Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 937 insertions, 0 deletions

diff --git a/kernel/drivers/gpu/drm/r128/r128_cce.c b/kernel/drivers/gpu/drm/r128/r128_cce.c
new file mode 100644
index 000000000..2c45ac9c1
--- /dev/null
+++ b/kernel/drivers/gpu/drm/r128/r128_cce.c
@@ -0,0 +1,937 @@
+/* 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 <linux/firmware.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+
+#include <drm/drmP.h>
+#include <drm/r128_drm.h>
+#include "r128_drv.h"
+
+#define R128_FIFO_DEBUG		0
+
+#define FIRMWARE_NAME		"r128/r128_cce.bin"
+
+MODULE_FIRMWARE(FIRMWARE_NAME);
+
+static int R128_READ_PLL(struct drm_device *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 -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 -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 -EBUSY;
+}
+
+/* ================================================================
+ * CCE control, initialization
+ */
+
+/* Load the microcode for the CCE */
+static int r128_cce_load_microcode(drm_r128_private_t *dev_priv)
+{
+	struct platform_device *pdev;
+	const struct firmware *fw;
+	const __be32 *fw_data;
+	int rc, i;
+
+	DRM_DEBUG("\n");
+
+	pdev = platform_device_register_simple("r128_cce", 0, NULL, 0);
+	if (IS_ERR(pdev)) {
+		printk(KERN_ERR "r128_cce: Failed to register firmware\n");
+		return PTR_ERR(pdev);
+	}
+	rc = request_firmware(&fw, FIRMWARE_NAME, &pdev->dev);
+	platform_device_unregister(pdev);
+	if (rc) {
+		printk(KERN_ERR "r128_cce: Failed to load firmware \"%s\"\n",
+		       FIRMWARE_NAME);
+		return rc;
+	}
+
+	if (fw->size != 256 * 8) {
+		printk(KERN_ERR
+		       "r128_cce: Bogus length %zu in firmware \"%s\"\n",
+		       fw->size, FIRMWARE_NAME);
+		rc = -EINVAL;
+		goto out_release;
+	}
+
+	r128_do_wait_for_idle(dev_priv);
+
+	fw_data = (const __be32 *)fw->data;
+	R128_WRITE(R128_PM4_MICROCODE_ADDR, 0);
+	for (i = 0; i < 256; i++) {
+		R128_WRITE(R128_PM4_MICROCODE_DATAH,
+			   be32_to_cpup(&fw_data[i * 2]));
+		R128_WRITE(R128_PM4_MICROCODE_DATAL,
+			   be32_to_cpup(&fw_data[i * 2 + 1]));
+	}
+
+out_release:
+	release_firmware(fw);
+	return rc;
+}
+
+/* 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 -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(struct drm_device *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(struct drm_device *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 -
+		    (unsigned long)dev->sg->virtual;
+
+	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(struct drm_device *dev, drm_r128_init_t *init)
+{
+	drm_r128_private_t *dev_priv;
+	int rc;
+
+	DRM_DEBUG("\n");
+
+	if (dev->dev_private) {
+		DRM_DEBUG("called when already initialized\n");
+		return -EINVAL;
+	}
+
+	dev_priv = kzalloc(sizeof(drm_r128_private_t), GFP_KERNEL);
+	if (dev_priv == NULL)
+		return -ENOMEM;
+
+	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 -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 -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 -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));
+
+	dev_priv->sarea = drm_legacy_getsarea(dev);
+	if (!dev_priv->sarea) {
+		DRM_ERROR("could not find sarea!\n");
+		dev->dev_private = (void *)dev_priv;
+		r128_do_cleanup_cce(dev);
+		return -EINVAL;
+	}
+
+	dev_priv->mmio = drm_legacy_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 -EINVAL;
+	}
+	dev_priv->cce_ring = drm_legacy_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 -EINVAL;
+	}
+	dev_priv->ring_rptr = drm_legacy_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 -EINVAL;
+	}
+	dev->agp_buffer_token = init->buffers_offset;
+	dev->agp_buffer_map = drm_legacy_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 -EINVAL;
+	}
+
+	if (!dev_priv->is_pci) {
+		dev_priv->agp_textures =
+		    drm_legacy_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 -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_legacy_ioremap_wc(dev_priv->cce_ring, dev);
+		drm_legacy_ioremap_wc(dev_priv->ring_rptr, dev);
+		drm_legacy_ioremap_wc(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 -ENOMEM;
+		}
+	} else
+#endif
+	{
+		dev_priv->cce_ring->handle =
+			(void *)(unsigned long)dev_priv->cce_ring->offset;
+		dev_priv->ring_rptr->handle =
+			(void *)(unsigned long)dev_priv->ring_rptr->offset;
+		dev->agp_buffer_map->handle =
+			(void *)(unsigned long)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 = (unsigned long)dev->sg->virtual;
+
+	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 = order_base_2(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
+		dev_priv->gart_info.table_mask = DMA_BIT_MASK(32);
+		dev_priv->gart_info.gart_table_location = DRM_ATI_GART_MAIN;
+		dev_priv->gart_info.table_size = R128_PCIGART_TABLE_SIZE;
+		dev_priv->gart_info.addr = NULL;
+		dev_priv->gart_info.bus_addr = 0;
+		dev_priv->gart_info.gart_reg_if = DRM_ATI_GART_PCI;
+		if (!drm_ati_pcigart_init(dev, &dev_priv->gart_info)) {
+			DRM_ERROR("failed to init PCI GART!\n");
+			dev->dev_private = (void *)dev_priv;
+			r128_do_cleanup_cce(dev);
+			return -ENOMEM;
+		}
+		R128_WRITE(R128_PCI_GART_PAGE, dev_priv->gart_info.bus_addr);
+#if __OS_HAS_AGP
+	}
+#endif
+
+	r128_cce_init_ring_buffer(dev, dev_priv);
+	rc = r128_cce_load_microcode(dev_priv);
+
+	dev->dev_private = (void *)dev_priv;
+
+	r128_do_engine_reset(dev);
+
+	if (rc) {
+		DRM_ERROR("Failed to load firmware!\n");
+		r128_do_cleanup_cce(dev);
+	}
+
+	return rc;
+}
+
+int r128_do_cleanup_cce(struct drm_device *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_legacy_ioremapfree(dev_priv->cce_ring, dev);
+			if (dev_priv->ring_rptr != NULL)
+				drm_legacy_ioremapfree(dev_priv->ring_rptr, dev);
+			if (dev->agp_buffer_map != NULL) {
+				drm_legacy_ioremapfree(dev->agp_buffer_map, dev);
+				dev->agp_buffer_map = NULL;
+			}
+		} else
+#endif
+		{
+			if (dev_priv->gart_info.bus_addr)
+				if (!drm_ati_pcigart_cleanup(dev,
+							&dev_priv->gart_info))
+					DRM_ERROR
+					    ("failed to cleanup PCI GART!\n");
+		}
+
+		kfree(dev->dev_private);
+		dev->dev_private = NULL;
+	}
+
+	return 0;
+}
+
+int r128_cce_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	drm_r128_init_t *init = data;
+
+	DRM_DEBUG("\n");
+
+	LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+	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 -EINVAL;
+}
+
+int r128_cce_start(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	DRM_DEBUG("\n");
+
+	LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+	DEV_INIT_TEST_WITH_RETURN(dev_priv);
+
+	if (dev_priv->cce_running || dev_priv->cce_mode == R128_PM4_NONPM4) {
+		DRM_DEBUG("while CCE running\n");
+		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(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	drm_r128_cce_stop_t *stop = data;
+	int ret;
+	DRM_DEBUG("\n");
+
+	LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+	DEV_INIT_TEST_WITH_RETURN(dev_priv);
+
+	/* 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(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	DRM_DEBUG("\n");
+
+	LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+	DEV_INIT_TEST_WITH_RETURN(dev_priv);
+
+	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(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	DRM_DEBUG("\n");
+
+	LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+	DEV_INIT_TEST_WITH_RETURN(dev_priv);
+
+	if (dev_priv->cce_running)
+		r128_do_cce_flush(dev_priv);
+
+	return r128_do_cce_idle(dev_priv);
+}
+
+int r128_engine_reset(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	DRM_DEBUG("\n");
+
+	LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+	DEV_INIT_TEST_WITH_RETURN(dev->dev_private);
+
+	return r128_do_engine_reset(dev);
+}
+
+int r128_fullscreen(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	return -EINVAL;
+}
+
+/* ================================================================
+ * Freelist management
+ */
+#define R128_BUFFER_USED	0xffffffff
+#define R128_BUFFER_FREE	0
+
+#if 0
+static int r128_freelist_init(struct drm_device *dev)
+{
+	struct drm_device_dma *dma = dev->dma;
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	struct drm_buf *buf;
+	drm_r128_buf_priv_t *buf_priv;
+	drm_r128_freelist_t *entry;
+	int i;
+
+	dev_priv->head = kzalloc(sizeof(drm_r128_freelist_t), GFP_KERNEL);
+	if (dev_priv->head == NULL)
+		return -ENOMEM;
+
+	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 = kmalloc(sizeof(drm_r128_freelist_t), GFP_KERNEL);
+		if (!entry)
+			return -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 struct drm_buf *r128_freelist_get(struct drm_device * dev)
+{
+	struct drm_device_dma *dma = dev->dma;
+	drm_r128_private_t *dev_priv = dev->dev_private;
+	drm_r128_buf_priv_t *buf_priv;
+	struct drm_buf *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->file_priv)
+			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(struct drm_device *dev)
+{
+	struct drm_device_dma *dma = dev->dma;
+	int i;
+
+	for (i = 0; i < dma->buf_count; i++) {
+		struct drm_buf *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 -EBUSY;
+}
+
+static int r128_cce_get_buffers(struct drm_device *dev,
+				struct drm_file *file_priv,
+				struct drm_dma *d)
+{
+	int i;
+	struct drm_buf *buf;
+
+	for (i = d->granted_count; i < d->request_count; i++) {
+		buf = r128_freelist_get(dev);
+		if (!buf)
+			return -EAGAIN;
+
+		buf->file_priv = file_priv;
+
+		if (copy_to_user(&d->request_indices[i], &buf->idx,
+				     sizeof(buf->idx)))
+			return -EFAULT;
+		if (copy_to_user(&d->request_sizes[i], &buf->total,
+				     sizeof(buf->total)))
+			return -EFAULT;
+
+		d->granted_count++;
+	}
+	return 0;
+}
+
+int r128_cce_buffers(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	struct drm_device_dma *dma = dev->dma;
+	int ret = 0;
+	struct drm_dma *d = data;
+
+	LOCK_TEST_WITH_RETURN(dev, file_priv);
+
+	/* 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 -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 -EINVAL;
+	}
+
+	d->granted_count = 0;
+
+	if (d->request_count)
+		ret = r128_cce_get_buffers(dev, file_priv, d);
+
+	return ret;
+}