drm: Add via unichrome support

Add DRM device driver for VIA Unichrome chipsets

From: Unichrome Project http://unichrome.sf.net, Erdi Chen, Thomas Hellstrom    Signed-off-by: Dave Airlie <airlied@linux.ie>

17 files changed, 5345 insertions, 0 deletions

diff --git a/drivers/char/drm/Kconfig b/drivers/char/drm/Kconfig
index c2b12eab67c9..123417e43040 100644
--- a/drivers/char/drm/Kconfig
+++ b/drivers/char/drm/Kconfig
@@ -96,3 +96,10 @@ config DRM_SIS
           chipset. If M is selected the module will be called sis. AGP
           support is required for this driver to work.
 
+config DRM_VIA
+        tristate "Via unichrome video cards"
+        depends on DRM
+        help
+          Choose this option if you have a Via unichrome or compatible video
+          chipset. If M is selected the module will be called via.
+
diff --git a/drivers/char/drm/Makefile b/drivers/char/drm/Makefile
index 7444dec40b94..8c12254f7eec 100644
--- a/drivers/char/drm/Makefile
+++ b/drivers/char/drm/Makefile
@@ -18,6 +18,7 @@ i915-objs   := i915_drv.o i915_dma.o i915_irq.o i915_mem.o
 radeon-objs := radeon_drv.o radeon_cp.o radeon_state.o radeon_mem.o radeon_irq.o
 ffb-objs    := ffb_drv.o ffb_context.o
 sis-objs    := sis_drv.o sis_ds.o sis_mm.o
+via-objs    := via_irq.o via_drv.o via_ds.o via_map.o via_mm.o via_dma.o via_verifier.o via_video.o
 
 ifeq ($(CONFIG_COMPAT),y)
 drm-objs    += drm_ioc32.o
@@ -35,4 +36,5 @@ obj-$(CONFIG_DRM_I830)	+= i830.o
 obj-$(CONFIG_DRM_I915)  += i915.o
 obj-$(CONFIG_DRM_FFB)   += ffb.o
 obj-$(CONFIG_DRM_SIS)   += sis.o
+obj-$(CONFIG_DRM_VIA)   +=via.o
 
diff --git a/drivers/char/drm/drm_pciids.h b/drivers/char/drm/drm_pciids.h
index 11c6950158b3..70ca4fa55c9d 100644
--- a/drivers/char/drm/drm_pciids.h
+++ b/drivers/char/drm/drm_pciids.h
@@ -223,3 +223,10 @@
         {0x8086, 0x2772, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
         {0, 0, 0}
 
+#define viadrv_PCI_IDS \
+        {0x1106, 0x3022, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
+        {0x1106, 0x3122, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
+        {0x1106, 0x7205, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
+        {0x1106, 0x7204, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, \
+        {0, 0, 0}
+
diff --git a/drivers/char/drm/via_3d_reg.h b/drivers/char/drm/via_3d_reg.h
new file mode 100644
index 000000000000..cf61bb514db1
--- /dev/null
+++ b/drivers/char/drm/via_3d_reg.h
@@ -0,0 +1,1651 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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 VIA_3D_REG_H
+#define VIA_3D_REG_H
+#define HC_REG_BASE             0x0400
+
+#define HC_REG_TRANS_SPACE      0x0040
+
+#define HC_ParaN_MASK           0xffffffff
+#define HC_Para_MASK            0x00ffffff
+#define HC_SubA_MASK            0xff000000
+#define HC_SubA_SHIFT           24
+/* Transmission Setting
+ */
+#define HC_REG_TRANS_SET        0x003c
+#define HC_ParaSubType_MASK     0xff000000
+#define HC_ParaType_MASK        0x00ff0000
+#define HC_ParaOS_MASK          0x0000ff00
+#define HC_ParaAdr_MASK         0x000000ff
+#define HC_ParaSubType_SHIFT    24
+#define HC_ParaType_SHIFT       16
+#define HC_ParaOS_SHIFT         8
+#define HC_ParaAdr_SHIFT        0
+
+#define HC_ParaType_CmdVdata    0x0000
+#define HC_ParaType_NotTex      0x0001
+#define HC_ParaType_Tex         0x0002
+#define HC_ParaType_Palette     0x0003
+#define HC_ParaType_PreCR       0x0010
+#define HC_ParaType_Auto        0x00fe
+
+/* Transmission Space
+ */
+#define HC_REG_Hpara0           0x0040
+#define HC_REG_HpataAF          0x02fc
+
+/* Read
+ */
+#define HC_REG_HREngSt          0x0000
+#define HC_REG_HRFIFOempty      0x0004
+#define HC_REG_HRFIFOfull       0x0008
+#define HC_REG_HRErr            0x000c
+#define HC_REG_FIFOstatus       0x0010
+/* HC_REG_HREngSt          0x0000
+ */
+#define HC_HDASZC_MASK          0x00010000
+#define HC_HSGEMI_MASK          0x0000f000
+#define HC_HLGEMISt_MASK        0x00000f00
+#define HC_HCRSt_MASK           0x00000080
+#define HC_HSE0St_MASK          0x00000040
+#define HC_HSE1St_MASK          0x00000020
+#define HC_HPESt_MASK           0x00000010
+#define HC_HXESt_MASK           0x00000008
+#define HC_HBESt_MASK           0x00000004
+#define HC_HE2St_MASK           0x00000002
+#define HC_HE3St_MASK           0x00000001
+/* HC_REG_HRFIFOempty      0x0004
+ */
+#define HC_HRZDempty_MASK       0x00000010
+#define HC_HRTXAempty_MASK      0x00000008
+#define HC_HRTXDempty_MASK      0x00000004
+#define HC_HWZDempty_MASK       0x00000002
+#define HC_HWCDempty_MASK       0x00000001
+/* HC_REG_HRFIFOfull       0x0008
+ */
+#define HC_HRZDfull_MASK        0x00000010
+#define HC_HRTXAfull_MASK       0x00000008
+#define HC_HRTXDfull_MASK       0x00000004
+#define HC_HWZDfull_MASK        0x00000002
+#define HC_HWCDfull_MASK        0x00000001
+/* HC_REG_HRErr            0x000c
+ */
+#define HC_HAGPCMErr_MASK       0x80000000
+#define HC_HAGPCMErrC_MASK      0x70000000
+/* HC_REG_FIFOstatus       0x0010
+ */
+#define HC_HRFIFOATall_MASK     0x80000000
+#define HC_HRFIFOATbusy_MASK    0x40000000
+#define HC_HRATFGMDo_MASK       0x00000100
+#define HC_HRATFGMDi_MASK       0x00000080
+#define HC_HRATFRZD_MASK        0x00000040
+#define HC_HRATFRTXA_MASK       0x00000020
+#define HC_HRATFRTXD_MASK       0x00000010
+#define HC_HRATFWZD_MASK        0x00000008
+#define HC_HRATFWCD_MASK        0x00000004
+#define HC_HRATTXTAG_MASK       0x00000002
+#define HC_HRATTXCH_MASK        0x00000001
+
+/* AGP Command Setting
+ */
+#define HC_SubA_HAGPBstL        0x0060
+#define HC_SubA_HAGPBendL       0x0061
+#define HC_SubA_HAGPCMNT        0x0062
+#define HC_SubA_HAGPBpL         0x0063
+#define HC_SubA_HAGPBpH         0x0064
+/* HC_SubA_HAGPCMNT        0x0062
+ */
+#define HC_HAGPCMNT_MASK        0x00800000
+#define HC_HCmdErrClr_MASK      0x00400000
+#define HC_HAGPBendH_MASK       0x0000ff00
+#define HC_HAGPBstH_MASK        0x000000ff
+#define HC_HAGPBendH_SHIFT      8
+#define HC_HAGPBstH_SHIFT       0
+/* HC_SubA_HAGPBpL         0x0063
+ */
+#define HC_HAGPBpL_MASK         0x00fffffc
+#define HC_HAGPBpID_MASK        0x00000003
+#define HC_HAGPBpID_PAUSE       0x00000000
+#define HC_HAGPBpID_JUMP        0x00000001
+#define HC_HAGPBpID_STOP        0x00000002
+/* HC_SubA_HAGPBpH         0x0064
+ */
+#define HC_HAGPBpH_MASK         0x00ffffff
+
+/* Miscellaneous Settings
+ */
+#define HC_SubA_HClipTB         0x0070
+#define HC_SubA_HClipLR         0x0071
+#define HC_SubA_HFPClipTL       0x0072
+#define HC_SubA_HFPClipBL       0x0073
+#define HC_SubA_HFPClipLL       0x0074
+#define HC_SubA_HFPClipRL       0x0075
+#define HC_SubA_HFPClipTBH      0x0076
+#define HC_SubA_HFPClipLRH      0x0077
+#define HC_SubA_HLP             0x0078
+#define HC_SubA_HLPRF           0x0079
+#define HC_SubA_HSolidCL        0x007a
+#define HC_SubA_HPixGC          0x007b
+#define HC_SubA_HSPXYOS         0x007c
+#define HC_SubA_HVertexCNT      0x007d
+
+#define HC_HClipT_MASK          0x00fff000
+#define HC_HClipT_SHIFT         12
+#define HC_HClipB_MASK          0x00000fff
+#define HC_HClipB_SHIFT         0
+#define HC_HClipL_MASK          0x00fff000
+#define HC_HClipL_SHIFT         12
+#define HC_HClipR_MASK          0x00000fff
+#define HC_HClipR_SHIFT         0
+#define HC_HFPClipBH_MASK       0x0000ff00
+#define HC_HFPClipBH_SHIFT      8
+#define HC_HFPClipTH_MASK       0x000000ff
+#define HC_HFPClipTH_SHIFT      0
+#define HC_HFPClipRH_MASK       0x0000ff00
+#define HC_HFPClipRH_SHIFT      8
+#define HC_HFPClipLH_MASK       0x000000ff
+#define HC_HFPClipLH_SHIFT      0
+#define HC_HSolidCH_MASK        0x000000ff
+#define HC_HPixGC_MASK          0x00800000
+#define HC_HSPXOS_MASK          0x00fff000
+#define HC_HSPXOS_SHIFT         12
+#define HC_HSPYOS_MASK          0x00000fff
+
+/* Command
+ * Command A
+ */
+#define HC_HCmdHeader_MASK      0xfe000000      /*0xffe00000 */
+#define HC_HE3Fire_MASK         0x00100000
+#define HC_HPMType_MASK         0x000f0000
+#define HC_HEFlag_MASK          0x0000e000
+#define HC_HShading_MASK        0x00001c00
+#define HC_HPMValidN_MASK       0x00000200
+#define HC_HPLEND_MASK          0x00000100
+#define HC_HVCycle_MASK         0x000000ff
+#define HC_HVCycle_Style_MASK   0x000000c0
+#define HC_HVCycle_ChgA_MASK    0x00000030
+#define HC_HVCycle_ChgB_MASK    0x0000000c
+#define HC_HVCycle_ChgC_MASK    0x00000003
+#define HC_HPMType_Point        0x00000000
+#define HC_HPMType_Line         0x00010000
+#define HC_HPMType_Tri          0x00020000
+#define HC_HPMType_TriWF        0x00040000
+#define HC_HEFlag_NoAA          0x00000000
+#define HC_HEFlag_ab            0x00008000
+#define HC_HEFlag_bc            0x00004000
+#define HC_HEFlag_ca            0x00002000
+#define HC_HShading_Solid       0x00000000
+#define HC_HShading_FlatA       0x00000400
+#define HC_HShading_FlatB       0x00000800
+#define HC_HShading_FlatC       0x00000c00
+#define HC_HShading_Gouraud     0x00001000
+#define HC_HVCycle_Full         0x00000000
+#define HC_HVCycle_AFP          0x00000040
+#define HC_HVCycle_One          0x000000c0
+#define HC_HVCycle_NewA         0x00000000
+#define HC_HVCycle_AA           0x00000010
+#define HC_HVCycle_AB           0x00000020
+#define HC_HVCycle_AC           0x00000030
+#define HC_HVCycle_NewB         0x00000000
+#define HC_HVCycle_BA           0x00000004
+#define HC_HVCycle_BB           0x00000008
+#define HC_HVCycle_BC           0x0000000c
+#define HC_HVCycle_NewC         0x00000000
+#define HC_HVCycle_CA           0x00000001
+#define HC_HVCycle_CB           0x00000002
+#define HC_HVCycle_CC           0x00000003
+
+/* Command B
+ */
+#define HC_HLPrst_MASK          0x00010000
+#define HC_HLLastP_MASK         0x00008000
+#define HC_HVPMSK_MASK          0x00007f80
+#define HC_HBFace_MASK          0x00000040
+#define HC_H2nd1VT_MASK         0x0000003f
+#define HC_HVPMSK_X             0x00004000
+#define HC_HVPMSK_Y             0x00002000
+#define HC_HVPMSK_Z             0x00001000
+#define HC_HVPMSK_W             0x00000800
+#define HC_HVPMSK_Cd            0x00000400
+#define HC_HVPMSK_Cs            0x00000200
+#define HC_HVPMSK_S             0x00000100
+#define HC_HVPMSK_T             0x00000080
+
+/* Enable Setting
+ */
+#define HC_SubA_HEnable         0x0000
+#define HC_HenTXEnvMap_MASK     0x00200000
+#define HC_HenVertexCNT_MASK    0x00100000
+#define HC_HenCPUDAZ_MASK       0x00080000
+#define HC_HenDASZWC_MASK       0x00040000
+#define HC_HenFBCull_MASK       0x00020000
+#define HC_HenCW_MASK           0x00010000
+#define HC_HenAA_MASK           0x00008000
+#define HC_HenST_MASK           0x00004000
+#define HC_HenZT_MASK           0x00002000
+#define HC_HenZW_MASK           0x00001000
+#define HC_HenAT_MASK           0x00000800
+#define HC_HenAW_MASK           0x00000400
+#define HC_HenSP_MASK           0x00000200
+#define HC_HenLP_MASK           0x00000100
+#define HC_HenTXCH_MASK         0x00000080
+#define HC_HenTXMP_MASK         0x00000040
+#define HC_HenTXPP_MASK         0x00000020
+#define HC_HenTXTR_MASK         0x00000010
+#define HC_HenCS_MASK           0x00000008
+#define HC_HenFOG_MASK          0x00000004
+#define HC_HenABL_MASK          0x00000002
+#define HC_HenDT_MASK           0x00000001
+
+/* Z Setting
+ */
+#define HC_SubA_HZWBBasL        0x0010
+#define HC_SubA_HZWBBasH        0x0011
+#define HC_SubA_HZWBType        0x0012
+#define HC_SubA_HZBiasL         0x0013
+#define HC_SubA_HZWBend         0x0014
+#define HC_SubA_HZWTMD          0x0015
+#define HC_SubA_HZWCDL          0x0016
+#define HC_SubA_HZWCTAGnum      0x0017
+#define HC_SubA_HZCYNum         0x0018
+#define HC_SubA_HZWCFire        0x0019
+/* HC_SubA_HZWBType
+ */
+#define HC_HZWBType_MASK        0x00800000
+#define HC_HZBiasedWB_MASK      0x00400000
+#define HC_HZONEasFF_MASK       0x00200000
+#define HC_HZOONEasFF_MASK      0x00100000
+#define HC_HZWBFM_MASK          0x00030000
+#define HC_HZWBLoc_MASK         0x0000c000
+#define HC_HZWBPit_MASK         0x00003fff
+#define HC_HZWBFM_16            0x00000000
+#define HC_HZWBFM_32            0x00020000
+#define HC_HZWBFM_24            0x00030000
+#define HC_HZWBLoc_Local        0x00000000
+#define HC_HZWBLoc_SyS          0x00004000
+/* HC_SubA_HZWBend
+ */
+#define HC_HZWBend_MASK         0x00ffe000
+#define HC_HZBiasH_MASK         0x000000ff
+#define HC_HZWBend_SHIFT        10
+/* HC_SubA_HZWTMD
+ */
+#define HC_HZWTMD_MASK          0x00070000
+#define HC_HEBEBias_MASK        0x00007f00
+#define HC_HZNF_MASK            0x000000ff
+#define HC_HZWTMD_NeverPass     0x00000000
+#define HC_HZWTMD_LT            0x00010000
+#define HC_HZWTMD_EQ            0x00020000
+#define HC_HZWTMD_LE            0x00030000
+#define HC_HZWTMD_GT            0x00040000
+#define HC_HZWTMD_NE            0x00050000
+#define HC_HZWTMD_GE            0x00060000
+#define HC_HZWTMD_AllPass       0x00070000
+#define HC_HEBEBias_SHIFT       8
+/* HC_SubA_HZWCDL          0x0016
+ */
+#define HC_HZWCDL_MASK          0x00ffffff
+/* HC_SubA_HZWCTAGnum      0x0017
+ */
+#define HC_HZWCTAGnum_MASK      0x00ff0000
+#define HC_HZWCTAGnum_SHIFT     16
+#define HC_HZWCDH_MASK          0x000000ff
+#define HC_HZWCDH_SHIFT         0
+/* HC_SubA_HZCYNum         0x0018
+ */
+#define HC_HZCYNum_MASK         0x00030000
+#define HC_HZCYNum_SHIFT        16
+#define HC_HZWCQWnum_MASK       0x00003fff
+#define HC_HZWCQWnum_SHIFT      0
+/* HC_SubA_HZWCFire        0x0019
+ */
+#define HC_ZWCFire_MASK         0x00010000
+#define HC_HZWCQWnumLast_MASK   0x00003fff
+#define HC_HZWCQWnumLast_SHIFT  0
+
+/* Stencil Setting
+ */
+#define HC_SubA_HSTREF          0x0023
+#define HC_SubA_HSTMD           0x0024
+/* HC_SubA_HSBFM
+ */
+#define HC_HSBFM_MASK           0x00030000
+#define HC_HSBLoc_MASK          0x0000c000
+#define HC_HSBPit_MASK          0x00003fff
+/* HC_SubA_HSTREF
+ */
+#define HC_HSTREF_MASK          0x00ff0000
+#define HC_HSTOPMSK_MASK        0x0000ff00
+#define HC_HSTBMSK_MASK         0x000000ff
+#define HC_HSTREF_SHIFT         16
+#define HC_HSTOPMSK_SHIFT       8
+/* HC_SubA_HSTMD
+ */
+#define HC_HSTMD_MASK           0x00070000
+#define HC_HSTOPSF_MASK         0x000001c0
+#define HC_HSTOPSPZF_MASK       0x00000038
+#define HC_HSTOPSPZP_MASK       0x00000007
+#define HC_HSTMD_NeverPass      0x00000000
+#define HC_HSTMD_LT             0x00010000
+#define HC_HSTMD_EQ             0x00020000
+#define HC_HSTMD_LE             0x00030000
+#define HC_HSTMD_GT             0x00040000
+#define HC_HSTMD_NE             0x00050000
+#define HC_HSTMD_GE             0x00060000
+#define HC_HSTMD_AllPass        0x00070000
+#define HC_HSTOPSF_KEEP         0x00000000
+#define HC_HSTOPSF_ZERO         0x00000040
+#define HC_HSTOPSF_REPLACE      0x00000080
+#define HC_HSTOPSF_INCRSAT      0x000000c0
+#define HC_HSTOPSF_DECRSAT      0x00000100
+#define HC_HSTOPSF_INVERT       0x00000140
+#define HC_HSTOPSF_INCR         0x00000180
+#define HC_HSTOPSF_DECR         0x000001c0
+#define HC_HSTOPSPZF_KEEP       0x00000000
+#define HC_HSTOPSPZF_ZERO       0x00000008
+#define HC_HSTOPSPZF_REPLACE    0x00000010
+#define HC_HSTOPSPZF_INCRSAT    0x00000018
+#define HC_HSTOPSPZF_DECRSAT    0x00000020
+#define HC_HSTOPSPZF_INVERT     0x00000028
+#define HC_HSTOPSPZF_INCR       0x00000030
+#define HC_HSTOPSPZF_DECR       0x00000038
+#define HC_HSTOPSPZP_KEEP       0x00000000
+#define HC_HSTOPSPZP_ZERO       0x00000001
+#define HC_HSTOPSPZP_REPLACE    0x00000002
+#define HC_HSTOPSPZP_INCRSAT    0x00000003
+#define HC_HSTOPSPZP_DECRSAT    0x00000004
+#define HC_HSTOPSPZP_INVERT     0x00000005
+#define HC_HSTOPSPZP_INCR       0x00000006
+#define HC_HSTOPSPZP_DECR       0x00000007
+
+/* Alpha Setting
+ */
+#define HC_SubA_HABBasL         0x0030
+#define HC_SubA_HABBasH         0x0031
+#define HC_SubA_HABFM           0x0032
+#define HC_SubA_HATMD           0x0033
+#define HC_SubA_HABLCsat        0x0034
+#define HC_SubA_HABLCop         0x0035
+#define HC_SubA_HABLAsat        0x0036
+#define HC_SubA_HABLAop         0x0037
+#define HC_SubA_HABLRCa         0x0038
+#define HC_SubA_HABLRFCa        0x0039
+#define HC_SubA_HABLRCbias      0x003a
+#define HC_SubA_HABLRCb         0x003b
+#define HC_SubA_HABLRFCb        0x003c
+#define HC_SubA_HABLRAa         0x003d
+#define HC_SubA_HABLRAb         0x003e
+/* HC_SubA_HABFM
+ */
+#define HC_HABFM_MASK           0x00030000
+#define HC_HABLoc_MASK          0x0000c000
+#define HC_HABPit_MASK          0x000007ff
+/* HC_SubA_HATMD
+ */
+#define HC_HATMD_MASK           0x00000700
+#define HC_HATREF_MASK          0x000000ff
+#define HC_HATMD_NeverPass      0x00000000
+#define HC_HATMD_LT             0x00000100
+#define HC_HATMD_EQ             0x00000200
+#define HC_HATMD_LE             0x00000300
+#define HC_HATMD_GT             0x00000400
+#define HC_HATMD_NE             0x00000500
+#define HC_HATMD_GE             0x00000600
+#define HC_HATMD_AllPass        0x00000700
+/* HC_SubA_HABLCsat
+ */
+#define HC_HABLCsat_MASK        0x00010000
+#define HC_HABLCa_MASK          0x0000fc00
+#define HC_HABLCa_C_MASK        0x0000c000
+#define HC_HABLCa_OPC_MASK      0x00003c00
+#define HC_HABLFCa_MASK         0x000003f0
+#define HC_HABLFCa_C_MASK       0x00000300
+#define HC_HABLFCa_OPC_MASK     0x000000f0
+#define HC_HABLCbias_MASK       0x0000000f
+#define HC_HABLCbias_C_MASK     0x00000008
+#define HC_HABLCbias_OPC_MASK   0x00000007
+/*-- Define the input color.
+ */
+#define HC_XC_Csrc              0x00000000
+#define HC_XC_Cdst              0x00000001
+#define HC_XC_Asrc              0x00000002
+#define HC_XC_Adst              0x00000003
+#define HC_XC_Fog               0x00000004
+#define HC_XC_HABLRC            0x00000005
+#define HC_XC_minSrcDst         0x00000006
+#define HC_XC_maxSrcDst         0x00000007
+#define HC_XC_mimAsrcInvAdst    0x00000008
+#define HC_XC_OPC               0x00000000
+#define HC_XC_InvOPC            0x00000010
+#define HC_XC_OPCp5             0x00000020
+/*-- Define the input Alpha
+ */
+#define HC_XA_OPA               0x00000000
+#define HC_XA_InvOPA            0x00000010
+#define HC_XA_OPAp5             0x00000020
+#define HC_XA_0                 0x00000000
+#define HC_XA_Asrc              0x00000001
+#define HC_XA_Adst              0x00000002
+#define HC_XA_Fog               0x00000003
+#define HC_XA_minAsrcFog        0x00000004
+#define HC_XA_minAsrcAdst       0x00000005
+#define HC_XA_maxAsrcFog        0x00000006
+#define HC_XA_maxAsrcAdst       0x00000007
+#define HC_XA_HABLRA            0x00000008
+#define HC_XA_minAsrcInvAdst    0x00000008
+#define HC_XA_HABLFRA           0x00000009
+/*--
+ */
+#define HC_HABLCa_OPC           (HC_XC_OPC << 10)
+#define HC_HABLCa_InvOPC        (HC_XC_InvOPC << 10)
+#define HC_HABLCa_OPCp5         (HC_XC_OPCp5 << 10)
+#define HC_HABLCa_Csrc          (HC_XC_Csrc << 10)
+#define HC_HABLCa_Cdst          (HC_XC_Cdst << 10)
+#define HC_HABLCa_Asrc          (HC_XC_Asrc << 10)
+#define HC_HABLCa_Adst          (HC_XC_Adst << 10)
+#define HC_HABLCa_Fog           (HC_XC_Fog << 10)
+#define HC_HABLCa_HABLRCa       (HC_XC_HABLRC << 10)
+#define HC_HABLCa_minSrcDst     (HC_XC_minSrcDst << 10)
+#define HC_HABLCa_maxSrcDst     (HC_XC_maxSrcDst << 10)
+#define HC_HABLFCa_OPC              (HC_XC_OPC << 4)
+#define HC_HABLFCa_InvOPC           (HC_XC_InvOPC << 4)
+#define HC_HABLFCa_OPCp5            (HC_XC_OPCp5 << 4)
+#define HC_HABLFCa_Csrc             (HC_XC_Csrc << 4)
+#define HC_HABLFCa_Cdst             (HC_XC_Cdst << 4)
+#define HC_HABLFCa_Asrc             (HC_XC_Asrc << 4)
+#define HC_HABLFCa_Adst             (HC_XC_Adst << 4)
+#define HC_HABLFCa_Fog              (HC_XC_Fog << 4)
+#define HC_HABLFCa_HABLRCa          (HC_XC_HABLRC << 4)
+#define HC_HABLFCa_minSrcDst        (HC_XC_minSrcDst << 4)
+#define HC_HABLFCa_maxSrcDst        (HC_XC_maxSrcDst << 4)
+#define HC_HABLFCa_mimAsrcInvAdst   (HC_XC_mimAsrcInvAdst << 4)
+#define HC_HABLCbias_HABLRCbias 0x00000000
+#define HC_HABLCbias_Asrc       0x00000001
+#define HC_HABLCbias_Adst       0x00000002
+#define HC_HABLCbias_Fog        0x00000003
+#define HC_HABLCbias_Cin        0x00000004
+/* HC_SubA_HABLCop         0x0035
+ */
+#define HC_HABLdot_MASK         0x00010000
+#define HC_HABLCop_MASK         0x00004000
+#define HC_HABLCb_MASK          0x00003f00
+#define HC_HABLCb_C_MASK        0x00003000
+#define HC_HABLCb_OPC_MASK      0x00000f00
+#define HC_HABLFCb_MASK         0x000000fc
+#define HC_HABLFCb_C_MASK       0x000000c0
+#define HC_HABLFCb_OPC_MASK     0x0000003c
+#define HC_HABLCshift_MASK      0x00000003
+#define HC_HABLCb_OPC           (HC_XC_OPC << 8)
+#define HC_HABLCb_InvOPC        (HC_XC_InvOPC << 8)
+#define HC_HABLCb_OPCp5         (HC_XC_OPCp5 << 8)
+#define HC_HABLCb_Csrc          (HC_XC_Csrc << 8)
+#define HC_HABLCb_Cdst          (HC_XC_Cdst << 8)
+#define HC_HABLCb_Asrc          (HC_XC_Asrc << 8)
+#define HC_HABLCb_Adst          (HC_XC_Adst << 8)
+#define HC_HABLCb_Fog           (HC_XC_Fog << 8)
+#define HC_HABLCb_HABLRCa       (HC_XC_HABLRC << 8)
+#define HC_HABLCb_minSrcDst     (HC_XC_minSrcDst << 8)
+#define HC_HABLCb_maxSrcDst     (HC_XC_maxSrcDst << 8)
+#define HC_HABLFCb_OPC              (HC_XC_OPC << 2)
+#define HC_HABLFCb_InvOPC           (HC_XC_InvOPC << 2)
+#define HC_HABLFCb_OPCp5            (HC_XC_OPCp5 << 2)
+#define HC_HABLFCb_Csrc             (HC_XC_Csrc << 2)
+#define HC_HABLFCb_Cdst             (HC_XC_Cdst << 2)
+#define HC_HABLFCb_Asrc             (HC_XC_Asrc << 2)
+#define HC_HABLFCb_Adst             (HC_XC_Adst << 2)
+#define HC_HABLFCb_Fog              (HC_XC_Fog << 2)
+#define HC_HABLFCb_HABLRCb          (HC_XC_HABLRC << 2)
+#define HC_HABLFCb_minSrcDst        (HC_XC_minSrcDst << 2)
+#define HC_HABLFCb_maxSrcDst        (HC_XC_maxSrcDst << 2)
+#define HC_HABLFCb_mimAsrcInvAdst   (HC_XC_mimAsrcInvAdst << 2)
+/* HC_SubA_HABLAsat        0x0036
+ */
+#define HC_HABLAsat_MASK        0x00010000
+#define HC_HABLAa_MASK          0x0000fc00
+#define HC_HABLAa_A_MASK        0x0000c000
+#define HC_HABLAa_OPA_MASK      0x00003c00
+#define HC_HABLFAa_MASK         0x000003f0
+#define HC_HABLFAa_A_MASK       0x00000300
+#define HC_HABLFAa_OPA_MASK     0x000000f0
+#define HC_HABLAbias_MASK       0x0000000f
+#define HC_HABLAbias_A_MASK     0x00000008
+#define HC_HABLAbias_OPA_MASK   0x00000007
+#define HC_HABLAa_OPA           (HC_XA_OPA << 10)
+#define HC_HABLAa_InvOPA        (HC_XA_InvOPA << 10)
+#define HC_HABLAa_OPAp5         (HC_XA_OPAp5 << 10)
+#define HC_HABLAa_0             (HC_XA_0 << 10)
+#define HC_HABLAa_Asrc          (HC_XA_Asrc << 10)
+#define HC_HABLAa_Adst          (HC_XA_Adst << 10)
+#define HC_HABLAa_Fog           (HC_XA_Fog << 10)
+#define HC_HABLAa_minAsrcFog    (HC_XA_minAsrcFog << 10)
+#define HC_HABLAa_minAsrcAdst   (HC_XA_minAsrcAdst << 10)
+#define HC_HABLAa_maxAsrcFog    (HC_XA_maxAsrcFog << 10)
+#define HC_HABLAa_maxAsrcAdst   (HC_XA_maxAsrcAdst << 10)
+#define HC_HABLAa_HABLRA        (HC_XA_HABLRA << 10)
+#define HC_HABLFAa_OPA          (HC_XA_OPA << 4)
+#define HC_HABLFAa_InvOPA       (HC_XA_InvOPA << 4)
+#define HC_HABLFAa_OPAp5        (HC_XA_OPAp5 << 4)
+#define HC_HABLFAa_0            (HC_XA_0 << 4)
+#define HC_HABLFAa_Asrc         (HC_XA_Asrc << 4)
+#define HC_HABLFAa_Adst         (HC_XA_Adst << 4)
+#define HC_HABLFAa_Fog          (HC_XA_Fog << 4)
+#define HC_HABLFAa_minAsrcFog   (HC_XA_minAsrcFog << 4)
+#define HC_HABLFAa_minAsrcAdst  (HC_XA_minAsrcAdst << 4)
+#define HC_HABLFAa_maxAsrcFog   (HC_XA_maxAsrcFog << 4)
+#define HC_HABLFAa_maxAsrcAdst  (HC_XA_maxAsrcAdst << 4)
+#define HC_HABLFAa_minAsrcInvAdst   (HC_XA_minAsrcInvAdst << 4)
+#define HC_HABLFAa_HABLFRA          (HC_XA_HABLFRA << 4)
+#define HC_HABLAbias_HABLRAbias 0x00000000
+#define HC_HABLAbias_Asrc       0x00000001
+#define HC_HABLAbias_Adst       0x00000002
+#define HC_HABLAbias_Fog        0x00000003
+#define HC_HABLAbias_Aaa        0x00000004
+/* HC_SubA_HABLAop         0x0037
+ */
+#define HC_HABLAop_MASK         0x00004000
+#define HC_HABLAb_MASK          0x00003f00
+#define HC_HABLAb_OPA_MASK      0x00000f00
+#define HC_HABLFAb_MASK         0x000000fc
+#define HC_HABLFAb_OPA_MASK     0x0000003c
+#define HC_HABLAshift_MASK      0x00000003
+#define HC_HABLAb_OPA           (HC_XA_OPA << 8)
+#define HC_HABLAb_InvOPA        (HC_XA_InvOPA << 8)
+#define HC_HABLAb_OPAp5         (HC_XA_OPAp5 << 8)
+#define HC_HABLAb_0             (HC_XA_0 << 8)
+#define HC_HABLAb_Asrc          (HC_XA_Asrc << 8)
+#define HC_HABLAb_Adst          (HC_XA_Adst << 8)
+#define HC_HABLAb_Fog           (HC_XA_Fog << 8)
+#define HC_HABLAb_minAsrcFog    (HC_XA_minAsrcFog << 8)
+#define HC_HABLAb_minAsrcAdst   (HC_XA_minAsrcAdst << 8)
+#define HC_HABLAb_maxAsrcFog    (HC_XA_maxAsrcFog << 8)
+#define HC_HABLAb_maxAsrcAdst   (HC_XA_maxAsrcAdst << 8)
+#define HC_HABLAb_HABLRA        (HC_XA_HABLRA << 8)
+#define HC_HABLFAb_OPA          (HC_XA_OPA << 2)
+#define HC_HABLFAb_InvOPA       (HC_XA_InvOPA << 2)
+#define HC_HABLFAb_OPAp5        (HC_XA_OPAp5 << 2)
+#define HC_HABLFAb_0            (HC_XA_0 << 2)
+#define HC_HABLFAb_Asrc         (HC_XA_Asrc << 2)
+#define HC_HABLFAb_Adst         (HC_XA_Adst << 2)
+#define HC_HABLFAb_Fog          (HC_XA_Fog << 2)
+#define HC_HABLFAb_minAsrcFog   (HC_XA_minAsrcFog << 2)
+#define HC_HABLFAb_minAsrcAdst  (HC_XA_minAsrcAdst << 2)
+#define HC_HABLFAb_maxAsrcFog   (HC_XA_maxAsrcFog << 2)
+#define HC_HABLFAb_maxAsrcAdst  (HC_XA_maxAsrcAdst << 2)
+#define HC_HABLFAb_minAsrcInvAdst   (HC_XA_minAsrcInvAdst << 2)
+#define HC_HABLFAb_HABLFRA          (HC_XA_HABLFRA << 2)
+/* HC_SubA_HABLRAa         0x003d
+ */
+#define HC_HABLRAa_MASK         0x00ff0000
+#define HC_HABLRFAa_MASK        0x0000ff00
+#define HC_HABLRAbias_MASK      0x000000ff
+#define HC_HABLRAa_SHIFT        16
+#define HC_HABLRFAa_SHIFT       8
+/* HC_SubA_HABLRAb         0x003e
+ */
+#define HC_HABLRAb_MASK         0x0000ff00
+#define HC_HABLRFAb_MASK        0x000000ff
+#define HC_HABLRAb_SHIFT        8
+
+/* Destination Setting
+ */
+#define HC_SubA_HDBBasL         0x0040
+#define HC_SubA_HDBBasH         0x0041
+#define HC_SubA_HDBFM           0x0042
+#define HC_SubA_HFBBMSKL        0x0043
+#define HC_SubA_HROP            0x0044
+/* HC_SubA_HDBFM           0x0042
+ */
+#define HC_HDBFM_MASK           0x001f0000
+#define HC_HDBLoc_MASK          0x0000c000
+#define HC_HDBPit_MASK          0x00003fff
+#define HC_HDBFM_RGB555         0x00000000
+#define HC_HDBFM_RGB565         0x00010000
+#define HC_HDBFM_ARGB4444       0x00020000
+#define HC_HDBFM_ARGB1555       0x00030000
+#define HC_HDBFM_BGR555         0x00040000
+#define HC_HDBFM_BGR565         0x00050000
+#define HC_HDBFM_ABGR4444       0x00060000
+#define HC_HDBFM_ABGR1555       0x00070000
+#define HC_HDBFM_ARGB0888       0x00080000
+#define HC_HDBFM_ARGB8888       0x00090000
+#define HC_HDBFM_ABGR0888       0x000a0000
+#define HC_HDBFM_ABGR8888       0x000b0000
+#define HC_HDBLoc_Local         0x00000000
+#define HC_HDBLoc_Sys           0x00004000
+/* HC_SubA_HROP            0x0044
+ */
+#define HC_HROP_MASK            0x00000f00
+#define HC_HFBBMSKH_MASK        0x000000ff
+#define HC_HROP_BLACK           0x00000000
+#define HC_HROP_DPon            0x00000100
+#define HC_HROP_DPna            0x00000200
+#define HC_HROP_Pn              0x00000300
+#define HC_HROP_PDna            0x00000400
+#define HC_HROP_Dn              0x00000500
+#define HC_HROP_DPx             0x00000600
+#define HC_HROP_DPan            0x00000700
+#define HC_HROP_DPa             0x00000800
+#define HC_HROP_DPxn            0x00000900
+#define HC_HROP_D               0x00000a00
+#define HC_HROP_DPno            0x00000b00
+#define HC_HROP_P               0x00000c00
+#define HC_HROP_PDno            0x00000d00
+#define HC_HROP_DPo             0x00000e00
+#define HC_HROP_WHITE           0x00000f00
+
+/* Fog Setting
+ */
+#define HC_SubA_HFogLF          0x0050
+#define HC_SubA_HFogCL          0x0051
+#define HC_SubA_HFogCH          0x0052
+#define HC_SubA_HFogStL         0x0053
+#define HC_SubA_HFogStH         0x0054
+#define HC_SubA_HFogOOdMF       0x0055
+#define HC_SubA_HFogOOdEF       0x0056
+#define HC_SubA_HFogEndL        0x0057
+#define HC_SubA_HFogDenst       0x0058
+/* HC_SubA_FogLF           0x0050
+ */
+#define HC_FogLF_MASK           0x00000010
+#define HC_FogEq_MASK           0x00000008
+#define HC_FogMD_MASK           0x00000007
+#define HC_FogMD_LocalFog        0x00000000
+#define HC_FogMD_LinearFog       0x00000002
+#define HC_FogMD_ExponentialFog  0x00000004
+#define HC_FogMD_Exponential2Fog 0x00000005
+/* #define HC_FogMD_FogTable       0x00000003 */
+
+/* HC_SubA_HFogDenst        0x0058
+ */
+#define HC_FogDenst_MASK        0x001fff00
+#define HC_FogEndL_MASK         0x000000ff
+
+/* Texture subtype definitions
+ */
+#define HC_SubType_Tex0         0x00000000
+#define HC_SubType_Tex1         0x00000001
+#define HC_SubType_TexGeneral   0x000000fe
+
+/* Attribute of texture n
+ */
+#define HC_SubA_HTXnL0BasL      0x0000
+#define HC_SubA_HTXnL1BasL      0x0001
+#define HC_SubA_HTXnL2BasL      0x0002
+#define HC_SubA_HTXnL3BasL      0x0003
+#define HC_SubA_HTXnL4BasL      0x0004
+#define HC_SubA_HTXnL5BasL      0x0005
+#define HC_SubA_HTXnL6BasL      0x0006
+#define HC_SubA_HTXnL7BasL      0x0007
+#define HC_SubA_HTXnL8BasL      0x0008
+#define HC_SubA_HTXnL9BasL      0x0009
+#define HC_SubA_HTXnLaBasL      0x000a
+#define HC_SubA_HTXnLbBasL      0x000b
+#define HC_SubA_HTXnLcBasL      0x000c
+#define HC_SubA_HTXnLdBasL      0x000d
+#define HC_SubA_HTXnLeBasL      0x000e
+#define HC_SubA_HTXnLfBasL      0x000f
+#define HC_SubA_HTXnL10BasL     0x0010
+#define HC_SubA_HTXnL11BasL     0x0011
+#define HC_SubA_HTXnL012BasH    0x0020
+#define HC_SubA_HTXnL345BasH    0x0021
+#define HC_SubA_HTXnL678BasH    0x0022
+#define HC_SubA_HTXnL9abBasH    0x0023
+#define HC_SubA_HTXnLcdeBasH    0x0024
+#define HC_SubA_HTXnLf1011BasH  0x0025
+#define HC_SubA_HTXnL0Pit       0x002b
+#define HC_SubA_HTXnL1Pit       0x002c
+#define HC_SubA_HTXnL2Pit       0x002d
+#define HC_SubA_HTXnL3Pit       0x002e
+#define HC_SubA_HTXnL4Pit       0x002f
+#define HC_SubA_HTXnL5Pit       0x0030
+#define HC_SubA_HTXnL6Pit       0x0031
+#define HC_SubA_HTXnL7Pit       0x0032
+#define HC_SubA_HTXnL8Pit       0x0033
+#define HC_SubA_HTXnL9Pit       0x0034
+#define HC_SubA_HTXnLaPit       0x0035
+#define HC_SubA_HTXnLbPit       0x0036
+#define HC_SubA_HTXnLcPit       0x0037
+#define HC_SubA_HTXnLdPit       0x0038
+#define HC_SubA_HTXnLePit       0x0039
+#define HC_SubA_HTXnLfPit       0x003a
+#define HC_SubA_HTXnL10Pit      0x003b
+#define HC_SubA_HTXnL11Pit      0x003c
+#define HC_SubA_HTXnL0_5WE      0x004b
+#define HC_SubA_HTXnL6_bWE      0x004c
+#define HC_SubA_HTXnLc_11WE     0x004d
+#define HC_SubA_HTXnL0_5HE      0x0051
+#define HC_SubA_HTXnL6_bHE      0x0052
+#define HC_SubA_HTXnLc_11HE     0x0053
+#define HC_SubA_HTXnL0OS        0x0077
+#define HC_SubA_HTXnTB          0x0078
+#define HC_SubA_HTXnMPMD        0x0079
+#define HC_SubA_HTXnCLODu       0x007a
+#define HC_SubA_HTXnFM          0x007b
+#define HC_SubA_HTXnTRCH        0x007c
+#define HC_SubA_HTXnTRCL        0x007d
+#define HC_SubA_HTXnTBC         0x007e
+#define HC_SubA_HTXnTRAH        0x007f
+#define HC_SubA_HTXnTBLCsat     0x0080
+#define HC_SubA_HTXnTBLCop      0x0081
+#define HC_SubA_HTXnTBLMPfog    0x0082
+#define HC_SubA_HTXnTBLAsat     0x0083
+#define HC_SubA_HTXnTBLRCa      0x0085
+#define HC_SubA_HTXnTBLRCb      0x0086
+#define HC_SubA_HTXnTBLRCc      0x0087
+#define HC_SubA_HTXnTBLRCbias   0x0088
+#define HC_SubA_HTXnTBLRAa      0x0089
+#define HC_SubA_HTXnTBLRFog     0x008a
+#define HC_SubA_HTXnBumpM00     0x0090
+#define HC_SubA_HTXnBumpM01     0x0091
+#define HC_SubA_HTXnBumpM10     0x0092
+#define HC_SubA_HTXnBumpM11     0x0093
+#define HC_SubA_HTXnLScale      0x0094
+#define HC_SubA_HTXSMD          0x0000
+/* HC_SubA_HTXnL012BasH    0x0020
+ */
+#define HC_HTXnL0BasH_MASK      0x000000ff
+#define HC_HTXnL1BasH_MASK      0x0000ff00
+#define HC_HTXnL2BasH_MASK      0x00ff0000
+#define HC_HTXnL1BasH_SHIFT     8
+#define HC_HTXnL2BasH_SHIFT     16
+/* HC_SubA_HTXnL345BasH    0x0021
+ */
+#define HC_HTXnL3BasH_MASK      0x000000ff
+#define HC_HTXnL4BasH_MASK      0x0000ff00
+#define HC_HTXnL5BasH_MASK      0x00ff0000
+#define HC_HTXnL4BasH_SHIFT     8
+#define HC_HTXnL5BasH_SHIFT     16
+/* HC_SubA_HTXnL678BasH    0x0022
+ */
+#define HC_HTXnL6BasH_MASK      0x000000ff
+#define HC_HTXnL7BasH_MASK      0x0000ff00
+#define HC_HTXnL8BasH_MASK      0x00ff0000
+#define HC_HTXnL7BasH_SHIFT     8
+#define HC_HTXnL8BasH_SHIFT     16
+/* HC_SubA_HTXnL9abBasH    0x0023
+ */
+#define HC_HTXnL9BasH_MASK      0x000000ff
+#define HC_HTXnLaBasH_MASK      0x0000ff00
+#define HC_HTXnLbBasH_MASK      0x00ff0000
+#define HC_HTXnLaBasH_SHIFT     8
+#define HC_HTXnLbBasH_SHIFT     16
+/* HC_SubA_HTXnLcdeBasH    0x0024
+ */
+#define HC_HTXnLcBasH_MASK      0x000000ff
+#define HC_HTXnLdBasH_MASK      0x0000ff00
+#define HC_HTXnLeBasH_MASK      0x00ff0000
+#define HC_HTXnLdBasH_SHIFT     8
+#define HC_HTXnLeBasH_SHIFT     16
+/* HC_SubA_HTXnLcdeBasH    0x0025
+ */
+#define HC_HTXnLfBasH_MASK      0x000000ff
+#define HC_HTXnL10BasH_MASK      0x0000ff00
+#define HC_HTXnL11BasH_MASK      0x00ff0000
+#define HC_HTXnL10BasH_SHIFT     8
+#define HC_HTXnL11BasH_SHIFT     16
+/* HC_SubA_HTXnL0Pit       0x002b
+ */
+#define HC_HTXnLnPit_MASK       0x00003fff
+#define HC_HTXnEnPit_MASK       0x00080000
+#define HC_HTXnLnPitE_MASK      0x00f00000
+#define HC_HTXnLnPitE_SHIFT     20
+/* HC_SubA_HTXnL0_5WE      0x004b
+ */
+#define HC_HTXnL0WE_MASK        0x0000000f
+#define HC_HTXnL1WE_MASK        0x000000f0
+#define HC_HTXnL2WE_MASK        0x00000f00
+#define HC_HTXnL3WE_MASK        0x0000f000
+#define HC_HTXnL4WE_MASK        0x000f0000
+#define HC_HTXnL5WE_MASK        0x00f00000
+#define HC_HTXnL1WE_SHIFT       4
+#define HC_HTXnL2WE_SHIFT       8
+#define HC_HTXnL3WE_SHIFT       12
+#define HC_HTXnL4WE_SHIFT       16
+#define HC_HTXnL5WE_SHIFT       20
+/* HC_SubA_HTXnL6_bWE      0x004c
+ */
+#define HC_HTXnL6WE_MASK        0x0000000f
+#define HC_HTXnL7WE_MASK        0x000000f0
+#define HC_HTXnL8WE_MASK        0x00000f00
+#define HC_HTXnL9WE_MASK        0x0000f000
+#define HC_HTXnLaWE_MASK        0x000f0000
+#define HC_HTXnLbWE_MASK        0x00f00000
+#define HC_HTXnL7WE_SHIFT       4
+#define HC_HTXnL8WE_SHIFT       8
+#define HC_HTXnL9WE_SHIFT       12
+#define HC_HTXnLaWE_SHIFT       16
+#define HC_HTXnLbWE_SHIFT       20
+/* HC_SubA_HTXnLc_11WE      0x004d
+ */
+#define HC_HTXnLcWE_MASK        0x0000000f
+#define HC_HTXnLdWE_MASK        0x000000f0
+#define HC_HTXnLeWE_MASK        0x00000f00
+#define HC_HTXnLfWE_MASK        0x0000f000
+#define HC_HTXnL10WE_MASK       0x000f0000
+#define HC_HTXnL11WE_MASK       0x00f00000
+#define HC_HTXnLdWE_SHIFT       4
+#define HC_HTXnLeWE_SHIFT       8
+#define HC_HTXnLfWE_SHIFT       12
+#define HC_HTXnL10WE_SHIFT      16
+#define HC_HTXnL11WE_SHIFT      20
+/* HC_SubA_HTXnL0_5HE      0x0051
+ */
+#define HC_HTXnL0HE_MASK        0x0000000f
+#define HC_HTXnL1HE_MASK        0x000000f0
+#define HC_HTXnL2HE_MASK        0x00000f00
+#define HC_HTXnL3HE_MASK        0x0000f000
+#define HC_HTXnL4HE_MASK        0x000f0000
+#define HC_HTXnL5HE_MASK        0x00f00000
+#define HC_HTXnL1HE_SHIFT       4
+#define HC_HTXnL2HE_SHIFT       8
+#define HC_HTXnL3HE_SHIFT       12
+#define HC_HTXnL4HE_SHIFT       16
+#define HC_HTXnL5HE_SHIFT       20
+/* HC_SubA_HTXnL6_bHE      0x0052
+ */
+#define HC_HTXnL6HE_MASK        0x0000000f
+#define HC_HTXnL7HE_MASK        0x000000f0
+#define HC_HTXnL8HE_MASK        0x00000f00
+#define HC_HTXnL9HE_MASK        0x0000f000
+#define HC_HTXnLaHE_MASK        0x000f0000
+#define HC_HTXnLbHE_MASK        0x00f00000
+#define HC_HTXnL7HE_SHIFT       4
+#define HC_HTXnL8HE_SHIFT       8
+#define HC_HTXnL9HE_SHIFT       12
+#define HC_HTXnLaHE_SHIFT       16
+#define HC_HTXnLbHE_SHIFT       20
+/* HC_SubA_HTXnLc_11HE      0x0053
+ */
+#define HC_HTXnLcHE_MASK        0x0000000f
+#define HC_HTXnLdHE_MASK        0x000000f0
+#define HC_HTXnLeHE_MASK        0x00000f00
+#define HC_HTXnLfHE_MASK        0x0000f000
+#define HC_HTXnL10HE_MASK       0x000f0000
+#define HC_HTXnL11HE_MASK       0x00f00000
+#define HC_HTXnLdHE_SHIFT       4
+#define HC_HTXnLeHE_SHIFT       8
+#define HC_HTXnLfHE_SHIFT       12
+#define HC_HTXnL10HE_SHIFT      16
+#define HC_HTXnL11HE_SHIFT      20
+/* HC_SubA_HTXnL0OS        0x0077
+ */
+#define HC_HTXnL0OS_MASK        0x003ff000
+#define HC_HTXnLVmax_MASK       0x00000fc0
+#define HC_HTXnLVmin_MASK       0x0000003f
+#define HC_HTXnL0OS_SHIFT       12
+#define HC_HTXnLVmax_SHIFT      6
+/* HC_SubA_HTXnTB          0x0078
+ */
+#define HC_HTXnTB_MASK          0x00f00000
+#define HC_HTXnFLSe_MASK        0x0000e000
+#define HC_HTXnFLSs_MASK        0x00001c00
+#define HC_HTXnFLTe_MASK        0x00000380
+#define HC_HTXnFLTs_MASK        0x00000070
+#define HC_HTXnFLDs_MASK        0x0000000f
+#define HC_HTXnTB_NoTB          0x00000000
+#define HC_HTXnTB_TBC_S         0x00100000
+#define HC_HTXnTB_TBC_T         0x00200000
+#define HC_HTXnTB_TB_S          0x00400000
+#define HC_HTXnTB_TB_T          0x00800000
+#define HC_HTXnFLSe_Nearest     0x00000000
+#define HC_HTXnFLSe_Linear      0x00002000
+#define HC_HTXnFLSe_NonLinear   0x00004000
+#define HC_HTXnFLSe_Sharp       0x00008000
+#define HC_HTXnFLSe_Flat_Gaussian_Cubic 0x0000c000
+#define HC_HTXnFLSs_Nearest     0x00000000
+#define HC_HTXnFLSs_Linear      0x00000400
+#define HC_HTXnFLSs_NonLinear   0x00000800
+#define HC_HTXnFLSs_Flat_Gaussian_Cubic 0x00001800
+#define HC_HTXnFLTe_Nearest     0x00000000
+#define HC_HTXnFLTe_Linear      0x00000080
+#define HC_HTXnFLTe_NonLinear   0x00000100
+#define HC_HTXnFLTe_Sharp       0x00000180
+#define HC_HTXnFLTe_Flat_Gaussian_Cubic 0x00000300
+#define HC_HTXnFLTs_Nearest     0x00000000
+#define HC_HTXnFLTs_Linear      0x00000010
+#define HC_HTXnFLTs_NonLinear   0x00000020
+#define HC_HTXnFLTs_Flat_Gaussian_Cubic 0x00000060
+#define HC_HTXnFLDs_Tex0        0x00000000
+#define HC_HTXnFLDs_Nearest     0x00000001
+#define HC_HTXnFLDs_Linear      0x00000002
+#define HC_HTXnFLDs_NonLinear   0x00000003
+#define HC_HTXnFLDs_Dither      0x00000004
+#define HC_HTXnFLDs_ConstLOD    0x00000005
+#define HC_HTXnFLDs_Ani         0x00000006
+#define HC_HTXnFLDs_AniDither   0x00000007
+/* HC_SubA_HTXnMPMD        0x0079
+ */
+#define HC_HTXnMPMD_SMASK       0x00070000
+#define HC_HTXnMPMD_TMASK       0x00380000
+#define HC_HTXnLODDTf_MASK      0x00000007
+#define HC_HTXnXY2ST_MASK       0x00000008
+#define HC_HTXnMPMD_Tsingle     0x00000000
+#define HC_HTXnMPMD_Tclamp      0x00080000
+#define HC_HTXnMPMD_Trepeat     0x00100000
+#define HC_HTXnMPMD_Tmirror     0x00180000
+#define HC_HTXnMPMD_Twrap       0x00200000
+#define HC_HTXnMPMD_Ssingle     0x00000000
+#define HC_HTXnMPMD_Sclamp      0x00010000
+#define HC_HTXnMPMD_Srepeat     0x00020000
+#define HC_HTXnMPMD_Smirror     0x00030000
+#define HC_HTXnMPMD_Swrap       0x00040000
+/* HC_SubA_HTXnCLODu       0x007a
+ */
+#define HC_HTXnCLODu_MASK       0x000ffc00
+#define HC_HTXnCLODd_MASK       0x000003ff
+#define HC_HTXnCLODu_SHIFT      10
+/* HC_SubA_HTXnFM          0x007b
+ */
+#define HC_HTXnFM_MASK          0x00ff0000
+#define HC_HTXnLoc_MASK         0x00000003
+#define HC_HTXnFM_INDEX         0x00000000
+#define HC_HTXnFM_Intensity     0x00080000
+#define HC_HTXnFM_Lum           0x00100000
+#define HC_HTXnFM_Alpha         0x00180000
+#define HC_HTXnFM_DX            0x00280000
+#define HC_HTXnFM_ARGB16        0x00880000
+#define HC_HTXnFM_ARGB32        0x00980000
+#define HC_HTXnFM_ABGR16        0x00a80000
+#define HC_HTXnFM_ABGR32        0x00b80000
+#define HC_HTXnFM_RGBA16        0x00c80000
+#define HC_HTXnFM_RGBA32        0x00d80000
+#define HC_HTXnFM_BGRA16        0x00e80000
+#define HC_HTXnFM_BGRA32        0x00f80000
+#define HC_HTXnFM_BUMPMAP       0x00380000
+#define HC_HTXnFM_Index1        (HC_HTXnFM_INDEX     | 0x00000000)
+#define HC_HTXnFM_Index2        (HC_HTXnFM_INDEX     | 0x00010000)
+#define HC_HTXnFM_Index4        (HC_HTXnFM_INDEX     | 0x00020000)
+#define HC_HTXnFM_Index8        (HC_HTXnFM_INDEX     | 0x00030000)
+#define HC_HTXnFM_T1            (HC_HTXnFM_Intensity | 0x00000000)
+#define HC_HTXnFM_T2            (HC_HTXnFM_Intensity | 0x00010000)
+#define HC_HTXnFM_T4            (HC_HTXnFM_Intensity | 0x00020000)
+#define HC_HTXnFM_T8            (HC_HTXnFM_Intensity | 0x00030000)
+#define HC_HTXnFM_L1            (HC_HTXnFM_Lum       | 0x00000000)
+#define HC_HTXnFM_L2            (HC_HTXnFM_Lum       | 0x00010000)
+#define HC_HTXnFM_L4            (HC_HTXnFM_Lum       | 0x00020000)
+#define HC_HTXnFM_L8            (HC_HTXnFM_Lum       | 0x00030000)
+#define HC_HTXnFM_AL44          (HC_HTXnFM_Lum       | 0x00040000)
+#define HC_HTXnFM_AL88          (HC_HTXnFM_Lum       | 0x00050000)
+#define HC_HTXnFM_A1            (HC_HTXnFM_Alpha     | 0x00000000)
+#define HC_HTXnFM_A2            (HC_HTXnFM_Alpha     | 0x00010000)
+#define HC_HTXnFM_A4            (HC_HTXnFM_Alpha     | 0x00020000)
+#define HC_HTXnFM_A8            (HC_HTXnFM_Alpha     | 0x00030000)
+#define HC_HTXnFM_DX1           (HC_HTXnFM_DX        | 0x00010000)
+#define HC_HTXnFM_DX23          (HC_HTXnFM_DX        | 0x00020000)
+#define HC_HTXnFM_DX45          (HC_HTXnFM_DX        | 0x00030000)
+#define HC_HTXnFM_RGB555        (HC_HTXnFM_ARGB16    | 0x00000000)
+#define HC_HTXnFM_RGB565        (HC_HTXnFM_ARGB16    | 0x00010000)
+#define HC_HTXnFM_ARGB1555      (HC_HTXnFM_ARGB16    | 0x00020000)
+#define HC_HTXnFM_ARGB4444      (HC_HTXnFM_ARGB16    | 0x00030000)
+#define HC_HTXnFM_ARGB0888      (HC_HTXnFM_ARGB32    | 0x00000000)
+#define HC_HTXnFM_ARGB8888      (HC_HTXnFM_ARGB32    | 0x00010000)
+#define HC_HTXnFM_BGR555        (HC_HTXnFM_ABGR16    | 0x00000000)
+#define HC_HTXnFM_BGR565        (HC_HTXnFM_ABGR16    | 0x00010000)
+#define HC_HTXnFM_ABGR1555      (HC_HTXnFM_ABGR16    | 0x00020000)
+#define HC_HTXnFM_ABGR4444      (HC_HTXnFM_ABGR16    | 0x00030000)
+#define HC_HTXnFM_ABGR0888      (HC_HTXnFM_ABGR32    | 0x00000000)
+#define HC_HTXnFM_ABGR8888      (HC_HTXnFM_ABGR32    | 0x00010000)
+#define HC_HTXnFM_RGBA5550      (HC_HTXnFM_RGBA16    | 0x00000000)
+#define HC_HTXnFM_RGBA5551      (HC_HTXnFM_RGBA16    | 0x00020000)
+#define HC_HTXnFM_RGBA4444      (HC_HTXnFM_RGBA16    | 0x00030000)
+#define HC_HTXnFM_RGBA8880      (HC_HTXnFM_RGBA32    | 0x00000000)
+#define HC_HTXnFM_RGBA8888      (HC_HTXnFM_RGBA32    | 0x00010000)
+#define HC_HTXnFM_BGRA5550      (HC_HTXnFM_BGRA16    | 0x00000000)
+#define HC_HTXnFM_BGRA5551      (HC_HTXnFM_BGRA16    | 0x00020000)
+#define HC_HTXnFM_BGRA4444      (HC_HTXnFM_BGRA16    | 0x00030000)
+#define HC_HTXnFM_BGRA8880      (HC_HTXnFM_BGRA32    | 0x00000000)
+#define HC_HTXnFM_BGRA8888      (HC_HTXnFM_BGRA32    | 0x00010000)
+#define HC_HTXnFM_VU88          (HC_HTXnFM_BUMPMAP   | 0x00000000)
+#define HC_HTXnFM_LVU655        (HC_HTXnFM_BUMPMAP   | 0x00010000)
+#define HC_HTXnFM_LVU888        (HC_HTXnFM_BUMPMAP   | 0x00020000)
+#define HC_HTXnLoc_Local        0x00000000
+#define HC_HTXnLoc_Sys          0x00000002
+#define HC_HTXnLoc_AGP          0x00000003
+/* HC_SubA_HTXnTRAH        0x007f
+ */
+#define HC_HTXnTRAH_MASK        0x00ff0000
+#define HC_HTXnTRAL_MASK        0x0000ff00
+#define HC_HTXnTBA_MASK         0x000000ff
+#define HC_HTXnTRAH_SHIFT       16
+#define HC_HTXnTRAL_SHIFT       8
+/* HC_SubA_HTXnTBLCsat     0x0080
+ *-- Define the input texture.
+ */
+#define HC_XTC_TOPC             0x00000000
+#define HC_XTC_InvTOPC          0x00000010
+#define HC_XTC_TOPCp5           0x00000020
+#define HC_XTC_Cbias            0x00000000
+#define HC_XTC_InvCbias         0x00000010
+#define HC_XTC_0                0x00000000
+#define HC_XTC_Dif              0x00000001
+#define HC_XTC_Spec             0x00000002
+#define HC_XTC_Tex              0x00000003
+#define HC_XTC_Cur              0x00000004
+#define HC_XTC_Adif             0x00000005
+#define HC_XTC_Fog              0x00000006
+#define HC_XTC_Atex             0x00000007
+#define HC_XTC_Acur             0x00000008
+#define HC_XTC_HTXnTBLRC        0x00000009
+#define HC_XTC_Ctexnext         0x0000000a
+/*--
+ */
+#define HC_HTXnTBLCsat_MASK     0x00800000
+#define HC_HTXnTBLCa_MASK       0x000fc000
+#define HC_HTXnTBLCb_MASK       0x00001f80
+#define HC_HTXnTBLCc_MASK       0x0000003f
+#define HC_HTXnTBLCa_TOPC       (HC_XTC_TOPC << 14)
+#define HC_HTXnTBLCa_InvTOPC    (HC_XTC_InvTOPC << 14)
+#define HC_HTXnTBLCa_TOPCp5     (HC_XTC_TOPCp5 << 14)
+#define HC_HTXnTBLCa_0          (HC_XTC_0 << 14)
+#define HC_HTXnTBLCa_Dif        (HC_XTC_Dif << 14)
+#define HC_HTXnTBLCa_Spec       (HC_XTC_Spec << 14)
+#define HC_HTXnTBLCa_Tex        (HC_XTC_Tex << 14)
+#define HC_HTXnTBLCa_Cur        (HC_XTC_Cur << 14)
+#define HC_HTXnTBLCa_Adif       (HC_XTC_Adif << 14)
+#define HC_HTXnTBLCa_Fog        (HC_XTC_Fog << 14)
+#define HC_HTXnTBLCa_Atex       (HC_XTC_Atex << 14)
+#define HC_HTXnTBLCa_Acur       (HC_XTC_Acur << 14)
+#define HC_HTXnTBLCa_HTXnTBLRC  (HC_XTC_HTXnTBLRC << 14)
+#define HC_HTXnTBLCa_Ctexnext   (HC_XTC_Ctexnext << 14)
+#define HC_HTXnTBLCb_TOPC       (HC_XTC_TOPC << 7)
+#define HC_HTXnTBLCb_InvTOPC    (HC_XTC_InvTOPC << 7)
+#define HC_HTXnTBLCb_TOPCp5     (HC_XTC_TOPCp5 << 7)
+#define HC_HTXnTBLCb_0          (HC_XTC_0 << 7)
+#define HC_HTXnTBLCb_Dif        (HC_XTC_Dif << 7)
+#define HC_HTXnTBLCb_Spec       (HC_XTC_Spec << 7)
+#define HC_HTXnTBLCb_Tex        (HC_XTC_Tex << 7)
+#define HC_HTXnTBLCb_Cur        (HC_XTC_Cur << 7)
+#define HC_HTXnTBLCb_Adif       (HC_XTC_Adif << 7)
+#define HC_HTXnTBLCb_Fog        (HC_XTC_Fog << 7)
+#define HC_HTXnTBLCb_Atex       (HC_XTC_Atex << 7)
+#define HC_HTXnTBLCb_Acur       (HC_XTC_Acur << 7)
+#define HC_HTXnTBLCb_HTXnTBLRC  (HC_XTC_HTXnTBLRC << 7)
+#define HC_HTXnTBLCb_Ctexnext   (HC_XTC_Ctexnext << 7)
+#define HC_HTXnTBLCc_TOPC       (HC_XTC_TOPC << 0)
+#define HC_HTXnTBLCc_InvTOPC    (HC_XTC_InvTOPC << 0)
+#define HC_HTXnTBLCc_TOPCp5     (HC_XTC_TOPCp5 << 0)
+#define HC_HTXnTBLCc_0          (HC_XTC_0 << 0)
+#define HC_HTXnTBLCc_Dif        (HC_XTC_Dif << 0)
+#define HC_HTXnTBLCc_Spec       (HC_XTC_Spec << 0)
+#define HC_HTXnTBLCc_Tex        (HC_XTC_Tex << 0)
+#define HC_HTXnTBLCc_Cur        (HC_XTC_Cur << 0)
+#define HC_HTXnTBLCc_Adif       (HC_XTC_Adif << 0)
+#define HC_HTXnTBLCc_Fog        (HC_XTC_Fog << 0)
+#define HC_HTXnTBLCc_Atex       (HC_XTC_Atex << 0)
+#define HC_HTXnTBLCc_Acur       (HC_XTC_Acur << 0)
+#define HC_HTXnTBLCc_HTXnTBLRC  (HC_XTC_HTXnTBLRC << 0)
+#define HC_HTXnTBLCc_Ctexnext   (HC_XTC_Ctexnext << 0)
+/* HC_SubA_HTXnTBLCop      0x0081
+ */
+#define HC_HTXnTBLdot_MASK      0x00c00000
+#define HC_HTXnTBLCop_MASK      0x00380000
+#define HC_HTXnTBLCbias_MASK    0x0007c000
+#define HC_HTXnTBLCshift_MASK   0x00001800
+#define HC_HTXnTBLAop_MASK      0x00000380
+#define HC_HTXnTBLAbias_MASK    0x00000078
+#define HC_HTXnTBLAshift_MASK   0x00000003
+#define HC_HTXnTBLCop_Add       0x00000000
+#define HC_HTXnTBLCop_Sub       0x00080000
+#define HC_HTXnTBLCop_Min       0x00100000
+#define HC_HTXnTBLCop_Max       0x00180000
+#define HC_HTXnTBLCop_Mask      0x00200000
+#define HC_HTXnTBLCbias_Cbias           (HC_XTC_Cbias << 14)
+#define HC_HTXnTBLCbias_InvCbias        (HC_XTC_InvCbias << 14)
+#define HC_HTXnTBLCbias_0               (HC_XTC_0 << 14)
+#define HC_HTXnTBLCbias_Dif             (HC_XTC_Dif << 14)
+#define HC_HTXnTBLCbias_Spec            (HC_XTC_Spec << 14)
+#define HC_HTXnTBLCbias_Tex             (HC_XTC_Tex << 14)
+#define HC_HTXnTBLCbias_Cur             (HC_XTC_Cur << 14)
+#define HC_HTXnTBLCbias_Adif            (HC_XTC_Adif << 14)
+#define HC_HTXnTBLCbias_Fog             (HC_XTC_Fog << 14)
+#define HC_HTXnTBLCbias_Atex            (HC_XTC_Atex << 14)
+#define HC_HTXnTBLCbias_Acur            (HC_XTC_Acur << 14)
+#define HC_HTXnTBLCbias_HTXnTBLRC       (HC_XTC_HTXnTBLRC << 14)
+#define HC_HTXnTBLCshift_1      0x00000000
+#define HC_HTXnTBLCshift_2      0x00000800
+#define HC_HTXnTBLCshift_No     0x00001000
+#define HC_HTXnTBLCshift_DotP   0x00001800
+/*=* John Sheng [2003.7.18] texture combine *=*/
+#define HC_HTXnTBLDOT3   0x00080000
+#define HC_HTXnTBLDOT4   0x000C0000
+
+#define HC_HTXnTBLAop_Add       0x00000000
+#define HC_HTXnTBLAop_Sub       0x00000080
+#define HC_HTXnTBLAop_Min       0x00000100
+#define HC_HTXnTBLAop_Max       0x00000180
+#define HC_HTXnTBLAop_Mask      0x00000200
+#define HC_HTXnTBLAbias_Inv             0x00000040
+#define HC_HTXnTBLAbias_Adif            0x00000000
+#define HC_HTXnTBLAbias_Fog             0x00000008
+#define HC_HTXnTBLAbias_Acur            0x00000010
+#define HC_HTXnTBLAbias_HTXnTBLRAbias   0x00000018
+#define HC_HTXnTBLAbias_Atex            0x00000020
+#define HC_HTXnTBLAshift_1      0x00000000
+#define HC_HTXnTBLAshift_2      0x00000001
+#define HC_HTXnTBLAshift_No     0x00000002
+/* #define HC_HTXnTBLAshift_DotP   0x00000003 */
+/* HC_SubA_HTXnTBLMPFog    0x0082
+ */
+#define HC_HTXnTBLMPfog_MASK    0x00e00000
+#define HC_HTXnTBLMPfog_0       0x00000000
+#define HC_HTXnTBLMPfog_Adif    0x00200000
+#define HC_HTXnTBLMPfog_Fog     0x00400000
+#define HC_HTXnTBLMPfog_Atex    0x00600000
+#define HC_HTXnTBLMPfog_Acur    0x00800000
+#define HC_HTXnTBLMPfog_GHTXnTBLRFog    0x00a00000
+/* HC_SubA_HTXnTBLAsat     0x0083
+ *-- Define the texture alpha input.
+ */
+#define HC_XTA_TOPA             0x00000000
+#define HC_XTA_InvTOPA          0x00000008
+#define HC_XTA_TOPAp5           0x00000010
+#define HC_XTA_Adif             0x00000000
+#define HC_XTA_Fog              0x00000001
+#define HC_XTA_Acur             0x00000002
+#define HC_XTA_HTXnTBLRA        0x00000003
+#define HC_XTA_Atex             0x00000004
+#define HC_XTA_Atexnext         0x00000005
+/*--
+ */
+#define HC_HTXnTBLAsat_MASK     0x00800000
+#define HC_HTXnTBLAMB_MASK      0x00700000
+#define HC_HTXnTBLAa_MASK       0x0007c000
+#define HC_HTXnTBLAb_MASK       0x00000f80
+#define HC_HTXnTBLAc_MASK       0x0000001f
+#define HC_HTXnTBLAMB_SHIFT     20
+#define HC_HTXnTBLAa_TOPA       (HC_XTA_TOPA << 14)
+#define HC_HTXnTBLAa_InvTOPA    (HC_XTA_InvTOPA << 14)
+#define HC_HTXnTBLAa_TOPAp5     (HC_XTA_TOPAp5 << 14)
+#define HC_HTXnTBLAa_Adif       (HC_XTA_Adif << 14)
+#define HC_HTXnTBLAa_Fog        (HC_XTA_Fog << 14)
+#define HC_HTXnTBLAa_Acur       (HC_XTA_Acur << 14)
+#define HC_HTXnTBLAa_HTXnTBLRA  (HC_XTA_HTXnTBLRA << 14)
+#define HC_HTXnTBLAa_Atex       (HC_XTA_Atex << 14)
+#define HC_HTXnTBLAa_Atexnext   (HC_XTA_Atexnext << 14)
+#define HC_HTXnTBLAb_TOPA       (HC_XTA_TOPA << 7)
+#define HC_HTXnTBLAb_InvTOPA    (HC_XTA_InvTOPA << 7)
+#define HC_HTXnTBLAb_TOPAp5     (HC_XTA_TOPAp5 << 7)
+#define HC_HTXnTBLAb_Adif       (HC_XTA_Adif << 7)
+#define HC_HTXnTBLAb_Fog        (HC_XTA_Fog << 7)
+#define HC_HTXnTBLAb_Acur       (HC_XTA_Acur << 7)
+#define HC_HTXnTBLAb_HTXnTBLRA  (HC_XTA_HTXnTBLRA << 7)
+#define HC_HTXnTBLAb_Atex       (HC_XTA_Atex << 7)
+#define HC_HTXnTBLAb_Atexnext   (HC_XTA_Atexnext << 7)
+#define HC_HTXnTBLAc_TOPA       (HC_XTA_TOPA << 0)
+#define HC_HTXnTBLAc_InvTOPA    (HC_XTA_InvTOPA << 0)
+#define HC_HTXnTBLAc_TOPAp5     (HC_XTA_TOPAp5 << 0)
+#define HC_HTXnTBLAc_Adif       (HC_XTA_Adif << 0)
+#define HC_HTXnTBLAc_Fog        (HC_XTA_Fog << 0)
+#define HC_HTXnTBLAc_Acur       (HC_XTA_Acur << 0)
+#define HC_HTXnTBLAc_HTXnTBLRA  (HC_XTA_HTXnTBLRA << 0)
+#define HC_HTXnTBLAc_Atex       (HC_XTA_Atex << 0)
+#define HC_HTXnTBLAc_Atexnext   (HC_XTA_Atexnext << 0)
+/* HC_SubA_HTXnTBLRAa      0x0089
+ */
+#define HC_HTXnTBLRAa_MASK      0x00ff0000
+#define HC_HTXnTBLRAb_MASK      0x0000ff00
+#define HC_HTXnTBLRAc_MASK      0x000000ff
+#define HC_HTXnTBLRAa_SHIFT     16
+#define HC_HTXnTBLRAb_SHIFT     8
+#define HC_HTXnTBLRAc_SHIFT     0
+/* HC_SubA_HTXnTBLRFog     0x008a
+ */
+#define HC_HTXnTBLRFog_MASK     0x0000ff00
+#define HC_HTXnTBLRAbias_MASK   0x000000ff
+#define HC_HTXnTBLRFog_SHIFT    8
+#define HC_HTXnTBLRAbias_SHIFT  0
+/* HC_SubA_HTXnLScale      0x0094
+ */
+#define HC_HTXnLScale_MASK      0x0007fc00
+#define HC_HTXnLOff_MASK        0x000001ff
+#define HC_HTXnLScale_SHIFT     10
+/* HC_SubA_HTXSMD          0x0000
+ */
+#define HC_HTXSMD_MASK          0x00000080
+#define HC_HTXTMD_MASK          0x00000040
+#define HC_HTXNum_MASK          0x00000038
+#define HC_HTXTRMD_MASK         0x00000006
+#define HC_HTXCHCLR_MASK        0x00000001
+#define HC_HTXNum_SHIFT         3
+
+/* Texture Palette n
+ */
+#define HC_SubType_TexPalette0  0x00000000
+#define HC_SubType_TexPalette1  0x00000001
+#define HC_SubType_FogTable     0x00000010
+#define HC_SubType_Stipple      0x00000014
+/* HC_SubA_TexPalette0     0x0000
+ */
+#define HC_HTPnA_MASK           0xff000000
+#define HC_HTPnR_MASK           0x00ff0000
+#define HC_HTPnG_MASK           0x0000ff00
+#define HC_HTPnB_MASK           0x000000ff
+/* HC_SubA_FogTable        0x0010
+ */
+#define HC_HFPn3_MASK           0xff000000
+#define HC_HFPn2_MASK           0x00ff0000
+#define HC_HFPn1_MASK           0x0000ff00
+#define HC_HFPn_MASK            0x000000ff
+#define HC_HFPn3_SHIFT          24
+#define HC_HFPn2_SHIFT          16
+#define HC_HFPn1_SHIFT          8
+
+/* Auto Testing & Security
+ */
+#define HC_SubA_HenFIFOAT       0x0000
+#define HC_SubA_HFBDrawFirst    0x0004
+#define HC_SubA_HFBBasL         0x0005
+#define HC_SubA_HFBDst          0x0006
+/* HC_SubA_HenFIFOAT       0x0000
+ */
+#define HC_HenFIFOAT_MASK       0x00000020
+#define HC_HenGEMILock_MASK     0x00000010
+#define HC_HenFBASwap_MASK      0x00000008
+#define HC_HenOT_MASK           0x00000004
+#define HC_HenCMDQ_MASK         0x00000002
+#define HC_HenTXCTSU_MASK       0x00000001
+/* HC_SubA_HFBDrawFirst    0x0004
+ */
+#define HC_HFBDrawFirst_MASK    0x00000800
+#define HC_HFBQueue_MASK        0x00000400
+#define HC_HFBLock_MASK         0x00000200
+#define HC_HEOF_MASK            0x00000100
+#define HC_HFBBasH_MASK         0x000000ff
+
+/* GEMI Setting
+ */
+#define HC_SubA_HTArbRCM        0x0008
+#define HC_SubA_HTArbRZ         0x000a
+#define HC_SubA_HTArbWZ         0x000b
+#define HC_SubA_HTArbRTX        0x000c
+#define HC_SubA_HTArbRCW        0x000d
+#define HC_SubA_HTArbE2         0x000e
+#define HC_SubA_HArbRQCM        0x0010
+#define HC_SubA_HArbWQCM        0x0011
+#define HC_SubA_HGEMITout       0x0020
+#define HC_SubA_HFthRTXD        0x0040
+#define HC_SubA_HFthRTXA        0x0044
+#define HC_SubA_HCMDQstL        0x0050
+#define HC_SubA_HCMDQendL       0x0051
+#define HC_SubA_HCMDQLen        0x0052
+/* HC_SubA_HTArbRCM        0x0008
+ */
+#define HC_HTArbRCM_MASK        0x0000ffff
+/* HC_SubA_HTArbRZ         0x000a
+ */
+#define HC_HTArbRZ_MASK         0x0000ffff
+/* HC_SubA_HTArbWZ         0x000b
+ */
+#define HC_HTArbWZ_MASK         0x0000ffff
+/* HC_SubA_HTArbRTX        0x000c
+ */
+#define HC_HTArbRTX_MASK        0x0000ffff
+/* HC_SubA_HTArbRCW        0x000d
+ */
+#define HC_HTArbRCW_MASK        0x0000ffff
+/* HC_SubA_HTArbE2         0x000e
+ */
+#define HC_HTArbE2_MASK         0x0000ffff
+/* HC_SubA_HArbRQCM        0x0010
+ */
+#define HC_HTArbRQCM_MASK       0x0000ffff
+/* HC_SubA_HArbWQCM        0x0011
+ */
+#define HC_HArbWQCM_MASK        0x0000ffff
+/* HC_SubA_HGEMITout       0x0020
+ */
+#define HC_HGEMITout_MASK       0x000f0000
+#define HC_HNPArbZC_MASK        0x0000ffff
+#define HC_HGEMITout_SHIFT      16
+/* HC_SubA_HFthRTXD        0x0040
+ */
+#define HC_HFthRTXD_MASK        0x00ff0000
+#define HC_HFthRZD_MASK         0x0000ff00
+#define HC_HFthWZD_MASK         0x000000ff
+#define HC_HFthRTXD_SHIFT       16
+#define HC_HFthRZD_SHIFT        8
+/* HC_SubA_HFthRTXA        0x0044
+ */
+#define HC_HFthRTXA_MASK        0x000000ff
+
+/******************************************************************************
+** Define the Halcyon Internal register access constants. For simulator only.
+******************************************************************************/
+#define HC_SIMA_HAGPBstL        0x0000
+#define HC_SIMA_HAGPBendL       0x0001
+#define HC_SIMA_HAGPCMNT        0x0002
+#define HC_SIMA_HAGPBpL         0x0003
+#define HC_SIMA_HAGPBpH         0x0004
+#define HC_SIMA_HClipTB         0x0005
+#define HC_SIMA_HClipLR         0x0006
+#define HC_SIMA_HFPClipTL       0x0007
+#define HC_SIMA_HFPClipBL       0x0008
+#define HC_SIMA_HFPClipLL       0x0009
+#define HC_SIMA_HFPClipRL       0x000a
+#define HC_SIMA_HFPClipTBH      0x000b
+#define HC_SIMA_HFPClipLRH      0x000c
+#define HC_SIMA_HLP             0x000d
+#define HC_SIMA_HLPRF           0x000e
+#define HC_SIMA_HSolidCL        0x000f
+#define HC_SIMA_HPixGC          0x0010
+#define HC_SIMA_HSPXYOS         0x0011
+#define HC_SIMA_HCmdA           0x0012
+#define HC_SIMA_HCmdB           0x0013
+#define HC_SIMA_HEnable         0x0014
+#define HC_SIMA_HZWBBasL        0x0015
+#define HC_SIMA_HZWBBasH        0x0016
+#define HC_SIMA_HZWBType        0x0017
+#define HC_SIMA_HZBiasL         0x0018
+#define HC_SIMA_HZWBend         0x0019
+#define HC_SIMA_HZWTMD          0x001a
+#define HC_SIMA_HZWCDL          0x001b
+#define HC_SIMA_HZWCTAGnum      0x001c
+#define HC_SIMA_HZCYNum         0x001d
+#define HC_SIMA_HZWCFire        0x001e
+/* #define HC_SIMA_HSBBasL         0x001d */
+/* #define HC_SIMA_HSBBasH         0x001e */
+/* #define HC_SIMA_HSBFM           0x001f */
+#define HC_SIMA_HSTREF          0x0020
+#define HC_SIMA_HSTMD           0x0021
+#define HC_SIMA_HABBasL         0x0022
+#define HC_SIMA_HABBasH         0x0023
+#define HC_SIMA_HABFM           0x0024
+#define HC_SIMA_HATMD           0x0025
+#define HC_SIMA_HABLCsat        0x0026
+#define HC_SIMA_HABLCop         0x0027
+#define HC_SIMA_HABLAsat        0x0028
+#define HC_SIMA_HABLAop         0x0029
+#define HC_SIMA_HABLRCa         0x002a
+#define HC_SIMA_HABLRFCa        0x002b
+#define HC_SIMA_HABLRCbias      0x002c
+#define HC_SIMA_HABLRCb         0x002d
+#define HC_SIMA_HABLRFCb        0x002e
+#define HC_SIMA_HABLRAa         0x002f
+#define HC_SIMA_HABLRAb         0x0030
+#define HC_SIMA_HDBBasL         0x0031
+#define HC_SIMA_HDBBasH         0x0032
+#define HC_SIMA_HDBFM           0x0033
+#define HC_SIMA_HFBBMSKL        0x0034
+#define HC_SIMA_HROP            0x0035
+#define HC_SIMA_HFogLF          0x0036
+#define HC_SIMA_HFogCL          0x0037
+#define HC_SIMA_HFogCH          0x0038
+#define HC_SIMA_HFogStL         0x0039
+#define HC_SIMA_HFogStH         0x003a
+#define HC_SIMA_HFogOOdMF       0x003b
+#define HC_SIMA_HFogOOdEF       0x003c
+#define HC_SIMA_HFogEndL        0x003d
+#define HC_SIMA_HFogDenst       0x003e
+/*---- start of texture 0 setting ----
+ */
+#define HC_SIMA_HTX0L0BasL      0x0040
+#define HC_SIMA_HTX0L1BasL      0x0041
+#define HC_SIMA_HTX0L2BasL      0x0042
+#define HC_SIMA_HTX0L3BasL      0x0043
+#define HC_SIMA_HTX0L4BasL      0x0044
+#define HC_SIMA_HTX0L5BasL      0x0045
+#define HC_SIMA_HTX0L6BasL      0x0046
+#define HC_SIMA_HTX0L7BasL      0x0047
+#define HC_SIMA_HTX0L8BasL      0x0048
+#define HC_SIMA_HTX0L9BasL      0x0049
+#define HC_SIMA_HTX0LaBasL      0x004a
+#define HC_SIMA_HTX0LbBasL      0x004b
+#define HC_SIMA_HTX0LcBasL      0x004c
+#define HC_SIMA_HTX0LdBasL      0x004d
+#define HC_SIMA_HTX0LeBasL      0x004e
+#define HC_SIMA_HTX0LfBasL      0x004f
+#define HC_SIMA_HTX0L10BasL     0x0050
+#define HC_SIMA_HTX0L11BasL     0x0051
+#define HC_SIMA_HTX0L012BasH    0x0052
+#define HC_SIMA_HTX0L345BasH    0x0053
+#define HC_SIMA_HTX0L678BasH    0x0054
+#define HC_SIMA_HTX0L9abBasH    0x0055
+#define HC_SIMA_HTX0LcdeBasH    0x0056
+#define HC_SIMA_HTX0Lf1011BasH  0x0057
+#define HC_SIMA_HTX0L0Pit       0x0058
+#define HC_SIMA_HTX0L1Pit       0x0059
+#define HC_SIMA_HTX0L2Pit       0x005a
+#define HC_SIMA_HTX0L3Pit       0x005b
+#define HC_SIMA_HTX0L4Pit       0x005c
+#define HC_SIMA_HTX0L5Pit       0x005d
+#define HC_SIMA_HTX0L6Pit       0x005e
+#define HC_SIMA_HTX0L7Pit       0x005f
+#define HC_SIMA_HTX0L8Pit       0x0060
+#define HC_SIMA_HTX0L9Pit       0x0061
+#define HC_SIMA_HTX0LaPit       0x0062
+#define HC_SIMA_HTX0LbPit       0x0063
+#define HC_SIMA_HTX0LcPit       0x0064
+#define HC_SIMA_HTX0LdPit       0x0065
+#define HC_SIMA_HTX0LePit       0x0066
+#define HC_SIMA_HTX0LfPit       0x0067
+#define HC_SIMA_HTX0L10Pit      0x0068
+#define HC_SIMA_HTX0L11Pit      0x0069
+#define HC_SIMA_HTX0L0_5WE      0x006a
+#define HC_SIMA_HTX0L6_bWE      0x006b
+#define HC_SIMA_HTX0Lc_11WE     0x006c
+#define HC_SIMA_HTX0L0_5HE      0x006d
+#define HC_SIMA_HTX0L6_bHE      0x006e
+#define HC_SIMA_HTX0Lc_11HE     0x006f
+#define HC_SIMA_HTX0L0OS        0x0070
+#define HC_SIMA_HTX0TB          0x0071
+#define HC_SIMA_HTX0MPMD        0x0072
+#define HC_SIMA_HTX0CLODu       0x0073
+#define HC_SIMA_HTX0FM          0x0074
+#define HC_SIMA_HTX0TRCH        0x0075
+#define HC_SIMA_HTX0TRCL        0x0076
+#define HC_SIMA_HTX0TBC         0x0077
+#define HC_SIMA_HTX0TRAH        0x0078
+#define HC_SIMA_HTX0TBLCsat     0x0079
+#define HC_SIMA_HTX0TBLCop      0x007a
+#define HC_SIMA_HTX0TBLMPfog    0x007b
+#define HC_SIMA_HTX0TBLAsat     0x007c
+#define HC_SIMA_HTX0TBLRCa      0x007d
+#define HC_SIMA_HTX0TBLRCb      0x007e
+#define HC_SIMA_HTX0TBLRCc      0x007f
+#define HC_SIMA_HTX0TBLRCbias   0x0080
+#define HC_SIMA_HTX0TBLRAa      0x0081
+#define HC_SIMA_HTX0TBLRFog     0x0082
+#define HC_SIMA_HTX0BumpM00     0x0083
+#define HC_SIMA_HTX0BumpM01     0x0084
+#define HC_SIMA_HTX0BumpM10     0x0085
+#define HC_SIMA_HTX0BumpM11     0x0086
+#define HC_SIMA_HTX0LScale      0x0087
+/*---- end of texture 0 setting ----      0x008f
+ */
+#define HC_SIMA_TX0TX1_OFF      0x0050
+/*---- start of texture 1 setting ----
+ */
+#define HC_SIMA_HTX1L0BasL      (HC_SIMA_HTX0L0BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L1BasL      (HC_SIMA_HTX0L1BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L2BasL      (HC_SIMA_HTX0L2BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L3BasL      (HC_SIMA_HTX0L3BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L4BasL      (HC_SIMA_HTX0L4BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L5BasL      (HC_SIMA_HTX0L5BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L6BasL      (HC_SIMA_HTX0L6BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L7BasL      (HC_SIMA_HTX0L7BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L8BasL      (HC_SIMA_HTX0L8BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L9BasL      (HC_SIMA_HTX0L9BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LaBasL      (HC_SIMA_HTX0LaBasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LbBasL      (HC_SIMA_HTX0LbBasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LcBasL      (HC_SIMA_HTX0LcBasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LdBasL      (HC_SIMA_HTX0LdBasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LeBasL      (HC_SIMA_HTX0LeBasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LfBasL      (HC_SIMA_HTX0LfBasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L10BasL     (HC_SIMA_HTX0L10BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L11BasL     (HC_SIMA_HTX0L11BasL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L012BasH    (HC_SIMA_HTX0L012BasH + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L345BasH    (HC_SIMA_HTX0L345BasH + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L678BasH    (HC_SIMA_HTX0L678BasH + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L9abBasH    (HC_SIMA_HTX0L9abBasH + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LcdeBasH    (HC_SIMA_HTX0LcdeBasH + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1Lf1011BasH  (HC_SIMA_HTX0Lf1011BasH + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L0Pit       (HC_SIMA_HTX0L0Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L1Pit       (HC_SIMA_HTX0L1Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L2Pit       (HC_SIMA_HTX0L2Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L3Pit       (HC_SIMA_HTX0L3Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L4Pit       (HC_SIMA_HTX0L4Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L5Pit       (HC_SIMA_HTX0L5Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L6Pit       (HC_SIMA_HTX0L6Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L7Pit       (HC_SIMA_HTX0L7Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L8Pit       (HC_SIMA_HTX0L8Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L9Pit       (HC_SIMA_HTX0L9Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LaPit       (HC_SIMA_HTX0LaPit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LbPit       (HC_SIMA_HTX0LbPit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LcPit       (HC_SIMA_HTX0LcPit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LdPit       (HC_SIMA_HTX0LdPit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LePit       (HC_SIMA_HTX0LePit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LfPit       (HC_SIMA_HTX0LfPit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L10Pit      (HC_SIMA_HTX0L10Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L11Pit      (HC_SIMA_HTX0L11Pit + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L0_5WE      (HC_SIMA_HTX0L0_5WE + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L6_bWE      (HC_SIMA_HTX0L6_bWE + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1Lc_11WE     (HC_SIMA_HTX0Lc_11WE + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L0_5HE      (HC_SIMA_HTX0L0_5HE + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L6_bHE      (HC_SIMA_HTX0L6_bHE + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1Lc_11HE      (HC_SIMA_HTX0Lc_11HE + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1L0OS        (HC_SIMA_HTX0L0OS + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TB          (HC_SIMA_HTX0TB + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1MPMD        (HC_SIMA_HTX0MPMD + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1CLODu       (HC_SIMA_HTX0CLODu + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1FM          (HC_SIMA_HTX0FM + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TRCH        (HC_SIMA_HTX0TRCH + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TRCL        (HC_SIMA_HTX0TRCL + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBC         (HC_SIMA_HTX0TBC + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TRAH        (HC_SIMA_HTX0TRAH + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LTC         (HC_SIMA_HTX0LTC + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LTA         (HC_SIMA_HTX0LTA + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLCsat     (HC_SIMA_HTX0TBLCsat + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLCop      (HC_SIMA_HTX0TBLCop + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLMPfog    (HC_SIMA_HTX0TBLMPfog + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLAsat     (HC_SIMA_HTX0TBLAsat + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLRCa      (HC_SIMA_HTX0TBLRCa + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLRCb      (HC_SIMA_HTX0TBLRCb + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLRCc      (HC_SIMA_HTX0TBLRCc + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLRCbias   (HC_SIMA_HTX0TBLRCbias + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLRAa      (HC_SIMA_HTX0TBLRAa + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1TBLRFog     (HC_SIMA_HTX0TBLRFog + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1BumpM00     (HC_SIMA_HTX0BumpM00 + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1BumpM01     (HC_SIMA_HTX0BumpM01 + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1BumpM10     (HC_SIMA_HTX0BumpM10 + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1BumpM11     (HC_SIMA_HTX0BumpM11 + HC_SIMA_TX0TX1_OFF)
+#define HC_SIMA_HTX1LScale      (HC_SIMA_HTX0LScale + HC_SIMA_TX0TX1_OFF)
+/*---- end of texture 1 setting ---- 0xaf
+ */
+#define HC_SIMA_HTXSMD          0x00b0
+#define HC_SIMA_HenFIFOAT       0x00b1
+#define HC_SIMA_HFBDrawFirst    0x00b2
+#define HC_SIMA_HFBBasL         0x00b3
+#define HC_SIMA_HTArbRCM        0x00b4
+#define HC_SIMA_HTArbRZ         0x00b5
+#define HC_SIMA_HTArbWZ         0x00b6
+#define HC_SIMA_HTArbRTX        0x00b7
+#define HC_SIMA_HTArbRCW        0x00b8
+#define HC_SIMA_HTArbE2         0x00b9
+#define HC_SIMA_HGEMITout       0x00ba
+#define HC_SIMA_HFthRTXD        0x00bb
+#define HC_SIMA_HFthRTXA        0x00bc
+/* Define the texture palette 0
+ */
+#define HC_SIMA_HTP0            0x0100
+#define HC_SIMA_HTP1            0x0200
+#define HC_SIMA_FOGTABLE        0x0300
+#define HC_SIMA_STIPPLE         0x0400
+#define HC_SIMA_HE3Fire         0x0440
+#define HC_SIMA_TRANS_SET       0x0441
+#define HC_SIMA_HREngSt         0x0442
+#define HC_SIMA_HRFIFOempty     0x0443
+#define HC_SIMA_HRFIFOfull      0x0444
+#define HC_SIMA_HRErr           0x0445
+#define HC_SIMA_FIFOstatus      0x0446
+
+/******************************************************************************
+** Define the AGP command header.
+******************************************************************************/
+#define HC_ACMD_MASK            0xfe000000
+#define HC_ACMD_SUB_MASK        0x0c000000
+#define HC_ACMD_HCmdA           0xee000000
+#define HC_ACMD_HCmdB           0xec000000
+#define HC_ACMD_HCmdC           0xea000000
+#define HC_ACMD_H1              0xf0000000
+#define HC_ACMD_H2              0xf2000000
+#define HC_ACMD_H3              0xf4000000
+#define HC_ACMD_H4              0xf6000000
+
+#define HC_ACMD_H1IO_MASK       0x000001ff
+#define HC_ACMD_H2IO1_MASK      0x001ff000
+#define HC_ACMD_H2IO2_MASK      0x000001ff
+#define HC_ACMD_H2IO1_SHIFT     12
+#define HC_ACMD_H2IO2_SHIFT     0
+#define HC_ACMD_H3IO_MASK       0x000001ff
+#define HC_ACMD_H3COUNT_MASK    0x01fff000
+#define HC_ACMD_H3COUNT_SHIFT   12
+#define HC_ACMD_H4ID_MASK       0x000001ff
+#define HC_ACMD_H4COUNT_MASK    0x01fffe00
+#define HC_ACMD_H4COUNT_SHIFT   9
+
+/********************************************************************************
+** Define Header
+********************************************************************************/
+#define HC_HEADER2              0xF210F110
+
+/********************************************************************************
+** Define Dummy Value
+********************************************************************************/
+#define HC_DUMMY                0xCCCCCCCC
+/********************************************************************************
+** Define for DMA use
+********************************************************************************/
+#define HALCYON_HEADER2     0XF210F110
+#define HALCYON_FIRECMD     0XEE100000
+#define HALCYON_FIREMASK    0XFFF00000
+#define HALCYON_CMDB        0XEC000000
+#define HALCYON_CMDBMASK    0XFFFE0000
+#define HALCYON_SUB_ADDR0   0X00000000
+#define HALCYON_HEADER1MASK 0XFFFFFC00
+#define HALCYON_HEADER1     0XF0000000
+#define HC_SubA_HAGPBstL        0x0060
+#define HC_SubA_HAGPBendL       0x0061
+#define HC_SubA_HAGPCMNT        0x0062
+#define HC_SubA_HAGPBpL         0x0063
+#define HC_SubA_HAGPBpH         0x0064
+#define HC_HAGPCMNT_MASK        0x00800000
+#define HC_HCmdErrClr_MASK      0x00400000
+#define HC_HAGPBendH_MASK       0x0000ff00
+#define HC_HAGPBstH_MASK        0x000000ff
+#define HC_HAGPBendH_SHIFT      8
+#define HC_HAGPBstH_SHIFT       0
+#define HC_HAGPBpL_MASK         0x00fffffc
+#define HC_HAGPBpID_MASK        0x00000003
+#define HC_HAGPBpID_PAUSE       0x00000000
+#define HC_HAGPBpID_JUMP        0x00000001
+#define HC_HAGPBpID_STOP        0x00000002
+#define HC_HAGPBpH_MASK         0x00ffffff
+
+
+#define VIA_VIDEO_HEADER5       0xFE040000
+#define VIA_VIDEO_HEADER6       0xFE050000
+#define VIA_VIDEO_HEADER7       0xFE060000
+#define VIA_VIDEOMASK           0xFFFF0000
+#endif
diff --git a/drivers/char/drm/via_dma.c b/drivers/char/drm/via_dma.c
new file mode 100644
index 000000000000..82f839451622
--- /dev/null
+++ b/drivers/char/drm/via_dma.c
@@ -0,0 +1,741 @@
+/* via_dma.c -- DMA support for the VIA Unichrome/Pro
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * Copyright 2004 Digeo, Inc., Palo Alto, CA, U.S.A.
+ * All Rights Reserved.
+ * 
+ * Copyright 2004 The Unichrome project.
+ * All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors: 
+ *    Tungsten Graphics, 
+ *    Erdi Chen, 
+ *    Thomas Hellstrom.
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "via_drm.h"
+#include "via_drv.h"
+#include "via_3d_reg.h"
+
+#define CMDBUF_ALIGNMENT_SIZE   (0x100)
+#define CMDBUF_ALIGNMENT_MASK   (0x0ff)
+
+/* defines for VIA 3D registers */
+#define VIA_REG_STATUS          0x400
+#define VIA_REG_TRANSET         0x43C
+#define VIA_REG_TRANSPACE       0x440
+
+/* VIA_REG_STATUS(0x400): Engine Status */
+#define VIA_CMD_RGTR_BUSY       0x00000080      /* Command Regulator is busy */
+#define VIA_2D_ENG_BUSY         0x00000001      /* 2D Engine is busy */
+#define VIA_3D_ENG_BUSY         0x00000002      /* 3D Engine is busy */
+#define VIA_VR_QUEUE_BUSY       0x00020000      /* Virtual Queue is busy */
+
+#define SetReg2DAGP(nReg, nData) {                              \
+        *((uint32_t *)(vb)) = ((nReg) >> 2) | HALCYON_HEADER1;  \
+        *((uint32_t *)(vb) + 1) = (nData);                      \
+        vb = ((uint32_t *)vb) + 2;                              \
+        dev_priv->dma_low +=8;                                  \
+}
+
+#define via_flush_write_combine() DRM_MEMORYBARRIER() 
+
+#define VIA_OUT_RING_QW(w1,w2)                  \
+        *vb++ = (w1);                           \
+        *vb++ = (w2);                           \
+        dev_priv->dma_low += 8; 
+
+static void via_cmdbuf_start(drm_via_private_t * dev_priv);
+static void via_cmdbuf_pause(drm_via_private_t * dev_priv);
+static void via_cmdbuf_reset(drm_via_private_t * dev_priv);
+static void via_cmdbuf_rewind(drm_via_private_t * dev_priv);
+static int via_wait_idle(drm_via_private_t * dev_priv);
+static void via_pad_cache(drm_via_private_t *dev_priv, int qwords);
+
+
+/*
+ * Free space in command buffer.
+ */
+
+static uint32_t
+via_cmdbuf_space(drm_via_private_t *dev_priv)
+{
+        uint32_t agp_base = dev_priv->dma_offset + 
+                (uint32_t) dev_priv->agpAddr;
+        uint32_t hw_addr = *(dev_priv->hw_addr_ptr) - agp_base;
+        
+        return ((hw_addr <= dev_priv->dma_low) ? 
+                (dev_priv->dma_high + hw_addr - dev_priv->dma_low) : 
+                (hw_addr - dev_priv->dma_low));
+}
+
+/*
+ * How much does the command regulator lag behind?
+ */
+
+static uint32_t
+via_cmdbuf_lag(drm_via_private_t *dev_priv)
+{
+        uint32_t agp_base = dev_priv->dma_offset + 
+                (uint32_t) dev_priv->agpAddr;
+        uint32_t hw_addr = *(dev_priv->hw_addr_ptr) - agp_base;
+        
+        return ((hw_addr <= dev_priv->dma_low) ? 
+                (dev_priv->dma_low - hw_addr) : 
+                (dev_priv->dma_wrap + dev_priv->dma_low - hw_addr));
+}
+
+/*
+ * Check that the given size fits in the buffer, otherwise wait.
+ */
+
+static inline int
+via_cmdbuf_wait(drm_via_private_t * dev_priv, unsigned int size)
+{
+        uint32_t agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
+        uint32_t cur_addr, hw_addr, next_addr;
+        volatile uint32_t *hw_addr_ptr;
+        uint32_t count;
+        hw_addr_ptr = dev_priv->hw_addr_ptr;
+        cur_addr = dev_priv->dma_low;
+        next_addr = cur_addr + size + 512*1024;
+        count = 1000000;
+        do {
+                hw_addr = *hw_addr_ptr - agp_base;
+                if (count-- == 0) {
+                        DRM_ERROR("via_cmdbuf_wait timed out hw %x cur_addr %x next_addr %x\n",
+                                  hw_addr, cur_addr, next_addr);
+                        return -1;
+                }
+        } while ((cur_addr < hw_addr) && (next_addr >= hw_addr));
+        return 0;
+}
+
+
+/*
+ * Checks whether buffer head has reach the end. Rewind the ring buffer
+ * when necessary.
+ *
+ * Returns virtual pointer to ring buffer.
+ */
+
+static inline uint32_t *via_check_dma(drm_via_private_t * dev_priv,
+                                      unsigned int size)
+{
+        if ((dev_priv->dma_low + size + 4*CMDBUF_ALIGNMENT_SIZE) > dev_priv->dma_high) {
+                via_cmdbuf_rewind(dev_priv);
+        }
+        if (via_cmdbuf_wait(dev_priv, size) != 0) {
+                return NULL;
+        }
+
+        return (uint32_t *) (dev_priv->dma_ptr + dev_priv->dma_low);
+}
+
+int via_dma_cleanup(drm_device_t * dev)
+{
+        if (dev->dev_private) {
+                drm_via_private_t *dev_priv =
+                        (drm_via_private_t *) dev->dev_private;
+
+                if (dev_priv->ring.virtual_start) {
+                        via_cmdbuf_reset(dev_priv);
+
+                        drm_core_ioremapfree(&dev_priv->ring.map, dev);
+                        dev_priv->ring.virtual_start = NULL;
+                }
+
+        }
+
+        return 0;
+}
+
+static int via_initialize(drm_device_t * dev,
+                          drm_via_private_t * dev_priv,
+                          drm_via_dma_init_t * init)
+{
+        if (!dev_priv || !dev_priv->mmio) {
+                DRM_ERROR("via_dma_init called before via_map_init\n");
+                return DRM_ERR(EFAULT);
+        }
+
+        if (dev_priv->ring.virtual_start != NULL) {
+                DRM_ERROR("%s called again without calling cleanup\n",
+                          __FUNCTION__);
+                return DRM_ERR(EFAULT);
+        }
+
+        if (!dev->agp || !dev->agp->base) {
+                DRM_ERROR("%s called with no agp memory available\n", 
+                          __FUNCTION__);
+                return DRM_ERR(EFAULT);
+        }
+
+        dev_priv->ring.map.offset = dev->agp->base + init->offset;
+        dev_priv->ring.map.size = init->size;
+        dev_priv->ring.map.type = 0;
+        dev_priv->ring.map.flags = 0;
+        dev_priv->ring.map.mtrr = 0;
+
+        drm_core_ioremap(&dev_priv->ring.map, dev);
+
+        if (dev_priv->ring.map.handle == NULL) {
+                via_dma_cleanup(dev);
+                DRM_ERROR("can not ioremap virtual address for"
+                          " ring buffer\n");
+                return DRM_ERR(ENOMEM);
+        }
+
+        dev_priv->ring.virtual_start = dev_priv->ring.map.handle;
+
+        dev_priv->dma_ptr = dev_priv->ring.virtual_start;
+        dev_priv->dma_low = 0;
+        dev_priv->dma_high = init->size;
+        dev_priv->dma_wrap = init->size;
+        dev_priv->dma_offset = init->offset;
+        dev_priv->last_pause_ptr = NULL;
+        dev_priv->hw_addr_ptr = dev_priv->mmio->handle + init->reg_pause_addr;
+
+        via_cmdbuf_start(dev_priv);
+
+        return 0;
+}
+
+int via_dma_init(DRM_IOCTL_ARGS)
+{
+        DRM_DEVICE;
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        drm_via_dma_init_t init;
+        int retcode = 0;
+
+        DRM_COPY_FROM_USER_IOCTL(init, (drm_via_dma_init_t *) data,
+                                 sizeof(init));
+
+        switch (init.func) {
+        case VIA_INIT_DMA:
+                if (!capable(CAP_SYS_ADMIN))
+                        retcode = DRM_ERR(EPERM);
+                else
+                        retcode = via_initialize(dev, dev_priv, &init);
+                break;
+        case VIA_CLEANUP_DMA:
+                if (!capable(CAP_SYS_ADMIN))
+                        retcode = DRM_ERR(EPERM);
+                else
+                        retcode = via_dma_cleanup(dev);
+                break;
+        case VIA_DMA_INITIALIZED:
+                retcode = (dev_priv->ring.virtual_start != NULL) ? 
+                        0: DRM_ERR( EFAULT );
+                break;
+        default:
+                retcode = DRM_ERR(EINVAL);
+                break;
+        }
+
+        return retcode;
+}
+
+
+
+static int via_dispatch_cmdbuffer(drm_device_t * dev, drm_via_cmdbuffer_t * cmd)
+{
+        drm_via_private_t *dev_priv;
+        uint32_t *vb;
+        int ret;
+
+        dev_priv = (drm_via_private_t *) dev->dev_private;
+
+        if (dev_priv->ring.virtual_start == NULL) {
+                DRM_ERROR("%s called without initializing AGP ring buffer.\n",
+                          __FUNCTION__);
+                return DRM_ERR(EFAULT);
+        }
+
+        if (cmd->size > VIA_PCI_BUF_SIZE) {
+                return DRM_ERR(ENOMEM);
+        } 
+
+
+        if (DRM_COPY_FROM_USER(dev_priv->pci_buf, cmd->buf, cmd->size))
+                return DRM_ERR(EFAULT);
+
+        /*
+         * Running this function on AGP memory is dead slow. Therefore
+         * we run it on a temporary cacheable system memory buffer and
+         * copy it to AGP memory when ready.
+         */
+
+                
+        if ((ret = via_verify_command_stream((uint32_t *)dev_priv->pci_buf, cmd->size, dev, 1))) {
+                return ret;
+        }
+        
+        
+        vb = via_check_dma(dev_priv, (cmd->size < 0x100) ? 0x102 : cmd->size);
+        if (vb == NULL) {
+                return DRM_ERR(EAGAIN);
+        }
+
+        memcpy(vb, dev_priv->pci_buf, cmd->size);
+        
+        dev_priv->dma_low += cmd->size;
+
+        /*
+         * Small submissions somehow stalls the CPU. (AGP cache effects?)
+         * pad to greater size.
+         */
+
+        if (cmd->size < 0x100)
+          via_pad_cache(dev_priv,(0x100 - cmd->size) >> 3);
+        via_cmdbuf_pause(dev_priv);
+
+        return 0;
+}
+
+int via_driver_dma_quiescent(drm_device_t * dev)
+{
+        drm_via_private_t *dev_priv = dev->dev_private;
+
+        if (!via_wait_idle(dev_priv)) {
+                return DRM_ERR(EBUSY);
+        }
+        return 0;
+}
+
+int via_flush_ioctl(DRM_IOCTL_ARGS)
+{
+        DRM_DEVICE;
+
+        LOCK_TEST_WITH_RETURN( dev, filp );
+
+        return via_driver_dma_quiescent(dev);
+}
+
+int via_cmdbuffer(DRM_IOCTL_ARGS)
+{
+        DRM_DEVICE;
+        drm_via_cmdbuffer_t cmdbuf;
+        int ret;
+
+        LOCK_TEST_WITH_RETURN( dev, filp );
+
+        DRM_COPY_FROM_USER_IOCTL(cmdbuf, (drm_via_cmdbuffer_t *) data,
+                                 sizeof(cmdbuf));
+
+        DRM_DEBUG("via cmdbuffer, buf %p size %lu\n", cmdbuf.buf, cmdbuf.size);
+
+        ret = via_dispatch_cmdbuffer(dev, &cmdbuf);
+        if (ret) {
+                return ret;
+        }
+
+        return 0;
+}
+
+extern int 
+via_parse_command_stream(drm_device_t *dev, const uint32_t * buf, unsigned int size);
+static int via_dispatch_pci_cmdbuffer(drm_device_t * dev,
+                                      drm_via_cmdbuffer_t * cmd)
+{
+        drm_via_private_t *dev_priv = dev->dev_private;
+        int ret;
+
+        if (cmd->size > VIA_PCI_BUF_SIZE) {
+                return DRM_ERR(ENOMEM);
+        } 
+        if (DRM_COPY_FROM_USER(dev_priv->pci_buf, cmd->buf, cmd->size))
+                return DRM_ERR(EFAULT);
+        
+        if ((ret = via_verify_command_stream((uint32_t *)dev_priv->pci_buf, cmd->size, dev, 0))) {
+                return ret;
+        }
+        
+        ret = via_parse_command_stream(dev, (const uint32_t *)dev_priv->pci_buf, cmd->size);
+        return ret;
+}
+
+int via_pci_cmdbuffer(DRM_IOCTL_ARGS)
+{
+        DRM_DEVICE;
+        drm_via_cmdbuffer_t cmdbuf;
+        int ret;
+
+        LOCK_TEST_WITH_RETURN( dev, filp );
+
+        DRM_COPY_FROM_USER_IOCTL(cmdbuf, (drm_via_cmdbuffer_t *) data,
+                                 sizeof(cmdbuf));
+
+        DRM_DEBUG("via_pci_cmdbuffer, buf %p size %lu\n", cmdbuf.buf,
+                  cmdbuf.size);
+
+        ret = via_dispatch_pci_cmdbuffer(dev, &cmdbuf);
+        if (ret) {
+                return ret;
+        }
+
+        return 0;
+}
+
+
+static inline uint32_t *via_align_buffer(drm_via_private_t * dev_priv,
+                                         uint32_t * vb, int qw_count)
+{
+        for (; qw_count > 0; --qw_count) {
+                VIA_OUT_RING_QW(HC_DUMMY, HC_DUMMY);
+        }
+        return vb;
+}
+
+
+/*
+ * This function is used internally by ring buffer mangement code.
+ *
+ * Returns virtual pointer to ring buffer.
+ */
+static inline uint32_t *via_get_dma(drm_via_private_t * dev_priv)
+{
+        return (uint32_t *) (dev_priv->dma_ptr + dev_priv->dma_low);
+}
+
+/*
+ * Hooks a segment of data into the tail of the ring-buffer by
+ * modifying the pause address stored in the buffer itself. If
+ * the regulator has already paused, restart it.
+ */
+static int via_hook_segment(drm_via_private_t *dev_priv,
+                            uint32_t pause_addr_hi, uint32_t pause_addr_lo,
+                            int no_pci_fire)
+{
+        int paused, count;
+        volatile uint32_t *paused_at = dev_priv->last_pause_ptr;
+
+        via_flush_write_combine();
+        while(! *(via_get_dma(dev_priv)-1));
+        *dev_priv->last_pause_ptr = pause_addr_lo;
+        via_flush_write_combine();
+
+        /*
+         * The below statement is inserted to really force the flush.
+         * Not sure it is needed.
+         */
+
+        while(! *dev_priv->last_pause_ptr);
+        dev_priv->last_pause_ptr = via_get_dma(dev_priv) - 1;
+        while(! *dev_priv->last_pause_ptr);
+
+
+        paused = 0;
+        count = 20; 
+
+        while (!(paused = (VIA_READ(0x41c) & 0x80000000)) && count--);
+        if ((count <= 8) && (count >= 0)) {
+                uint32_t rgtr, ptr;
+                rgtr = *(dev_priv->hw_addr_ptr);
+                ptr = ((char *)dev_priv->last_pause_ptr - dev_priv->dma_ptr) + 
+                        dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr + 4 - 
+                        CMDBUF_ALIGNMENT_SIZE;
+                if (rgtr <= ptr) {
+                        DRM_ERROR("Command regulator\npaused at count %d, address %x, "
+                                  "while current pause address is %x.\n"
+                                  "Please mail this message to "
+                                  "<unichrome-devel@lists.sourceforge.net>\n",
+                                  count, rgtr, ptr);
+                }
+        }
+                
+        if (paused && !no_pci_fire) {
+                uint32_t rgtr,ptr;
+                uint32_t ptr_low;
+
+                count = 1000000;
+                while ((VIA_READ(VIA_REG_STATUS) & VIA_CMD_RGTR_BUSY) && count--);
+                
+                rgtr = *(dev_priv->hw_addr_ptr);
+                ptr = ((char *)paused_at - dev_priv->dma_ptr) + 
+                        dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr + 4;
+                
+
+                ptr_low = (ptr > 3*CMDBUF_ALIGNMENT_SIZE) ? 
+                        ptr - 3*CMDBUF_ALIGNMENT_SIZE : 0;
+                if (rgtr <= ptr && rgtr >= ptr_low) {
+                        VIA_WRITE(VIA_REG_TRANSET, (HC_ParaType_PreCR << 16));
+                        VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi);
+                        VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo);
+                } 
+        }
+        return paused;
+}
+
+
+
+static int via_wait_idle(drm_via_private_t * dev_priv)
+{
+        int count = 10000000;
+        while (count-- && (VIA_READ(VIA_REG_STATUS) &
+                           (VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY |
+                            VIA_3D_ENG_BUSY))) ;
+        return count;
+}
+
+static uint32_t *via_align_cmd(drm_via_private_t * dev_priv, uint32_t cmd_type,
+                               uint32_t addr, uint32_t *cmd_addr_hi, 
+                               uint32_t *cmd_addr_lo,
+                               int skip_wait)
+{
+        uint32_t agp_base;
+        uint32_t cmd_addr, addr_lo, addr_hi;
+        uint32_t *vb;
+        uint32_t qw_pad_count;
+
+        if (!skip_wait)
+                via_cmdbuf_wait(dev_priv, 2*CMDBUF_ALIGNMENT_SIZE);
+
+        vb = via_get_dma(dev_priv);
+        VIA_OUT_RING_QW( HC_HEADER2 | ((VIA_REG_TRANSET >> 2) << 12) |
+                         (VIA_REG_TRANSPACE >> 2), HC_ParaType_PreCR << 16); 
+        agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
+        qw_pad_count = (CMDBUF_ALIGNMENT_SIZE >> 3) -
+                ((dev_priv->dma_low & CMDBUF_ALIGNMENT_MASK) >> 3);
+
+        
+        cmd_addr = (addr) ? addr : 
+                agp_base + dev_priv->dma_low - 8 + (qw_pad_count << 3);
+        addr_lo = ((HC_SubA_HAGPBpL << 24) | (cmd_type & HC_HAGPBpID_MASK) |
+                   (cmd_addr & HC_HAGPBpL_MASK));
+        addr_hi = ((HC_SubA_HAGPBpH << 24) | (cmd_addr >> 24));
+
+        vb = via_align_buffer(dev_priv, vb, qw_pad_count - 1);
+        VIA_OUT_RING_QW(*cmd_addr_hi = addr_hi, 
+                        *cmd_addr_lo = addr_lo);
+        return vb;
+}
+
+
+
+
+static void via_cmdbuf_start(drm_via_private_t * dev_priv)
+{
+        uint32_t pause_addr_lo, pause_addr_hi;
+        uint32_t start_addr, start_addr_lo;
+        uint32_t end_addr, end_addr_lo;
+        uint32_t command;
+        uint32_t agp_base;
+
+
+        dev_priv->dma_low = 0;
+
+        agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
+        start_addr = agp_base;
+        end_addr = agp_base + dev_priv->dma_high;
+
+        start_addr_lo = ((HC_SubA_HAGPBstL << 24) | (start_addr & 0xFFFFFF));
+        end_addr_lo = ((HC_SubA_HAGPBendL << 24) | (end_addr & 0xFFFFFF));
+        command = ((HC_SubA_HAGPCMNT << 24) | (start_addr >> 24) |
+                   ((end_addr & 0xff000000) >> 16));
+
+        dev_priv->last_pause_ptr = 
+                via_align_cmd(dev_priv, HC_HAGPBpID_PAUSE, 0, 
+                              &pause_addr_hi, & pause_addr_lo, 1) - 1;
+
+        via_flush_write_combine();
+        while(! *dev_priv->last_pause_ptr);
+
+        VIA_WRITE(VIA_REG_TRANSET, (HC_ParaType_PreCR << 16));
+        VIA_WRITE(VIA_REG_TRANSPACE, command);
+        VIA_WRITE(VIA_REG_TRANSPACE, start_addr_lo);
+        VIA_WRITE(VIA_REG_TRANSPACE, end_addr_lo);
+
+        VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_hi);
+        VIA_WRITE(VIA_REG_TRANSPACE, pause_addr_lo);
+
+        VIA_WRITE(VIA_REG_TRANSPACE, command | HC_HAGPCMNT_MASK);
+}
+
+static void via_pad_cache(drm_via_private_t *dev_priv, int qwords)
+{
+        uint32_t *vb;
+
+        via_cmdbuf_wait(dev_priv, qwords + 2);
+        vb = via_get_dma(dev_priv);
+        VIA_OUT_RING_QW( HC_HEADER2, HC_ParaType_NotTex << 16);
+        via_align_buffer(dev_priv,vb,qwords);
+}
+
+static inline void via_dummy_bitblt(drm_via_private_t * dev_priv)
+{
+        uint32_t *vb = via_get_dma(dev_priv);
+        SetReg2DAGP(0x0C, (0 | (0 << 16)));
+        SetReg2DAGP(0x10, 0 | (0 << 16));
+        SetReg2DAGP(0x0, 0x1 | 0x2000 | 0xAA000000); 
+}
+
+
+static void via_cmdbuf_jump(drm_via_private_t * dev_priv)
+{
+        uint32_t agp_base;
+        uint32_t pause_addr_lo, pause_addr_hi;
+        uint32_t jump_addr_lo, jump_addr_hi;
+        volatile uint32_t *last_pause_ptr;
+        uint32_t dma_low_save1, dma_low_save2;
+
+        agp_base = dev_priv->dma_offset + (uint32_t) dev_priv->agpAddr;
+        via_align_cmd(dev_priv,  HC_HAGPBpID_JUMP, 0, &jump_addr_hi, 
+                      &jump_addr_lo, 0);
+        
+        dev_priv->dma_wrap = dev_priv->dma_low;
+
+
+        /*
+         * Wrap command buffer to the beginning.
+         */
+
+        dev_priv->dma_low = 0;
+        if (via_cmdbuf_wait(dev_priv, CMDBUF_ALIGNMENT_SIZE) != 0) {
+                DRM_ERROR("via_cmdbuf_jump failed\n");
+        }
+
+        via_dummy_bitblt(dev_priv);
+        via_dummy_bitblt(dev_priv); 
+
+        last_pause_ptr = via_align_cmd(dev_priv,  HC_HAGPBpID_PAUSE, 0, &pause_addr_hi, 
+                                       &pause_addr_lo, 0) -1;
+        via_align_cmd(dev_priv,  HC_HAGPBpID_PAUSE, 0, &pause_addr_hi, 
+                      &pause_addr_lo, 0);
+
+        *last_pause_ptr = pause_addr_lo;
+        dma_low_save1 = dev_priv->dma_low;
+
+        /*
+         * Now, set a trap that will pause the regulator if it tries to rerun the old
+         * command buffer. (Which may happen if via_hook_segment detecs a command regulator pause
+         * and reissues the jump command over PCI, while the regulator has already taken the jump
+         * and actually paused at the current buffer end).
+         * There appears to be no other way to detect this condition, since the hw_addr_pointer
+         * does not seem to get updated immediately when a jump occurs.
+         */
+
+        last_pause_ptr = via_align_cmd(dev_priv,  HC_HAGPBpID_PAUSE, 0, &pause_addr_hi, 
+                                       &pause_addr_lo, 0) -1;
+        via_align_cmd(dev_priv,  HC_HAGPBpID_PAUSE, 0, &pause_addr_hi, 
+                      &pause_addr_lo, 0);
+        *last_pause_ptr = pause_addr_lo;
+
+        dma_low_save2 = dev_priv->dma_low;
+        dev_priv->dma_low = dma_low_save1;      
+        via_hook_segment( dev_priv, jump_addr_hi, jump_addr_lo, 0);
+        dev_priv->dma_low = dma_low_save2;
+        via_hook_segment( dev_priv, pause_addr_hi, pause_addr_lo, 0);
+}
+
+
+static void via_cmdbuf_rewind(drm_via_private_t * dev_priv)
+{
+        via_cmdbuf_jump(dev_priv); 
+}
+
+static void via_cmdbuf_flush(drm_via_private_t * dev_priv, uint32_t cmd_type)
+{
+        uint32_t pause_addr_lo, pause_addr_hi;
+
+        via_align_cmd(dev_priv, cmd_type, 0, &pause_addr_hi, &pause_addr_lo, 0);
+        via_hook_segment( dev_priv, pause_addr_hi, pause_addr_lo, 0);
+}
+
+
+static void via_cmdbuf_pause(drm_via_private_t * dev_priv)
+{
+        via_cmdbuf_flush(dev_priv, HC_HAGPBpID_PAUSE);
+}
+
+static void via_cmdbuf_reset(drm_via_private_t * dev_priv)
+{
+        via_cmdbuf_flush(dev_priv, HC_HAGPBpID_STOP);
+        via_wait_idle(dev_priv);
+}
+
+/*
+ * User interface to the space and lag functions.
+ */
+
+int 
+via_cmdbuf_size(DRM_IOCTL_ARGS)
+{
+        DRM_DEVICE;
+        drm_via_cmdbuf_size_t d_siz;
+        int ret = 0;
+        uint32_t tmp_size, count;
+        drm_via_private_t *dev_priv;
+
+        DRM_DEBUG("via cmdbuf_size\n");
+        LOCK_TEST_WITH_RETURN( dev, filp );
+
+        dev_priv = (drm_via_private_t *) dev->dev_private;
+
+        if (dev_priv->ring.virtual_start == NULL) {
+                DRM_ERROR("%s called without initializing AGP ring buffer.\n",
+                          __FUNCTION__);
+                return DRM_ERR(EFAULT);
+        }
+
+        DRM_COPY_FROM_USER_IOCTL(d_siz, (drm_via_cmdbuf_size_t *) data,
+                                 sizeof(d_siz));
+
+
+        count = 1000000;
+        tmp_size = d_siz.size;
+        switch(d_siz.func) {
+        case VIA_CMDBUF_SPACE:
+                while (((tmp_size = via_cmdbuf_space(dev_priv)) < d_siz.size) && count--) {
+                        if (!d_siz.wait) {
+                                break;
+                        }
+                }
+                if (!count) {
+                        DRM_ERROR("VIA_CMDBUF_SPACE timed out.\n");
+                        ret = DRM_ERR(EAGAIN);
+                }
+                break;
+        case VIA_CMDBUF_LAG:
+                while (((tmp_size = via_cmdbuf_lag(dev_priv)) > d_siz.size) && count--) {
+                        if (!d_siz.wait) {
+                                break;
+                        }
+                }
+                if (!count) {
+                        DRM_ERROR("VIA_CMDBUF_LAG timed out.\n");
+                        ret = DRM_ERR(EAGAIN);
+                }
+                break;
+        default:
+                ret = DRM_ERR(EFAULT);
+        }
+        d_siz.size = tmp_size;
+
+        DRM_COPY_TO_USER_IOCTL((drm_via_cmdbuf_size_t *) data, d_siz,
+                               sizeof(d_siz));
+        return ret;
+}
diff --git a/drivers/char/drm/via_drm.h b/drivers/char/drm/via_drm.h
new file mode 100644
index 000000000000..4588c9bd1816
--- /dev/null
+++ b/drivers/char/drm/via_drm.h
@@ -0,0 +1,243 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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 _VIA_DRM_H_
+#define _VIA_DRM_H_
+
+/* WARNING: These defines must be the same as what the Xserver uses.
+ * if you change them, you must change the defines in the Xserver.
+ */
+
+#ifndef _VIA_DEFINES_
+#define _VIA_DEFINES_
+
+#ifndef __KERNEL__
+#include "via_drmclient.h"
+#endif
+
+#define VIA_NR_SAREA_CLIPRECTS          8
+#define VIA_NR_XVMC_PORTS               10
+#define VIA_NR_XVMC_LOCKS               5
+#define VIA_MAX_CACHELINE_SIZE          64
+#define XVMCLOCKPTR(saPriv,lockNo)                                      \
+        ((volatile drm_hw_lock_t *)(((((unsigned long) (saPriv)->XvMCLockArea) + \
+                                      (VIA_MAX_CACHELINE_SIZE - 1)) &   \
+                                     ~(VIA_MAX_CACHELINE_SIZE - 1)) +   \
+                                    VIA_MAX_CACHELINE_SIZE*(lockNo)))
+
+/* Each region is a minimum of 64k, and there are at most 64 of them.
+ */
+#define VIA_NR_TEX_REGIONS 64
+#define VIA_LOG_MIN_TEX_REGION_SIZE 16
+#endif
+
+#define VIA_UPLOAD_TEX0IMAGE  0x1       /* handled clientside */
+#define VIA_UPLOAD_TEX1IMAGE  0x2       /* handled clientside */
+#define VIA_UPLOAD_CTX        0x4
+#define VIA_UPLOAD_BUFFERS    0x8
+#define VIA_UPLOAD_TEX0       0x10
+#define VIA_UPLOAD_TEX1       0x20
+#define VIA_UPLOAD_CLIPRECTS  0x40
+#define VIA_UPLOAD_ALL        0xff
+
+/* VIA specific ioctls */
+#define DRM_VIA_ALLOCMEM        0x00
+#define DRM_VIA_FREEMEM         0x01
+#define DRM_VIA_AGP_INIT        0x02
+#define DRM_VIA_FB_INIT         0x03
+#define DRM_VIA_MAP_INIT        0x04
+#define DRM_VIA_DEC_FUTEX       0x05
+#define NOT_USED
+#define DRM_VIA_DMA_INIT        0x07
+#define DRM_VIA_CMDBUFFER       0x08
+#define DRM_VIA_FLUSH           0x09
+#define DRM_VIA_PCICMD          0x0a
+#define DRM_VIA_CMDBUF_SIZE     0x0b
+#define NOT_USED
+#define DRM_VIA_WAIT_IRQ        0x0d
+
+#define DRM_IOCTL_VIA_ALLOCMEM    DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_ALLOCMEM, drm_via_mem_t)
+#define DRM_IOCTL_VIA_FREEMEM     DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_FREEMEM, drm_via_mem_t)
+#define DRM_IOCTL_VIA_AGP_INIT    DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_AGP_INIT, drm_via_agp_t)
+#define DRM_IOCTL_VIA_FB_INIT     DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_FB_INIT, drm_via_fb_t)
+#define DRM_IOCTL_VIA_MAP_INIT    DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_MAP_INIT, drm_via_init_t)
+#define DRM_IOCTL_VIA_DEC_FUTEX   DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_DEC_FUTEX, drm_via_futex_t)
+#define DRM_IOCTL_VIA_DMA_INIT    DRM_IOWR(DRM_COMMAND_BASE + DRM_VIA_DMA_INIT, drm_via_dma_init_t)
+#define DRM_IOCTL_VIA_CMDBUFFER   DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_CMDBUFFER, drm_via_cmdbuffer_t)
+#define DRM_IOCTL_VIA_FLUSH       DRM_IO(  DRM_COMMAND_BASE + DRM_VIA_FLUSH)
+#define DRM_IOCTL_VIA_PCICMD      DRM_IOW( DRM_COMMAND_BASE + DRM_VIA_PCICMD, drm_via_cmdbuffer_t)
+#define DRM_IOCTL_VIA_CMDBUF_SIZE DRM_IOWR( DRM_COMMAND_BASE + DRM_VIA_CMDBUF_SIZE, \
+                                            drm_via_cmdbuf_size_t)
+#define DRM_IOCTL_VIA_WAIT_IRQ    DRM_IOWR( DRM_COMMAND_BASE + DRM_VIA_WAIT_IRQ, drm_via_irqwait_t)
+
+/* Indices into buf.Setup where various bits of state are mirrored per
+ * context and per buffer.  These can be fired at the card as a unit,
+ * or in a piecewise fashion as required.
+ */
+
+#define VIA_TEX_SETUP_SIZE 8
+
+/* Flags for clear ioctl
+ */
+#define VIA_FRONT   0x1
+#define VIA_BACK    0x2
+#define VIA_DEPTH   0x4
+#define VIA_STENCIL 0x8
+#define VIDEO 0
+#define AGP 1
+typedef struct {
+        uint32_t offset;
+        uint32_t size;
+} drm_via_agp_t;
+
+typedef struct {
+        uint32_t offset;
+        uint32_t size;
+} drm_via_fb_t;
+
+typedef struct {
+        uint32_t context;
+        uint32_t type;
+        uint32_t size;
+        unsigned long index;
+        unsigned long offset;
+} drm_via_mem_t;
+
+typedef struct _drm_via_init {
+        enum {
+                VIA_INIT_MAP = 0x01,
+                VIA_CLEANUP_MAP = 0x02
+        } func;
+
+        unsigned long sarea_priv_offset;
+        unsigned long fb_offset;
+        unsigned long mmio_offset;
+        unsigned long agpAddr;
+} drm_via_init_t;
+
+typedef struct _drm_via_futex {
+        enum {
+                VIA_FUTEX_WAIT = 0x00,
+                VIA_FUTEX_WAKE = 0X01
+        } func;
+        uint32_t ms;
+        uint32_t lock;
+        uint32_t val;
+} drm_via_futex_t;
+
+typedef struct _drm_via_dma_init {
+        enum {
+                VIA_INIT_DMA = 0x01,
+                VIA_CLEANUP_DMA = 0x02,
+                VIA_DMA_INITIALIZED = 0x03
+        } func;
+
+        unsigned long offset;
+        unsigned long size;
+        unsigned long reg_pause_addr;
+} drm_via_dma_init_t;
+
+typedef struct _drm_via_cmdbuffer {
+        char *buf;
+        unsigned long size;
+} drm_via_cmdbuffer_t;
+
+/* Warning: If you change the SAREA structure you must change the Xserver
+ * structure as well */
+
+typedef struct _drm_via_tex_region {
+        unsigned char next, prev;       /* indices to form a circular LRU  */
+        unsigned char inUse;    /* owned by a client, or free? */
+        int age;                /* tracked by clients to update local LRU's */
+} drm_via_tex_region_t;
+
+typedef struct _drm_via_sarea {
+        unsigned int dirty;
+        unsigned int nbox;
+        drm_clip_rect_t boxes[VIA_NR_SAREA_CLIPRECTS];
+        drm_via_tex_region_t texList[VIA_NR_TEX_REGIONS + 1];
+        int texAge;             /* last time texture was uploaded */
+        int ctxOwner;           /* last context to upload state */
+        int vertexPrim;
+
+        /*
+         * Below is for XvMC.
+         * We want the lock integers alone on, and aligned to, a cache line.
+         * Therefore this somewhat strange construct.
+         */
+
+        char XvMCLockArea[VIA_MAX_CACHELINE_SIZE * (VIA_NR_XVMC_LOCKS + 1)];
+
+        unsigned int XvMCDisplaying[VIA_NR_XVMC_PORTS];
+        unsigned int XvMCSubPicOn[VIA_NR_XVMC_PORTS];
+        unsigned int XvMCCtxNoGrabbed;  /* Last context to hold decoder */
+
+} drm_via_sarea_t;
+
+typedef struct _drm_via_cmdbuf_size {
+        enum {
+                VIA_CMDBUF_SPACE = 0x01,
+                VIA_CMDBUF_LAG = 0x02
+        } func;
+        int wait;
+        uint32_t size;
+} drm_via_cmdbuf_size_t;
+
+typedef enum {
+        VIA_IRQ_ABSOLUTE = 0x0,
+        VIA_IRQ_RELATIVE = 0x1,
+        VIA_IRQ_SIGNAL = 0x10000000,
+        VIA_IRQ_FORCE_SEQUENCE = 0x20000000
+} via_irq_seq_type_t;
+
+#define VIA_IRQ_FLAGS_MASK 0xF0000000
+
+struct drm_via_wait_irq_request{
+        unsigned irq;
+        via_irq_seq_type_t type;
+        uint32_t sequence;
+        uint32_t signal;
+};
+
+typedef union drm_via_irqwait {
+        struct drm_via_wait_irq_request request;
+        struct drm_wait_vblank_reply reply;
+} drm_via_irqwait_t;
+
+#ifdef __KERNEL__
+
+int via_fb_init(DRM_IOCTL_ARGS);
+int via_mem_alloc(DRM_IOCTL_ARGS);
+int via_mem_free(DRM_IOCTL_ARGS);
+int via_agp_init(DRM_IOCTL_ARGS);
+int via_map_init(DRM_IOCTL_ARGS);
+int via_decoder_futex(DRM_IOCTL_ARGS);
+int via_dma_init(DRM_IOCTL_ARGS);
+int via_cmdbuffer(DRM_IOCTL_ARGS);
+int via_flush_ioctl(DRM_IOCTL_ARGS);
+int via_pci_cmdbuffer(DRM_IOCTL_ARGS);
+int via_cmdbuf_size(DRM_IOCTL_ARGS);
+int via_wait_irq(DRM_IOCTL_ARGS);
+
+#endif
+#endif                          /* _VIA_DRM_H_ */
diff --git a/drivers/char/drm/via_drv.c b/drivers/char/drm/via_drv.c
new file mode 100644
index 000000000000..275eefc79221
--- /dev/null
+++ b/drivers/char/drm/via_drv.c
@@ -0,0 +1,126 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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/config.h>
+#include "drmP.h"
+#include "via_drm.h"
+#include "via_drv.h"
+
+#include "drm_pciids.h"
+
+static int postinit(struct drm_device *dev, unsigned long flags)
+{
+        DRM_INFO("Initialized %s %d.%d.%d %s on minor %d: %s\n",
+                 DRIVER_NAME,
+                 DRIVER_MAJOR,
+                 DRIVER_MINOR,
+                 DRIVER_PATCHLEVEL,
+                 DRIVER_DATE, dev->primary.minor, pci_pretty_name(dev->pdev)
+            );
+        return 0;
+}
+
+static int version(drm_version_t * version)
+{
+        int len;
+
+        version->version_major = DRIVER_MAJOR;
+        version->version_minor = DRIVER_MINOR;
+        version->version_patchlevel = DRIVER_PATCHLEVEL;
+        DRM_COPY(version->name, DRIVER_NAME);
+        DRM_COPY(version->date, DRIVER_DATE);
+        DRM_COPY(version->desc, DRIVER_DESC);
+        return 0;
+}
+
+static struct pci_device_id pciidlist[] = {
+        viadrv_PCI_IDS
+};
+
+static drm_ioctl_desc_t ioctls[] = {
+        [DRM_IOCTL_NR(DRM_VIA_ALLOCMEM)] = {via_mem_alloc, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_FREEMEM)] = {via_mem_free, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_AGP_INIT)] = {via_agp_init, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_FB_INIT)] = {via_fb_init, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_MAP_INIT)] = {via_map_init, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_DEC_FUTEX)] = {via_decoder_futex, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_DMA_INIT)] = {via_dma_init, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_CMDBUFFER)] = {via_cmdbuffer, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_FLUSH)] = {via_flush_ioctl, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_PCICMD)] = {via_pci_cmdbuffer, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_CMDBUF_SIZE)] = {via_cmdbuf_size, 1, 0},
+        [DRM_IOCTL_NR(DRM_VIA_WAIT_IRQ)] = {via_wait_irq, 1, 0}
+};
+
+static struct drm_driver driver = {
+        .driver_features =
+            DRIVER_USE_AGP | DRIVER_USE_MTRR | DRIVER_HAVE_IRQ |
+            DRIVER_IRQ_SHARED | DRIVER_IRQ_VBL,
+        .context_ctor = via_init_context,
+        .context_dtor = via_final_context,
+        .vblank_wait = via_driver_vblank_wait,
+        .irq_preinstall = via_driver_irq_preinstall,
+        .irq_postinstall = via_driver_irq_postinstall,
+        .irq_uninstall = via_driver_irq_uninstall,
+        .irq_handler = via_driver_irq_handler,
+        .dma_quiescent = via_driver_dma_quiescent,
+        .reclaim_buffers = drm_core_reclaim_buffers,
+        .get_map_ofs = drm_core_get_map_ofs,
+        .get_reg_ofs = drm_core_get_reg_ofs,
+        .postinit = postinit,
+        .version = version,
+        .ioctls = ioctls,
+        .num_ioctls = DRM_ARRAY_SIZE(ioctls),
+        .fops = {
+                .owner = THIS_MODULE,
+                .open = drm_open,
+                .release = drm_release,
+                .ioctl = drm_ioctl,
+                .mmap = drm_mmap,
+                .poll = drm_poll,
+                .fasync = drm_fasync,
+                },
+        .pci_driver = {
+                .name = DRIVER_NAME,
+                .id_table = pciidlist,
+        }
+};
+
+static int __init via_init(void)
+{
+        via_init_command_verifier();
+        return drm_init(&driver);
+}
+
+static void __exit via_exit(void)
+{
+        drm_exit(&driver);
+}
+
+module_init(via_init);
+module_exit(via_exit);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/char/drm/via_drv.h b/drivers/char/drm/via_drv.h
new file mode 100644
index 000000000000..4eaa8b7c4c96
--- /dev/null
+++ b/drivers/char/drm/via_drv.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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 _VIA_DRV_H_
+#define _VIA_DRV_H_
+
+#define DRIVER_AUTHOR   "VIA"
+
+#define DRIVER_NAME             "via"
+#define DRIVER_DESC             "VIA Unichrome / Pro"
+#define DRIVER_DATE             "20050523"
+
+#define DRIVER_MAJOR            2
+#define DRIVER_MINOR            6
+#define DRIVER_PATCHLEVEL       3
+
+#include "via_verifier.h"
+
+#define VIA_PCI_BUF_SIZE 60000
+#define VIA_FIRE_BUF_SIZE  1024
+#define VIA_NUM_IRQS 2
+
+
+
+typedef struct drm_via_ring_buffer {
+        drm_map_t map;
+        char *virtual_start;
+} drm_via_ring_buffer_t;
+
+typedef uint32_t maskarray_t[5];
+
+typedef struct drm_via_irq {
+        atomic_t irq_received;
+        uint32_t pending_mask;
+        uint32_t enable_mask;
+        wait_queue_head_t irq_queue;
+} drm_via_irq_t;
+        
+typedef struct drm_via_private {
+        drm_via_sarea_t *sarea_priv;
+        drm_map_t *sarea;
+        drm_map_t *fb;
+        drm_map_t *mmio;
+        unsigned long agpAddr;
+        wait_queue_head_t decoder_queue[VIA_NR_XVMC_LOCKS];
+        char *dma_ptr;
+        unsigned int dma_low;
+        unsigned int dma_high;
+        unsigned int dma_offset;
+        uint32_t dma_wrap;
+        volatile uint32_t *last_pause_ptr;
+        volatile uint32_t *hw_addr_ptr;
+        drm_via_ring_buffer_t ring;
+        struct timeval last_vblank;
+        int last_vblank_valid;
+        unsigned usec_per_vblank;
+        drm_via_state_t hc_state;
+        char pci_buf[VIA_PCI_BUF_SIZE];
+        const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE];
+        uint32_t num_fire_offsets;
+        int pro_group_a;
+        drm_via_irq_t via_irqs[VIA_NUM_IRQS];
+        unsigned num_irqs;
+        maskarray_t *irq_masks;
+        uint32_t irq_enable_mask; 
+        uint32_t irq_pending_mask;      
+} drm_via_private_t;
+
+/* VIA MMIO register access */
+#define VIA_BASE ((dev_priv->mmio))
+
+#define VIA_READ(reg)           DRM_READ32(VIA_BASE, reg)
+#define VIA_WRITE(reg,val)      DRM_WRITE32(VIA_BASE, reg, val)
+#define VIA_READ8(reg)          DRM_READ8(VIA_BASE, reg)
+#define VIA_WRITE8(reg,val)     DRM_WRITE8(VIA_BASE, reg, val)
+
+extern int via_init_context(drm_device_t * dev, int context);
+extern int via_final_context(drm_device_t * dev, int context);
+
+extern int via_do_cleanup_map(drm_device_t * dev);
+extern int via_map_init(struct inode *inode, struct file *filp,
+                        unsigned int cmd, unsigned long arg);
+extern int via_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence);
+
+extern irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS);
+extern void via_driver_irq_preinstall(drm_device_t * dev);
+extern void via_driver_irq_postinstall(drm_device_t * dev);
+extern void via_driver_irq_uninstall(drm_device_t * dev);
+
+extern int via_dma_cleanup(drm_device_t * dev);
+extern void via_init_command_verifier(void);
+extern int via_driver_dma_quiescent(drm_device_t * dev);
+extern void via_init_futex(drm_via_private_t *dev_priv);
+extern void via_cleanup_futex(drm_via_private_t *dev_priv);
+extern void via_release_futex(drm_via_private_t *dev_priv, int context);
+
+
+#endif
diff --git a/drivers/char/drm/via_ds.c b/drivers/char/drm/via_ds.c
new file mode 100644
index 000000000000..daf3df75a20e
--- /dev/null
+++ b/drivers/char/drm/via_ds.c
@@ -0,0 +1,280 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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/module.h>
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/poll.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+
+#include "via_ds.h"
+extern unsigned int VIA_DEBUG;
+
+set_t *via_setInit(void)
+{
+        int i;
+        set_t *set;
+        set = (set_t *) drm_alloc(sizeof(set_t), DRM_MEM_DRIVER);
+        for (i = 0; i < SET_SIZE; i++) {
+                set->list[i].free_next = i + 1;
+                set->list[i].alloc_next = -1;
+        }
+        set->list[SET_SIZE - 1].free_next = -1;
+        set->free = 0;
+        set->alloc = -1;
+        set->trace = -1;
+        return set;
+}
+
+int via_setAdd(set_t * set, ITEM_TYPE item)
+{
+        int free = set->free;
+        if (free != -1) {
+                set->list[free].val = item;
+                set->free = set->list[free].free_next;
+        } else {
+                return 0;
+        }
+        set->list[free].alloc_next = set->alloc;
+        set->alloc = free;
+        set->list[free].free_next = -1;
+        return 1;
+}
+
+int via_setDel(set_t * set, ITEM_TYPE item)
+{
+        int alloc = set->alloc;
+        int prev = -1;
+
+        while (alloc != -1) {
+                if (set->list[alloc].val == item) {
+                        if (prev != -1)
+                                set->list[prev].alloc_next =
+                                    set->list[alloc].alloc_next;
+                        else
+                                set->alloc = set->list[alloc].alloc_next;
+                        break;
+                }
+                prev = alloc;
+                alloc = set->list[alloc].alloc_next;
+        }
+
+        if (alloc == -1)
+                return 0;
+
+        set->list[alloc].free_next = set->free;
+        set->free = alloc;
+        set->list[alloc].alloc_next = -1;
+
+        return 1;
+}
+
+/* setFirst -> setAdd -> setNext is wrong */
+
+int via_setFirst(set_t * set, ITEM_TYPE * item)
+{
+        if (set->alloc == -1)
+                return 0;
+
+        *item = set->list[set->alloc].val;
+        set->trace = set->list[set->alloc].alloc_next;
+
+        return 1;
+}
+
+int via_setNext(set_t * set, ITEM_TYPE * item)
+{
+        if (set->trace == -1)
+                return 0;
+
+        *item = set->list[set->trace].val;
+        set->trace = set->list[set->trace].alloc_next;
+
+        return 1;
+}
+
+int via_setDestroy(set_t * set)
+{
+        drm_free(set, sizeof(set_t), DRM_MEM_DRIVER);
+
+        return 1;
+}
+
+#define ISFREE(bptr) ((bptr)->free)
+
+#define fprintf(fmt, arg...) do{}while(0)
+
+memHeap_t *via_mmInit(int ofs, int size)
+{
+        PMemBlock blocks;
+
+        if (size <= 0)
+                return 0;
+
+        blocks = (TMemBlock *) drm_calloc(1, sizeof(TMemBlock), DRM_MEM_DRIVER);
+
+        if (blocks) {
+                blocks->ofs = ofs;
+                blocks->size = size;
+                blocks->free = 1;
+                return (memHeap_t *) blocks;
+        } else
+                return 0;
+}
+
+static TMemBlock *SliceBlock(TMemBlock * p,
+                             int startofs, int size,
+                             int reserved, int alignment)
+{
+        TMemBlock *newblock;
+
+        /* break left */
+        if (startofs > p->ofs) {
+                newblock =
+                    (TMemBlock *) drm_calloc(1, sizeof(TMemBlock),
+                                             DRM_MEM_DRIVER);
+                newblock->ofs = startofs;
+                newblock->size = p->size - (startofs - p->ofs);
+                newblock->free = 1;
+                newblock->next = p->next;
+                p->size -= newblock->size;
+                p->next = newblock;
+                p = newblock;
+        }
+
+        /* break right */
+        if (size < p->size) {
+                newblock =
+                    (TMemBlock *) drm_calloc(1, sizeof(TMemBlock),
+                                             DRM_MEM_DRIVER);
+                newblock->ofs = startofs + size;
+                newblock->size = p->size - size;
+                newblock->free = 1;
+                newblock->next = p->next;
+                p->size = size;
+                p->next = newblock;
+        }
+
+        /* p = middle block */
+        p->align = alignment;
+        p->free = 0;
+        p->reserved = reserved;
+        return p;
+}
+
+PMemBlock via_mmAllocMem(memHeap_t * heap, int size, int align2,
+                         int startSearch)
+{
+        int mask, startofs, endofs;
+        TMemBlock *p;
+
+        if (!heap || align2 < 0 || size <= 0)
+                return NULL;
+
+        mask = (1 << align2) - 1;
+        startofs = 0;
+        p = (TMemBlock *) heap;
+
+        while (p) {
+                if (ISFREE(p)) {
+                        startofs = (p->ofs + mask) & ~mask;
+
+                        if (startofs < startSearch)
+                                startofs = startSearch;
+
+                        endofs = startofs + size;
+
+                        if (endofs <= (p->ofs + p->size))
+                                break;
+                }
+
+                p = p->next;
+        }
+
+        if (!p)
+                return NULL;
+
+        p = SliceBlock(p, startofs, size, 0, mask + 1);
+        p->heap = heap;
+
+        return p;
+}
+
+static __inline__ int Join2Blocks(TMemBlock * p)
+{
+        if (p->free && p->next && p->next->free) {
+                TMemBlock *q = p->next;
+                p->size += q->size;
+                p->next = q->next;
+                drm_free(q, sizeof(TMemBlock), DRM_MEM_DRIVER);
+
+                return 1;
+        }
+
+        return 0;
+}
+
+int via_mmFreeMem(PMemBlock b)
+{
+        TMemBlock *p, *prev;
+
+        if (!b)
+                return 0;
+
+        if (!b->heap) {
+                fprintf(stderr, "no heap\n");
+
+                return -1;
+        }
+
+        p = b->heap;
+        prev = NULL;
+
+        while (p && p != b) {
+                prev = p;
+                p = p->next;
+        }
+
+        if (!p || p->free || p->reserved) {
+                if (!p)
+                        fprintf(stderr, "block not found in heap\n");
+                else if (p->free)
+                        fprintf(stderr, "block already free\n");
+                else
+                        fprintf(stderr, "block is reserved\n");
+
+                return -1;
+        }
+
+        p->free = 1;
+        Join2Blocks(p);
+
+        if (prev)
+                Join2Blocks(prev);
+
+        return 0;
+}
diff --git a/drivers/char/drm/via_ds.h b/drivers/char/drm/via_ds.h
new file mode 100644
index 000000000000..be9c7f9f1aee
--- /dev/null
+++ b/drivers/char/drm/via_ds.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ * Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
+ * All rights reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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 _via_ds_h_
+#define _via_ds_h_
+
+#include "drmP.h"
+
+/* Set Data Structure */
+#define SET_SIZE 5000
+typedef unsigned long ITEM_TYPE;
+
+typedef struct {
+        ITEM_TYPE val;
+        int alloc_next, free_next;
+} list_item_t;
+
+typedef struct {
+        int alloc;
+        int free;
+        int trace;
+        list_item_t list[SET_SIZE];
+} set_t;
+
+set_t *via_setInit(void);
+int via_setAdd(set_t * set, ITEM_TYPE item);
+int via_setDel(set_t * set, ITEM_TYPE item);
+int via_setFirst(set_t * set, ITEM_TYPE * item);
+int via_setNext(set_t * set, ITEM_TYPE * item);
+int via_setDestroy(set_t * set);
+
+#endif
+
+#ifndef MM_INC
+#define MM_INC
+
+struct mem_block_t {
+        struct mem_block_t *next;
+        struct mem_block_t *heap;
+        int ofs, size;
+        int align;
+        int free:1;
+        int reserved:1;
+};
+typedef struct mem_block_t TMemBlock;
+typedef struct mem_block_t *PMemBlock;
+
+/* a heap is just the first block in a chain */
+typedef struct mem_block_t memHeap_t;
+
+static __inline__ int mmBlockSize(PMemBlock b)
+{
+        return b->size;
+}
+
+static __inline__ int mmOffset(PMemBlock b)
+{
+        return b->ofs;
+}
+
+static __inline__ void mmMarkReserved(PMemBlock b)
+{
+        b->reserved = 1;
+}
+
+/*
+ * input: total size in bytes
+ * return: a heap pointer if OK, NULL if error
+ */
+memHeap_t *via_mmInit(int ofs, int size);
+
+PMemBlock via_mmAllocMem(memHeap_t * heap, int size, int align2,
+                         int startSearch);
+
+/*
+ * Free block starts at offset
+ * input: pointer to a block
+ * return: 0 if OK, -1 if error
+ */
+int via_mmFreeMem(PMemBlock b);
+
+#endif
diff --git a/drivers/char/drm/via_irq.c b/drivers/char/drm/via_irq.c
new file mode 100644
index 000000000000..e8027f3a93b0
--- /dev/null
+++ b/drivers/char/drm/via_irq.c
@@ -0,0 +1,339 @@
+/* via_irq.c
+ *
+ * Copyright 2004 BEAM Ltd.
+ * Copyright 2002 Tungsten Graphics, Inc.
+ * Copyright 2005 Thomas Hellstrom.
+ * All Rights Reserved.
+ *
+ * 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 (including the next
+ * paragraph) 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
+ * BEAM LTD, TUNGSTEN GRAPHICS  AND/OR ITS SUPPLIERS 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.
+ *
+ * Authors:
+ *    Terry Barnaby <terry1@beam.ltd.uk>
+ *    Keith Whitwell <keith@tungstengraphics.com>
+ *    Thomas Hellstrom <unichrome@shipmail.org>
+ *
+ * This code provides standard DRM access to the Via Unichrome / Pro Vertical blank
+ * interrupt, as well as an infrastructure to handle other interrupts of the chip.
+ * The refresh rate is also calculated for video playback sync purposes.
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "via_drm.h"
+#include "via_drv.h"
+
+#define VIA_REG_INTERRUPT       0x200
+
+/* VIA_REG_INTERRUPT */
+#define VIA_IRQ_GLOBAL          (1 << 31)
+#define VIA_IRQ_VBLANK_ENABLE   (1 << 19)
+#define VIA_IRQ_VBLANK_PENDING  (1 << 3)
+#define VIA_IRQ_HQV0_ENABLE     (1 << 11)
+#define VIA_IRQ_HQV1_ENABLE     (1 << 25)
+#define VIA_IRQ_HQV0_PENDING    (1 << 9)
+#define VIA_IRQ_HQV1_PENDING    (1 << 10)
+
+/*
+ * Device-specific IRQs go here. This type might need to be extended with
+ * the register if there are multiple IRQ control registers.
+ * Currently we activate the HQV interrupts of  Unichrome Pro group A. 
+ */
+
+static maskarray_t via_pro_group_a_irqs[] = {
+        {VIA_IRQ_HQV0_ENABLE, VIA_IRQ_HQV0_PENDING, 0x000003D0, 0x00008010, 0x00000000 },
+        {VIA_IRQ_HQV1_ENABLE, VIA_IRQ_HQV1_PENDING, 0x000013D0, 0x00008010, 0x00000000 }};
+static int via_num_pro_group_a = sizeof(via_pro_group_a_irqs)/sizeof(maskarray_t);
+
+static maskarray_t via_unichrome_irqs[] = {};
+static int via_num_unichrome = sizeof(via_unichrome_irqs)/sizeof(maskarray_t);
+
+
+static unsigned time_diff(struct timeval *now,struct timeval *then) 
+{
+    return (now->tv_usec >= then->tv_usec) ?
+        now->tv_usec - then->tv_usec :
+        1000000 - (then->tv_usec - now->tv_usec);
+}
+
+irqreturn_t via_driver_irq_handler(DRM_IRQ_ARGS)
+{
+        drm_device_t *dev = (drm_device_t *) arg;
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        u32 status;
+        int handled = 0;
+        struct timeval cur_vblank;
+        drm_via_irq_t *cur_irq = dev_priv->via_irqs;
+        int i;
+
+        status = VIA_READ(VIA_REG_INTERRUPT);
+        if (status & VIA_IRQ_VBLANK_PENDING) {
+                atomic_inc(&dev->vbl_received);
+                if (!(atomic_read(&dev->vbl_received) & 0x0F)) {
+                        do_gettimeofday(&cur_vblank);
+                        if (dev_priv->last_vblank_valid) {
+                                dev_priv->usec_per_vblank = 
+                                        time_diff( &cur_vblank,&dev_priv->last_vblank) >> 4;
+                        }
+                        dev_priv->last_vblank = cur_vblank;
+                        dev_priv->last_vblank_valid = 1;
+                }
+                if (!(atomic_read(&dev->vbl_received) & 0xFF)) {
+                        DRM_DEBUG("US per vblank is: %u\n",
+                                dev_priv->usec_per_vblank);
+                }
+                DRM_WAKEUP(&dev->vbl_queue);
+                drm_vbl_send_signals(dev);
+                handled = 1;
+        }
+        
+
+        for (i=0; i<dev_priv->num_irqs; ++i) {
+                if (status & cur_irq->pending_mask) {
+                        atomic_inc( &cur_irq->irq_received );
+                        DRM_WAKEUP( &cur_irq->irq_queue );
+                        handled = 1;
+                }
+                cur_irq++;
+        }
+        
+        /* Acknowlege interrupts */
+        VIA_WRITE(VIA_REG_INTERRUPT, status);
+
+
+        if (handled)
+                return IRQ_HANDLED;
+        else
+                return IRQ_NONE;
+}
+
+static __inline__ void viadrv_acknowledge_irqs(drm_via_private_t * dev_priv)
+{
+        u32 status;
+
+        if (dev_priv) {
+                /* Acknowlege interrupts */
+                status = VIA_READ(VIA_REG_INTERRUPT);
+                VIA_WRITE(VIA_REG_INTERRUPT, status | 
+                          dev_priv->irq_pending_mask);
+        }
+}
+
+int via_driver_vblank_wait(drm_device_t * dev, unsigned int *sequence)
+{
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        unsigned int cur_vblank;
+        int ret = 0;
+
+        DRM_DEBUG("viadrv_vblank_wait\n");
+        if (!dev_priv) {
+                DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
+                return -EINVAL;
+        }
+
+        viadrv_acknowledge_irqs(dev_priv);
+
+        /* Assume that the user has missed the current sequence number
+         * by about a day rather than she wants to wait for years
+         * using vertical blanks...
+         */
+
+        DRM_WAIT_ON(ret, dev->vbl_queue, 3 * DRM_HZ,
+                    (((cur_vblank = atomic_read(&dev->vbl_received)) -
+                      *sequence) <= (1 << 23)));
+        
+        *sequence = cur_vblank;
+        return ret;
+}
+
+static int 
+via_driver_irq_wait(drm_device_t * dev, unsigned int irq, int force_sequence,
+                    unsigned int *sequence)
+{
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        unsigned int cur_irq_sequence;
+        drm_via_irq_t *cur_irq = dev_priv->via_irqs;
+        int ret = 0;
+        maskarray_t *masks = dev_priv->irq_masks;
+
+        DRM_DEBUG("%s\n", __FUNCTION__);
+
+        if (!dev_priv) {
+                DRM_ERROR("%s called with no initialization\n", __FUNCTION__);
+                return DRM_ERR(EINVAL);
+        }
+
+        if (irq >= dev_priv->num_irqs ) {
+                DRM_ERROR("%s Trying to wait on unknown irq %d\n", __FUNCTION__, irq);
+                return DRM_ERR(EINVAL);
+        }
+                
+        cur_irq += irq;
+
+        if (masks[irq][2] && !force_sequence) {
+                DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ,
+                            ((VIA_READ(masks[irq][2]) & masks[irq][3]) == masks[irq][4]));
+                cur_irq_sequence = atomic_read(&cur_irq->irq_received);
+        } else {
+                DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * DRM_HZ,
+                            (((cur_irq_sequence = atomic_read(&cur_irq->irq_received)) -
+                              *sequence) <= (1 << 23)));                
+        }
+        *sequence = cur_irq_sequence;
+        return ret;
+}
+
+
+/*
+ * drm_dma.h hooks
+ */
+
+void via_driver_irq_preinstall(drm_device_t * dev)
+{
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        u32 status;
+        drm_via_irq_t *cur_irq = dev_priv->via_irqs;
+        int i;
+
+        DRM_DEBUG("driver_irq_preinstall: dev_priv: %p\n", dev_priv);
+        if (dev_priv) {
+
+                dev_priv->irq_enable_mask = VIA_IRQ_VBLANK_ENABLE;
+                dev_priv->irq_pending_mask = VIA_IRQ_VBLANK_PENDING;
+
+                dev_priv->irq_masks = (dev_priv->pro_group_a) ?
+                        via_pro_group_a_irqs : via_unichrome_irqs;
+                dev_priv->num_irqs = (dev_priv->pro_group_a) ?
+                        via_num_pro_group_a : via_num_unichrome;
+                
+                for(i=0; i < dev_priv->num_irqs; ++i) {
+                        atomic_set(&cur_irq->irq_received, 0);
+                        cur_irq->enable_mask = dev_priv->irq_masks[i][0]; 
+                        cur_irq->pending_mask = dev_priv->irq_masks[i][1];
+                        DRM_INIT_WAITQUEUE( &cur_irq->irq_queue );
+                        dev_priv->irq_enable_mask |= cur_irq->enable_mask;
+                        dev_priv->irq_pending_mask |= cur_irq->pending_mask;
+                        cur_irq++;
+                        
+                        DRM_DEBUG("Initializing IRQ %d\n", i);
+                }
+                        
+                dev_priv->last_vblank_valid = 0;
+
+                // Clear VSync interrupt regs
+                status = VIA_READ(VIA_REG_INTERRUPT);
+                VIA_WRITE(VIA_REG_INTERRUPT, status & 
+                          ~(dev_priv->irq_enable_mask));
+                
+                /* Clear bits if they're already high */
+                viadrv_acknowledge_irqs(dev_priv);
+        }
+}
+
+void via_driver_irq_postinstall(drm_device_t * dev)
+{
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        u32 status;
+
+        DRM_DEBUG("via_driver_irq_postinstall\n");
+        if (dev_priv) {
+                status = VIA_READ(VIA_REG_INTERRUPT);
+                VIA_WRITE(VIA_REG_INTERRUPT, status | VIA_IRQ_GLOBAL
+                          | dev_priv->irq_enable_mask);
+
+                /* Some magic, oh for some data sheets ! */
+
+                VIA_WRITE8(0x83d4, 0x11);
+                VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) | 0x30);
+                
+        }
+}
+
+void via_driver_irq_uninstall(drm_device_t * dev)
+{
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        u32 status;
+
+        DRM_DEBUG("driver_irq_uninstall)\n");
+        if (dev_priv) {
+
+                /* Some more magic, oh for some data sheets ! */
+
+                VIA_WRITE8(0x83d4, 0x11);
+                VIA_WRITE8(0x83d5, VIA_READ8(0x83d5) & ~0x30);
+
+                status = VIA_READ(VIA_REG_INTERRUPT);
+                VIA_WRITE(VIA_REG_INTERRUPT, status & 
+                          ~(VIA_IRQ_VBLANK_ENABLE | dev_priv->irq_enable_mask));
+        }
+}
+
+int via_wait_irq(DRM_IOCTL_ARGS)
+{
+        drm_file_t *priv = filp->private_data;
+        drm_device_t *dev = priv->head->dev;
+        drm_via_irqwait_t __user *argp = (void __user *)data;
+        drm_via_irqwait_t irqwait;
+        struct timeval now;
+        int ret = 0;
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        drm_via_irq_t *cur_irq = dev_priv->via_irqs;
+        int force_sequence;
+
+        if (!dev->irq)
+                return DRM_ERR(EINVAL);
+
+        DRM_COPY_FROM_USER_IOCTL(irqwait, argp, sizeof(irqwait));
+        if (irqwait.request.irq >= dev_priv->num_irqs) {
+                DRM_ERROR("%s Trying to wait on unknown irq %d\n", __FUNCTION__, 
+                          irqwait.request.irq);
+                return DRM_ERR(EINVAL);
+        }
+
+        cur_irq += irqwait.request.irq;
+
+        switch (irqwait.request.type & ~VIA_IRQ_FLAGS_MASK) {
+        case VIA_IRQ_RELATIVE:
+                irqwait.request.sequence += atomic_read(&cur_irq->irq_received);
+                irqwait.request.type &= ~_DRM_VBLANK_RELATIVE;
+        case VIA_IRQ_ABSOLUTE:
+                break;
+        default:
+                return DRM_ERR(EINVAL);
+        }
+
+        if (irqwait.request.type & VIA_IRQ_SIGNAL) {
+                DRM_ERROR("%s Signals on Via IRQs not implemented yet.\n", 
+                          __FUNCTION__);
+                return DRM_ERR(EINVAL);
+        }
+
+        force_sequence = (irqwait.request.type & VIA_IRQ_FORCE_SEQUENCE);
+
+        ret = via_driver_irq_wait(dev, irqwait.request.irq, force_sequence,
+                                  &irqwait.request.sequence);
+        do_gettimeofday(&now);
+        irqwait.reply.tval_sec = now.tv_sec;
+        irqwait.reply.tval_usec = now.tv_usec;
+
+        DRM_COPY_TO_USER_IOCTL(argp, irqwait, sizeof(irqwait));
+
+        return ret;
+}
diff --git a/drivers/char/drm/via_map.c b/drivers/char/drm/via_map.c
new file mode 100644
index 000000000000..0be829b6ec65
--- /dev/null
+++ b/drivers/char/drm/via_map.c
@@ -0,0 +1,110 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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 "drmP.h"
+#include "via_drm.h"
+#include "via_drv.h"
+
+static int via_do_init_map(drm_device_t * dev, drm_via_init_t * init)
+{
+        drm_via_private_t *dev_priv;
+
+        DRM_DEBUG("%s\n", __FUNCTION__);
+
+        dev_priv = drm_alloc(sizeof(drm_via_private_t), DRM_MEM_DRIVER);
+        if (dev_priv == NULL)
+                return -ENOMEM;
+
+        memset(dev_priv, 0, sizeof(drm_via_private_t));
+
+        DRM_GETSAREA();
+        if (!dev_priv->sarea) {
+                DRM_ERROR("could not find sarea!\n");
+                dev->dev_private = (void *)dev_priv;
+                via_do_cleanup_map(dev);
+                return -EINVAL;
+        }
+
+        dev_priv->fb = drm_core_findmap(dev, init->fb_offset);
+        if (!dev_priv->fb) {
+                DRM_ERROR("could not find framebuffer!\n");
+                dev->dev_private = (void *)dev_priv;
+                via_do_cleanup_map(dev);
+                return -EINVAL;
+        }
+        dev_priv->mmio = drm_core_findmap(dev, init->mmio_offset);
+        if (!dev_priv->mmio) {
+                DRM_ERROR("could not find mmio region!\n");
+                dev->dev_private = (void *)dev_priv;
+                via_do_cleanup_map(dev);
+                return -EINVAL;
+        }
+
+        dev_priv->sarea_priv =
+            (drm_via_sarea_t *) ((u8 *) dev_priv->sarea->handle +
+                                 init->sarea_priv_offset);
+
+        dev_priv->agpAddr = init->agpAddr;
+
+        via_init_futex( dev_priv );
+        dev_priv->pro_group_a = (dev->pdev->device == 0x3118);
+
+        dev->dev_private = (void *)dev_priv;
+        return 0;
+}
+
+int via_do_cleanup_map(drm_device_t * dev)
+{
+        if (dev->dev_private) {
+
+                drm_via_private_t *dev_priv = dev->dev_private;
+
+                via_dma_cleanup(dev);
+
+                drm_free(dev_priv, sizeof(drm_via_private_t), DRM_MEM_DRIVER);
+                dev->dev_private = NULL;
+        }
+
+        return 0;
+}
+
+int via_map_init(DRM_IOCTL_ARGS)
+{
+        DRM_DEVICE;
+        drm_via_init_t init;
+
+        DRM_DEBUG("%s\n", __FUNCTION__);
+
+        DRM_COPY_FROM_USER_IOCTL(init, (drm_via_init_t *) data, sizeof(init));
+
+        switch (init.func) {
+        case VIA_INIT_MAP:
+                return via_do_init_map(dev, &init);
+        case VIA_CLEANUP_MAP:
+                return via_do_cleanup_map(dev);
+        }
+
+        return -EINVAL;
+}
+
+
diff --git a/drivers/char/drm/via_mm.c b/drivers/char/drm/via_mm.c
new file mode 100644
index 000000000000..c22712f44d42
--- /dev/null
+++ b/drivers/char/drm/via_mm.c
@@ -0,0 +1,358 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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 "drmP.h"
+#include "via_drm.h"
+#include "via_drv.h"
+#include "via_ds.h"
+#include "via_mm.h"
+
+#define MAX_CONTEXT 100
+
+typedef struct {
+        int used;
+        int context;
+        set_t *sets[2];         /* 0 for frame buffer, 1 for AGP , 2 for System */
+} via_context_t;
+
+static via_context_t global_ppriv[MAX_CONTEXT];
+
+static int via_agp_alloc(drm_via_mem_t * mem);
+static int via_agp_free(drm_via_mem_t * mem);
+static int via_fb_alloc(drm_via_mem_t * mem);
+static int via_fb_free(drm_via_mem_t * mem);
+
+static int add_alloc_set(int context, int type, unsigned int val)
+{
+        int i, retval = 0;
+
+        for (i = 0; i < MAX_CONTEXT; i++) {
+                if (global_ppriv[i].used && global_ppriv[i].context == context) {
+                        retval = via_setAdd(global_ppriv[i].sets[type], val);
+                        break;
+                }
+        }
+
+        return retval;
+}
+
+static int del_alloc_set(int context, int type, unsigned int val)
+{
+        int i, retval = 0;
+
+        for (i = 0; i < MAX_CONTEXT; i++)
+                if (global_ppriv[i].used && global_ppriv[i].context == context) {
+                        retval = via_setDel(global_ppriv[i].sets[type], val);
+                        break;
+                }
+
+        return retval;
+}
+
+/* agp memory management */
+static memHeap_t *AgpHeap = NULL;
+
+int via_agp_init(DRM_IOCTL_ARGS)
+{
+        drm_via_agp_t agp;
+
+        DRM_COPY_FROM_USER_IOCTL(agp, (drm_via_agp_t *) data, sizeof(agp));
+
+        AgpHeap = via_mmInit(agp.offset, agp.size);
+
+        DRM_DEBUG("offset = %lu, size = %lu", (unsigned long)agp.offset, (unsigned long)agp.size);
+
+        return 0;
+}
+
+/* fb memory management */
+static memHeap_t *FBHeap = NULL;
+
+int via_fb_init(DRM_IOCTL_ARGS)
+{
+        drm_via_fb_t fb;
+
+        DRM_COPY_FROM_USER_IOCTL(fb, (drm_via_fb_t *) data, sizeof(fb));
+
+        FBHeap = via_mmInit(fb.offset, fb.size);
+
+        DRM_DEBUG("offset = %lu, size = %lu", (unsigned long)fb.offset, (unsigned long)fb.size);
+
+        return 0;
+}
+
+int via_init_context(struct drm_device *dev, int context)
+{
+        int i;
+
+        for (i = 0; i < MAX_CONTEXT; i++)
+                if (global_ppriv[i].used &&
+                    (global_ppriv[i].context == context))
+                        break;
+
+        if (i >= MAX_CONTEXT) {
+                for (i = 0; i < MAX_CONTEXT; i++) {
+                        if (!global_ppriv[i].used) {
+                                global_ppriv[i].context = context;
+                                global_ppriv[i].used = 1;
+                                global_ppriv[i].sets[0] = via_setInit();
+                                global_ppriv[i].sets[1] = via_setInit();
+                                DRM_DEBUG("init allocation set, socket=%d,"
+                                          " context = %d\n", i, context);
+                                break;
+                        }
+                }
+
+                if ((i >= MAX_CONTEXT) || (global_ppriv[i].sets[0] == NULL) ||
+                    (global_ppriv[i].sets[1] == NULL)) {
+                        return 0;
+                }
+        }
+
+        return 1;
+}
+
+int via_final_context(struct drm_device *dev, int context)
+{       
+        int i;
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+
+        for (i = 0; i < MAX_CONTEXT; i++)
+                if (global_ppriv[i].used &&
+                    (global_ppriv[i].context == context))
+                        break;
+
+        if (i < MAX_CONTEXT) {
+                set_t *set;
+                ITEM_TYPE item;
+                int retval;
+
+                DRM_DEBUG("find socket %d, context = %d\n", i, context);
+
+                /* Video Memory */
+                set = global_ppriv[i].sets[0];
+                retval = via_setFirst(set, &item);
+                while (retval) {
+                        DRM_DEBUG("free video memory 0x%lx\n", item);
+                        via_mmFreeMem((PMemBlock) item);
+                        retval = via_setNext(set, &item);
+                }
+                via_setDestroy(set);
+
+                /* AGP Memory */
+                set = global_ppriv[i].sets[1];
+                retval = via_setFirst(set, &item);
+                while (retval) {
+                        DRM_DEBUG("free agp memory 0x%lx\n", item);
+                        via_mmFreeMem((PMemBlock) item);
+                        retval = via_setNext(set, &item);
+                }
+                via_setDestroy(set);
+                global_ppriv[i].used = 0;
+        }
+        via_release_futex(dev_priv, context); 
+        
+                        
+#if defined(__linux__)
+        /* Linux specific until context tracking code gets ported to BSD */
+        /* Last context, perform cleanup */
+        if (dev->ctx_count == 1 && dev->dev_private) {
+                DRM_DEBUG("Last Context\n");
+                if (dev->irq)
+                        drm_irq_uninstall(dev);
+
+                via_cleanup_futex(dev_priv);
+                via_do_cleanup_map(dev);
+        }
+#endif
+
+        return 1;
+}
+
+int via_mem_alloc(DRM_IOCTL_ARGS)
+{
+        drm_via_mem_t mem;
+
+        DRM_COPY_FROM_USER_IOCTL(mem, (drm_via_mem_t *) data, sizeof(mem));
+
+        switch (mem.type) {
+        case VIDEO:
+                if (via_fb_alloc(&mem) < 0)
+                        return -EFAULT;
+                DRM_COPY_TO_USER_IOCTL((drm_via_mem_t *) data, mem,
+                                       sizeof(mem));
+                return 0;
+        case AGP:
+                if (via_agp_alloc(&mem) < 0)
+                        return -EFAULT;
+                DRM_COPY_TO_USER_IOCTL((drm_via_mem_t *) data, mem,
+                                       sizeof(mem));
+                return 0;
+        }
+
+        return -EFAULT;
+}
+
+static int via_fb_alloc(drm_via_mem_t * mem)
+{
+        drm_via_mm_t fb;
+        PMemBlock block;
+        int retval = 0;
+
+        if (!FBHeap)
+                return -1;
+
+        fb.size = mem->size;
+        fb.context = mem->context;
+
+        block = via_mmAllocMem(FBHeap, fb.size, 5, 0);
+        if (block) {
+                fb.offset = block->ofs;
+                fb.free = (unsigned long)block;
+                if (!add_alloc_set(fb.context, VIDEO, fb.free)) {
+                        DRM_DEBUG("adding to allocation set fails\n");
+                        via_mmFreeMem((PMemBlock) fb.free);
+                        retval = -1;
+                }
+        } else {
+                fb.offset = 0;
+                fb.size = 0;
+                fb.free = 0;
+                retval = -1;
+        }
+
+        mem->offset = fb.offset;
+        mem->index = fb.free;
+
+        DRM_DEBUG("alloc fb, size = %d, offset = %d\n", fb.size,
+                  (int)fb.offset);
+
+        return retval;
+}
+
+static int via_agp_alloc(drm_via_mem_t * mem)
+{
+        drm_via_mm_t agp;
+        PMemBlock block;
+        int retval = 0;
+
+        if (!AgpHeap)
+                return -1;
+
+        agp.size = mem->size;
+        agp.context = mem->context;
+
+        block = via_mmAllocMem(AgpHeap, agp.size, 5, 0);
+        if (block) {
+                agp.offset = block->ofs;
+                agp.free = (unsigned long)block;
+                if (!add_alloc_set(agp.context, AGP, agp.free)) {
+                        DRM_DEBUG("adding to allocation set fails\n");
+                        via_mmFreeMem((PMemBlock) agp.free);
+                        retval = -1;
+                }
+        } else {
+                agp.offset = 0;
+                agp.size = 0;
+                agp.free = 0;
+        }
+
+        mem->offset = agp.offset;
+        mem->index = agp.free;
+
+        DRM_DEBUG("alloc agp, size = %d, offset = %d\n", agp.size,
+                  (unsigned int)agp.offset);
+        return retval;
+}
+
+int via_mem_free(DRM_IOCTL_ARGS)
+{
+        drm_via_mem_t mem;
+
+        DRM_COPY_FROM_USER_IOCTL(mem, (drm_via_mem_t *) data, sizeof(mem));
+
+        switch (mem.type) {
+
+        case VIDEO:
+                if (via_fb_free(&mem) == 0)
+                        return 0;
+                break;
+        case AGP:
+                if (via_agp_free(&mem) == 0)
+                        return 0;
+                break;
+        }
+
+        return -EFAULT;
+}
+
+static int via_fb_free(drm_via_mem_t * mem)
+{
+        drm_via_mm_t fb;
+        int retval = 0;
+
+        if (!FBHeap) {
+                return -1;
+        }
+
+        fb.free = mem->index;
+        fb.context = mem->context;
+
+        if (!fb.free) {
+                return -1;
+
+        }
+
+        via_mmFreeMem((PMemBlock) fb.free);
+
+        if (!del_alloc_set(fb.context, VIDEO, fb.free)) {
+                retval = -1;
+        }
+
+        DRM_DEBUG("free fb, free = %ld\n", fb.free);
+
+        return retval;
+}
+
+static int via_agp_free(drm_via_mem_t * mem)
+{
+        drm_via_mm_t agp;
+
+        int retval = 0;
+
+        agp.free = mem->index;
+        agp.context = mem->context;
+
+        if (!agp.free)
+                return -1;
+
+        via_mmFreeMem((PMemBlock) agp.free);
+
+        if (!del_alloc_set(agp.context, AGP, agp.free)) {
+                retval = -1;
+        }
+
+        DRM_DEBUG("free agp, free = %ld\n", agp.free);
+
+        return retval;
+}
diff --git a/drivers/char/drm/via_mm.h b/drivers/char/drm/via_mm.h
new file mode 100644
index 000000000000..d57efda57c76
--- /dev/null
+++ b/drivers/char/drm/via_mm.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
+ * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS 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 _via_drm_mm_h_
+#define _via_drm_mm_h_
+
+typedef struct {
+        unsigned int context;
+        unsigned int size;
+        unsigned long offset;
+        unsigned long free;
+} drm_via_mm_t;
+
+typedef struct {
+        unsigned int size;
+        unsigned long handle;
+        void *virtual;
+} drm_via_dma_t;
+
+#endif
diff --git a/drivers/char/drm/via_verifier.c b/drivers/char/drm/via_verifier.c
new file mode 100644
index 000000000000..07923b0c7a97
--- /dev/null
+++ b/drivers/char/drm/via_verifier.c
@@ -0,0 +1,1061 @@
+/*
+ * Copyright 2004 The Unichrome Project. All Rights Reserved.
+ * Copyright 2005 Thomas Hellstrom. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S), AND/OR THE COPYRIGHT HOLDER(S) 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.
+ *
+ * Author: Thomas Hellstrom 2004, 2005.
+ * This code was written using docs obtained under NDA from VIA Inc.
+ *
+ * Don't run this code directly on an AGP buffer. Due to cache problems it will
+ * be very slow.
+ */
+
+
+#include "via_3d_reg.h"
+#include "drmP.h"
+#include "drm.h"
+#include "via_drm.h"
+#include "via_verifier.h"
+#include "via_drv.h"
+
+typedef enum{
+        state_command,
+        state_header2,
+        state_header1,
+        state_vheader5,
+        state_vheader6,
+        state_error
+} verifier_state_t;
+
+
+typedef enum{
+        no_check = 0,
+        check_for_header2,
+        check_for_header1,
+        check_for_header2_err,
+        check_for_header1_err,
+        check_for_fire,
+        check_z_buffer_addr0,
+        check_z_buffer_addr1,
+        check_z_buffer_addr_mode,
+        check_destination_addr0,
+        check_destination_addr1,
+        check_destination_addr_mode,
+        check_for_dummy,
+        check_for_dd,
+        check_texture_addr0,
+        check_texture_addr1,
+        check_texture_addr2,
+        check_texture_addr3,
+        check_texture_addr4,
+        check_texture_addr5,
+        check_texture_addr6,
+        check_texture_addr7,
+        check_texture_addr8,
+        check_texture_addr_mode,
+        check_for_vertex_count,
+        check_number_texunits,
+        forbidden_command
+}hazard_t;
+
+/*
+ * Associates each hazard above with a possible multi-command
+ * sequence. For example an address that is split over multiple
+ * commands and that needs to be checked at the first command 
+ * that does not include any part of the address.
+ */
+
+static drm_via_sequence_t seqs[] = { 
+        no_sequence,
+        no_sequence,
+        no_sequence,
+        no_sequence,
+        no_sequence,
+        no_sequence,
+        z_address,
+        z_address,
+        z_address,
+        dest_address,
+        dest_address,
+        dest_address,
+        no_sequence,
+        no_sequence,
+        tex_address,
+        tex_address,
+        tex_address,
+        tex_address,
+        tex_address,
+        tex_address,
+        tex_address,
+        tex_address,
+        tex_address,
+        tex_address,
+        no_sequence
+};
+    
+typedef struct{
+        unsigned int code;
+        hazard_t hz;
+} hz_init_t;
+
+
+
+static hz_init_t init_table1[] = {
+        {0xf2, check_for_header2_err},
+        {0xf0, check_for_header1_err},
+        {0xee, check_for_fire},
+        {0xcc, check_for_dummy},
+        {0xdd, check_for_dd},
+        {0x00, no_check},
+        {0x10, check_z_buffer_addr0},
+        {0x11, check_z_buffer_addr1},
+        {0x12, check_z_buffer_addr_mode},
+        {0x13, no_check},
+        {0x14, no_check},
+        {0x15, no_check},
+        {0x23, no_check},
+        {0x24, no_check},
+        {0x33, no_check},
+        {0x34, no_check},
+        {0x35, no_check},
+        {0x36, no_check},
+        {0x37, no_check},
+        {0x38, no_check},
+        {0x39, no_check},
+        {0x3A, no_check},
+        {0x3B, no_check},
+        {0x3C, no_check},
+        {0x3D, no_check},
+        {0x3E, no_check},
+        {0x40, check_destination_addr0},
+        {0x41, check_destination_addr1},
+        {0x42, check_destination_addr_mode},
+        {0x43, no_check},
+        {0x44, no_check},
+        {0x50, no_check},
+        {0x51, no_check},
+        {0x52, no_check},
+        {0x53, no_check},
+        {0x54, no_check},
+        {0x55, no_check},
+        {0x56, no_check},
+        {0x57, no_check},
+        {0x58, no_check},
+        {0x70, no_check},
+        {0x71, no_check},
+        {0x78, no_check},
+        {0x79, no_check},
+        {0x7A, no_check},
+        {0x7B, no_check},
+        {0x7C, no_check},
+        {0x7D, check_for_vertex_count}
+};
+
+   
+                       
+static hz_init_t init_table2[] = {
+        {0xf2, check_for_header2_err},
+        {0xf0, check_for_header1_err},
+        {0xee, check_for_fire},
+        {0xcc, check_for_dummy},
+        {0x00, check_texture_addr0},
+        {0x01, check_texture_addr0},
+        {0x02, check_texture_addr0},
+        {0x03, check_texture_addr0},
+        {0x04, check_texture_addr0},
+        {0x05, check_texture_addr0},
+        {0x06, check_texture_addr0},
+        {0x07, check_texture_addr0},
+        {0x08, check_texture_addr0},
+        {0x09, check_texture_addr0},
+        {0x20, check_texture_addr1},
+        {0x21, check_texture_addr1},
+        {0x22, check_texture_addr1},
+        {0x23, check_texture_addr4},
+        {0x2B, check_texture_addr3},
+        {0x2C, check_texture_addr3},
+        {0x2D, check_texture_addr3},
+        {0x2E, check_texture_addr3},
+        {0x2F, check_texture_addr3},
+        {0x30, check_texture_addr3},
+        {0x31, check_texture_addr3},
+        {0x32, check_texture_addr3},
+        {0x33, check_texture_addr3},
+        {0x34, check_texture_addr3},
+        {0x4B, check_texture_addr5},
+        {0x4C, check_texture_addr6},
+        {0x51, check_texture_addr7},
+        {0x52, check_texture_addr8},
+        {0x77, check_texture_addr2},
+        {0x78, no_check},
+        {0x79, no_check},
+        {0x7A, no_check},
+        {0x7B, check_texture_addr_mode},
+        {0x7C, no_check},
+        {0x7D, no_check},
+        {0x7E, no_check},
+        {0x7F, no_check},
+        {0x80, no_check},
+        {0x81, no_check},
+        {0x82, no_check},
+        {0x83, no_check},
+        {0x85, no_check},
+        {0x86, no_check},
+        {0x87, no_check},
+        {0x88, no_check},
+        {0x89, no_check},
+        {0x8A, no_check},
+        {0x90, no_check},
+        {0x91, no_check},
+        {0x92, no_check},
+        {0x93, no_check}
+};
+
+static hz_init_t init_table3[] = {
+        {0xf2, check_for_header2_err},
+        {0xf0, check_for_header1_err},
+        {0xcc, check_for_dummy},
+        {0x00, check_number_texunits}
+};
+   
+                       
+static hazard_t table1[256]; 
+static hazard_t table2[256]; 
+static hazard_t table3[256]; 
+
+
+
+static __inline__ int
+eat_words(const uint32_t **buf, const uint32_t *buf_end, unsigned num_words)
+{
+        if ((*buf - buf_end) >= num_words) {
+                *buf += num_words;
+                return 0;
+        } 
+        DRM_ERROR("Illegal termination of DMA command buffer\n");
+        return 1;
+}
+
+
+/*
+ * Partially stolen from drm_memory.h
+ */
+
+static __inline__ drm_map_t *
+via_drm_lookup_agp_map (drm_via_state_t *seq, unsigned long offset, unsigned long size, 
+                        drm_device_t *dev)
+{
+        struct list_head *list;
+        drm_map_list_t *r_list;
+        drm_map_t *map = seq->map_cache;
+
+        if (map && map->offset <= offset && (offset + size) <= (map->offset + map->size)) {
+                return map;
+        }
+                
+        list_for_each(list, &dev->maplist->head) {
+                r_list = (drm_map_list_t *) list;
+                map = r_list->map;
+                if (!map)
+                        continue;
+                if (map->offset <= offset && (offset + size) <= (map->offset + map->size) && 
+                    !(map->flags & _DRM_RESTRICTED) && (map->type == _DRM_AGP)) {
+                        seq->map_cache = map;
+                        return map;
+                }
+        }
+        return NULL;
+}
+
+
+/*
+ * Require that all AGP texture levels reside in the same AGP map which should 
+ * be mappable by the client. This is not a big restriction.
+ * FIXME: To actually enforce this security policy strictly, drm_rmmap 
+ * would have to wait for dma quiescent before removing an AGP map. 
+ * The via_drm_lookup_agp_map call in reality seems to take
+ * very little CPU time.
+ */
+
+
+static __inline__ int
+finish_current_sequence(drm_via_state_t *cur_seq) 
+{
+        switch(cur_seq->unfinished) {
+        case z_address:
+                DRM_DEBUG("Z Buffer start address is 0x%x\n", cur_seq->z_addr);
+                break;
+        case dest_address:
+                DRM_DEBUG("Destination start address is 0x%x\n", cur_seq->d_addr);
+                break;
+        case tex_address:
+                if (cur_seq->agp_texture) {                      
+                        unsigned start = cur_seq->tex_level_lo[cur_seq->texture];
+                        unsigned end = cur_seq->tex_level_hi[cur_seq->texture];
+                        unsigned long lo=~0, hi=0, tmp;
+                        uint32_t *addr, *pitch, *height, tex;
+                        unsigned i;
+
+                        if (end > 9) end = 9;
+                        if (start > 9) start = 9;
+
+                        addr =&(cur_seq->t_addr[tex = cur_seq->texture][start]);
+                        pitch = &(cur_seq->pitch[tex][start]);
+                        height = &(cur_seq->height[tex][start]);
+
+                        for (i=start; i<= end; ++i) {
+                                tmp = *addr++;
+                                if (tmp < lo) lo = tmp;
+                                tmp += (*height++ << *pitch++);
+                                if (tmp > hi) hi = tmp;
+                        }
+
+                        if (! via_drm_lookup_agp_map (cur_seq, lo, hi - lo, cur_seq->dev)) {
+                                DRM_ERROR("AGP texture is not in allowed map\n");
+                                return 2;
+                        }
+                }       
+                break;
+        default:
+                break;
+        }
+        cur_seq->unfinished = no_sequence;
+        return 0;
+}
+
+static __inline__ int 
+investigate_hazard( uint32_t cmd, hazard_t hz, drm_via_state_t *cur_seq)
+{
+        register uint32_t tmp, *tmp_addr;
+
+        if (cur_seq->unfinished && (cur_seq->unfinished != seqs[hz])) {
+                int ret;
+                if ((ret = finish_current_sequence(cur_seq))) return ret;
+        }
+
+        switch(hz) {
+        case check_for_header2:
+                if (cmd == HALCYON_HEADER2) return 1;
+                return 0;
+        case check_for_header1:
+                if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) return 1;
+                return 0;
+        case check_for_header2_err:
+                if (cmd == HALCYON_HEADER2) return 1;
+                DRM_ERROR("Illegal DMA HALCYON_HEADER2 command\n");
+                break;
+        case check_for_header1_err:
+                if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) return 1;
+                DRM_ERROR("Illegal DMA HALCYON_HEADER1 command\n");
+                break;
+        case check_for_fire:
+                if ((cmd & HALCYON_FIREMASK) == HALCYON_FIRECMD) return 1; 
+                DRM_ERROR("Illegal DMA HALCYON_FIRECMD command\n");
+                break;
+        case check_for_dummy:
+                if (HC_DUMMY == cmd) return 0;
+                DRM_ERROR("Illegal DMA HC_DUMMY command\n");
+                break;
+        case check_for_dd:
+                if (0xdddddddd == cmd) return 0;
+                DRM_ERROR("Illegal DMA 0xdddddddd command\n");
+                break;
+        case check_z_buffer_addr0:
+                cur_seq->unfinished = z_address;
+                cur_seq->z_addr = (cur_seq->z_addr & 0xFF000000) |
+                        (cmd & 0x00FFFFFF);
+                return 0;
+        case check_z_buffer_addr1:
+                cur_seq->unfinished = z_address;
+                cur_seq->z_addr = (cur_seq->z_addr & 0x00FFFFFF) |
+                        ((cmd & 0xFF) << 24);
+                return 0;
+        case check_z_buffer_addr_mode:
+                cur_seq->unfinished = z_address;
+                if ((cmd & 0x0000C000) == 0) return 0;
+                DRM_ERROR("Attempt to place Z buffer in system memory\n");
+                return 2;
+        case check_destination_addr0:
+                cur_seq->unfinished = dest_address;
+                cur_seq->d_addr = (cur_seq->d_addr & 0xFF000000) |
+                        (cmd & 0x00FFFFFF);
+                return 0;
+        case check_destination_addr1:
+                cur_seq->unfinished = dest_address;
+                cur_seq->d_addr = (cur_seq->d_addr & 0x00FFFFFF) |
+                        ((cmd & 0xFF) << 24);
+                return 0;
+        case check_destination_addr_mode:
+                cur_seq->unfinished = dest_address;
+                if ((cmd & 0x0000C000) == 0) return 0;
+                DRM_ERROR("Attempt to place 3D drawing buffer in system memory\n");
+                return 2;           
+        case check_texture_addr0:
+                cur_seq->unfinished = tex_address;
+                tmp = (cmd >> 24);
+                tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp];
+                *tmp_addr = (*tmp_addr & 0xFF000000) | (cmd & 0x00FFFFFF);
+                return 0;
+        case check_texture_addr1:
+                cur_seq->unfinished = tex_address;
+                tmp = ((cmd >> 24) - 0x20);
+                tmp += tmp << 1;
+                tmp_addr = &cur_seq->t_addr[cur_seq->texture][tmp];
+                *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24);
+                tmp_addr++;
+                *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF00) << 16);
+                tmp_addr++;
+                *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF0000) << 8);
+                return 0;
+        case check_texture_addr2:
+                cur_seq->unfinished = tex_address;
+                cur_seq->tex_level_lo[tmp = cur_seq->texture] = cmd & 0x3F;
+                cur_seq->tex_level_hi[tmp] = (cmd & 0xFC0) >> 6;
+                return 0;
+        case check_texture_addr3:
+                cur_seq->unfinished = tex_address;
+                tmp = ((cmd >> 24) - 0x2B);
+                cur_seq->pitch[cur_seq->texture][tmp] = (cmd & 0x00F00000) >> 20;
+                if (!tmp && (cmd & 0x000FFFFF)) {
+                        DRM_ERROR("Unimplemented texture level 0 pitch mode.\n");
+                        return 2;
+                }
+                return 0;
+        case check_texture_addr4:
+                cur_seq->unfinished = tex_address;
+                tmp_addr = &cur_seq->t_addr[cur_seq->texture][9];
+                *tmp_addr = (*tmp_addr & 0x00FFFFFF) | ((cmd & 0xFF) << 24);
+                return 0;
+        case check_texture_addr5:
+        case check_texture_addr6:
+                cur_seq->unfinished = tex_address;
+                /*
+                 * Texture width. We don't care since we have the pitch.
+                 */  
+                return 0;
+        case check_texture_addr7:
+                cur_seq->unfinished = tex_address;
+                tmp_addr = &(cur_seq->height[cur_seq->texture][0]);
+                tmp_addr[5] = 1 << ((cmd & 0x00F00000) >> 20);
+                tmp_addr[4] = 1 << ((cmd & 0x000F0000) >> 16);
+                tmp_addr[3] = 1 << ((cmd & 0x0000F000) >> 12);
+                tmp_addr[2] = 1 << ((cmd & 0x00000F00) >> 8);
+                tmp_addr[1] = 1 << ((cmd & 0x000000F0) >> 4);
+                tmp_addr[0] = 1 << (cmd & 0x0000000F);
+                return 0;
+        case check_texture_addr8:
+                cur_seq->unfinished = tex_address;
+                tmp_addr = &(cur_seq->height[cur_seq->texture][0]);
+                tmp_addr[9] = 1 << ((cmd & 0x0000F000) >> 12);
+                tmp_addr[8] = 1 << ((cmd & 0x00000F00) >> 8);
+                tmp_addr[7] = 1 << ((cmd & 0x000000F0) >> 4);
+                tmp_addr[6] = 1 << (cmd & 0x0000000F);
+                return 0;
+        case check_texture_addr_mode:
+                cur_seq->unfinished = tex_address;
+                if ( 2 == (tmp = cmd & 0x00000003)) {
+                        DRM_ERROR("Attempt to fetch texture from system memory.\n"); 
+                        return 2;
+                }
+                cur_seq->agp_texture = (tmp == 3);
+                cur_seq->tex_palette_size[cur_seq->texture] = 
+                        (cmd >> 16) & 0x000000007;
+                return 0;
+        case check_for_vertex_count:
+                cur_seq->vertex_count = cmd & 0x0000FFFF;
+                return 0;
+        case check_number_texunits:
+                cur_seq->multitex = (cmd >> 3) & 1;
+                return 0;
+        default:
+                DRM_ERROR("Illegal DMA data: 0x%x\n", cmd);
+                return 2;
+        }
+        return 2;
+}
+
+
+static __inline__ int
+via_check_prim_list(uint32_t const **buffer, const uint32_t *buf_end,
+                    drm_via_state_t *cur_seq)
+{
+        drm_via_private_t *dev_priv = (drm_via_private_t *) cur_seq->dev->dev_private;
+        uint32_t a_fire, bcmd , dw_count;
+        int ret = 0;
+        int have_fire;
+        const uint32_t *buf = *buffer;
+
+        while(buf < buf_end) {
+                have_fire = 0;
+                if ((buf_end - buf) < 2) {
+                        DRM_ERROR("Unexpected termination of primitive list.\n");
+                        ret = 1;
+                        break;
+                }
+                if ((*buf & HC_ACMD_MASK) != HC_ACMD_HCmdB) break;
+                bcmd = *buf++;
+                if ((*buf & HC_ACMD_MASK) != HC_ACMD_HCmdA) {
+                        DRM_ERROR("Expected Vertex List A command, got 0x%x\n",
+                                  *buf);
+                        ret = 1;
+                        break;
+                }
+                a_fire = *buf++ | HC_HPLEND_MASK | HC_HPMValidN_MASK | HC_HE3Fire_MASK; 
+        
+                /*
+                 * How many dwords per vertex ?
+                 */ 
+                
+                if (cur_seq->agp && ((bcmd & (0xF << 11)) == 0)) {
+                        DRM_ERROR("Illegal B command vertex data for AGP.\n");
+                        ret = 1;
+                        break;
+                } 
+
+                dw_count = 0;
+                if (bcmd & (1 << 7)) dw_count += (cur_seq->multitex) ? 2:1;
+                if (bcmd & (1 << 8)) dw_count += (cur_seq->multitex) ? 2:1;
+                if (bcmd & (1 << 9)) dw_count++;
+                if (bcmd & (1 << 10)) dw_count++;
+                if (bcmd & (1 << 11)) dw_count++;
+                if (bcmd & (1 << 12)) dw_count++;
+                if (bcmd & (1 << 13)) dw_count++;
+                if (bcmd & (1 << 14)) dw_count++;
+
+                while(buf < buf_end) {
+                        if (*buf == a_fire) {
+                                if (dev_priv->num_fire_offsets >= VIA_FIRE_BUF_SIZE) {
+                                        DRM_ERROR("Fire offset buffer full.\n");
+                                        ret = 1;
+                                        break;
+                                }
+                                dev_priv->fire_offsets[dev_priv->num_fire_offsets++] = buf;
+                                have_fire = 1;
+                                buf++;
+                                if (buf < buf_end && *buf == a_fire) 
+                                        buf++;
+                                break;
+                        }
+                        if ((*buf == HALCYON_HEADER2) || 
+                            ((*buf & HALCYON_FIREMASK) == HALCYON_FIRECMD)) {
+                                DRM_ERROR("Missing Vertex Fire command, "
+                                          "Stray Vertex Fire command  or verifier "
+                                          "lost sync.\n");
+                                ret = 1;
+                                break;
+                        }
+                        if ((ret = eat_words(&buf, buf_end, dw_count)))
+                                break;
+                }
+                if (buf >= buf_end && !have_fire) {
+                        DRM_ERROR("Missing Vertex Fire command or verifier "
+                                  "lost sync.\n");
+                        ret = 1;
+                        break;
+                }
+                if (cur_seq->agp && ((buf - cur_seq->buf_start) & 0x01)) {
+                        DRM_ERROR("AGP Primitive list end misaligned.\n");
+                        ret = 1;
+                        break;
+                }
+        } 
+        *buffer = buf;
+        return ret;
+}
+
+
+                       
+
+
+static __inline__ verifier_state_t
+via_check_header2( uint32_t const **buffer, const uint32_t *buf_end, 
+                   drm_via_state_t *hc_state)
+{
+        uint32_t cmd;
+        int hz_mode;
+        hazard_t hz;
+        const uint32_t *buf = *buffer;
+        const hazard_t *hz_table;
+
+
+        if ((buf_end - buf) < 2) {
+                DRM_ERROR("Illegal termination of DMA HALCYON_HEADER2 sequence.\n");
+                return state_error;
+        }
+        buf++;
+        cmd = (*buf++ & 0xFFFF0000) >> 16;
+
+        switch(cmd) {
+        case HC_ParaType_CmdVdata:
+                if (via_check_prim_list(&buf, buf_end, hc_state )) 
+                        return state_error;
+                *buffer = buf;
+                return state_command;
+        case HC_ParaType_NotTex:
+                hz_table = table1;
+                break;
+        case HC_ParaType_Tex:
+                hc_state->texture = 0;
+                hz_table = table2;
+                break;
+        case (HC_ParaType_Tex | (HC_SubType_Tex1 << 8)):
+                hc_state->texture = 1;
+                hz_table = table2;
+                break;
+        case (HC_ParaType_Tex | (HC_SubType_TexGeneral << 8)):
+                hz_table = table3;
+                break;
+        case HC_ParaType_Auto:
+                if (eat_words(&buf, buf_end, 2))
+                        return state_error;
+                *buffer = buf;
+                return state_command;
+        case (HC_ParaType_Palette | (HC_SubType_Stipple << 8)):
+                if (eat_words(&buf, buf_end, 32))
+                        return state_error;
+                *buffer = buf;
+                return state_command;
+        case (HC_ParaType_Palette | (HC_SubType_TexPalette0 << 8)):
+        case (HC_ParaType_Palette | (HC_SubType_TexPalette1 << 8)):
+                DRM_ERROR("Texture palettes are rejected because of "
+                          "lack of info how to determine their size.\n");
+                return state_error;
+        case (HC_ParaType_Palette | (HC_SubType_FogTable << 8)):
+                DRM_ERROR("Fog factor palettes are rejected because of "
+                          "lack of info how to determine their size.\n");
+                return state_error;
+        default:
+
+                /*
+                 * There are some unimplemented HC_ParaTypes here, that
+                 * need to be implemented if the Mesa driver is extended.
+                 */
+
+                DRM_ERROR("Invalid or unimplemented HALCYON_HEADER2 "
+                          "DMA subcommand: 0x%x. Previous dword: 0x%x\n", 
+                          cmd, *(buf -2));
+                *buffer = buf;
+                return state_error;
+        }
+
+        while(buf < buf_end) {
+                cmd = *buf++;
+                if ((hz = hz_table[cmd >> 24])) {
+                        if ((hz_mode = investigate_hazard(cmd, hz, hc_state))) {
+                                if (hz_mode == 1) {
+                                        buf--;
+                                        break;
+                                }
+                                return state_error;
+                        }
+                } else if (hc_state->unfinished && 
+                           finish_current_sequence(hc_state)) {
+                        return state_error;
+                }
+        }
+        if (hc_state->unfinished && finish_current_sequence(hc_state)) {
+                return state_error;
+        }
+        *buffer = buf;
+        return state_command;
+}
+
+static __inline__ verifier_state_t
+via_parse_header2( drm_via_private_t *dev_priv, uint32_t const **buffer, const uint32_t *buf_end,
+                   int *fire_count)
+{
+        uint32_t cmd;
+        const uint32_t *buf = *buffer;
+        const uint32_t *next_fire; 
+        int burst = 0;
+
+        next_fire = dev_priv->fire_offsets[*fire_count];
+        buf++;
+        cmd = (*buf & 0xFFFF0000) >> 16;
+        VIA_WRITE(HC_REG_TRANS_SET + HC_REG_BASE, *buf++);
+        switch(cmd) {
+        case HC_ParaType_CmdVdata:
+                while ((buf < buf_end) &&
+                       (*fire_count < dev_priv->num_fire_offsets) && 
+                       (*buf & HC_ACMD_MASK) == HC_ACMD_HCmdB ) {
+                        while(buf <= next_fire) {
+                                VIA_WRITE(HC_REG_TRANS_SPACE + HC_REG_BASE + (burst & 63), *buf++);
+                                burst += 4;
+                        }
+                        if ( ( buf < buf_end ) && ((*buf & HALCYON_FIREMASK) == HALCYON_FIRECMD))
+                                buf++;
+
+                        if (++(*fire_count) < dev_priv->num_fire_offsets) 
+                                next_fire = dev_priv->fire_offsets[*fire_count];
+                }
+                break;
+        default:
+                while(buf < buf_end) {
+                        
+                        if ( *buf == HC_HEADER2 ||
+                             (*buf & HALCYON_HEADER1MASK) == HALCYON_HEADER1  ||
+                             (*buf & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5 ||
+                             (*buf & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6 ) break;
+                        
+                        VIA_WRITE(HC_REG_TRANS_SPACE + HC_REG_BASE + (burst & 63), *buf++);
+                        burst +=4;
+                }
+        }
+        *buffer = buf;
+        return state_command;
+}
+
+
+
+static __inline__ int
+verify_mmio_address( uint32_t address)
+{
+        if ((address > 0x3FF) && (address < 0xC00 )) {
+                DRM_ERROR("Invalid VIDEO DMA command. "
+                          "Attempt to access 3D- or command burst area.\n");
+                return 1;
+        } else if ((address > 0xCFF) && (address < 0x1300)) {
+                DRM_ERROR("Invalid VIDEO DMA command. "
+                          "Attempt to access PCI DMA area.\n");
+                return 1;               
+        } else if (address > 0x13FF ) {
+                DRM_ERROR("Invalid VIDEO DMA command. "
+                          "Attempt to access VGA registers.\n");
+                return 1;
+        }
+        return 0;
+}
+
+static __inline__ int
+verify_video_tail( uint32_t const **buffer, const uint32_t *buf_end, uint32_t dwords) 
+{
+        const uint32_t *buf = *buffer;
+
+        if (buf_end - buf < dwords) {
+                DRM_ERROR("Illegal termination of video command.\n");
+                return 1;
+        }
+        while (dwords--) {
+                if (*buf++) {
+                        DRM_ERROR("Illegal video command tail.\n");
+                        return 1;
+                }
+        }
+        *buffer = buf;
+        return 0;
+}
+                
+
+static __inline__ verifier_state_t
+via_check_header1( uint32_t const **buffer, const uint32_t *buf_end )
+{
+        uint32_t cmd;
+        const uint32_t *buf = *buffer;
+        verifier_state_t ret = state_command;
+
+        while (buf < buf_end) {
+                cmd = *buf;
+                if ((cmd > ((0x3FF >> 2) | HALCYON_HEADER1)) &&
+                    (cmd < ((0xC00 >> 2) | HALCYON_HEADER1))) {                 
+                        if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1) 
+                                break;
+                        DRM_ERROR("Invalid HALCYON_HEADER1 command. "
+                                  "Attempt to access 3D- or command burst area.\n");
+                        ret = state_error;
+                        break;
+                } else if (cmd > ((0xCFF >> 2) | HALCYON_HEADER1)) {
+                        if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1) 
+                                break;
+                        DRM_ERROR("Invalid HALCYON_HEADER1 command. "
+                                  "Attempt to access VGA registers.\n");
+                        ret = state_error;
+                        break;                  
+                } else {                        
+                        buf += 2;
+                }
+        }
+        *buffer = buf;
+        return ret;
+}
+
+static __inline__ verifier_state_t
+via_parse_header1( drm_via_private_t *dev_priv, uint32_t const **buffer, const uint32_t *buf_end )
+{
+        register uint32_t cmd;
+        const uint32_t *buf = *buffer;
+
+        while (buf < buf_end) {
+                cmd = *buf;
+                if ((cmd & HALCYON_HEADER1MASK) != HALCYON_HEADER1) break;
+                VIA_WRITE( (cmd & ~HALCYON_HEADER1MASK) << 2, *++buf); 
+                buf++;
+        }
+        *buffer = buf;
+        return state_command;
+}
+
+static __inline__ verifier_state_t
+via_check_vheader5( uint32_t const **buffer, const uint32_t *buf_end )
+{
+        uint32_t data;
+        const uint32_t *buf = *buffer;
+
+        if (buf_end - buf < 4) {
+                DRM_ERROR("Illegal termination of video header5 command\n");
+                return state_error;
+        }
+
+        data = *buf++ & ~VIA_VIDEOMASK;
+        if (verify_mmio_address(data))
+                return state_error;
+
+        data = *buf++;
+        if (*buf++ != 0x00F50000) {
+                DRM_ERROR("Illegal header5 header data\n");
+                return state_error;
+        }
+        if (*buf++ != 0x00000000) {
+                DRM_ERROR("Illegal header5 header data\n");
+                return state_error;
+        }
+        if (eat_words(&buf, buf_end, data)) 
+                return state_error;
+        if ((data & 3) && verify_video_tail(&buf, buf_end, 4 - (data & 3))) 
+                return state_error;
+        *buffer = buf;
+        return state_command;
+               
+} 
+
+static __inline__ verifier_state_t
+via_parse_vheader5( drm_via_private_t *dev_priv, uint32_t const **buffer, const uint32_t *buf_end )
+{
+  uint32_t addr, count, i;
+        const uint32_t *buf = *buffer;
+        
+        addr = *buf++ & ~VIA_VIDEOMASK;
+        i = count = *buf;
+        buf += 3;
+        while(i--) {
+                VIA_WRITE(addr, *buf++);
+        }
+        if (count & 3) buf += 4 - (count & 3);
+        *buffer = buf;
+        return state_command;          
+} 
+
+
+static __inline__ verifier_state_t
+via_check_vheader6( uint32_t const **buffer, const uint32_t *buf_end )
+{
+        uint32_t data;
+        const uint32_t *buf = *buffer;
+        uint32_t i;
+
+
+        if (buf_end - buf < 4) {
+                DRM_ERROR("Illegal termination of video header6 command\n");
+                return state_error;
+        }
+        buf++;
+        data = *buf++;
+        if (*buf++ != 0x00F60000) {
+                DRM_ERROR("Illegal header6 header data\n");
+                return state_error;
+        }
+        if (*buf++ != 0x00000000) {
+                DRM_ERROR("Illegal header6 header data\n");
+                return state_error;
+        }
+        if ((buf_end - buf) < (data << 1)) {
+                DRM_ERROR("Illegal termination of video header6 command\n");
+                return state_error;
+        }
+        for (i=0; i<data; ++i) {
+                if (verify_mmio_address(*buf++))
+                        return state_error;
+                buf++;
+        }
+        data <<= 1;
+        if ((data & 3) && verify_video_tail(&buf, buf_end, 4 - (data & 3)))
+                return state_error;
+        *buffer = buf;
+        return state_command;
+} 
+
+static __inline__ verifier_state_t
+via_parse_vheader6( drm_via_private_t *dev_priv, uint32_t const **buffer, const uint32_t *buf_end )
+{
+
+  uint32_t addr, count, i;
+        const uint32_t *buf = *buffer;
+
+        i = count = *++buf;
+        buf += 3;
+        while(i--) {
+                addr = *buf++;
+                VIA_WRITE(addr, *buf++);
+        }
+        count <<= 1;
+        if (count & 3) buf += 4 - (count & 3);
+        *buffer = buf;
+        return state_command;
+} 
+
+
+
+int 
+via_verify_command_stream(const uint32_t * buf, unsigned int size, drm_device_t *dev,
+                          int agp)
+{
+
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        drm_via_state_t *hc_state = &dev_priv->hc_state;
+        drm_via_state_t saved_state = *hc_state;
+        uint32_t cmd;
+        const uint32_t *buf_end = buf + ( size >> 2 );
+        verifier_state_t state = state_command;
+        int pro_group_a = dev_priv->pro_group_a;
+        
+        hc_state->dev = dev;
+        hc_state->unfinished = no_sequence;
+        hc_state->map_cache = NULL;
+        hc_state->agp = agp;
+        hc_state->buf_start = buf;
+        dev_priv->num_fire_offsets = 0;
+
+        while (buf < buf_end) {
+
+                switch (state) {
+                case state_header2:
+                  state = via_check_header2( &buf, buf_end, hc_state );
+                        break;
+                case state_header1:
+                        state = via_check_header1( &buf, buf_end );
+                        break;
+                case state_vheader5:
+                        state = via_check_vheader5( &buf, buf_end );
+                        break;
+                case state_vheader6:
+                        state = via_check_vheader6( &buf, buf_end );
+                        break;
+                case state_command:
+                        if (HALCYON_HEADER2 == (cmd = *buf)) 
+                                state = state_header2;
+                        else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) 
+                                state = state_header1;
+                        else if (pro_group_a && (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5)
+                                state = state_vheader5;
+                        else if (pro_group_a && (cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6)
+                                state = state_vheader6;
+                        else {
+                                DRM_ERROR("Invalid / Unimplemented DMA HEADER command. 0x%x\n",
+                                          cmd);
+                                state = state_error;
+                        }
+                        break;
+                case state_error:
+                default:
+                        *hc_state = saved_state;
+                        return DRM_ERR(EINVAL);                 
+                }
+        }       
+        if (state == state_error) {
+                *hc_state = saved_state;
+                return DRM_ERR(EINVAL);
+        }
+        return 0;
+}
+
+int 
+via_parse_command_stream(drm_device_t *dev, const uint32_t * buf, unsigned int size)
+{
+
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        uint32_t cmd;
+        const uint32_t *buf_end = buf + ( size >> 2 );
+        verifier_state_t state = state_command;
+        int fire_count = 0;
+        
+        while (buf < buf_end) {
+
+                switch (state) {
+                case state_header2:
+                  state = via_parse_header2( dev_priv, &buf, buf_end, &fire_count );
+                        break;
+                case state_header1:
+                        state = via_parse_header1( dev_priv, &buf, buf_end );
+                        break;
+                case state_vheader5:
+                        state = via_parse_vheader5( dev_priv, &buf, buf_end );
+                        break;
+                case state_vheader6:
+                        state = via_parse_vheader6( dev_priv, &buf, buf_end );
+                        break;
+                case state_command:
+                        if (HALCYON_HEADER2 == (cmd = *buf)) 
+                                state = state_header2;
+                        else if ((cmd & HALCYON_HEADER1MASK) == HALCYON_HEADER1) 
+                                state = state_header1;
+                        else if ((cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER5)
+                                state = state_vheader5;
+                        else if ((cmd & VIA_VIDEOMASK) == VIA_VIDEO_HEADER6)
+                                state = state_vheader6;
+                        else {
+                                DRM_ERROR("Invalid / Unimplemented DMA HEADER command. 0x%x\n",
+                                          cmd);
+                                state = state_error;
+                        }
+                        break;
+                case state_error:
+                default:
+                        return DRM_ERR(EINVAL);                 
+                }
+        }       
+        if (state == state_error) {
+                return DRM_ERR(EINVAL);
+        }
+        return 0;
+}
+
+
+
+static void 
+setup_hazard_table(hz_init_t init_table[], hazard_t table[], int size)
+{
+        int i;
+
+        for(i=0; i<256; ++i) {
+                table[i] = forbidden_command;
+        }
+
+        for(i=0; i<size; ++i) {
+                table[init_table[i].code] = init_table[i].hz;
+        }
+}
+
+void 
+via_init_command_verifier( void )
+{
+        setup_hazard_table(init_table1, table1, sizeof(init_table1) / sizeof(hz_init_t));
+        setup_hazard_table(init_table2, table2, sizeof(init_table2) / sizeof(hz_init_t));
+        setup_hazard_table(init_table3, table3, sizeof(init_table3) / sizeof(hz_init_t));
+}
diff --git a/drivers/char/drm/via_verifier.h b/drivers/char/drm/via_verifier.h
new file mode 100644
index 000000000000..a8e13592620f
--- /dev/null
+++ b/drivers/char/drm/via_verifier.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2004 The Unichrome Project. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE UNICHROME PROJECT, AND/OR ITS SUPPLIERS 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.
+ *
+ * Author: Thomas Hellström 2004.
+ */
+
+#ifndef _VIA_VERIFIER_H_
+#define _VIA_VERIFIER_H_
+
+typedef enum{
+        no_sequence = 0, 
+        z_address,
+        dest_address,
+        tex_address
+}drm_via_sequence_t;
+
+
+
+typedef struct{
+        unsigned texture;
+        uint32_t z_addr; 
+        uint32_t d_addr; 
+        uint32_t t_addr[2][10];
+        uint32_t pitch[2][10];
+        uint32_t height[2][10];
+        uint32_t tex_level_lo[2]; 
+        uint32_t tex_level_hi[2];
+        uint32_t tex_palette_size[2];
+        drm_via_sequence_t unfinished;
+        int agp_texture;
+        int multitex;
+        drm_device_t *dev;
+        drm_map_t *map_cache;
+        uint32_t vertex_count;
+        int agp;
+        const uint32_t *buf_start;
+} drm_via_state_t;
+
+extern int via_verify_command_stream(const uint32_t * buf, unsigned int size, 
+                                     drm_device_t *dev, int agp);
+
+#endif
diff --git a/drivers/char/drm/via_video.c b/drivers/char/drm/via_video.c
new file mode 100644
index 000000000000..37a61c67b292
--- /dev/null
+++ b/drivers/char/drm/via_video.c
@@ -0,0 +1,97 @@
+/*
+ * Copyright 2005 Thomas Hellstrom. All Rights Reserved.
+ *
+ * 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, sub license,
+ * 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 (including the
+ * next paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S), AND/OR THE COPYRIGHT HOLDER(S) 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.
+ *
+ * Author: Thomas Hellstrom 2005.
+ *
+ * Video and XvMC related functions.
+ */
+
+#include "drmP.h"
+#include "via_drm.h"
+#include "via_drv.h"
+
+void
+via_init_futex(drm_via_private_t *dev_priv)
+{
+        unsigned int i;
+
+        DRM_DEBUG("%s\n", __FUNCTION__);
+
+        for (i = 0; i < VIA_NR_XVMC_LOCKS; ++i) {
+                DRM_INIT_WAITQUEUE(&(dev_priv->decoder_queue[i]));
+                XVMCLOCKPTR(dev_priv->sarea_priv, i)->lock = 0;
+        }
+}
+
+void
+via_cleanup_futex(drm_via_private_t *dev_priv)
+{
+}       
+
+void
+via_release_futex(drm_via_private_t *dev_priv, int context)
+{
+        unsigned int i;
+        volatile int *lock;
+
+        for (i=0; i < VIA_NR_XVMC_LOCKS; ++i) {
+                lock = (int *) XVMCLOCKPTR(dev_priv->sarea_priv, i);
+                if ( (_DRM_LOCKING_CONTEXT( *lock ) == context)) {
+                        if (_DRM_LOCK_IS_HELD( *lock ) && (*lock & _DRM_LOCK_CONT)) {
+                                DRM_WAKEUP( &(dev_priv->decoder_queue[i]));
+                        }
+                        *lock = 0;
+                }
+        }       
+}       
+
+int 
+via_decoder_futex(DRM_IOCTL_ARGS)
+{
+        DRM_DEVICE;
+        drm_via_futex_t fx;
+        volatile int *lock;
+        drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+        drm_via_sarea_t *sAPriv = dev_priv->sarea_priv;
+        int ret = 0;
+
+        DRM_DEBUG("%s\n", __FUNCTION__);
+
+        DRM_COPY_FROM_USER_IOCTL(fx, (drm_via_futex_t *) data, sizeof(fx));
+
+        if (fx.lock > VIA_NR_XVMC_LOCKS)
+                return -EFAULT;
+
+        lock = (int *)XVMCLOCKPTR(sAPriv, fx.lock);
+
+        switch (fx.func) {
+        case VIA_FUTEX_WAIT:
+                DRM_WAIT_ON(ret, dev_priv->decoder_queue[fx.lock],
+                            (fx.ms / 10) * (DRM_HZ / 100), *lock != fx.val);
+                return ret;
+        case VIA_FUTEX_WAKE:
+                DRM_WAKEUP(&(dev_priv->decoder_queue[fx.lock]));
+                return 0;
+        }
+        return 0;
+}
+