--- /dev/null
+/**************************************************************************
+ *
+ * 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 <drm/drmP.h>
+#include <drm/sis_drm.h>
+#include "sis_drv.h"
+
+#include <video/sisfb.h>
+
+#define VIDEO_TYPE 0
+#define AGP_TYPE 1
+
+
+struct sis_memblock {
+ struct drm_mm_node mm_node;
+ struct sis_memreq req;
+ struct list_head owner_list;
+};
+
+#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
+/* fb management via fb device */
+
+#define SIS_MM_ALIGN_SHIFT 0
+#define SIS_MM_ALIGN_MASK 0
+
+#else /* CONFIG_FB_SIS[_MODULE] */
+
+#define SIS_MM_ALIGN_SHIFT 4
+#define SIS_MM_ALIGN_MASK ((1 << SIS_MM_ALIGN_SHIFT) - 1)
+
+#endif /* CONFIG_FB_SIS[_MODULE] */
+
+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;
+
+ mutex_lock(&dev->struct_mutex);
+ /* Unconditionally init the drm_mm, even though we don't use it when the
+ * fb sis driver is available - make cleanup easier. */
+ drm_mm_init(&dev_priv->vram_mm, 0, fb->size >> SIS_MM_ALIGN_SHIFT);
+
+ dev_priv->vram_initialized = 1;
+ dev_priv->vram_offset = fb->offset;
+
+ mutex_unlock(&dev->struct_mutex);
+ DRM_DEBUG("offset = %lu, size = %lu\n", fb->offset, fb->size);
+
+ return 0;
+}
+
+static int sis_drm_alloc(struct drm_device *dev, struct drm_file *file,
+ void *data, int pool)
+{
+ drm_sis_private_t *dev_priv = dev->dev_private;
+ drm_sis_mem_t *mem = data;
+ int retval = 0, user_key;
+ struct sis_memblock *item;
+ struct sis_file_private *file_priv = file->driver_priv;
+ unsigned long offset;
+
+ 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;
+ }
+
+ item = kzalloc(sizeof(*item), GFP_KERNEL);
+ if (!item) {
+ retval = -ENOMEM;
+ goto fail_alloc;
+ }
+
+ mem->size = (mem->size + SIS_MM_ALIGN_MASK) >> SIS_MM_ALIGN_SHIFT;
+ if (pool == AGP_TYPE) {
+ retval = drm_mm_insert_node(&dev_priv->agp_mm,
+ &item->mm_node,
+ mem->size, 0,
+ DRM_MM_SEARCH_DEFAULT);
+ offset = item->mm_node.start;
+ } else {
+#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
+ item->req.size = mem->size;
+ sis_malloc(&item->req);
+ if (item->req.size == 0)
+ retval = -ENOMEM;
+ offset = item->req.offset;
+#else
+ retval = drm_mm_insert_node(&dev_priv->vram_mm,
+ &item->mm_node,
+ mem->size, 0,
+ DRM_MM_SEARCH_DEFAULT);
+ offset = item->mm_node.start;
+#endif
+ }
+ if (retval)
+ goto fail_alloc;
+
+ retval = idr_alloc(&dev_priv->object_idr, item, 1, 0, GFP_KERNEL);
+ if (retval < 0)
+ goto fail_idr;
+ user_key = retval;
+
+ list_add(&item->owner_list, &file_priv->obj_list);
+ mutex_unlock(&dev->struct_mutex);
+
+ mem->offset = ((pool == 0) ?
+ dev_priv->vram_offset : dev_priv->agp_offset) +
+ (offset << SIS_MM_ALIGN_SHIFT);
+ mem->free = user_key;
+ mem->size = mem->size << SIS_MM_ALIGN_SHIFT;
+
+ return 0;
+
+fail_idr:
+ drm_mm_remove_node(&item->mm_node);
+fail_alloc:
+ kfree(item);
+ mutex_unlock(&dev->struct_mutex);
+
+ mem->offset = 0;
+ mem->size = 0;
+ mem->free = 0;
+
+ DRM_DEBUG("alloc %d, size = %ld, offset = %ld\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;
+ struct sis_memblock *obj;
+
+ mutex_lock(&dev->struct_mutex);
+ obj = idr_find(&dev_priv->object_idr, mem->free);
+ if (obj == NULL) {
+ mutex_unlock(&dev->struct_mutex);
+ return -EINVAL;
+ }
+
+ idr_remove(&dev_priv->object_idr, mem->free);
+ list_del(&obj->owner_list);
+ if (drm_mm_node_allocated(&obj->mm_node))
+ drm_mm_remove_node(&obj->mm_node);
+#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
+ else
+ sis_free(obj->req.offset);
+#endif
+ kfree(obj);
+ mutex_unlock(&dev->struct_mutex);
+ DRM_DEBUG("free = 0x%lx\n", mem->free);
+
+ return 0;
+}
+
+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;
+ dev_priv = dev->dev_private;
+
+ mutex_lock(&dev->struct_mutex);
+ drm_mm_init(&dev_priv->agp_mm, 0, agp->size >> SIS_MM_ALIGN_SHIFT);
+
+ dev_priv->agp_initialized = 1;
+ dev_priv->agp_offset = agp->offset;
+ mutex_unlock(&dev->struct_mutex);
+
+ DRM_DEBUG("offset = %lu, size = %lu\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 + (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);
+ if (dev_priv->vram_initialized) {
+ drm_mm_takedown(&dev_priv->vram_mm);
+ dev_priv->vram_initialized = 0;
+ }
+ if (dev_priv->agp_initialized) {
+ drm_mm_takedown(&dev_priv->agp_mm);
+ 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)
+{
+ struct sis_file_private *file_priv = file->driver_priv;
+ struct sis_memblock *entry, *next;
+
+ if (!(file->minor->master && file->master->lock.hw_lock))
+ return;
+
+ drm_legacy_idlelock_take(&file->master->lock);
+
+ mutex_lock(&dev->struct_mutex);
+ if (list_empty(&file_priv->obj_list)) {
+ mutex_unlock(&dev->struct_mutex);
+ drm_legacy_idlelock_release(&file->master->lock);
+
+ return;
+ }
+
+ sis_idle(dev);
+
+
+ list_for_each_entry_safe(entry, next, &file_priv->obj_list,
+ owner_list) {
+ list_del(&entry->owner_list);
+ if (drm_mm_node_allocated(&entry->mm_node))
+ drm_mm_remove_node(&entry->mm_node);
+#if defined(CONFIG_FB_SIS) || defined(CONFIG_FB_SIS_MODULE)
+ else
+ sis_free(entry->req.offset);
+#endif
+ kfree(entry);
+ }
+ mutex_unlock(&dev->struct_mutex);
+
+ drm_legacy_idlelock_release(&file->master->lock);
+
+ return;
+}
+
+const struct drm_ioctl_desc sis_ioctls[] = {
+ DRM_IOCTL_DEF_DRV(SIS_FB_ALLOC, sis_fb_alloc, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(SIS_FB_FREE, sis_drm_free, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(SIS_AGP_INIT, sis_ioctl_agp_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
+ DRM_IOCTL_DEF_DRV(SIS_AGP_ALLOC, sis_ioctl_agp_alloc, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(SIS_AGP_FREE, sis_drm_free, DRM_AUTH),
+ DRM_IOCTL_DEF_DRV(SIS_FB_INIT, sis_fb_init, DRM_AUTH | DRM_MASTER | DRM_ROOT_ONLY),
+};
+
+int sis_max_ioctl = ARRAY_SIZE(sis_ioctls);
Code Review / kvmfornfv.git / blobdiff