From c0e09200dc0813972442e550a5905a132768e56c Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Thu, 29 May 2008 10:09:59 +1000
Subject: drm: reorganise drm tree to be more future proof.

With the coming of kernel based modesetting and the memory manager stuff,
the everything in one directory approach was getting very ugly and
starting to be unmanageable.

This restructures the drm along the lines of other kernel components.

It creates a drivers/gpu/drm directory and moves the hw drivers into
subdirectores. It moves the includes into an include/drm, and
sets up the unifdef for the userspace headers we should be exporting.

Signed-off-by: Dave Airlie <airlied@redhat.com>
---
 drivers/gpu/drm/sis/sis_mm.c | 333 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 333 insertions(+)
 create mode 100644 drivers/gpu/drm/sis/sis_mm.c

(limited to 'drivers/gpu/drm/sis/sis_mm.c')

diff --git a/drivers/gpu/drm/sis/sis_mm.c b/drivers/gpu/drm/sis/sis_mm.c
new file mode 100644
index 000000000000..b3878770fce1
--- /dev/null
+++ b/drivers/gpu/drm/sis/sis_mm.c
@@ -0,0 +1,333 @@
+/**************************************************************************
+ *
+ * Copyright 2006 Tungsten Graphics, Inc., Bismarck, ND., USA.
+ * 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:
+ *    Thomas Hellström <thomas-at-tungstengraphics-dot-com>
+ */
+
+#include "drmP.h"
+#include "sis_drm.h"
+#include "sis_drv.h"
+
+#include <video/sisfb.h>
+
+#define VIDEO_TYPE 0
+#define AGP_TYPE 1
+
+
+#if defined(CONFIG_FB_SIS)
+/* fb management via fb device */
+
+#define SIS_MM_ALIGN_SHIFT 0
+#define SIS_MM_ALIGN_MASK 0
+
+static void *sis_sman_mm_allocate(void *private, unsigned long size,
+				  unsigned alignment)
+{
+	struct sis_memreq req;
+
+	req.size = size;
+	sis_malloc(&req);
+	if (req.size == 0)
+		return NULL;
+	else
+		return (void *)~req.offset;
+}
+
+static void sis_sman_mm_free(void *private, void *ref)
+{
+	sis_free(~((unsigned long)ref));
+}
+
+static void sis_sman_mm_destroy(void *private)
+{
+	;
+}
+
+static unsigned long sis_sman_mm_offset(void *private, void *ref)
+{
+	return ~((unsigned long)ref);
+}
+
+#else /* CONFIG_FB_SIS */
+
+#define SIS_MM_ALIGN_SHIFT 4
+#define SIS_MM_ALIGN_MASK ( (1 << SIS_MM_ALIGN_SHIFT) - 1)
+
+#endif /* CONFIG_FB_SIS */
+
+static int sis_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_fb_t *fb = data;
+	int ret;
+
+	mutex_lock(&dev->struct_mutex);
+#if defined(CONFIG_FB_SIS)
+	{
+		struct drm_sman_mm sman_mm;
+		sman_mm.private = (void *)0xFFFFFFFF;
+		sman_mm.allocate = sis_sman_mm_allocate;
+		sman_mm.free = sis_sman_mm_free;
+		sman_mm.destroy = sis_sman_mm_destroy;
+		sman_mm.offset = sis_sman_mm_offset;
+		ret =
+		    drm_sman_set_manager(&dev_priv->sman, VIDEO_TYPE, &sman_mm);
+	}
+#else
+	ret = drm_sman_set_range(&dev_priv->sman, VIDEO_TYPE, 0,
+				 fb->size >> SIS_MM_ALIGN_SHIFT);
+#endif
+
+	if (ret) {
+		DRM_ERROR("VRAM memory manager initialisation error\n");
+		mutex_unlock(&dev->struct_mutex);
+		return ret;
+	}
+
+	dev_priv->vram_initialized = 1;
+	dev_priv->vram_offset = fb->offset;
+
+	mutex_unlock(&dev->struct_mutex);
+	DRM_DEBUG("offset = %u, size = %u\n", fb->offset, fb->size);
+
+	return 0;
+}
+
+static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file_priv,
+			 void *data, int pool)
+{
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t *mem = data;
+	int retval = 0;
+	struct drm_memblock_item *item;
+
+	mutex_lock(&dev->struct_mutex);
+
+	if (0 == ((pool == 0) ? dev_priv->vram_initialized :
+		      dev_priv->agp_initialized)) {
+		DRM_ERROR
+		    ("Attempt to allocate from uninitialized memory manager.\n");
+		mutex_unlock(&dev->struct_mutex);
+		return -EINVAL;
+	}
+
+	mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
+	item = drm_sman_alloc(&dev_priv->sman, pool, mem->size, 0,
+			      (unsigned long)file_priv);
+
+	mutex_unlock(&dev->struct_mutex);
+	if (item) {
+		mem->offset = ((pool == 0) ?
+			      dev_priv->vram_offset : dev_priv->agp_offset) +
+		    (item->mm->
+		     offset(item->mm, item->mm_info) << SIS_MM_ALIGN_SHIFT);
+		mem->free = item->user_hash.key;
+		mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
+	} else {
+		mem->offset = 0;
+		mem->size = 0;
+		mem->free = 0;
+		retval = -ENOMEM;
+	}
+
+	DRM_DEBUG("alloc %d, size = %d, offset = %d\n", pool, mem->size,
+		  mem->offset);
+
+	return retval;
+}
+
+static int sis_drm_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_mem_t *mem = data;
+	int ret;
+
+	mutex_lock(&dev->struct_mutex);
+	ret = drm_sman_free_key(&dev_priv->sman, mem->free);
+	mutex_unlock(&dev->struct_mutex);
+	DRM_DEBUG("free = 0x%lx\n", mem->free);
+
+	return ret;
+}
+
+static int sis_fb_alloc(struct drm_device *dev, void *data,
+			struct drm_file *file_priv)
+{
+	return sis_drm_alloc(dev, file_priv, data, VIDEO_TYPE);
+}
+
+static int sis_ioctl_agp_init(struct drm_device *dev, void *data,
+			      struct drm_file *file_priv)
+{
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	drm_sis_agp_t *agp = data;
+	int ret;
+	dev_priv = dev->dev_private;
+
+	mutex_lock(&dev->struct_mutex);
+	ret = drm_sman_set_range(&dev_priv->sman, AGP_TYPE, 0,
+				 agp->size >> SIS_MM_ALIGN_SHIFT);
+
+	if (ret) {
+		DRM_ERROR("AGP memory manager initialisation error\n");
+		mutex_unlock(&dev->struct_mutex);
+		return ret;
+	}
+
+	dev_priv->agp_initialized = 1;
+	dev_priv->agp_offset = agp->offset;
+	mutex_unlock(&dev->struct_mutex);
+
+	DRM_DEBUG("offset = %u, size = %u\n", agp->offset, agp->size);
+	return 0;
+}
+
+static int sis_ioctl_agp_alloc(struct drm_device *dev, void *data,
+			       struct drm_file *file_priv)
+{
+
+	return sis_drm_alloc(dev, file_priv, data, AGP_TYPE);
+}
+
+static drm_local_map_t *sis_reg_init(struct drm_device *dev)
+{
+	struct drm_map_list *entry;
+	drm_local_map_t *map;
+
+	list_for_each_entry(entry, &dev->maplist, head) {
+		map = entry->map;
+		if (!map)
+			continue;
+		if (map->type == _DRM_REGISTERS) {
+			return map;
+		}
+	}
+	return NULL;
+}
+
+int sis_idle(struct drm_device *dev)
+{
+	drm_sis_private_t *dev_priv = dev->dev_private;
+	uint32_t idle_reg;
+	unsigned long end;
+	int i;
+
+	if (dev_priv->idle_fault)
+		return 0;
+
+	if (dev_priv->mmio == NULL) {
+		dev_priv->mmio = sis_reg_init(dev);
+		if (dev_priv->mmio == NULL) {
+			DRM_ERROR("Could not find register map.\n");
+			return 0;
+		}
+	}
+
+	/*
+	 * Implement a device switch here if needed
+	 */
+
+	if (dev_priv->chipset != SIS_CHIP_315)
+		return 0;
+
+	/*
+	 * Timeout after 3 seconds. We cannot use DRM_WAIT_ON here
+	 * because its polling frequency is too low.
+	 */
+
+	end = jiffies + (DRM_HZ * 3);
+
+	for (i=0; i<4; ++i) {
+		do {
+			idle_reg = SIS_READ(0x85cc);
+		} while ( !time_after_eq(jiffies, end) &&
+			  ((idle_reg & 0x80000000) != 0x80000000));
+	}
+
+	if (time_after_eq(jiffies, end)) {
+		DRM_ERROR("Graphics engine idle timeout. "
+			  "Disabling idle check\n");
+		dev_priv->idle_fault = 1;
+	}
+
+	/*
+	 * The caller never sees an error code. It gets trapped
+	 * in libdrm.
+	 */
+
+	return 0;
+}
+
+
+void sis_lastclose(struct drm_device *dev)
+{
+	drm_sis_private_t *dev_priv = dev->dev_private;
+
+	if (!dev_priv)
+		return;
+
+	mutex_lock(&dev->struct_mutex);
+	drm_sman_cleanup(&dev_priv->sman);
+	dev_priv->vram_initialized = 0;
+	dev_priv->agp_initialized = 0;
+	dev_priv->mmio = NULL;
+	mutex_unlock(&dev->struct_mutex);
+}
+
+void sis_reclaim_buffers_locked(struct drm_device * dev,
+				struct drm_file *file_priv)
+{
+	drm_sis_private_t *dev_priv = dev->dev_private;
+
+	mutex_lock(&dev->struct_mutex);
+	if (drm_sman_owner_clean(&dev_priv->sman, (unsigned long)file_priv)) {
+		mutex_unlock(&dev->struct_mutex);
+		return;
+	}
+
+	if (dev->driver->dma_quiescent) {
+		dev->driver->dma_quiescent(dev);
+	}
+
+	drm_sman_owner_cleanup(&dev_priv->sman, (unsigned long)file_priv);
+	mutex_unlock(&dev->struct_mutex);
+	return;
+}
+
+struct drm_ioctl_desc sis_ioctls[] = {
+	DRM_IOCTL_DEF(DRM_SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
+	DRM_IOCTL_DEF(DRM_SIS_FB_FREE, sis_drm_free, DRM_AUTH),
+	DRM_IOCTL_DEF(DRM_SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
+	DRM_IOCTL_DEF(DRM_SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
+	DRM_IOCTL_DEF(DRM_SIS_AGP_FREE, sis_drm_free, DRM_AUTH),
+	DRM_IOCTL_DEF(DRM_SIS_FB_INIT, sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
+};
+
+int sis_max_ioctl = DRM_ARRAY_SIZE(sis_ioctls);
-- 
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