*
* \author Rickard E. (Rik) Faith <faith@valinux.com>
* \author Gareth Hughes <gareth@valinux.com>
+ * \author Michel Dänzer <michel@tungstengraphics.com>
*/
/*
#include "drmP.h"
/** No-op. */
-int drm_adddraw(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_adddraw(DRM_IOCTL_ARGS)
{
+ DRM_DEVICE;
+ unsigned long irqflags;
+ int i, j = 0;
drm_draw_t draw;
- draw.handle = 0; /* NOOP */
+ spin_lock_irqsave(&dev->drw_lock, irqflags);
+
+ for (i = 0; i < dev->drw_bitfield_length; i++) {
+ u32 bitfield = dev->drw_bitfield[i];
+
+ if (bitfield == ~0)
+ continue;
+
+ for (; j < sizeof(bitfield); j++)
+ if (!(bitfield & (1 << j)))
+ goto done;
+ }
+done:
+
+ if (i == dev->drw_bitfield_length) {
+ u32 *new_bitfield = drm_realloc(dev->drw_bitfield, i * 4,
+ (i + 1) * 4, DRM_MEM_BUFS);
+
+ if (!new_bitfield) {
+ DRM_ERROR("Failed to allocate new drawable bitfield\n");
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ return DRM_ERR(ENOMEM);
+ }
+
+ if (32 * (i + 1) > dev->drw_info_length) {
+ void *new_info = drm_realloc(dev->drw_info,
+ dev->drw_info_length *
+ sizeof(drm_drawable_info_t*),
+ 32 * (i + 1) *
+ sizeof(drm_drawable_info_t*),
+ DRM_MEM_BUFS);
+
+ if (!new_info) {
+ DRM_ERROR("Failed to allocate new drawable info"
+ " array\n");
+
+ drm_free(new_bitfield, (i + 1) * 4, DRM_MEM_BUFS);
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ return DRM_ERR(ENOMEM);
+ }
+
+ dev->drw_info = (drm_drawable_info_t**)new_info;
+ }
+
+ new_bitfield[i] = 0;
+
+ dev->drw_bitfield = new_bitfield;
+ dev->drw_bitfield_length++;
+ }
+
+ dev->drw_bitfield[i] |= 1 << j;
+
+ draw.handle = i * sizeof(u32) + j;
DRM_DEBUG("%d\n", draw.handle);
- if (copy_to_user((drm_draw_t __user *) arg, &draw, sizeof(draw)))
- return -EFAULT;
+
+ dev->drw_info[draw.handle] = NULL;
+
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+
+ DRM_COPY_TO_USER_IOCTL((drm_draw_t __user *)data, draw, sizeof(draw));
+
return 0;
}
/** No-op. */
-int drm_rmdraw(struct inode *inode, struct file *filp,
- unsigned int cmd, unsigned long arg)
+int drm_rmdraw(DRM_IOCTL_ARGS)
{
- return 0; /* NOOP */
+ DRM_DEVICE;
+ drm_draw_t draw;
+ unsigned int idx, mod;
+ unsigned long irqflags;
+
+ DRM_COPY_FROM_USER_IOCTL(draw, (drm_draw_t __user *) data,
+ sizeof(draw));
+
+ idx = draw.handle / 32;
+ mod = draw.handle % 32;
+
+ spin_lock_irqsave(&dev->drw_lock, irqflags);
+
+ if (idx >= dev->drw_bitfield_length ||
+ !(dev->drw_bitfield[idx] & (1 << mod))) {
+ DRM_DEBUG("No such drawable %d\n", draw.handle);
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ return 0;
+ }
+
+ dev->drw_bitfield[idx] &= ~(1 << mod);
+
+ if (idx == (dev->drw_bitfield_length - 1)) {
+ while (idx >= 0 && !dev->drw_bitfield[idx])
+ --idx;
+
+ if (idx != draw.handle / 32) {
+ u32 *new_bitfield = drm_realloc(dev->drw_bitfield,
+ dev->drw_bitfield_length * 4,
+ (idx + 1) * 4,
+ DRM_MEM_BUFS);
+
+ if (new_bitfield || idx == -1) {
+ dev->drw_bitfield = new_bitfield;
+ dev->drw_bitfield_length = idx + 1;
+ }
+ }
+ }
+
+ if (32 * dev->drw_bitfield_length < dev->drw_info_length) {
+ void *new_info = drm_realloc(dev->drw_info,
+ dev->drw_info_length *
+ sizeof(drm_drawable_info_t*),
+ 32 * dev->drw_bitfield_length *
+ sizeof(drm_drawable_info_t*),
+ DRM_MEM_BUFS);
+
+ if (new_info || !dev->drw_bitfield_length) {
+ dev->drw_info = (drm_drawable_info_t**)new_info;
+ dev->drw_info_length = 32 * dev->drw_bitfield_length;
+ }
+ }
+
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+
+ DRM_DEBUG("%d\n", draw.handle);
+ return 0;
+}
+
+int drm_update_drawable_info(DRM_IOCTL_ARGS) {
+ DRM_DEVICE;
+ drm_update_draw_t update;
+ unsigned int id, idx, mod;
+ unsigned long irqflags;
+ drm_drawable_info_t *info;
+ void *new_data;
+
+ DRM_COPY_FROM_USER_IOCTL(update, (drm_update_draw_t __user *) data,
+ sizeof(update));
+
+ id = update.handle;
+ idx = id / 32;
+ mod = id % 32;
+
+ spin_lock_irqsave(&dev->drw_lock, irqflags);
+
+ if (idx >= dev->drw_bitfield_length ||
+ !(dev->drw_bitfield[idx] & (1 << mod))) {
+ DRM_ERROR("No such drawable %d\n", update.handle);
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ return DRM_ERR(EINVAL);
+ }
+
+ info = dev->drw_info[id];
+
+ if (!info) {
+ info = drm_calloc(1, sizeof(drm_drawable_info_t), DRM_MEM_BUFS);
+
+ if (!info) {
+ DRM_ERROR("Failed to allocate drawable info memory\n");
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ return DRM_ERR(ENOMEM);
+ }
+
+ dev->drw_info[id] = info;
+ }
+
+ switch (update.type) {
+ case DRM_DRAWABLE_CLIPRECTS:
+ if (update.num != info->num_rects) {
+ new_data = drm_alloc(update.num *
+ sizeof(drm_clip_rect_t),
+ DRM_MEM_BUFS);
+
+ if (!new_data) {
+ DRM_ERROR("Can't allocate cliprect memory\n");
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ return DRM_ERR(ENOMEM);
+ }
+
+ info->rects = new_data;
+ }
+
+ if (DRM_COPY_FROM_USER(info->rects,
+ (drm_clip_rect_t __user *)
+ (unsigned long)update.data,
+ update.num * sizeof(drm_clip_rect_t))) {
+ DRM_ERROR("Can't copy cliprects from userspace\n");
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ return DRM_ERR(EFAULT);
+ }
+
+ if (update.num != info->num_rects) {
+ drm_free(info->rects, info->num_rects *
+ sizeof(drm_clip_rect_t), DRM_MEM_BUFS);
+ info->num_rects = update.num;
+ }
+
+ DRM_DEBUG("Updated %d cliprects for drawable %d\n",
+ info->num_rects, id);
+ break;
+ default:
+ DRM_ERROR("Invalid update type %d\n", update.type);
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+ return DRM_ERR(EINVAL);
+ }
+
+ spin_unlock_irqrestore(&dev->drw_lock, irqflags);
+
+ return 0;
+}
+
+/**
+ * Caller must hold the drawable spinlock!
+ */
+drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id) {
+ unsigned int idx = id / 32, mod = id % 32;
+
+ if (idx >= dev->drw_bitfield_length ||
+ !(dev->drw_bitfield[idx] & (1 << mod))) {
+ DRM_DEBUG("No such drawable %d\n", id);
+ return NULL;
+ }
+
+ return dev->drw_info[id];
}
+EXPORT_SYMBOL(drm_get_drawable_info);
projects / linux-2.6 / blobdiff