diff options
| -rw-r--r--[l---------] | bsd-core/drm_drawable.c | 52 | ||||
| -rw-r--r--[l---------] | linux-core/drm_drawable.c | 331 | ||||
| -rw-r--r-- | shared-core/drm_drawable.c | 330 |
3 files changed, 381 insertions, 332 deletions
diff --git a/bsd-core/drm_drawable.c b/bsd-core/drm_drawable.c index d64bbe10..379e0aa7 120000..100644 --- a/bsd-core/drm_drawable.c +++ b/bsd-core/drm_drawable.c @@ -1 +1,51 @@ -../shared-core/drm_drawable.c
\ No newline at end of file +/* drm_drawable.h -- IOCTLs for drawables -*- linux-c -*- + * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com + */ +/*- + * Copyright 1999 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 + * VA LINUX SYSTEMS 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: + * Rickard E. (Rik) Faith <faith@valinux.com> + * Gareth Hughes <gareth@valinux.com> + * + */ + +#include "drmP.h" + +int drm_adddraw(DRM_IOCTL_ARGS) +{ + drm_draw_t draw; + + draw.handle = 0; /* NOOP */ + DRM_DEBUG("%d\n", draw.handle); + + DRM_COPY_TO_USER_IOCTL( (drm_draw_t *)data, draw, sizeof(draw) ); + + return 0; +} + +int drm_rmdraw(DRM_IOCTL_ARGS) +{ + return 0; /* NOOP */ +} diff --git a/linux-core/drm_drawable.c b/linux-core/drm_drawable.c index d64bbe10..0817e321 120000..100644 --- a/linux-core/drm_drawable.c +++ b/linux-core/drm_drawable.c @@ -1 +1,330 @@ -../shared-core/drm_drawable.c
\ No newline at end of file +/** + * \file drm_drawable.c + * IOCTLs for drawables + * + * \author Rickard E. (Rik) Faith <faith@valinux.com> + * \author Gareth Hughes <gareth@valinux.com> + * \author Michel Dänzer <michel@tungstengraphics.com> + */ + +/* + * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com + * + * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. + * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. + * Copyright 2006 Tungsten Graphics, Inc., Bismarck, North Dakota. + * 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 + * VA LINUX SYSTEMS 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. + */ + +#include "drmP.h" + +/** + * Allocate drawable ID and memory to store information about it. + */ +int drm_adddraw(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + unsigned long irqflags; + int i, j; + u32 *bitfield = dev->drw_bitfield; + unsigned int bitfield_length = dev->drw_bitfield_length; + drm_drawable_info_t **info = dev->drw_info; + unsigned int info_length = dev->drw_info_length; + drm_draw_t draw; + + for (i = 0, j = 0; i < bitfield_length; i++) { + if (bitfield[i] == ~0) + continue; + + for (; j < 8 * sizeof(*bitfield); j++) + if (!(bitfield[i] & (1 << j))) + goto done; + } +done: + + if (i == bitfield_length) { + bitfield_length++; + + bitfield = drm_alloc(bitfield_length * sizeof(*bitfield), + DRM_MEM_BUFS); + + if (!bitfield) { + DRM_ERROR("Failed to allocate new drawable bitfield\n"); + return DRM_ERR(ENOMEM); + } + + if (8 * sizeof(*bitfield) * bitfield_length > info_length) { + info_length += 8 * sizeof(*bitfield); + + info = drm_alloc(info_length * sizeof(*info), + DRM_MEM_BUFS); + + if (!info) { + DRM_ERROR("Failed to allocate new drawable info" + " array\n"); + + drm_free(bitfield, + bitfield_length * sizeof(*bitfield), + DRM_MEM_BUFS); + return DRM_ERR(ENOMEM); + } + } + + bitfield[i] = 0; + } + + draw.handle = i * 8 * sizeof(*bitfield) + j + 1; + DRM_DEBUG("%d\n", draw.handle); + + spin_lock_irqsave(&dev->drw_lock, irqflags); + + bitfield[i] |= 1 << j; + info[draw.handle - 1] = NULL; + + if (bitfield != dev->drw_bitfield) { + memcpy(bitfield, dev->drw_bitfield, dev->drw_bitfield_length * + sizeof(*bitfield)); + drm_free(dev->drw_bitfield, sizeof(*bitfield) * + dev->drw_bitfield_length, DRM_MEM_BUFS); + dev->drw_bitfield = bitfield; + dev->drw_bitfield_length = bitfield_length; + } + + if (info != dev->drw_info) { + memcpy(info, dev->drw_info, dev->drw_info_length * + sizeof(*info)); + drm_free(dev->drw_info, sizeof(*info) * dev->drw_info_length, + DRM_MEM_BUFS); + dev->drw_info = info; + dev->drw_info_length = info_length; + } + + spin_unlock_irqrestore(&dev->drw_lock, irqflags); + + DRM_COPY_TO_USER_IOCTL((drm_draw_t __user *)data, draw, sizeof(draw)); + + return 0; +} + +/** + * Free drawable ID and memory to store information about it. + */ +int drm_rmdraw(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_draw_t draw; + int id, idx; + unsigned int shift; + unsigned long irqflags; + u32 *bitfield = dev->drw_bitfield; + unsigned int bitfield_length = dev->drw_bitfield_length; + drm_drawable_info_t **info = dev->drw_info; + unsigned int info_length = dev->drw_info_length; + + DRM_COPY_FROM_USER_IOCTL(draw, (drm_draw_t __user *) data, + sizeof(draw)); + + id = draw.handle - 1; + idx = id / (8 * sizeof(*bitfield)); + shift = id % (8 * sizeof(*bitfield)); + + if (idx < 0 || idx >= bitfield_length || + !(bitfield[idx] & (1 << shift))) { + DRM_DEBUG("No such drawable %d\n", draw.handle); + return 0; + } + + spin_lock_irqsave(&dev->drw_lock, irqflags); + + bitfield[idx] &= ~(1 << shift); + + spin_unlock_irqrestore(&dev->drw_lock, irqflags); + + if (info[id]) { + drm_free(info[id]->rects, info[id]->num_rects * + sizeof(drm_clip_rect_t), DRM_MEM_BUFS); + drm_free(info[id], sizeof(**info), DRM_MEM_BUFS); + } + + /* Can we shrink the arrays? */ + if (idx == bitfield_length - 1) { + while (idx >= 0 && !bitfield[idx]) + --idx; + + bitfield_length = idx + 1; + + if (idx != id / (8 * sizeof(*bitfield))) + bitfield = drm_alloc(bitfield_length * + sizeof(*bitfield), DRM_MEM_BUFS); + + if (!bitfield && bitfield_length) { + bitfield = dev->drw_bitfield; + bitfield_length = dev->drw_bitfield_length; + } + } + + if (bitfield != dev->drw_bitfield) { + info_length = 8 * sizeof(*bitfield) * bitfield_length; + + info = drm_alloc(info_length * sizeof(*info), DRM_MEM_BUFS); + + if (!info && info_length) { + info = dev->drw_info; + info_length = dev->drw_info_length; + } + + spin_lock_irqsave(&dev->drw_lock, irqflags); + + memcpy(bitfield, dev->drw_bitfield, bitfield_length * + sizeof(*bitfield)); + drm_free(dev->drw_bitfield, sizeof(*bitfield) * + dev->drw_bitfield_length, DRM_MEM_BUFS); + dev->drw_bitfield = bitfield; + dev->drw_bitfield_length = bitfield_length; + + if (info != dev->drw_info) { + memcpy(info, dev->drw_info, info_length * + sizeof(*info)); + drm_free(dev->drw_info, sizeof(*info) * + dev->drw_info_length, DRM_MEM_BUFS); + dev->drw_info = info; + dev->drw_info_length = info_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, shift, bitfield_length = dev->drw_bitfield_length; + u32 *bitfield = dev->drw_bitfield; + unsigned long irqflags; + drm_drawable_info_t *info; + drm_clip_rect_t *rects; + int err; + + DRM_COPY_FROM_USER_IOCTL(update, (drm_update_draw_t __user *) data, + sizeof(update)); + + id = update.handle - 1; + idx = id / (8 * sizeof(*bitfield)); + shift = id % (8 * sizeof(*bitfield)); + + if (idx < 0 || idx >= bitfield_length || + !(bitfield[idx] & (1 << shift))) { + DRM_ERROR("No such drawable %d\n", update.handle); + 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"); + return DRM_ERR(ENOMEM); + } + } + + switch (update.type) { + case DRM_DRAWABLE_CLIPRECTS: + if (update.num != info->num_rects) { + rects = drm_alloc(update.num * sizeof(drm_clip_rect_t), + DRM_MEM_BUFS); + } else + rects = info->rects; + + if (update.num && !rects) { + DRM_ERROR("Failed to allocate cliprect memory\n"); + err = DRM_ERR(ENOMEM); + goto error; + } + + if (update.num && DRM_COPY_FROM_USER(rects, + (drm_clip_rect_t __user *) + (unsigned long)update.data, + update.num * + sizeof(*rects))) { + DRM_ERROR("Failed to copy cliprects from userspace\n"); + err = DRM_ERR(EFAULT); + goto error; + } + + spin_lock_irqsave(&dev->drw_lock, irqflags); + + if (rects != info->rects) { + drm_free(info->rects, info->num_rects * + sizeof(drm_clip_rect_t), DRM_MEM_BUFS); + } + + info->rects = rects; + info->num_rects = update.num; + dev->drw_info[id] = info; + + spin_unlock_irqrestore(&dev->drw_lock, irqflags); + + DRM_DEBUG("Updated %d cliprects for drawable %d\n", + info->num_rects, id); + break; + default: + DRM_ERROR("Invalid update type %d\n", update.type); + return DRM_ERR(EINVAL); + } + + return 0; + +error: + if (!dev->drw_info[id]) + drm_free(info, sizeof(*info), DRM_MEM_BUFS); + else if (rects != dev->drw_info[id]->rects) + drm_free(rects, update.num * + sizeof(drm_clip_rect_t), DRM_MEM_BUFS); + + return err; +} + +/** + * Caller must hold the drawable spinlock! + */ +drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id) { + u32 *bitfield = dev->drw_bitfield; + unsigned int idx, shift; + + id--; + idx = id / (8 * sizeof(*bitfield)); + shift = id % (8 * sizeof(*bitfield)); + + if (idx < 0 || idx >= dev->drw_bitfield_length || + !(bitfield[idx] & (1 << shift))) { + DRM_DEBUG("No such drawable %d\n", id); + return NULL; + } + + return dev->drw_info[id]; +} +EXPORT_SYMBOL(drm_get_drawable_info); diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c deleted file mode 100644 index 0817e321..00000000 --- a/shared-core/drm_drawable.c +++ /dev/null @@ -1,330 +0,0 @@ -/** - * \file drm_drawable.c - * IOCTLs for drawables - * - * \author Rickard E. (Rik) Faith <faith@valinux.com> - * \author Gareth Hughes <gareth@valinux.com> - * \author Michel Dänzer <michel@tungstengraphics.com> - */ - -/* - * Created: Tue Feb 2 08:37:54 1999 by faith@valinux.com - * - * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas. - * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California. - * Copyright 2006 Tungsten Graphics, Inc., Bismarck, North Dakota. - * 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 - * VA LINUX SYSTEMS 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. - */ - -#include "drmP.h" - -/** - * Allocate drawable ID and memory to store information about it. - */ -int drm_adddraw(DRM_IOCTL_ARGS) -{ - DRM_DEVICE; - unsigned long irqflags; - int i, j; - u32 *bitfield = dev->drw_bitfield; - unsigned int bitfield_length = dev->drw_bitfield_length; - drm_drawable_info_t **info = dev->drw_info; - unsigned int info_length = dev->drw_info_length; - drm_draw_t draw; - - for (i = 0, j = 0; i < bitfield_length; i++) { - if (bitfield[i] == ~0) - continue; - - for (; j < 8 * sizeof(*bitfield); j++) - if (!(bitfield[i] & (1 << j))) - goto done; - } -done: - - if (i == bitfield_length) { - bitfield_length++; - - bitfield = drm_alloc(bitfield_length * sizeof(*bitfield), - DRM_MEM_BUFS); - - if (!bitfield) { - DRM_ERROR("Failed to allocate new drawable bitfield\n"); - return DRM_ERR(ENOMEM); - } - - if (8 * sizeof(*bitfield) * bitfield_length > info_length) { - info_length += 8 * sizeof(*bitfield); - - info = drm_alloc(info_length * sizeof(*info), - DRM_MEM_BUFS); - - if (!info) { - DRM_ERROR("Failed to allocate new drawable info" - " array\n"); - - drm_free(bitfield, - bitfield_length * sizeof(*bitfield), - DRM_MEM_BUFS); - return DRM_ERR(ENOMEM); - } - } - - bitfield[i] = 0; - } - - draw.handle = i * 8 * sizeof(*bitfield) + j + 1; - DRM_DEBUG("%d\n", draw.handle); - - spin_lock_irqsave(&dev->drw_lock, irqflags); - - bitfield[i] |= 1 << j; - info[draw.handle - 1] = NULL; - - if (bitfield != dev->drw_bitfield) { - memcpy(bitfield, dev->drw_bitfield, dev->drw_bitfield_length * - sizeof(*bitfield)); - drm_free(dev->drw_bitfield, sizeof(*bitfield) * - dev->drw_bitfield_length, DRM_MEM_BUFS); - dev->drw_bitfield = bitfield; - dev->drw_bitfield_length = bitfield_length; - } - - if (info != dev->drw_info) { - memcpy(info, dev->drw_info, dev->drw_info_length * - sizeof(*info)); - drm_free(dev->drw_info, sizeof(*info) * dev->drw_info_length, - DRM_MEM_BUFS); - dev->drw_info = info; - dev->drw_info_length = info_length; - } - - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - - DRM_COPY_TO_USER_IOCTL((drm_draw_t __user *)data, draw, sizeof(draw)); - - return 0; -} - -/** - * Free drawable ID and memory to store information about it. - */ -int drm_rmdraw(DRM_IOCTL_ARGS) -{ - DRM_DEVICE; - drm_draw_t draw; - int id, idx; - unsigned int shift; - unsigned long irqflags; - u32 *bitfield = dev->drw_bitfield; - unsigned int bitfield_length = dev->drw_bitfield_length; - drm_drawable_info_t **info = dev->drw_info; - unsigned int info_length = dev->drw_info_length; - - DRM_COPY_FROM_USER_IOCTL(draw, (drm_draw_t __user *) data, - sizeof(draw)); - - id = draw.handle - 1; - idx = id / (8 * sizeof(*bitfield)); - shift = id % (8 * sizeof(*bitfield)); - - if (idx < 0 || idx >= bitfield_length || - !(bitfield[idx] & (1 << shift))) { - DRM_DEBUG("No such drawable %d\n", draw.handle); - return 0; - } - - spin_lock_irqsave(&dev->drw_lock, irqflags); - - bitfield[idx] &= ~(1 << shift); - - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - - if (info[id]) { - drm_free(info[id]->rects, info[id]->num_rects * - sizeof(drm_clip_rect_t), DRM_MEM_BUFS); - drm_free(info[id], sizeof(**info), DRM_MEM_BUFS); - } - - /* Can we shrink the arrays? */ - if (idx == bitfield_length - 1) { - while (idx >= 0 && !bitfield[idx]) - --idx; - - bitfield_length = idx + 1; - - if (idx != id / (8 * sizeof(*bitfield))) - bitfield = drm_alloc(bitfield_length * - sizeof(*bitfield), DRM_MEM_BUFS); - - if (!bitfield && bitfield_length) { - bitfield = dev->drw_bitfield; - bitfield_length = dev->drw_bitfield_length; - } - } - - if (bitfield != dev->drw_bitfield) { - info_length = 8 * sizeof(*bitfield) * bitfield_length; - - info = drm_alloc(info_length * sizeof(*info), DRM_MEM_BUFS); - - if (!info && info_length) { - info = dev->drw_info; - info_length = dev->drw_info_length; - } - - spin_lock_irqsave(&dev->drw_lock, irqflags); - - memcpy(bitfield, dev->drw_bitfield, bitfield_length * - sizeof(*bitfield)); - drm_free(dev->drw_bitfield, sizeof(*bitfield) * - dev->drw_bitfield_length, DRM_MEM_BUFS); - dev->drw_bitfield = bitfield; - dev->drw_bitfield_length = bitfield_length; - - if (info != dev->drw_info) { - memcpy(info, dev->drw_info, info_length * - sizeof(*info)); - drm_free(dev->drw_info, sizeof(*info) * - dev->drw_info_length, DRM_MEM_BUFS); - dev->drw_info = info; - dev->drw_info_length = info_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, shift, bitfield_length = dev->drw_bitfield_length; - u32 *bitfield = dev->drw_bitfield; - unsigned long irqflags; - drm_drawable_info_t *info; - drm_clip_rect_t *rects; - int err; - - DRM_COPY_FROM_USER_IOCTL(update, (drm_update_draw_t __user *) data, - sizeof(update)); - - id = update.handle - 1; - idx = id / (8 * sizeof(*bitfield)); - shift = id % (8 * sizeof(*bitfield)); - - if (idx < 0 || idx >= bitfield_length || - !(bitfield[idx] & (1 << shift))) { - DRM_ERROR("No such drawable %d\n", update.handle); - 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"); - return DRM_ERR(ENOMEM); - } - } - - switch (update.type) { - case DRM_DRAWABLE_CLIPRECTS: - if (update.num != info->num_rects) { - rects = drm_alloc(update.num * sizeof(drm_clip_rect_t), - DRM_MEM_BUFS); - } else - rects = info->rects; - - if (update.num && !rects) { - DRM_ERROR("Failed to allocate cliprect memory\n"); - err = DRM_ERR(ENOMEM); - goto error; - } - - if (update.num && DRM_COPY_FROM_USER(rects, - (drm_clip_rect_t __user *) - (unsigned long)update.data, - update.num * - sizeof(*rects))) { - DRM_ERROR("Failed to copy cliprects from userspace\n"); - err = DRM_ERR(EFAULT); - goto error; - } - - spin_lock_irqsave(&dev->drw_lock, irqflags); - - if (rects != info->rects) { - drm_free(info->rects, info->num_rects * - sizeof(drm_clip_rect_t), DRM_MEM_BUFS); - } - - info->rects = rects; - info->num_rects = update.num; - dev->drw_info[id] = info; - - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - - DRM_DEBUG("Updated %d cliprects for drawable %d\n", - info->num_rects, id); - break; - default: - DRM_ERROR("Invalid update type %d\n", update.type); - return DRM_ERR(EINVAL); - } - - return 0; - -error: - if (!dev->drw_info[id]) - drm_free(info, sizeof(*info), DRM_MEM_BUFS); - else if (rects != dev->drw_info[id]->rects) - drm_free(rects, update.num * - sizeof(drm_clip_rect_t), DRM_MEM_BUFS); - - return err; -} - -/** - * Caller must hold the drawable spinlock! - */ -drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id) { - u32 *bitfield = dev->drw_bitfield; - unsigned int idx, shift; - - id--; - idx = id / (8 * sizeof(*bitfield)); - shift = id % (8 * sizeof(*bitfield)); - - if (idx < 0 || idx >= dev->drw_bitfield_length || - !(bitfield[idx] & (1 << shift))) { - DRM_DEBUG("No such drawable %d\n", id); - return NULL; - } - - return dev->drw_info[id]; -} -EXPORT_SYMBOL(drm_get_drawable_info); |