Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 943 insertions, 0 deletions

diff --git a/drivers/char/drm/r128_cce.c b/drivers/char/drm/r128_cce.c
new file mode 100644
index 00000000000..08ed8d01d9d
--- /dev/null
+++ b/drivers/char/drm/r128_cce.c
@@ -0,0 +1,943 @@
+/* r128_cce.c -- ATI Rage 128 driver -*- linux-c -*-
+ * Created: Wed Apr  5 19:24:19 2000 by kevin@precisioninsight.com
+ *
+ * Copyright 2000 Precision Insight, Inc., Cedar Park, Texas.
+ * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
+ * 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
+ * PRECISION INSIGHT 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:
+ *    Gareth Hughes <gareth@valinux.com>
+ */
+
+#include "drmP.h"
+#include "drm.h"
+#include "r128_drm.h"
+#include "r128_drv.h"
+
+#define R128_FIFO_DEBUG		0
+
+/* CCE microcode (from ATI) */
+static u32 r128_cce_microcode[] = {
+	0, 276838400, 0, 268449792, 2, 142, 2, 145, 0, 1076765731, 0,
+	1617039951, 0, 774592877, 0, 1987540286, 0, 2307490946U, 0,
+	599558925, 0, 589505315, 0, 596487092, 0, 589505315, 1,
+	11544576, 1, 206848, 1, 311296, 1, 198656, 2, 912273422, 11,
+	262144, 0, 0, 1, 33559837, 1, 7438, 1, 14809, 1, 6615, 12, 28,
+	1, 6614, 12, 28, 2, 23, 11, 18874368, 0, 16790922, 1, 409600, 9,
+	30, 1, 147854772, 16, 420483072, 3, 8192, 0, 10240, 1, 198656,
+	1, 15630, 1, 51200, 10, 34858, 9, 42, 1, 33559823, 2, 10276, 1,
+	15717, 1, 15718, 2, 43, 1, 15936948, 1, 570480831, 1, 14715071,
+	12, 322123831, 1, 33953125, 12, 55, 1, 33559908, 1, 15718, 2,
+	46, 4, 2099258, 1, 526336, 1, 442623, 4, 4194365, 1, 509952, 1,
+	459007, 3, 0, 12, 92, 2, 46, 12, 176, 1, 15734, 1, 206848, 1,
+	18432, 1, 133120, 1, 100670734, 1, 149504, 1, 165888, 1,
+	15975928, 1, 1048576, 6, 3145806, 1, 15715, 16, 2150645232U, 2,
+	268449859, 2, 10307, 12, 176, 1, 15734, 1, 15735, 1, 15630, 1,
+	15631, 1, 5253120, 6, 3145810, 16, 2150645232U, 1, 15864, 2, 82,
+	1, 343310, 1, 1064207, 2, 3145813, 1, 15728, 1, 7817, 1, 15729,
+	3, 15730, 12, 92, 2, 98, 1, 16168, 1, 16167, 1, 16002, 1, 16008,
+	1, 15974, 1, 15975, 1, 15990, 1, 15976, 1, 15977, 1, 15980, 0,
+	15981, 1, 10240, 1, 5253120, 1, 15720, 1, 198656, 6, 110, 1,
+	180224, 1, 103824738, 2, 112, 2, 3145839, 0, 536885440, 1,
+	114880, 14, 125, 12, 206975, 1, 33559995, 12, 198784, 0,
+	33570236, 1, 15803, 0, 15804, 3, 294912, 1, 294912, 3, 442370,
+	1, 11544576, 0, 811612160, 1, 12593152, 1, 11536384, 1,
+	14024704, 7, 310382726, 0, 10240, 1, 14796, 1, 14797, 1, 14793,
+	1, 14794, 0, 14795, 1, 268679168, 1, 9437184, 1, 268449792, 1,
+	198656, 1, 9452827, 1, 1075854602, 1, 1075854603, 1, 557056, 1,
+	114880, 14, 159, 12, 198784, 1, 1109409213, 12, 198783, 1,
+	1107312059, 12, 198784, 1, 1109409212, 2, 162, 1, 1075854781, 1,
+	1073757627, 1, 1075854780, 1, 540672, 1, 10485760, 6, 3145894,
+	16, 274741248, 9, 168, 3, 4194304, 3, 4209949, 0, 0, 0, 256, 14,
+	174, 1, 114857, 1, 33560007, 12, 176, 0, 10240, 1, 114858, 1,
+	33560018, 1, 114857, 3, 33560007, 1, 16008, 1, 114874, 1,
+	33560360, 1, 114875, 1, 33560154, 0, 15963, 0, 256, 0, 4096, 1,
+	409611, 9, 188, 0, 10240, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+static int R128_READ_PLL(drm_device_t *dev, int addr)
+{
+	drm_r128_private_t *dev_priv = dev->dev_private;
+
+	R128_WRITE8(R128_CLOCK_CNTL_INDEX, addr & 0x1f);
+	return R128_READ(R128_CLOCK_CNTL_DATA);
+}
+
+#if R128_FIFO_DEBUG
+static void r128_status( drm_r128_private_t *dev_priv )
+{
+	printk( "GUI_STAT           = 0x%08x\n",
+		(unsigned int)R128_READ( R128_GUI_STAT ) );
+	printk( "PM4_STAT           = 0x%08x\n",
+		(unsigned int)R128_READ( R128_PM4_STAT ) );
+	printk( "PM4_BUFFER_DL_WPTR = 0x%08x\n",
+		(unsigned int)R128_READ( R128_PM4_BUFFER_DL_WPTR ) );
+	printk( "PM4_BUFFER_DL_RPTR = 0x%08x\n",
+		(unsigned int)R128_READ( R128_PM4_BUFFER_DL_RPTR ) );
+	printk( "PM4_MICRO_CNTL     = 0x%08x\n",
+		(unsigned int)R128_READ( R128_PM4_MICRO_CNTL ) );
+	printk( "PM4_BUFFER_CNTL    = 0x%08x\n",
+		(unsigned int)R128_READ( R128_PM4_BUFFER_CNTL ) );
+}
+#endif
+
+
+/* ================================================================
+ * Engine, FIFO control
+ */
+
+static int r128_do_pixcache_flush( drm_r128_private_t *dev_priv )
+{
+	u32 tmp;
+	int i;
+
+	tmp = R128_READ( R128_PC_NGUI_CTLSTAT ) | R128_PC_FLUSH_ALL;
+	R128_WRITE( R128_PC_NGUI_CTLSTAT, tmp );
+
+	for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
+		if ( !(R128_READ( R128_PC_NGUI_CTLSTAT ) & R128_PC_BUSY) ) {
+			return 0;
+		}
+		DRM_UDELAY( 1 );
+	}
+
+#if R128_FIFO_DEBUG
+	DRM_ERROR( "failed!\n" );
+#endif
+	return DRM_ERR(EBUSY);
+}
+
+static int r128_do_wait_for_fifo( drm_r128_private_t *dev_priv, int entries )
+{
+	int i;
+
+	for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
+		int slots = R128_READ( R128_GUI_STAT ) & R128_GUI_FIFOCNT_MASK;
+		if ( slots >= entries ) return 0;
+		DRM_UDELAY( 1 );
+	}
+
+#if R128_FIFO_DEBUG
+	DRM_ERROR( "failed!\n" );
+#endif
+	return DRM_ERR(EBUSY);
+}
+
+static int r128_do_wait_for_idle( drm_r128_private_t *dev_priv )
+{
+	int i, ret;
+
+	ret = r128_do_wait_for_fifo( dev_priv, 64 );
+	if ( ret ) return ret;
+
+	for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
+		if ( !(R128_READ( R128_GUI_STAT ) & R128_GUI_ACTIVE) ) {
+			r128_do_pixcache_flush( dev_priv );
+			return 0;
+		}
+		DRM_UDELAY( 1 );
+	}
+
+#if R128_FIFO_DEBUG
+	DRM_ERROR( "failed!\n" );
+#endif
+	return DRM_ERR(EBUSY);
+}
+
+
+/* ================================================================
+ * CCE control, initialization
+ */
+
+/* Load the microcode for the CCE */
+static void r128_cce_load_microcode( drm_r128_private_t *dev_priv )
+{
+	int i;
+
+	DRM_DEBUG( "\n" );
+
+	r128_do_wait_for_idle( dev_priv );
+
+	R128_WRITE( R128_PM4_MICROCODE_ADDR, 0 );
+	for ( i = 0 ; i < 256 ; i++ ) {
+		R128_WRITE( R128_PM4_MICROCODE_DATAH,
+			    r128_cce_microcode[i * 2] );
+		R128_WRITE( R128_PM4_MICROCODE_DATAL,
+			    r128_cce_microcode[i * 2 + 1] );
+	}
+}
+
+/* Flush any pending commands to the CCE.  This should only be used just
+ * prior to a wait for idle, as it informs the engine that the command
+ * stream is ending.
+ */
+static void r128_do_cce_flush( drm_r128_private_t *dev_priv )
+{
+	u32 tmp;
+
+	tmp = R128_READ( R128_PM4_BUFFER_DL_WPTR ) | R128_PM4_BUFFER_DL_DONE;
+	R128_WRITE( R128_PM4_BUFFER_DL_WPTR, tmp );
+}
+
+/* Wait for the CCE to go idle.
+ */
+int r128_do_cce_idle( drm_r128_private_t *dev_priv )
+{
+	int i;
+
+	for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
+		if ( GET_RING_HEAD( dev_priv ) == dev_priv->ring.tail ) {
+			int pm4stat = R128_READ( R128_PM4_STAT );
+			if ( ( (pm4stat & R128_PM4_FIFOCNT_MASK) >=
+			       dev_priv->cce_fifo_size ) &&
+			     !(pm4stat & (R128_PM4_BUSY |
+					  R128_PM4_GUI_ACTIVE)) ) {
+				return r128_do_pixcache_flush( dev_priv );
+			}
+		}
+		DRM_UDELAY( 1 );
+	}
+
+#if R128_FIFO_DEBUG
+	DRM_ERROR( "failed!\n" );
+	r128_status( dev_priv );
+#endif
+	return DRM_ERR(EBUSY);
+}
+
+/* Start the Concurrent Command Engine.
+ */
+static void r128_do_cce_start( drm_r128_private_t *dev_priv )
+{
+	r128_do_wait_for_idle( dev_priv );
+
+	R128_WRITE( R128_PM4_BUFFER_CNTL,
+		    dev_priv->cce_mode | dev_priv->ring.size_l2qw
+		    | R128_PM4_BUFFER_CNTL_NOUPDATE );
+	R128_READ( R128_PM4_BUFFER_ADDR ); /* as per the sample code */
+	R128_WRITE( R128_PM4_MICRO_CNTL, R128_PM4_MICRO_FREERUN );
+
+	dev_priv->cce_running = 1;
+}
+
+/* Reset the Concurrent Command Engine.  This will not flush any pending
+ * commands, so you must wait for the CCE command stream to complete
+ * before calling this routine.
+ */
+static void r128_do_cce_reset( drm_r128_private_t *dev_priv )
+{
+	R128_WRITE( R128_PM4_BUFFER_DL_WPTR, 0 );
+	R128_WRITE( R128_PM4_BUFFER_DL_RPTR, 0 );
+	dev_priv->ring.tail = 0;
+}
+
+/* Stop the Concurrent Command Engine.  This will not flush any pending
+ * commands, so you must flush the command stream and wait for the CCE
+ * to go idle before calling this routine.
+ */
+static void r128_do_cce_stop( drm_r128_private_t *dev_priv )
+{
+	R128_WRITE( R128_PM4_MICRO_CNTL, 0 );
+	R128_WRITE( R128_PM4_BUFFER_CNTL,
+		    R128_PM4_NONPM4 | R128_PM4_BUFFER_CNTL_NOUPDATE );
+
+	dev_priv->cce_running = 0;
+}
+
+/* Reset the engine.  This will stop the CCE if it is running.
+ */
+static int r128_do_engine_reset( drm_device_t *dev )
+{
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	u32 clock_cntl_index, mclk_cntl, gen_reset_cntl;
+
+	r128_do_pixcache_flush( dev_priv );
+
+	clock_cntl_index = R128_READ( R128_CLOCK_CNTL_INDEX );
+	mclk_cntl = R128_READ_PLL( dev, R128_MCLK_CNTL );
+
+	R128_WRITE_PLL( R128_MCLK_CNTL,
+			mclk_cntl | R128_FORCE_GCP | R128_FORCE_PIPE3D_CP );
+
+	gen_reset_cntl = R128_READ( R128_GEN_RESET_CNTL );
+
+	/* Taken from the sample code - do not change */
+	R128_WRITE( R128_GEN_RESET_CNTL,
+		    gen_reset_cntl | R128_SOFT_RESET_GUI );
+	R128_READ( R128_GEN_RESET_CNTL );
+	R128_WRITE( R128_GEN_RESET_CNTL,
+		    gen_reset_cntl & ~R128_SOFT_RESET_GUI );
+	R128_READ( R128_GEN_RESET_CNTL );
+
+	R128_WRITE_PLL( R128_MCLK_CNTL, mclk_cntl );
+	R128_WRITE( R128_CLOCK_CNTL_INDEX, clock_cntl_index );
+	R128_WRITE( R128_GEN_RESET_CNTL, gen_reset_cntl );
+
+	/* Reset the CCE ring */
+	r128_do_cce_reset( dev_priv );
+
+	/* The CCE is no longer running after an engine reset */
+	dev_priv->cce_running = 0;
+
+	/* Reset any pending vertex, indirect buffers */
+	r128_freelist_reset( dev );
+
+	return 0;
+}
+
+static void r128_cce_init_ring_buffer( drm_device_t *dev,
+				       drm_r128_private_t *dev_priv )
+{
+	u32 ring_start;
+	u32 tmp;
+
+	DRM_DEBUG( "\n" );
+
+	/* The manual (p. 2) says this address is in "VM space".  This
+	 * means it's an offset from the start of AGP space.
+	 */
+#if __OS_HAS_AGP
+	if ( !dev_priv->is_pci )
+		ring_start = dev_priv->cce_ring->offset - dev->agp->base;
+	else
+#endif
+		ring_start = dev_priv->cce_ring->offset - dev->sg->handle;
+
+	R128_WRITE( R128_PM4_BUFFER_OFFSET, ring_start | R128_AGP_OFFSET );
+
+	R128_WRITE( R128_PM4_BUFFER_DL_WPTR, 0 );
+	R128_WRITE( R128_PM4_BUFFER_DL_RPTR, 0 );
+
+	/* Set watermark control */
+	R128_WRITE( R128_PM4_BUFFER_WM_CNTL,
+		    ((R128_WATERMARK_L/4) << R128_WMA_SHIFT)
+		    | ((R128_WATERMARK_M/4) << R128_WMB_SHIFT)
+		    | ((R128_WATERMARK_N/4) << R128_WMC_SHIFT)
+		    | ((R128_WATERMARK_K/64) << R128_WB_WM_SHIFT) );
+
+	/* Force read.  Why?  Because it's in the examples... */
+	R128_READ( R128_PM4_BUFFER_ADDR );
+
+	/* Turn on bus mastering */
+	tmp = R128_READ( R128_BUS_CNTL ) & ~R128_BUS_MASTER_DIS;
+	R128_WRITE( R128_BUS_CNTL, tmp );
+}
+
+static int r128_do_init_cce( drm_device_t *dev, drm_r128_init_t *init )
+{
+	drm_r128_private_t *dev_priv;
+
+	DRM_DEBUG( "\n" );
+
+	dev_priv = drm_alloc( sizeof(drm_r128_private_t), DRM_MEM_DRIVER );
+	if ( dev_priv == NULL )
+		return DRM_ERR(ENOMEM);
+
+	memset( dev_priv, 0, sizeof(drm_r128_private_t) );
+
+	dev_priv->is_pci = init->is_pci;
+
+	if ( dev_priv->is_pci && !dev->sg ) {
+		DRM_ERROR( "PCI GART memory not allocated!\n" );
+		dev->dev_private = (void *)dev_priv;
+		r128_do_cleanup_cce( dev );
+		return DRM_ERR(EINVAL);
+	}
+
+	dev_priv->usec_timeout = init->usec_timeout;
+	if ( dev_priv->usec_timeout < 1 ||
+	     dev_priv->usec_timeout > R128_MAX_USEC_TIMEOUT ) {
+		DRM_DEBUG( "TIMEOUT problem!\n" );
+		dev->dev_private = (void *)dev_priv;
+		r128_do_cleanup_cce( dev );
+		return DRM_ERR(EINVAL);
+	}
+
+	dev_priv->cce_mode = init->cce_mode;
+
+	/* GH: Simple idle check.
+	 */
+	atomic_set( &dev_priv->idle_count, 0 );
+
+	/* We don't support anything other than bus-mastering ring mode,
+	 * but the ring can be in either AGP or PCI space for the ring
+	 * read pointer.
+	 */
+	if ( ( init->cce_mode != R128_PM4_192BM ) &&
+	     ( init->cce_mode != R128_PM4_128BM_64INDBM ) &&
+	     ( init->cce_mode != R128_PM4_64BM_128INDBM ) &&
+	     ( init->cce_mode != R128_PM4_64BM_64VCBM_64INDBM ) ) {
+		DRM_DEBUG( "Bad cce_mode!\n" );
+		dev->dev_private = (void *)dev_priv;
+		r128_do_cleanup_cce( dev );
+		return DRM_ERR(EINVAL);
+	}
+
+	switch ( init->cce_mode ) {
+	case R128_PM4_NONPM4:
+		dev_priv->cce_fifo_size = 0;
+		break;
+	case R128_PM4_192PIO:
+	case R128_PM4_192BM:
+		dev_priv->cce_fifo_size = 192;
+		break;
+	case R128_PM4_128PIO_64INDBM:
+	case R128_PM4_128BM_64INDBM:
+		dev_priv->cce_fifo_size = 128;
+		break;
+	case R128_PM4_64PIO_128INDBM:
+	case R128_PM4_64BM_128INDBM:
+	case R128_PM4_64PIO_64VCBM_64INDBM:
+	case R128_PM4_64BM_64VCBM_64INDBM:
+	case R128_PM4_64PIO_64VCPIO_64INDPIO:
+		dev_priv->cce_fifo_size = 64;
+		break;
+	}
+
+	switch ( init->fb_bpp ) {
+	case 16:
+		dev_priv->color_fmt = R128_DATATYPE_RGB565;
+		break;
+	case 32:
+	default:
+		dev_priv->color_fmt = R128_DATATYPE_ARGB8888;
+		break;
+	}
+	dev_priv->front_offset	= init->front_offset;
+	dev_priv->front_pitch	= init->front_pitch;
+	dev_priv->back_offset	= init->back_offset;
+	dev_priv->back_pitch	= init->back_pitch;
+
+	switch ( init->depth_bpp ) {
+	case 16:
+		dev_priv->depth_fmt = R128_DATATYPE_RGB565;
+		break;
+	case 24:
+	case 32:
+	default:
+		dev_priv->depth_fmt = R128_DATATYPE_ARGB8888;
+		break;
+	}
+	dev_priv->depth_offset	= init->depth_offset;
+	dev_priv->depth_pitch	= init->depth_pitch;
+	dev_priv->span_offset	= init->span_offset;
+
+	dev_priv->front_pitch_offset_c = (((dev_priv->front_pitch/8) << 21) |
+					  (dev_priv->front_offset >> 5));
+	dev_priv->back_pitch_offset_c = (((dev_priv->back_pitch/8) << 21) |
+					 (dev_priv->back_offset >> 5));
+	dev_priv->depth_pitch_offset_c = (((dev_priv->depth_pitch/8) << 21) |
+					  (dev_priv->depth_offset >> 5) |
+					  R128_DST_TILE);
+	dev_priv->span_pitch_offset_c = (((dev_priv->depth_pitch/8) << 21) |
+					 (dev_priv->span_offset >> 5));
+
+	DRM_GETSAREA();
+	
+	if(!dev_priv->sarea) {
+		DRM_ERROR("could not find sarea!\n");
+		dev->dev_private = (void *)dev_priv;
+		r128_do_cleanup_cce( dev );
+		return DRM_ERR(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;
+		r128_do_cleanup_cce( dev );
+		return DRM_ERR(EINVAL);
+	}
+	dev_priv->cce_ring = drm_core_findmap(dev, init->ring_offset);
+	if(!dev_priv->cce_ring) {
+		DRM_ERROR("could not find cce ring region!\n");
+		dev->dev_private = (void *)dev_priv;
+		r128_do_cleanup_cce( dev );
+		return DRM_ERR(EINVAL);
+	}
+	dev_priv->ring_rptr = drm_core_findmap(dev, init->ring_rptr_offset);
+	if(!dev_priv->ring_rptr) {
+		DRM_ERROR("could not find ring read pointer!\n");
+		dev->dev_private = (void *)dev_priv;
+		r128_do_cleanup_cce( dev );
+		return DRM_ERR(EINVAL);
+	}
+	dev->agp_buffer_map = drm_core_findmap(dev, init->buffers_offset);
+	if(!dev->agp_buffer_map) {
+		DRM_ERROR("could not find dma buffer region!\n");
+		dev->dev_private = (void *)dev_priv;
+		r128_do_cleanup_cce( dev );
+		return DRM_ERR(EINVAL);
+	}
+
+	if ( !dev_priv->is_pci ) {
+		dev_priv->agp_textures = drm_core_findmap(dev, init->agp_textures_offset);
+		if(!dev_priv->agp_textures) {
+			DRM_ERROR("could not find agp texture region!\n");
+			dev->dev_private = (void *)dev_priv;
+			r128_do_cleanup_cce( dev );
+			return DRM_ERR(EINVAL);
+		}
+	}
+
+	dev_priv->sarea_priv =
+		(drm_r128_sarea_t *)((u8 *)dev_priv->sarea->handle +
+				     init->sarea_priv_offset);
+
+#if __OS_HAS_AGP
+	if ( !dev_priv->is_pci ) {
+		drm_core_ioremap( dev_priv->cce_ring, dev );
+		drm_core_ioremap( dev_priv->ring_rptr, dev );
+		drm_core_ioremap( dev->agp_buffer_map, dev );
+		if(!dev_priv->cce_ring->handle ||
+		   !dev_priv->ring_rptr->handle ||
+		   !dev->agp_buffer_map->handle) {
+			DRM_ERROR("Could not ioremap agp regions!\n");
+			dev->dev_private = (void *)dev_priv;
+			r128_do_cleanup_cce( dev );
+			return DRM_ERR(ENOMEM);
+		}
+	} else
+#endif
+	{
+		dev_priv->cce_ring->handle =
+			(void *)dev_priv->cce_ring->offset;
+		dev_priv->ring_rptr->handle =
+			(void *)dev_priv->ring_rptr->offset;
+		dev->agp_buffer_map->handle = (void *)dev->agp_buffer_map->offset;
+	}
+
+#if __OS_HAS_AGP
+	if ( !dev_priv->is_pci )
+		dev_priv->cce_buffers_offset = dev->agp->base;
+	else
+#endif
+		dev_priv->cce_buffers_offset = dev->sg->handle;
+
+	dev_priv->ring.start = (u32 *)dev_priv->cce_ring->handle;
+	dev_priv->ring.end = ((u32 *)dev_priv->cce_ring->handle
+			      + init->ring_size / sizeof(u32));
+	dev_priv->ring.size = init->ring_size;
+	dev_priv->ring.size_l2qw = drm_order( init->ring_size / 8 );
+
+	dev_priv->ring.tail_mask =
+		(dev_priv->ring.size / sizeof(u32)) - 1;
+
+	dev_priv->ring.high_mark = 128;
+
+	dev_priv->sarea_priv->last_frame = 0;
+	R128_WRITE( R128_LAST_FRAME_REG, dev_priv->sarea_priv->last_frame );
+
+	dev_priv->sarea_priv->last_dispatch = 0;
+	R128_WRITE( R128_LAST_DISPATCH_REG,
+		    dev_priv->sarea_priv->last_dispatch );
+
+#if __OS_HAS_AGP
+	if ( dev_priv->is_pci ) {
+#endif
+		if (!drm_ati_pcigart_init( dev, &dev_priv->phys_pci_gart,
+     					    &dev_priv->bus_pci_gart) ) {
+			DRM_ERROR( "failed to init PCI GART!\n" );
+			dev->dev_private = (void *)dev_priv;
+			r128_do_cleanup_cce( dev );
+			return DRM_ERR(ENOMEM);
+		}
+		R128_WRITE( R128_PCI_GART_PAGE, dev_priv->bus_pci_gart );
+#if __OS_HAS_AGP
+	}
+#endif
+
+	r128_cce_init_ring_buffer( dev, dev_priv );
+	r128_cce_load_microcode( dev_priv );
+
+	dev->dev_private = (void *)dev_priv;
+
+	r128_do_engine_reset( dev );
+
+	return 0;
+}
+
+int r128_do_cleanup_cce( drm_device_t *dev )
+{
+
+	/* Make sure interrupts are disabled here because the uninstall ioctl
+	 * may not have been called from userspace and after dev_private
+	 * is freed, it's too late.
+	 */
+	if ( dev->irq_enabled ) drm_irq_uninstall(dev);
+
+	if ( dev->dev_private ) {
+		drm_r128_private_t *dev_priv = dev->dev_private;
+
+#if __OS_HAS_AGP
+		if ( !dev_priv->is_pci ) {
+			if ( dev_priv->cce_ring != NULL )
+				drm_core_ioremapfree( dev_priv->cce_ring, dev );
+			if ( dev_priv->ring_rptr != NULL )
+				drm_core_ioremapfree( dev_priv->ring_rptr, dev );
+			if ( dev->agp_buffer_map != NULL )
+				drm_core_ioremapfree( dev->agp_buffer_map, dev );
+		} else
+#endif
+		{
+			if (!drm_ati_pcigart_cleanup( dev,
+						dev_priv->phys_pci_gart,
+						dev_priv->bus_pci_gart ))
+				DRM_ERROR( "failed to cleanup PCI GART!\n" );
+		}
+
+		drm_free( dev->dev_private, sizeof(drm_r128_private_t),
+			   DRM_MEM_DRIVER );
+		dev->dev_private = NULL;
+	}
+
+	return 0;
+}
+
+int r128_cce_init( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_r128_init_t init;
+
+	DRM_DEBUG( "\n" );
+
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
+	DRM_COPY_FROM_USER_IOCTL( init, (drm_r128_init_t __user *)data, sizeof(init) );
+
+	switch ( init.func ) {
+	case R128_INIT_CCE:
+		return r128_do_init_cce( dev, &init );
+	case R128_CLEANUP_CCE:
+		return r128_do_cleanup_cce( dev );
+	}
+
+	return DRM_ERR(EINVAL);
+}
+
+int r128_cce_start( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	DRM_DEBUG( "\n" );
+
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
+	if ( dev_priv->cce_running || dev_priv->cce_mode == R128_PM4_NONPM4 ) {
+		DRM_DEBUG( "%s while CCE running\n", __FUNCTION__ );
+		return 0;
+	}
+
+	r128_do_cce_start( dev_priv );
+
+	return 0;
+}
+
+/* Stop the CCE.  The engine must have been idled before calling this
+ * routine.
+ */
+int r128_cce_stop( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	drm_r128_cce_stop_t stop;
+	int ret;
+	DRM_DEBUG( "\n" );
+
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
+	DRM_COPY_FROM_USER_IOCTL(stop, (drm_r128_cce_stop_t __user *)data, sizeof(stop) );
+
+	/* Flush any pending CCE commands.  This ensures any outstanding
+	 * commands are exectuted by the engine before we turn it off.
+	 */
+	if ( stop.flush ) {
+		r128_do_cce_flush( dev_priv );
+	}
+
+	/* If we fail to make the engine go idle, we return an error
+	 * code so that the DRM ioctl wrapper can try again.
+	 */
+	if ( stop.idle ) {
+		ret = r128_do_cce_idle( dev_priv );
+		if ( ret ) return ret;
+	}
+
+	/* Finally, we can turn off the CCE.  If the engine isn't idle,
+	 * we will get some dropped triangles as they won't be fully
+	 * rendered before the CCE is shut down.
+	 */
+	r128_do_cce_stop( dev_priv );
+
+	/* Reset the engine */
+	r128_do_engine_reset( dev );
+
+	return 0;
+}
+
+/* Just reset the CCE ring.  Called as part of an X Server engine reset.
+ */
+int r128_cce_reset( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	DRM_DEBUG( "\n" );
+
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
+	if ( !dev_priv ) {
+		DRM_DEBUG( "%s called before init done\n", __FUNCTION__ );
+		return DRM_ERR(EINVAL);
+	}
+
+	r128_do_cce_reset( dev_priv );
+
+	/* The CCE is no longer running after an engine reset */
+	dev_priv->cce_running = 0;
+
+	return 0;
+}
+
+int r128_cce_idle( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	DRM_DEBUG( "\n" );
+
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
+	if ( dev_priv->cce_running ) {
+		r128_do_cce_flush( dev_priv );
+	}
+
+	return r128_do_cce_idle( dev_priv );
+}
+
+int r128_engine_reset( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	DRM_DEBUG( "\n" );
+
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
+	return r128_do_engine_reset( dev );
+}
+
+int r128_fullscreen( DRM_IOCTL_ARGS )
+{
+	return DRM_ERR(EINVAL);
+}
+
+
+/* ================================================================
+ * Freelist management
+ */
+#define R128_BUFFER_USED	0xffffffff
+#define R128_BUFFER_FREE	0
+
+#if 0
+static int r128_freelist_init( drm_device_t *dev )
+{
+	drm_device_dma_t *dma = dev->dma;
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	drm_buf_t *buf;
+	drm_r128_buf_priv_t *buf_priv;
+	drm_r128_freelist_t *entry;
+	int i;
+
+	dev_priv->head = drm_alloc( sizeof(drm_r128_freelist_t),
+				     DRM_MEM_DRIVER );
+	if ( dev_priv->head == NULL )
+		return DRM_ERR(ENOMEM);
+
+	memset( dev_priv->head, 0, sizeof(drm_r128_freelist_t) );
+	dev_priv->head->age = R128_BUFFER_USED;
+
+	for ( i = 0 ; i < dma->buf_count ; i++ ) {
+		buf = dma->buflist[i];
+		buf_priv = buf->dev_private;
+
+		entry = drm_alloc( sizeof(drm_r128_freelist_t),
+				    DRM_MEM_DRIVER );
+		if ( !entry ) return DRM_ERR(ENOMEM);
+
+		entry->age = R128_BUFFER_FREE;
+		entry->buf = buf;
+		entry->prev = dev_priv->head;
+		entry->next = dev_priv->head->next;
+		if ( !entry->next )
+			dev_priv->tail = entry;
+
+		buf_priv->discard = 0;
+		buf_priv->dispatched = 0;
+		buf_priv->list_entry = entry;
+
+		dev_priv->head->next = entry;
+
+		if ( dev_priv->head->next )
+			dev_priv->head->next->prev = entry;
+	}
+
+	return 0;
+
+}
+#endif
+
+static drm_buf_t *r128_freelist_get( drm_device_t *dev )
+{
+	drm_device_dma_t *dma = dev->dma;
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	drm_r128_buf_priv_t *buf_priv;
+	drm_buf_t *buf;
+	int i, t;
+
+	/* FIXME: Optimize -- use freelist code */
+
+	for ( i = 0 ; i < dma->buf_count ; i++ ) {
+		buf = dma->buflist[i];
+		buf_priv = buf->dev_private;
+		if ( buf->filp == 0 )
+			return buf;
+	}
+
+	for ( t = 0 ; t < dev_priv->usec_timeout ; t++ ) {
+		u32 done_age = R128_READ( R128_LAST_DISPATCH_REG );
+
+		for ( i = 0 ; i < dma->buf_count ; i++ ) {
+			buf = dma->buflist[i];
+			buf_priv = buf->dev_private;
+			if ( buf->pending && buf_priv->age <= done_age ) {
+				/* The buffer has been processed, so it
+				 * can now be used.
+				 */
+				buf->pending = 0;
+				return buf;
+			}
+		}
+		DRM_UDELAY( 1 );
+	}
+
+	DRM_DEBUG( "returning NULL!\n" );
+	return NULL;
+}
+
+void r128_freelist_reset( drm_device_t *dev )
+{
+	drm_device_dma_t *dma = dev->dma;
+	int i;
+
+	for ( i = 0 ; i < dma->buf_count ; i++ ) {
+		drm_buf_t *buf = dma->buflist[i];
+		drm_r128_buf_priv_t *buf_priv = buf->dev_private;
+		buf_priv->age = 0;
+	}
+}
+
+
+/* ================================================================
+ * CCE command submission
+ */
+
+int r128_wait_ring( drm_r128_private_t *dev_priv, int n )
+{
+	drm_r128_ring_buffer_t *ring = &dev_priv->ring;
+	int i;
+
+	for ( i = 0 ; i < dev_priv->usec_timeout ; i++ ) {
+		r128_update_ring_snapshot( dev_priv );
+		if ( ring->space >= n )
+			return 0;
+		DRM_UDELAY( 1 );
+	}
+
+	/* FIXME: This is being ignored... */
+	DRM_ERROR( "failed!\n" );
+	return DRM_ERR(EBUSY);
+}
+
+static int r128_cce_get_buffers( DRMFILE filp, drm_device_t *dev, drm_dma_t *d )
+{
+	int i;
+	drm_buf_t *buf;
+
+	for ( i = d->granted_count ; i < d->request_count ; i++ ) {
+		buf = r128_freelist_get( dev );
+		if ( !buf ) return DRM_ERR(EAGAIN);
+
+		buf->filp = filp;
+
+		if ( DRM_COPY_TO_USER( &d->request_indices[i], &buf->idx,
+				   sizeof(buf->idx) ) )
+			return DRM_ERR(EFAULT);
+		if ( DRM_COPY_TO_USER( &d->request_sizes[i], &buf->total,
+				   sizeof(buf->total) ) )
+			return DRM_ERR(EFAULT);
+
+		d->granted_count++;
+	}
+	return 0;
+}
+
+int r128_cce_buffers( DRM_IOCTL_ARGS )
+{
+	DRM_DEVICE;
+	drm_device_dma_t *dma = dev->dma;
+	int ret = 0;
+	drm_dma_t __user *argp = (void __user *)data;
+	drm_dma_t d;
+
+	LOCK_TEST_WITH_RETURN( dev, filp );
+
+	DRM_COPY_FROM_USER_IOCTL( d, argp, sizeof(d) );
+
+	/* Please don't send us buffers.
+	 */
+	if ( d.send_count != 0 ) {
+		DRM_ERROR( "Process %d trying to send %d buffers via drmDMA\n",
+			   DRM_CURRENTPID, d.send_count );
+		return DRM_ERR(EINVAL);
+	}
+
+	/* We'll send you buffers.
+	 */
+	if ( d.request_count < 0 || d.request_count > dma->buf_count ) {
+		DRM_ERROR( "Process %d trying to get %d buffers (of %d max)\n",
+			   DRM_CURRENTPID, d.request_count, dma->buf_count );
+		return DRM_ERR(EINVAL);
+	}
+
+	d.granted_count = 0;
+
+	if ( d.request_count ) {
+		ret = r128_cce_get_buffers( filp, dev, &d );
+	}
+
+	DRM_COPY_TO_USER_IOCTL(argp, d, sizeof(d) );
+
+	return ret;
+}