successfully! \n",
@@ -944,15 +944,6 @@ void *xgi_find_pcie_virt(struct xgi_info * info, unsigned long address)
 	return NULL;
 }
 
-void xgi_read_pcie_mem(struct xgi_info * info, struct xgi_mem_req * req)
-{
-
-}
-
-void xgi_write_pcie_mem(struct xgi_info * info, struct xgi_mem_req * req)
-{
-}
-
 /*
     address -- GE hw address
 */