Merge tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "This contains two major new drivers:

   - imagination is a first driver for Imagination Technologies devices,
     it only covers very specific devices, but there is hope to grow it

   - xe is a reboot of the i915 GPU (shares display) side using a more
     upstream focused development model, and trying to maximise code
     sharing. It's not enabled for any hw by default, and will hopefully
     get switched on for Intel's Lunarlake.

  This also drops a bunch of the old UMS ioctls. It's been dead long
  enough.

  amdgpu has a bunch of new color management code that is being used in
  the Steam Deck.

  amdgpu also has a new ACPI WBRF interaction to help avoid radio
  interference.

  Otherwise it's the usual lots of changes in lots of places.

  Detailed summary:

  new drivers:
   - imagination - new driver for Imagination Technologies GPU
   - xe - new driver for Intel GPUs using core drm concepts

  core:
   - add CLOSE_FB ioctl
   - remove old UMS ioctls
   - increase max objects to accomodate AMD color mgmt

  encoder:
   - create per-encoder debugfs directory

  edid:
   - split out drm_eld
   - SAD helpers
   - drop edid_firmware module parameter

  format-helper:
   - cache format conversion buffers

  sched:
   - move from kthread to workqueue
   - rename some internals
   - implement dynamic job-flow control

  gpuvm:
   - provide more features to handle GEM objects

  client:
   - don't acquire module reference

  displayport:
   - add mst path property documentation

  fdinfo:
   - alignment fix

  dma-buf:
   - add fence timestamp helper
   - add fence deadline support

  bridge:
   - transparent aux-bridge for DP/USB-C
   - lt8912b: add suspend/resume support and power regulator support

  panel:
   - edp: AUO B116XTN02, BOE NT116WHM-N21,836X2, NV116WHM-N49
   - chromebook panel support
   - elida-kd35t133: rework pm
   - powkiddy RK2023 panel
   - himax-hx8394: drop prepare/unprepare and shutdown logic
   - BOE BP101WX1-100, Powkiddy X55, Ampire AM8001280G
   - Evervision VGG644804, SDC ATNA45AF01
   - nv3052c: register docs, init sequence fixes, fascontek FS035VG158
   - st7701: Anbernic RG-ARC support
   - r63353 panel controller
   - Ilitek ILI9805 panel controller
   - AUO G156HAN04.0

  simplefb:
   - support memory regions
   - support power domains

  amdgpu:
   - add new 64-bit sequence number infrastructure
   - add AMD specific color management
   - ACPI WBRF support for RF interference handling
   - GPUVM updates
   - RAS updates
   - DCN 3.5 updates
   - Rework PCIe link speed handling
   - Document GPU reset types
   - DMUB fixes
   - eDP fixes
   - NBIO 7.9/7.11 updates
   - SubVP updates
   - XGMI PCIe state dumping for aqua vanjaram
   - GFX11 golden register updates
   - enable tunnelling on high pri compute

  amdkfd:
   - Migrate TLB flushing logic to amdgpu
   - Trap handler fixes
   - Fix restore workers handling on suspend/resume
   - Fix possible memory leak in pqm_uninit()
   - support import/export of dma-bufs using GEM handles

  radeon:
   - fix possible overflows in command buffer checking
   - check for errors in ring_lock

  i915:
   - reorg display code for reuse in xe driver
   - fdinfo memory stats printing
   - DP MST bandwidth mgmt improvements
   - DP panel replay enabling
   - MTL C20 phy state verification
   - MTL DP DSC fractional bpp support
   - Audio fastset support
   - use dma_fence interfaces instead of i915_sw_fence
   - Separate gem and display code
   - AUX register macro refactoring
   - Separate display module/device parameters
   - Move display capabilities debugfs under display
   - Makefile cleanups
   - Register cleanups
   - Move display lock inits under display/
   - VLV/CHV DPIO PHY register and interface refactoring
   - DSI VBT sequence refactoring
   - C10/C20 PHY PLL hardware readout
   - DPLL code cleanups
   - Cleanup PXP plane protection checks
   - Improve display debug msgs
   - PSR selective fetch fixes/improvements
   - DP MST fixes
   - Xe2LPD FBC restrictions removed
   - DGFX uses direct VBT pin mapping
   - more MTL WAs
   - fix MTL eDP bug
   - eliminate use of kmap_atomic

  habanalabs:
   - sysfs entry to identify a device minor id with debugfs path
   - sysfs entry to expose device module id
   - add signed device info retrieval through INFO ioctl
   - add Gaudi2C device support
   - pcie reset prepare/done hooks

  msm:
   - Add support for SDM670, SM8650
   - Handle the CFG interconnect to fix the obscure hangs / timeouts
   - Kconfig fix for QMP dependency
   - use managed allocators
   - DPU: SDM670, SM8650 support
   - DPU: Enable SmartDMA on SM8350 and SM8450
   - DP: enable runtime PM support
   - GPU: add metadata UAPI
   - GPU: move devcoredumps to GPU device
   - GPU: convert to drm_exec

  ivpu:
   - update FW API
   - new debugfs file
   - a new NOP job submission test mode
   - improve suspend/resume
   - PM improvements
   - MMU PT optimizations
   - firmware profile frequency support
   - support for uncached buffers
   - switch to gem shmem helpers
   - replace kthread with threaded irqs

  rockchip:
   - rk3066_hdmi: convert to atomic
   - vop2: support nv20 and nv30
   - rk3588 support

  mediatek:
   - use devm_platform_ioremap_resource
   - stop using iommu_present
   - MT8188 VDOSYS1 display support

  panfrost:
   - PM improvements
   - improve interrupt handling as poweroff

  qaic:
   - allow to run with single MSI
   - support host/device time sync
   - switch to persistent DRM devices

  exynos:
   - fix potential error pointer dereference
   - fix wrong error checking
   - add missing call to drm_atomic_helper_shutdown

  omapdrm:
   - dma-fence lockdep annotation fix

  tidss:
   - dma-fence lockdep annotation fix
   - support for AM62A7

  v3d:
   - BCM2712 - rpi5 support
   - fdinfo + gputop support
   - uapi for CPU job handling

  virtio-gpu:
   - add context debug name"

* tag 'drm-next-2024-01-10' of git://anongit.freedesktop.org/drm/drm: (2340 commits)
  drm/amd/display: Allow z8/z10 from driver
  drm/amd/display: fix bandwidth validation failure on DCN 2.1
  drm/amdgpu: apply the RV2 system aperture fix to RN/CZN as well
  drm/amd/display: Move fixpt_from_s3132 to amdgpu_dm
  drm/amd/display: Fix recent checkpatch errors in amdgpu_dm
  Revert "drm/amdkfd: Relocate TBA/TMA to opposite side of VM hole"
  drm/amd/display: avoid stringop-overflow warnings for dp_decide_lane_settings()
  drm/amd/display: Fix power_helpers.c codestyle
  drm/amd/display: Fix hdcp_log.h codestyle
  drm/amd/display: Fix hdcp2_execution.c codestyle
  drm/amd/display: Fix hdcp_psp.h codestyle
  drm/amd/display: Fix freesync.c codestyle
  drm/amd/display: Fix hdcp_psp.c codestyle
  drm/amd/display: Fix hdcp1_execution.c codestyle
  drm/amd/pm/smu7: fix a memleak in smu7_hwmgr_backend_init
  drm/amdkfd: Fix iterator used outside loop in 'kfd_add_peer_prop()'
  drm/amdgpu: Drop 'fence' check in 'to_amdgpu_amdkfd_fence()'
  drm/amdkfd: Confirm list is non-empty before utilizing list_first_entry in kfd_topology.c
  drm/amdgpu: Fix '*fw' from request_firmware() not released in 'amdgpu_ucode_request()'
  drm/amdgpu: Fix variable 'mca_funcs' dereferenced before NULL check in 'amdgpu_mca_smu_get_mca_entry()'
  ...

6 files changed, 0 insertions, 1491 deletions

diff --git a/drivers/char/agp/Makefile b/drivers/char/agp/Makefile
index 25834557e48653..43b09cf193bb7d 100644
--- a/drivers/char/agp/Makefile
+++ b/drivers/char/agp/Makefile
@@ -1,12 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 agpgart-y := backend.o generic.o isoch.o
 
-ifeq ($(CONFIG_DRM_LEGACY),y)
-agpgart-$(CONFIG_COMPAT)	+= compat_ioctl.o
-agpgart-y			+= frontend.o
-endif
-
-
 obj-$(CONFIG_AGP)		+= agpgart.o
 obj-$(CONFIG_AGP_ALI)		+= ali-agp.o
 obj-$(CONFIG_AGP_ATI)		+= ati-agp.o
diff --git a/drivers/char/agp/agp.h b/drivers/char/agp/agp.h
index 8771dcc9b8e2f7..5c36ab85f80b77 100644
--- a/drivers/char/agp/agp.h
+++ b/drivers/char/agp/agp.h
@@ -185,15 +185,6 @@ void agp_put_bridge(struct agp_bridge_data *bridge);
 int agp_add_bridge(struct agp_bridge_data *bridge);
 void agp_remove_bridge(struct agp_bridge_data *bridge);
 
-/* Frontend routines. */
-#if IS_ENABLED(CONFIG_DRM_LEGACY)
-int agp_frontend_initialize(void);
-void agp_frontend_cleanup(void);
-#else
-static inline int agp_frontend_initialize(void) { return 0; }
-static inline void agp_frontend_cleanup(void) {}
-#endif
-
 /* Generic routines. */
 void agp_generic_enable(struct agp_bridge_data *bridge, u32 mode);
 int agp_generic_create_gatt_table(struct agp_bridge_data *bridge);
diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c
index 0e19c600db5318..1776afd3ee0785 100644
--- a/drivers/char/agp/backend.c
+++ b/drivers/char/agp/backend.c
@@ -293,13 +293,6 @@ int agp_add_bridge(struct agp_bridge_data *bridge)
 	}
 
 	if (list_empty(&agp_bridges)) {
-		error = agp_frontend_initialize();
-		if (error) {
-			dev_info(&bridge->dev->dev,
-				 "agp_frontend_initialize() failed\n");
-			goto frontend_err;
-		}
-
 		dev_info(&bridge->dev->dev, "AGP aperture is %dM @ 0x%lx\n",
 			 bridge->driver->fetch_size(), bridge->gart_bus_addr);
 
@@ -308,8 +301,6 @@ int agp_add_bridge(struct agp_bridge_data *bridge)
 	list_add(&bridge->list, &agp_bridges);
 	return 0;
 
-frontend_err:
-	agp_backend_cleanup(bridge);
 err_out:
 	module_put(bridge->driver->owner);
 err_put_bridge:
@@ -323,8 +314,6 @@ void agp_remove_bridge(struct agp_bridge_data *bridge)
 {
 	agp_backend_cleanup(bridge);
 	list_del(&bridge->list);
-	if (list_empty(&agp_bridges))
-		agp_frontend_cleanup();
 	module_put(bridge->driver->owner);
 }
 EXPORT_SYMBOL_GPL(agp_remove_bridge);
diff --git a/drivers/char/agp/compat_ioctl.c b/drivers/char/agp/compat_ioctl.c
deleted file mode 100644
index 52ffe1706ce051..00000000000000
--- a/drivers/char/agp/compat_ioctl.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
- * AGPGART driver frontend compatibility ioctls
- * Copyright (C) 2004 Silicon Graphics, Inc.
- * Copyright (C) 2002-2003 Dave Jones
- * Copyright (C) 1999 Jeff Hartmann
- * Copyright (C) 1999 Precision Insight, Inc.
- * Copyright (C) 1999 Xi Graphics, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
- * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/fs.h>
-#include <linux/agpgart.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include "agp.h"
-#include "compat_ioctl.h"
-
-static int compat_agpioc_info_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_info32 userinfo;
-	struct agp_kern_info kerninfo;
-
-	agp_copy_info(agp_bridge, &kerninfo);
-
-	userinfo.version.major = kerninfo.version.major;
-	userinfo.version.minor = kerninfo.version.minor;
-	userinfo.bridge_id = kerninfo.device->vendor |
-	    (kerninfo.device->device << 16);
-	userinfo.agp_mode = kerninfo.mode;
-	userinfo.aper_base = (compat_long_t)kerninfo.aper_base;
-	userinfo.aper_size = kerninfo.aper_size;
-	userinfo.pg_total = userinfo.pg_system = kerninfo.max_memory;
-	userinfo.pg_used = kerninfo.current_memory;
-
-	if (copy_to_user(arg, &userinfo, sizeof(userinfo)))
-		return -EFAULT;
-
-	return 0;
-}
-
-static int compat_agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_region32 ureserve;
-	struct agp_region kreserve;
-	struct agp_client *client;
-	struct agp_file_private *client_priv;
-
-	DBG("");
-	if (copy_from_user(&ureserve, arg, sizeof(ureserve)))
-		return -EFAULT;
-
-	if ((unsigned) ureserve.seg_count >= ~0U/sizeof(struct agp_segment32))
-		return -EFAULT;
-
-	kreserve.pid = ureserve.pid;
-	kreserve.seg_count = ureserve.seg_count;
-
-	client = agp_find_client_by_pid(kreserve.pid);
-
-	if (kreserve.seg_count == 0) {
-		/* remove a client */
-		client_priv = agp_find_private(kreserve.pid);
-
-		if (client_priv != NULL) {
-			set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
-			set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
-		}
-		if (client == NULL) {
-			/* client is already removed */
-			return 0;
-		}
-		return agp_remove_client(kreserve.pid);
-	} else {
-		struct agp_segment32 *usegment;
-		struct agp_segment *ksegment;
-		int seg;
-
-		if (ureserve.seg_count >= 16384)
-			return -EINVAL;
-
-		usegment = kmalloc_array(ureserve.seg_count,
-					 sizeof(*usegment),
-					 GFP_KERNEL);
-		if (!usegment)
-			return -ENOMEM;
-
-		ksegment = kmalloc_array(kreserve.seg_count,
-					 sizeof(*ksegment),
-					 GFP_KERNEL);
-		if (!ksegment) {
-			kfree(usegment);
-			return -ENOMEM;
-		}
-
-		if (copy_from_user(usegment, (void __user *) ureserve.seg_list,
-				   sizeof(*usegment) * ureserve.seg_count)) {
-			kfree(usegment);
-			kfree(ksegment);
-			return -EFAULT;
-		}
-
-		for (seg = 0; seg < ureserve.seg_count; seg++) {
-			ksegment[seg].pg_start = usegment[seg].pg_start;
-			ksegment[seg].pg_count = usegment[seg].pg_count;
-			ksegment[seg].prot = usegment[seg].prot;
-		}
-
-		kfree(usegment);
-		kreserve.seg_list = ksegment;
-
-		if (client == NULL) {
-			/* Create the client and add the segment */
-			client = agp_create_client(kreserve.pid);
-
-			if (client == NULL) {
-				kfree(ksegment);
-				return -ENOMEM;
-			}
-			client_priv = agp_find_private(kreserve.pid);
-
-			if (client_priv != NULL) {
-				set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
-				set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
-			}
-		}
-		return agp_create_segment(client, &kreserve);
-	}
-	/* Will never really happen */
-	return -EINVAL;
-}
-
-static int compat_agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_memory *memory;
-	struct agp_allocate32 alloc;
-
-	DBG("");
-	if (copy_from_user(&alloc, arg, sizeof(alloc)))
-		return -EFAULT;
-
-	memory = agp_allocate_memory_wrap(alloc.pg_count, alloc.type);
-
-	if (memory == NULL)
-		return -ENOMEM;
-
-	alloc.key = memory->key;
-	alloc.physical = memory->physical;
-
-	if (copy_to_user(arg, &alloc, sizeof(alloc))) {
-		agp_free_memory_wrap(memory);
-		return -EFAULT;
-	}
-	return 0;
-}
-
-static int compat_agpioc_bind_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_bind32 bind_info;
-	struct agp_memory *memory;
-
-	DBG("");
-	if (copy_from_user(&bind_info, arg, sizeof(bind_info)))
-		return -EFAULT;
-
-	memory = agp_find_mem_by_key(bind_info.key);
-
-	if (memory == NULL)
-		return -EINVAL;
-
-	return agp_bind_memory(memory, bind_info.pg_start);
-}
-
-static int compat_agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_memory *memory;
-	struct agp_unbind32 unbind;
-
-	DBG("");
-	if (copy_from_user(&unbind, arg, sizeof(unbind)))
-		return -EFAULT;
-
-	memory = agp_find_mem_by_key(unbind.key);
-
-	if (memory == NULL)
-		return -EINVAL;
-
-	return agp_unbind_memory(memory);
-}
-
-long compat_agp_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	struct agp_file_private *curr_priv = file->private_data;
-	int ret_val = -ENOTTY;
-
-	mutex_lock(&(agp_fe.agp_mutex));
-
-	if ((agp_fe.current_controller == NULL) &&
-	    (cmd != AGPIOC_ACQUIRE32)) {
-		ret_val = -EINVAL;
-		goto ioctl_out;
-	}
-	if ((agp_fe.backend_acquired != true) &&
-	    (cmd != AGPIOC_ACQUIRE32)) {
-		ret_val = -EBUSY;
-		goto ioctl_out;
-	}
-	if (cmd != AGPIOC_ACQUIRE32) {
-		if (!(test_bit(AGP_FF_IS_CONTROLLER, &curr_priv->access_flags))) {
-			ret_val = -EPERM;
-			goto ioctl_out;
-		}
-		/* Use the original pid of the controller,
-		 * in case it's threaded */
-
-		if (agp_fe.current_controller->pid != curr_priv->my_pid) {
-			ret_val = -EBUSY;
-			goto ioctl_out;
-		}
-	}
-
-	switch (cmd) {
-	case AGPIOC_INFO32:
-		ret_val = compat_agpioc_info_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_ACQUIRE32:
-		ret_val = agpioc_acquire_wrap(curr_priv);
-		break;
-
-	case AGPIOC_RELEASE32:
-		ret_val = agpioc_release_wrap(curr_priv);
-		break;
-
-	case AGPIOC_SETUP32:
-		ret_val = agpioc_setup_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_RESERVE32:
-		ret_val = compat_agpioc_reserve_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_PROTECT32:
-		ret_val = agpioc_protect_wrap(curr_priv);
-		break;
-
-	case AGPIOC_ALLOCATE32:
-		ret_val = compat_agpioc_allocate_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_DEALLOCATE32:
-		ret_val = agpioc_deallocate_wrap(curr_priv, (int) arg);
-		break;
-
-	case AGPIOC_BIND32:
-		ret_val = compat_agpioc_bind_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_UNBIND32:
-		ret_val = compat_agpioc_unbind_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_CHIPSET_FLUSH32:
-		break;
-	}
-
-ioctl_out:
-	DBG("ioctl returns %d\n", ret_val);
-	mutex_unlock(&(agp_fe.agp_mutex));
-	return ret_val;
-}
-
diff --git a/drivers/char/agp/compat_ioctl.h b/drivers/char/agp/compat_ioctl.h
deleted file mode 100644
index f30e0fd9796353..00000000000000
--- a/drivers/char/agp/compat_ioctl.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Copyright (C) 1999 Jeff Hartmann
- * Copyright (C) 1999 Precision Insight, Inc.
- * Copyright (C) 1999 Xi Graphics, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
- * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- */
-
-#ifndef _AGP_COMPAT_IOCTL_H
-#define _AGP_COMPAT_IOCTL_H
-
-#include <linux/compat.h>
-#include <linux/agpgart.h>
-
-#define AGPIOC_INFO32       _IOR (AGPIOC_BASE, 0, compat_uptr_t)
-#define AGPIOC_ACQUIRE32    _IO  (AGPIOC_BASE, 1)
-#define AGPIOC_RELEASE32    _IO  (AGPIOC_BASE, 2)
-#define AGPIOC_SETUP32      _IOW (AGPIOC_BASE, 3, compat_uptr_t)
-#define AGPIOC_RESERVE32    _IOW (AGPIOC_BASE, 4, compat_uptr_t)
-#define AGPIOC_PROTECT32    _IOW (AGPIOC_BASE, 5, compat_uptr_t)
-#define AGPIOC_ALLOCATE32   _IOWR(AGPIOC_BASE, 6, compat_uptr_t)
-#define AGPIOC_DEALLOCATE32 _IOW (AGPIOC_BASE, 7, compat_int_t)
-#define AGPIOC_BIND32       _IOW (AGPIOC_BASE, 8, compat_uptr_t)
-#define AGPIOC_UNBIND32     _IOW (AGPIOC_BASE, 9, compat_uptr_t)
-#define AGPIOC_CHIPSET_FLUSH32 _IO (AGPIOC_BASE, 10)
-
-struct agp_info32 {
-	struct agp_version version;	/* version of the driver        */
-	u32 bridge_id;		/* bridge vendor/device         */
-	u32 agp_mode;		/* mode info of bridge          */
-	compat_long_t aper_base;	/* base of aperture             */
-	compat_size_t aper_size;	/* size of aperture             */
-	compat_size_t pg_total;	/* max pages (swap + system)    */
-	compat_size_t pg_system;	/* max pages (system)           */
-	compat_size_t pg_used;		/* current pages used           */
-};
-
-/*
- * The "prot" down below needs still a "sleep" flag somehow ...
- */
-struct agp_segment32 {
-	compat_off_t pg_start;		/* starting page to populate    */
-	compat_size_t pg_count;	/* number of pages              */
-	compat_int_t prot;		/* prot flags for mmap          */
-};
-
-struct agp_region32 {
-	compat_pid_t pid;		/* pid of process               */
-	compat_size_t seg_count;	/* number of segments           */
-	struct agp_segment32 *seg_list;
-};
-
-struct agp_allocate32 {
-	compat_int_t key;		/* tag of allocation            */
-	compat_size_t pg_count;	/* number of pages              */
-	u32 type;		/* 0 == normal, other devspec   */
-	u32 physical;           /* device specific (some devices
-				 * need a phys address of the
-				 * actual page behind the gatt
-				 * table)                        */
-};
-
-struct agp_bind32 {
-	compat_int_t key;		/* tag of allocation            */
-	compat_off_t pg_start;		/* starting page to populate    */
-};
-
-struct agp_unbind32 {
-	compat_int_t key;		/* tag of allocation            */
-	u32 priority;		/* priority for paging out      */
-};
-
-extern struct agp_front_data agp_fe;
-
-int agpioc_acquire_wrap(struct agp_file_private *priv);
-int agpioc_release_wrap(struct agp_file_private *priv);
-int agpioc_protect_wrap(struct agp_file_private *priv);
-int agpioc_setup_wrap(struct agp_file_private *priv, void __user *arg);
-int agpioc_deallocate_wrap(struct agp_file_private *priv, int arg);
-struct agp_file_private *agp_find_private(pid_t pid);
-struct agp_client *agp_create_client(pid_t id);
-int agp_remove_client(pid_t id);
-int agp_create_segment(struct agp_client *client, struct agp_region *region);
-void agp_free_memory_wrap(struct agp_memory *memory);
-struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type);
-struct agp_memory *agp_find_mem_by_key(int key);
-struct agp_client *agp_find_client_by_pid(pid_t id);
-
-#endif /* _AGP_COMPAT_H */
diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
deleted file mode 100644
index 321118a9cfa52b..00000000000000
--- a/drivers/char/agp/frontend.c
+++ /dev/null
@@ -1,1068 +0,0 @@
-/*
- * AGPGART driver frontend
- * Copyright (C) 2004 Silicon Graphics, Inc.
- * Copyright (C) 2002-2003 Dave Jones
- * Copyright (C) 1999 Jeff Hartmann
- * Copyright (C) 1999 Precision Insight, Inc.
- * Copyright (C) 1999 Xi Graphics, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
- * JEFF HARTMANN, OR ANY OTHER CONTRIBUTORS BE LIABLE FOR ANY CLAIM,
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE
- * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- *
- */
-
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/mman.h>
-#include <linux/pci.h>
-#include <linux/miscdevice.h>
-#include <linux/agp_backend.h>
-#include <linux/agpgart.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/fs.h>
-#include <linux/sched.h>
-#include <linux/uaccess.h>
-
-#include "agp.h"
-#include "compat_ioctl.h"
-
-struct agp_front_data agp_fe;
-
-struct agp_memory *agp_find_mem_by_key(int key)
-{
-	struct agp_memory *curr;
-
-	if (agp_fe.current_controller == NULL)
-		return NULL;
-
-	curr = agp_fe.current_controller->pool;
-
-	while (curr != NULL) {
-		if (curr->key == key)
-			break;
-		curr = curr->next;
-	}
-
-	DBG("key=%d -> mem=%p", key, curr);
-	return curr;
-}
-
-static void agp_remove_from_pool(struct agp_memory *temp)
-{
-	struct agp_memory *prev;
-	struct agp_memory *next;
-
-	/* Check to see if this is even in the memory pool */
-
-	DBG("mem=%p", temp);
-	if (agp_find_mem_by_key(temp->key) != NULL) {
-		next = temp->next;
-		prev = temp->prev;
-
-		if (prev != NULL) {
-			prev->next = next;
-			if (next != NULL)
-				next->prev = prev;
-
-		} else {
-			/* This is the first item on the list */
-			if (next != NULL)
-				next->prev = NULL;
-
-			agp_fe.current_controller->pool = next;
-		}
-	}
-}
-
-/*
- * Routines for managing each client's segment list -
- * These routines handle adding and removing segments
- * to each auth'ed client.
- */
-
-static struct
-agp_segment_priv *agp_find_seg_in_client(const struct agp_client *client,
-						unsigned long offset,
-					    int size, pgprot_t page_prot)
-{
-	struct agp_segment_priv *seg;
-	int i;
-	off_t pg_start;
-	size_t pg_count;
-
-	pg_start = offset / 4096;
-	pg_count = size / 4096;
-	seg = *(client->segments);
-
-	for (i = 0; i < client->num_segments; i++) {
-		if ((seg[i].pg_start == pg_start) &&
-		    (seg[i].pg_count == pg_count) &&
-		    (pgprot_val(seg[i].prot) == pgprot_val(page_prot))) {
-			return seg + i;
-		}
-	}
-
-	return NULL;
-}
-
-static void agp_remove_seg_from_client(struct agp_client *client)
-{
-	DBG("client=%p", client);
-
-	if (client->segments != NULL) {
-		if (*(client->segments) != NULL) {
-			DBG("Freeing %p from client %p", *(client->segments), client);
-			kfree(*(client->segments));
-		}
-		DBG("Freeing %p from client %p", client->segments, client);
-		kfree(client->segments);
-		client->segments = NULL;
-	}
-}
-
-static void agp_add_seg_to_client(struct agp_client *client,
-			       struct agp_segment_priv ** seg, int num_segments)
-{
-	struct agp_segment_priv **prev_seg;
-
-	prev_seg = client->segments;
-
-	if (prev_seg != NULL)
-		agp_remove_seg_from_client(client);
-
-	DBG("Adding seg %p (%d segments) to client %p", seg, num_segments, client);
-	client->num_segments = num_segments;
-	client->segments = seg;
-}
-
-static pgprot_t agp_convert_mmap_flags(int prot)
-{
-	unsigned long prot_bits;
-
-	prot_bits = calc_vm_prot_bits(prot, 0) | VM_SHARED;
-	return vm_get_page_prot(prot_bits);
-}
-
-int agp_create_segment(struct agp_client *client, struct agp_region *region)
-{
-	struct agp_segment_priv **ret_seg;
-	struct agp_segment_priv *seg;
-	struct agp_segment *user_seg;
-	size_t i;
-
-	seg = kzalloc((sizeof(struct agp_segment_priv) * region->seg_count), GFP_KERNEL);
-	if (seg == NULL) {
-		kfree(region->seg_list);
-		region->seg_list = NULL;
-		return -ENOMEM;
-	}
-	user_seg = region->seg_list;
-
-	for (i = 0; i < region->seg_count; i++) {
-		seg[i].pg_start = user_seg[i].pg_start;
-		seg[i].pg_count = user_seg[i].pg_count;
-		seg[i].prot = agp_convert_mmap_flags(user_seg[i].prot);
-	}
-	kfree(region->seg_list);
-	region->seg_list = NULL;
-
-	ret_seg = kmalloc(sizeof(void *), GFP_KERNEL);
-	if (ret_seg == NULL) {
-		kfree(seg);
-		return -ENOMEM;
-	}
-	*ret_seg = seg;
-	agp_add_seg_to_client(client, ret_seg, region->seg_count);
-	return 0;
-}
-
-/* End - Routines for managing each client's segment list */
-
-/* This function must only be called when current_controller != NULL */
-static void agp_insert_into_pool(struct agp_memory * temp)
-{
-	struct agp_memory *prev;
-
-	prev = agp_fe.current_controller->pool;
-
-	if (prev != NULL) {
-		prev->prev = temp;
-		temp->next = prev;
-	}
-	agp_fe.current_controller->pool = temp;
-}
-
-
-/* File private list routines */
-
-struct agp_file_private *agp_find_private(pid_t pid)
-{
-	struct agp_file_private *curr;
-
-	curr = agp_fe.file_priv_list;
-
-	while (curr != NULL) {
-		if (curr->my_pid == pid)
-			return curr;
-		curr = curr->next;
-	}
-
-	return NULL;
-}
-
-static void agp_insert_file_private(struct agp_file_private * priv)
-{
-	struct agp_file_private *prev;
-
-	prev = agp_fe.file_priv_list;
-
-	if (prev != NULL)
-		prev->prev = priv;
-	priv->next = prev;
-	agp_fe.file_priv_list = priv;
-}
-
-static void agp_remove_file_private(struct agp_file_private * priv)
-{
-	struct agp_file_private *next;
-	struct agp_file_private *prev;
-
-	next = priv->next;
-	prev = priv->prev;
-
-	if (prev != NULL) {
-		prev->next = next;
-
-		if (next != NULL)
-			next->prev = prev;
-
-	} else {
-		if (next != NULL)
-			next->prev = NULL;
-
-		agp_fe.file_priv_list = next;
-	}
-}
-
-/* End - File flag list routines */
-
-/*
- * Wrappers for agp_free_memory & agp_allocate_memory
- * These make sure that internal lists are kept updated.
- */
-void agp_free_memory_wrap(struct agp_memory *memory)
-{
-	agp_remove_from_pool(memory);
-	agp_free_memory(memory);
-}
-
-struct agp_memory *agp_allocate_memory_wrap(size_t pg_count, u32 type)
-{
-	struct agp_memory *memory;
-
-	memory = agp_allocate_memory(agp_bridge, pg_count, type);
-	if (memory == NULL)
-		return NULL;
-
-	agp_insert_into_pool(memory);
-	return memory;
-}
-
-/* Routines for managing the list of controllers -
- * These routines manage the current controller, and the list of
- * controllers
- */
-
-static struct agp_controller *agp_find_controller_by_pid(pid_t id)
-{
-	struct agp_controller *controller;
-
-	controller = agp_fe.controllers;
-
-	while (controller != NULL) {
-		if (controller->pid == id)
-			return controller;
-		controller = controller->next;
-	}
-
-	return NULL;
-}
-
-static struct agp_controller *agp_create_controller(pid_t id)
-{
-	struct agp_controller *controller;
-
-	controller = kzalloc(sizeof(struct agp_controller), GFP_KERNEL);
-	if (controller == NULL)
-		return NULL;
-
-	controller->pid = id;
-	return controller;
-}
-
-static int agp_insert_controller(struct agp_controller *controller)
-{
-	struct agp_controller *prev_controller;
-
-	prev_controller = agp_fe.controllers;
-	controller->next = prev_controller;
-
-	if (prev_controller != NULL)
-		prev_controller->prev = controller;
-
-	agp_fe.controllers = controller;
-
-	return 0;
-}
-
-static void agp_remove_all_clients(struct agp_controller *controller)
-{
-	struct agp_client *client;
-	struct agp_client *temp;
-
-	client = controller->clients;
-
-	while (client) {
-		struct agp_file_private *priv;
-
-		temp = client;
-		agp_remove_seg_from_client(temp);
-		priv = agp_find_private(temp->pid);
-
-		if (priv != NULL) {
-			clear_bit(AGP_FF_IS_VALID, &priv->access_flags);
-			clear_bit(AGP_FF_IS_CLIENT, &priv->access_flags);
-		}
-		client = client->next;
-		kfree(temp);
-	}
-}
-
-static void agp_remove_all_memory(struct agp_controller *controller)
-{
-	struct agp_memory *memory;
-	struct agp_memory *temp;
-
-	memory = controller->pool;
-
-	while (memory) {
-		temp = memory;
-		memory = memory->next;
-		agp_free_memory_wrap(temp);
-	}
-}
-
-static int agp_remove_controller(struct agp_controller *controller)
-{
-	struct agp_controller *prev_controller;
-	struct agp_controller *next_controller;
-
-	prev_controller = controller->prev;
-	next_controller = controller->next;
-
-	if (prev_controller != NULL) {
-		prev_controller->next = next_controller;
-		if (next_controller != NULL)
-			next_controller->prev = prev_controller;
-
-	} else {
-		if (next_controller != NULL)
-			next_controller->prev = NULL;
-
-		agp_fe.controllers = next_controller;
-	}
-
-	agp_remove_all_memory(controller);
-	agp_remove_all_clients(controller);
-
-	if (agp_fe.current_controller == controller) {
-		agp_fe.current_controller = NULL;
-		agp_fe.backend_acquired = false;
-		agp_backend_release(agp_bridge);
-	}
-	kfree(controller);
-	return 0;
-}
-
-static void agp_controller_make_current(struct agp_controller *controller)
-{
-	struct agp_client *clients;
-
-	clients = controller->clients;
-
-	while (clients != NULL) {
-		struct agp_file_private *priv;
-
-		priv = agp_find_private(clients->pid);
-
-		if (priv != NULL) {
-			set_bit(AGP_FF_IS_VALID, &priv->access_flags);
-			set_bit(AGP_FF_IS_CLIENT, &priv->access_flags);
-		}
-		clients = clients->next;
-	}
-
-	agp_fe.current_controller = controller;
-}
-
-static void agp_controller_release_current(struct agp_controller *controller,
-				      struct agp_file_private *controller_priv)
-{
-	struct agp_client *clients;
-
-	clear_bit(AGP_FF_IS_VALID, &controller_priv->access_flags);
-	clients = controller->clients;
-
-	while (clients != NULL) {
-		struct agp_file_private *priv;
-
-		priv = agp_find_private(clients->pid);
-
-		if (priv != NULL)
-			clear_bit(AGP_FF_IS_VALID, &priv->access_flags);
-
-		clients = clients->next;
-	}
-
-	agp_fe.current_controller = NULL;
-	agp_fe.used_by_controller = false;
-	agp_backend_release(agp_bridge);
-}
-
-/*
- * Routines for managing client lists -
- * These routines are for managing the list of auth'ed clients.
- */
-
-static struct agp_client
-*agp_find_client_in_controller(struct agp_controller *controller, pid_t id)
-{
-	struct agp_client *client;
-
-	if (controller == NULL)
-		return NULL;
-
-	client = controller->clients;
-
-	while (client != NULL) {
-		if (client->pid == id)
-			return client;
-		client = client->next;
-	}
-
-	return NULL;
-}
-
-static struct agp_controller *agp_find_controller_for_client(pid_t id)
-{
-	struct agp_controller *controller;
-
-	controller = agp_fe.controllers;
-
-	while (controller != NULL) {
-		if ((agp_find_client_in_controller(controller, id)) != NULL)
-			return controller;
-		controller = controller->next;
-	}
-
-	return NULL;
-}
-
-struct agp_client *agp_find_client_by_pid(pid_t id)
-{
-	struct agp_client *temp;
-
-	if (agp_fe.current_controller == NULL)
-		return NULL;
-
-	temp = agp_find_client_in_controller(agp_fe.current_controller, id);
-	return temp;
-}
-
-static void agp_insert_client(struct agp_client *client)
-{
-	struct agp_client *prev_client;
-
-	prev_client = agp_fe.current_controller->clients;
-	client->next = prev_client;
-
-	if (prev_client != NULL)
-		prev_client->prev = client;
-
-	agp_fe.current_controller->clients = client;
-	agp_fe.current_controller->num_clients++;
-}
-
-struct agp_client *agp_create_client(pid_t id)
-{
-	struct agp_client *new_client;
-
-	new_client = kzalloc(sizeof(struct agp_client), GFP_KERNEL);
-	if (new_client == NULL)
-		return NULL;
-
-	new_client->pid = id;
-	agp_insert_client(new_client);
-	return new_client;
-}
-
-int agp_remove_client(pid_t id)
-{
-	struct agp_client *client;
-	struct agp_client *prev_client;
-	struct agp_client *next_client;
-	struct agp_controller *controller;
-
-	controller = agp_find_controller_for_client(id);
-	if (controller == NULL)
-		return -EINVAL;
-
-	client = agp_find_client_in_controller(controller, id);
-	if (client == NULL)
-		return -EINVAL;
-
-	prev_client = client->prev;
-	next_client = client->next;
-
-	if (prev_client != NULL) {
-		prev_client->next = next_client;
-		if (next_client != NULL)
-			next_client->prev = prev_client;
-
-	} else {
-		if (next_client != NULL)
-			next_client->prev = NULL;
-		controller->clients = next_client;
-	}
-
-	controller->num_clients--;
-	agp_remove_seg_from_client(client);
-	kfree(client);
-	return 0;
-}
-
-/* End - Routines for managing client lists */
-
-/* File Operations */
-
-static int agp_mmap(struct file *file, struct vm_area_struct *vma)
-{
-	unsigned int size, current_size;
-	unsigned long offset;
-	struct agp_client *client;
-	struct agp_file_private *priv = file->private_data;
-	struct agp_kern_info kerninfo;
-
-	mutex_lock(&(agp_fe.agp_mutex));
-
-	if (agp_fe.backend_acquired != true)
-		goto out_eperm;
-
-	if (!(test_bit(AGP_FF_IS_VALID, &priv->access_flags)))
-		goto out_eperm;
-
-	agp_copy_info(agp_bridge, &kerninfo);
-	size = vma->vm_end - vma->vm_start;
-	current_size = kerninfo.aper_size;
-	current_size = current_size * 0x100000;
-	offset = vma->vm_pgoff << PAGE_SHIFT;
-	DBG("%lx:%lx", offset, offset+size);
-
-	if (test_bit(AGP_FF_IS_CLIENT, &priv->access_flags)) {
-		if ((size + offset) > current_size)
-			goto out_inval;
-
-		client = agp_find_client_by_pid(current->pid);
-
-		if (client == NULL)
-			goto out_eperm;
-
-		if (!agp_find_seg_in_client(client, offset, size, vma->vm_page_prot))
-			goto out_inval;
-
-		DBG("client vm_ops=%p", kerninfo.vm_ops);
-		if (kerninfo.vm_ops) {
-			vma->vm_ops = kerninfo.vm_ops;
-		} else if (io_remap_pfn_range(vma, vma->vm_start,
-				(kerninfo.aper_base + offset) >> PAGE_SHIFT,
-				size,
-				pgprot_writecombine(vma->vm_page_prot))) {
-			goto out_again;
-		}
-		mutex_unlock(&(agp_fe.agp_mutex));
-		return 0;
-	}
-
-	if (test_bit(AGP_FF_IS_CONTROLLER, &priv->access_flags)) {
-		if (size != current_size)
-			goto out_inval;
-
-		DBG("controller vm_ops=%p", kerninfo.vm_ops);
-		if (kerninfo.vm_ops) {
-			vma->vm_ops = kerninfo.vm_ops;
-		} else if (io_remap_pfn_range(vma, vma->vm_start,
-				kerninfo.aper_base >> PAGE_SHIFT,
-				size,
-				pgprot_writecombine(vma->vm_page_prot))) {
-			goto out_again;
-		}
-		mutex_unlock(&(agp_fe.agp_mutex));
-		return 0;
-	}
-
-out_eperm:
-	mutex_unlock(&(agp_fe.agp_mutex));
-	return -EPERM;
-
-out_inval:
-	mutex_unlock(&(agp_fe.agp_mutex));
-	return -EINVAL;
-
-out_again:
-	mutex_unlock(&(agp_fe.agp_mutex));
-	return -EAGAIN;
-}
-
-static int agp_release(struct inode *inode, struct file *file)
-{
-	struct agp_file_private *priv = file->private_data;
-
-	mutex_lock(&(agp_fe.agp_mutex));
-
-	DBG("priv=%p", priv);
-
-	if (test_bit(AGP_FF_IS_CONTROLLER, &priv->access_flags)) {
-		struct agp_controller *controller;
-
-		controller = agp_find_controller_by_pid(priv->my_pid);
-
-		if (controller != NULL) {
-			if (controller == agp_fe.current_controller)
-				agp_controller_release_current(controller, priv);
-			agp_remove_controller(controller);
-			controller = NULL;
-		}
-	}
-
-	if (test_bit(AGP_FF_IS_CLIENT, &priv->access_flags))
-		agp_remove_client(priv->my_pid);
-
-	agp_remove_file_private(priv);
-	kfree(priv);
-	file->private_data = NULL;
-	mutex_unlock(&(agp_fe.agp_mutex));
-	return 0;
-}
-
-static int agp_open(struct inode *inode, struct file *file)
-{
-	int minor = iminor(inode);
-	struct agp_file_private *priv;
-	struct agp_client *client;
-
-	if (minor != AGPGART_MINOR)
-		return -ENXIO;
-
-	mutex_lock(&(agp_fe.agp_mutex));
-
-	priv = kzalloc(sizeof(struct agp_file_private), GFP_KERNEL);
-	if (priv == NULL) {
-		mutex_unlock(&(agp_fe.agp_mutex));
-		return -ENOMEM;
-	}
-
-	set_bit(AGP_FF_ALLOW_CLIENT, &priv->access_flags);
-	priv->my_pid = current->pid;
-
-	if (capable(CAP_SYS_RAWIO))
-		/* Root priv, can be controller */
-		set_bit(AGP_FF_ALLOW_CONTROLLER, &priv->access_flags);
-
-	client = agp_find_client_by_pid(current->pid);
-
-	if (client != NULL) {
-		set_bit(AGP_FF_IS_CLIENT, &priv->access_flags);
-		set_bit(AGP_FF_IS_VALID, &priv->access_flags);
-	}
-	file->private_data = (void *) priv;
-	agp_insert_file_private(priv);
-	DBG("private=%p, client=%p", priv, client);
-
-	mutex_unlock(&(agp_fe.agp_mutex));
-
-	return 0;
-}
-
-static int agpioc_info_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_info userinfo;
-	struct agp_kern_info kerninfo;
-
-	agp_copy_info(agp_bridge, &kerninfo);
-
-	memset(&userinfo, 0, sizeof(userinfo));
-	userinfo.version.major = kerninfo.version.major;
-	userinfo.version.minor = kerninfo.version.minor;
-	userinfo.bridge_id = kerninfo.device->vendor |
-	    (kerninfo.device->device << 16);
-	userinfo.agp_mode = kerninfo.mode;
-	userinfo.aper_base = kerninfo.aper_base;
-	userinfo.aper_size = kerninfo.aper_size;
-	userinfo.pg_total = userinfo.pg_system = kerninfo.max_memory;
-	userinfo.pg_used = kerninfo.current_memory;
-
-	if (copy_to_user(arg, &userinfo, sizeof(struct agp_info)))
-		return -EFAULT;
-
-	return 0;
-}
-
-int agpioc_acquire_wrap(struct agp_file_private *priv)
-{
-	struct agp_controller *controller;
-
-	DBG("");
-
-	if (!(test_bit(AGP_FF_ALLOW_CONTROLLER, &priv->access_flags)))
-		return -EPERM;
-
-	if (agp_fe.current_controller != NULL)
-		return -EBUSY;
-
-	if (!agp_bridge)
-		return -ENODEV;
-
-        if (atomic_read(&agp_bridge->agp_in_use))
-                return -EBUSY;
-
-	atomic_inc(&agp_bridge->agp_in_use);
-
-	agp_fe.backend_acquired = true;
-
-	controller = agp_find_controller_by_pid(priv->my_pid);
-
-	if (controller != NULL) {
-		agp_controller_make_current(controller);
-	} else {
-		controller = agp_create_controller(priv->my_pid);
-
-		if (controller == NULL) {
-			agp_fe.backend_acquired = false;
-			agp_backend_release(agp_bridge);
-			return -ENOMEM;
-		}
-		agp_insert_controller(controller);
-		agp_controller_make_current(controller);
-	}
-
-	set_bit(AGP_FF_IS_CONTROLLER, &priv->access_flags);
-	set_bit(AGP_FF_IS_VALID, &priv->access_flags);
-	return 0;
-}
-
-int agpioc_release_wrap(struct agp_file_private *priv)
-{
-	DBG("");
-	agp_controller_release_current(agp_fe.current_controller, priv);
-	return 0;
-}
-
-int agpioc_setup_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_setup mode;
-
-	DBG("");
-	if (copy_from_user(&mode, arg, sizeof(struct agp_setup)))
-		return -EFAULT;
-
-	agp_enable(agp_bridge, mode.agp_mode);
-	return 0;
-}
-
-static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_region reserve;
-	struct agp_client *client;
-	struct agp_file_private *client_priv;
-
-	DBG("");
-	if (copy_from_user(&reserve, arg, sizeof(struct agp_region)))
-		return -EFAULT;
-
-	if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment))
-		return -EFAULT;
-
-	client = agp_find_client_by_pid(reserve.pid);
-
-	if (reserve.seg_count == 0) {
-		/* remove a client */
-		client_priv = agp_find_private(reserve.pid);
-
-		if (client_priv != NULL) {
-			set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
-			set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
-		}
-		if (client == NULL) {
-			/* client is already removed */
-			return 0;
-		}
-		return agp_remove_client(reserve.pid);
-	} else {
-		struct agp_segment *segment;
-
-		if (reserve.seg_count >= 16384)
-			return -EINVAL;
-
-		segment = kmalloc((sizeof(struct agp_segment) * reserve.seg_count),
-				  GFP_KERNEL);
-
-		if (segment == NULL)
-			return -ENOMEM;
-
-		if (copy_from_user(segment, (void __user *) reserve.seg_list,
-				   sizeof(struct agp_segment) * reserve.seg_count)) {
-			kfree(segment);
-			return -EFAULT;
-		}
-		reserve.seg_list = segment;
-
-		if (client == NULL) {
-			/* Create the client and add the segment */
-			client = agp_create_client(reserve.pid);
-
-			if (client == NULL) {
-				kfree(segment);
-				return -ENOMEM;
-			}
-			client_priv = agp_find_private(reserve.pid);
-
-			if (client_priv != NULL) {
-				set_bit(AGP_FF_IS_CLIENT, &client_priv->access_flags);
-				set_bit(AGP_FF_IS_VALID, &client_priv->access_flags);
-			}
-		}
-		return agp_create_segment(client, &reserve);
-	}
-	/* Will never really happen */
-	return -EINVAL;
-}
-
-int agpioc_protect_wrap(struct agp_file_private *priv)
-{
-	DBG("");
-	/* This function is not currently implemented */
-	return -EINVAL;
-}
-
-static int agpioc_allocate_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_memory *memory;
-	struct agp_allocate alloc;
-
-	DBG("");
-	if (copy_from_user(&alloc, arg, sizeof(struct agp_allocate)))
-		return -EFAULT;
-
-	if (alloc.type >= AGP_USER_TYPES)
-		return -EINVAL;
-
-	memory = agp_allocate_memory_wrap(alloc.pg_count, alloc.type);
-
-	if (memory == NULL)
-		return -ENOMEM;
-
-	alloc.key = memory->key;
-	alloc.physical = memory->physical;
-
-	if (copy_to_user(arg, &alloc, sizeof(struct agp_allocate))) {
-		agp_free_memory_wrap(memory);
-		return -EFAULT;
-	}
-	return 0;
-}
-
-int agpioc_deallocate_wrap(struct agp_file_private *priv, int arg)
-{
-	struct agp_memory *memory;
-
-	DBG("");
-	memory = agp_find_mem_by_key(arg);
-
-	if (memory == NULL)
-		return -EINVAL;
-
-	agp_free_memory_wrap(memory);
-	return 0;
-}
-
-static int agpioc_bind_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_bind bind_info;
-	struct agp_memory *memory;
-
-	DBG("");
-	if (copy_from_user(&bind_info, arg, sizeof(struct agp_bind)))
-		return -EFAULT;
-
-	memory = agp_find_mem_by_key(bind_info.key);
-
-	if (memory == NULL)
-		return -EINVAL;
-
-	return agp_bind_memory(memory, bind_info.pg_start);
-}
-
-static int agpioc_unbind_wrap(struct agp_file_private *priv, void __user *arg)
-{
-	struct agp_memory *memory;
-	struct agp_unbind unbind;
-
-	DBG("");
-	if (copy_from_user(&unbind, arg, sizeof(struct agp_unbind)))
-		return -EFAULT;
-
-	memory = agp_find_mem_by_key(unbind.key);
-
-	if (memory == NULL)
-		return -EINVAL;
-
-	return agp_unbind_memory(memory);
-}
-
-static long agp_ioctl(struct file *file,
-		     unsigned int cmd, unsigned long arg)
-{
-	struct agp_file_private *curr_priv = file->private_data;
-	int ret_val = -ENOTTY;
-
-	DBG("priv=%p, cmd=%x", curr_priv, cmd);
-	mutex_lock(&(agp_fe.agp_mutex));
-
-	if ((agp_fe.current_controller == NULL) &&
-	    (cmd != AGPIOC_ACQUIRE)) {
-		ret_val = -EINVAL;
-		goto ioctl_out;
-	}
-	if ((agp_fe.backend_acquired != true) &&
-	    (cmd != AGPIOC_ACQUIRE)) {
-		ret_val = -EBUSY;
-		goto ioctl_out;
-	}
-	if (cmd != AGPIOC_ACQUIRE) {
-		if (!(test_bit(AGP_FF_IS_CONTROLLER, &curr_priv->access_flags))) {
-			ret_val = -EPERM;
-			goto ioctl_out;
-		}
-		/* Use the original pid of the controller,
-		 * in case it's threaded */
-
-		if (agp_fe.current_controller->pid != curr_priv->my_pid) {
-			ret_val = -EBUSY;
-			goto ioctl_out;
-		}
-	}
-
-	switch (cmd) {
-	case AGPIOC_INFO:
-		ret_val = agpioc_info_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_ACQUIRE:
-		ret_val = agpioc_acquire_wrap(curr_priv);
-		break;
-
-	case AGPIOC_RELEASE:
-		ret_val = agpioc_release_wrap(curr_priv);
-		break;
-
-	case AGPIOC_SETUP:
-		ret_val = agpioc_setup_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_RESERVE:
-		ret_val = agpioc_reserve_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_PROTECT:
-		ret_val = agpioc_protect_wrap(curr_priv);
-		break;
-
-	case AGPIOC_ALLOCATE:
-		ret_val = agpioc_allocate_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_DEALLOCATE:
-		ret_val = agpioc_deallocate_wrap(curr_priv, (int) arg);
-		break;
-
-	case AGPIOC_BIND:
-		ret_val = agpioc_bind_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_UNBIND:
-		ret_val = agpioc_unbind_wrap(curr_priv, (void __user *) arg);
-		break;
-
-	case AGPIOC_CHIPSET_FLUSH:
-		break;
-	}
-
-ioctl_out:
-	DBG("ioctl returns %d\n", ret_val);
-	mutex_unlock(&(agp_fe.agp_mutex));
-	return ret_val;
-}
-
-static const struct file_operations agp_fops =
-{
-	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
-	.unlocked_ioctl	= agp_ioctl,
-#ifdef CONFIG_COMPAT
-	.compat_ioctl	= compat_agp_ioctl,
-#endif
-	.mmap		= agp_mmap,
-	.open		= agp_open,
-	.release	= agp_release,
-};
-
-static struct miscdevice agp_miscdev =
-{
-	.minor	= AGPGART_MINOR,
-	.name	= "agpgart",
-	.fops	= &agp_fops
-};
-
-int agp_frontend_initialize(void)
-{
-	memset(&agp_fe, 0, sizeof(struct agp_front_data));
-	mutex_init(&(agp_fe.agp_mutex));
-
-	if (misc_register(&agp_miscdev)) {
-		printk(KERN_ERR PFX "unable to get minor: %d\n", AGPGART_MINOR);
-		return -EIO;
-	}
-	return 0;
-}
-
-void agp_frontend_cleanup(void)
-{
-	misc_deregister(&agp_miscdev);
-}