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path: root/drivers/gpu/drm/via/via_mm.c
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Diffstat (limited to 'drivers/gpu/drm/via/via_mm.c')
-rw-r--r--drivers/gpu/drm/via/via_mm.c194
1 files changed, 194 insertions, 0 deletions
diff --git a/drivers/gpu/drm/via/via_mm.c b/drivers/gpu/drm/via/via_mm.c
new file mode 100644
index 00000000000..e64094916e4
--- /dev/null
+++ b/drivers/gpu/drm/via/via_mm.c
@@ -0,0 +1,194 @@
+/*
+ * 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 AUTHORS OR COPYRIGHT HOLDERS AND/OR THEIR 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 "via_drm.h"
+#include "via_drv.h"
+#include "drm_sman.h"
+
+#define VIA_MM_ALIGN_SHIFT 4
+#define VIA_MM_ALIGN_MASK ( (1 << VIA_MM_ALIGN_SHIFT) - 1)
+
+int via_agp_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+ drm_via_agp_t *agp = data;
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ int ret;
+
+ mutex_lock(&dev->struct_mutex);
+ ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_AGP, 0,
+ agp->size >> VIA_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;
+}
+
+int via_fb_init(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+ drm_via_fb_t *fb = data;
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ int ret;
+
+ mutex_lock(&dev->struct_mutex);
+ ret = drm_sman_set_range(&dev_priv->sman, VIA_MEM_VIDEO, 0,
+ fb->size >> VIA_MM_ALIGN_SHIFT);
+
+ 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;
+
+}
+
+int via_final_context(struct drm_device *dev, int context)
+{
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+
+ via_release_futex(dev_priv, context);
+
+ /* 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);
+ }
+ return 1;
+}
+
+void via_lastclose(struct drm_device *dev)
+{
+ drm_via_private_t *dev_priv = (drm_via_private_t *) 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;
+ mutex_unlock(&dev->struct_mutex);
+}
+
+int via_mem_alloc(struct drm_device *dev, void *data,
+ struct drm_file *file_priv)
+{
+ drm_via_mem_t *mem = data;
+ int retval = 0;
+ struct drm_memblock_item *item;
+ drm_via_private_t *dev_priv = (drm_via_private_t *) dev->dev_private;
+ unsigned long tmpSize;
+
+ if (mem->type > VIA_MEM_AGP) {
+ DRM_ERROR("Unknown memory type allocation\n");
+ return -EINVAL;
+ }
+ mutex_lock(&dev->struct_mutex);
+ if (0 == ((mem->type == VIA_MEM_VIDEO) ? 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;
+ }
+
+ tmpSize = (mem->size + VIA_MM_ALIGN_MASK) >> VIA_MM_ALIGN_SHIFT;
+ item = drm_sman_alloc(&dev_priv->sman, mem->type, tmpSize, 0,
+ (unsigned long)file_priv);
+ mutex_unlock(&dev->struct_mutex);
+ if (item) {
+ mem->offset = ((mem->type == VIA_MEM_VIDEO) ?
+ dev_priv->vram_offset : dev_priv->agp_offset) +
+ (item->mm->
+ offset(item->mm, item->mm_info) << VIA_MM_ALIGN_SHIFT);
+ mem->index = item->user_hash.key;
+ } else {
+ mem->offset = 0;
+ mem->size = 0;
+ mem->index = 0;
+ DRM_DEBUG("Video memory allocation failed\n");
+ retval = -ENOMEM;
+ }
+
+ return retval;
+}
+
+int via_mem_free(struct drm_device *dev, void *data, struct drm_file *file_priv)
+{
+ drm_via_private_t *dev_priv = dev->dev_private;
+ drm_via_mem_t *mem = data;
+ int ret;
+
+ mutex_lock(&dev->struct_mutex);
+ ret = drm_sman_free_key(&dev_priv->sman, mem->index);
+ mutex_unlock(&dev->struct_mutex);
+ DRM_DEBUG("free = 0x%lx\n", mem->index);
+
+ return ret;
+}
+
+
+void via_reclaim_buffers_locked(struct drm_device * dev,
+ struct drm_file *file_priv)
+{
+ drm_via_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;
+}