From 29598e5253ff5c085ccf63580fd24b84db848424 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Tue, 22 Aug 2006 16:40:07 +0200 Subject: Add support for tracking drawable information to core Actually make the existing ioctls for adding and removing drawables do something useful, and add another ioctl for the X server to update drawable information. The only kind of drawable information tracked so far is cliprects. --- shared-core/drm_drawable.c | 256 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 256 insertions(+) create mode 100644 shared-core/drm_drawable.c (limited to 'shared-core/drm_drawable.c') diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c new file mode 100644 index 00000000..ca6eb81c --- /dev/null +++ b/shared-core/drm_drawable.c @@ -0,0 +1,256 @@ +/** + * \file drm_drawable.c + * IOCTLs for drawables + * + * \author Rickard E. (Rik) Faith + * \author Gareth Hughes + * \author Michel Dänzer + */ + +/* + * 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. + */ + +#include "drmP.h" + +/** No-op. */ +int drm_adddraw(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + unsigned int irqflags; + int i, j = 0; + drm_draw_t draw; + + 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); + + 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(DRM_IOCTL_ARGS) +{ + DRM_DEVICE; + drm_draw_t draw; + unsigned int idx, mod; + unsigned int 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); + + return 0; +} + +int drm_update_drawable_info(DRM_IOCTL_ARGS) { + DRM_DEVICE; + drm_update_draw_t update; + unsigned int id, idx, mod; + unsigned int 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: + new_data = drm_alloc(update.num * sizeof(drm_clip_rect_t), + DRM_MEM_BUFS); + + if (!new_data) { + DRM_ERROR("Failed to allocate cliprect memory\n"); + spin_unlock_irqrestore(&dev->drw_lock, irqflags); + return DRM_ERR(ENOMEM); + } + + if (DRM_COPY_FROM_USER(new_data, + (drm_clip_rect_t __user *) + (unsigned long)update.data, + update.num * sizeof(drm_clip_rect_t))) { + DRM_ERROR("Failed to copy cliprects from userspace\n"); + spin_unlock_irqrestore(&dev->drw_lock, irqflags); + return DRM_ERR(EFAULT); + } + + drm_free(info->rects, info->num_rects * sizeof(drm_clip_rect_t), + DRM_MEM_BUFS); + + info->rects = new_data; + info->num_rects = update.num; + break; + } + + 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]; +} -- cgit v1.2.3 From af48be1096221d551319c67a9e782b50ef58fefd Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Wed, 23 Aug 2006 16:04:41 +0200 Subject: Only reallocate cliprect memory if the number of cliprects changes. Also improve diagnostic output. --- shared-core/drm_drawable.c | 37 +++++++++++++++++++++++++------------ 1 file changed, 25 insertions(+), 12 deletions(-) (limited to 'shared-core/drm_drawable.c') diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c index ca6eb81c..511f3eae 100644 --- a/shared-core/drm_drawable.c +++ b/shared-core/drm_drawable.c @@ -166,6 +166,7 @@ int drm_rmdraw(DRM_IOCTL_ARGS) spin_unlock_irqrestore(&dev->drw_lock, irqflags); + DRM_DEBUG("%d\n", draw.handle); return 0; } @@ -209,30 +210,42 @@ int drm_update_drawable_info(DRM_IOCTL_ARGS) { switch (update.type) { case DRM_DRAWABLE_CLIPRECTS: - new_data = drm_alloc(update.num * sizeof(drm_clip_rect_t), - DRM_MEM_BUFS); + 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("Failed to allocate cliprect memory\n"); - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - return DRM_ERR(ENOMEM); + 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(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("Failed to copy cliprects from userspace\n"); + DRM_ERROR("Can't copy cliprects from userspace\n"); spin_unlock_irqrestore(&dev->drw_lock, irqflags); return DRM_ERR(EFAULT); } - drm_free(info->rects, info->num_rects * sizeof(drm_clip_rect_t), - DRM_MEM_BUFS); + 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; + } - info->rects = new_data; - 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); -- cgit v1.2.3 From 43f8675534c7e95efbc92eaf2c8cc43aef95f125 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Wed, 23 Aug 2006 19:00:26 +0200 Subject: Export drm_get_drawable_info symbol from core. --- shared-core/drm_drawable.c | 1 + 1 file changed, 1 insertion(+) (limited to 'shared-core/drm_drawable.c') diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c index 511f3eae..0a357948 100644 --- a/shared-core/drm_drawable.c +++ b/shared-core/drm_drawable.c @@ -267,3 +267,4 @@ drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id) return dev->drw_info[id]; } +EXPORT_SYMBOL(drm_get_drawable_info); -- cgit v1.2.3 From 23d2833aaa37a33b9ddcf06cc796f59befc0d360 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Fri, 25 Aug 2006 18:55:55 +0200 Subject: Locking and memory management fixes. --- shared-core/drm_drawable.c | 261 ++++++++++++++++++++++++++------------------- 1 file changed, 154 insertions(+), 107 deletions(-) (limited to 'shared-core/drm_drawable.c') diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c index 0a357948..81eb9f08 100644 --- a/shared-core/drm_drawable.c +++ b/shared-core/drm_drawable.c @@ -36,70 +36,86 @@ #include "drmP.h" -/** No-op. */ +/** + * Allocate drawable ID and memory to store information about it. + */ int drm_adddraw(DRM_IOCTL_ARGS) { DRM_DEVICE; unsigned int irqflags; - int i, j = 0; + 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; - 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) + for (i = 0, j = 0; i < bitfield_length; i++) { + if (bitfield[i] == ~0) continue; - for (; j < sizeof(bitfield); j++) - if (!(bitfield & (1 << j))) + for (; j < 8 * sizeof(*bitfield); j++) + if (!(bitfield[i] & (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 (i == bitfield_length) { + bitfield_length++; + + bitfield = drm_alloc(bitfield_length * sizeof(*bitfield), + DRM_MEM_BUFS); - if (!new_bitfield) { + if (!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 (8 * sizeof(*bitfield) * bitfield_length > info_length) { + info_length += 8 * sizeof(*bitfield); - if (!new_info) { + info = drm_alloc(info_length * sizeof(*info), + DRM_MEM_BUFS); + + if (!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); + drm_free(bitfield, + bitfield_length * sizeof(*bitfield), + DRM_MEM_BUFS); 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++; + bitfield[i] = 0; } - dev->drw_bitfield[i] |= 1 << j; - - draw.handle = i * sizeof(u32) + j; + draw.handle = i * 8 * sizeof(*bitfield) + j; DRM_DEBUG("%d\n", draw.handle); - dev->drw_info[draw.handle] = NULL; + spin_lock_irqsave(&dev->drw_lock, irqflags); + + bitfield[i] |= 1 << j; + info[draw.handle] = 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); @@ -108,63 +124,85 @@ done: return 0; } -/** No-op. */ +/** + * Free drawable ID and memory to store information about it. + */ int drm_rmdraw(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_draw_t draw; - unsigned int idx, mod; + unsigned int idx, shift; unsigned int 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)); - idx = draw.handle / 32; - mod = draw.handle % 32; + idx = draw.handle / (8 * sizeof(*bitfield)); + shift = draw.handle % (8 * sizeof(*bitfield)); - spin_lock_irqsave(&dev->drw_lock, irqflags); - - if (idx >= dev->drw_bitfield_length || - !(dev->drw_bitfield[idx] & (1 << mod))) { + if (idx >= bitfield_length || + !(bitfield[idx] & (1 << shift))) { DRM_DEBUG("No such drawable %d\n", draw.handle); - spin_unlock_irqrestore(&dev->drw_lock, irqflags); return 0; } - dev->drw_bitfield[idx] &= ~(1 << mod); + spin_lock_irqsave(&dev->drw_lock, irqflags); + + bitfield[idx] &= ~(1 << shift); + + spin_unlock_irqrestore(&dev->drw_lock, irqflags); - if (idx == (dev->drw_bitfield_length - 1)) { - while (idx >= 0 && !dev->drw_bitfield[idx]) + /* Can we shrink the arrays? */ + if (idx == bitfield_length - 1) { + while (idx >= 0 && !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); + bitfield_length = idx + 1; - if (new_bitfield || idx == -1) { - dev->drw_bitfield = new_bitfield; - dev->drw_bitfield_length = idx + 1; - } + if (idx != draw.handle / (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 (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; + 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_unlock_irqrestore(&dev->drw_lock, irqflags); + 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; @@ -173,24 +211,22 @@ int drm_rmdraw(DRM_IOCTL_ARGS) int drm_update_drawable_info(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_update_draw_t update; - unsigned int id, idx, mod; - unsigned int irqflags; + unsigned int id, idx, shift; + u32 *bitfield = dev->drw_bitfield; + unsigned int irqflags, bitfield_length = dev->drw_bitfield_length; drm_drawable_info_t *info; - void *new_data; + drm_clip_rect_t *rects; + int err; DRM_COPY_FROM_USER_IOCTL(update, (drm_update_draw_t __user *) data, sizeof(update)); id = update.handle; - idx = id / 32; - mod = id % 32; + idx = id / (8 * sizeof(*bitfield)); + shift = id % (8 * sizeof(*bitfield)); - spin_lock_irqsave(&dev->drw_lock, irqflags); - - if (idx >= dev->drw_bitfield_length || - !(dev->drw_bitfield[idx] & (1 << mod))) { + if (idx >= bitfield_length || !(bitfield[idx] & (1 << shift))) { DRM_ERROR("No such drawable %d\n", update.handle); - spin_unlock_irqrestore(&dev->drw_lock, irqflags); return DRM_ERR(EINVAL); } @@ -201,66 +237,77 @@ int drm_update_drawable_info(DRM_IOCTL_ARGS) { 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; + 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 (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 && 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; } - if (update.num != info->num_rects) { + 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->num_rects = update.num; } + 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); - spin_unlock_irqrestore(&dev->drw_lock, irqflags); return DRM_ERR(EINVAL); } - spin_unlock_irqrestore(&dev->drw_lock, irqflags); - 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) { - unsigned int idx = id / 32, mod = id % 32; + u32 *bitfield = dev->drw_bitfield; + unsigned int idx = id / (8 * sizeof(*bitfield)); + unsigned int shift = id % (8 * sizeof(*bitfield)); if (idx >= dev->drw_bitfield_length || - !(dev->drw_bitfield[idx] & (1 << mod))) { + !(bitfield[idx] & (1 << shift))) { DRM_DEBUG("No such drawable %d\n", id); return NULL; } -- cgit v1.2.3 From d04751facea36cb888c7510b126658fdbc4277d5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Mon, 28 Aug 2006 18:19:58 +0200 Subject: Add copyright notice. --- shared-core/drm_drawable.c | 1 + 1 file changed, 1 insertion(+) (limited to 'shared-core/drm_drawable.c') diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c index 81eb9f08..bbfaf139 100644 --- a/shared-core/drm_drawable.c +++ b/shared-core/drm_drawable.c @@ -12,6 +12,7 @@ * * 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 -- cgit v1.2.3 From df7551ef7334d728ec0371423661bb403d3e270a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Wed, 30 Aug 2006 19:24:04 +0200 Subject: Change first valid DRM drawable ID to be 1 instead of 0. This makes it easier for userspace to know when it needs to allocate an ID. Also free drawable information memory when it's no longer needed. --- shared-core/drm_drawable.c | 35 +++++++++++++++++++++++------------ 1 file changed, 23 insertions(+), 12 deletions(-) (limited to 'shared-core/drm_drawable.c') diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c index bbfaf139..5e2fc86c 100644 --- a/shared-core/drm_drawable.c +++ b/shared-core/drm_drawable.c @@ -92,13 +92,13 @@ done: bitfield[i] = 0; } - draw.handle = i * 8 * sizeof(*bitfield) + j; + 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] = NULL; + info[draw.handle - 1] = NULL; if (bitfield != dev->drw_bitfield) { memcpy(bitfield, dev->drw_bitfield, dev->drw_bitfield_length * @@ -132,7 +132,7 @@ int drm_rmdraw(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_draw_t draw; - unsigned int idx, shift; + unsigned int id, idx, shift; unsigned int irqflags; u32 *bitfield = dev->drw_bitfield; unsigned int bitfield_length = dev->drw_bitfield_length; @@ -142,10 +142,11 @@ int drm_rmdraw(DRM_IOCTL_ARGS) DRM_COPY_FROM_USER_IOCTL(draw, (drm_draw_t __user *) data, sizeof(draw)); - idx = draw.handle / (8 * sizeof(*bitfield)); - shift = draw.handle % (8 * sizeof(*bitfield)); + id = draw.handle - 1; + idx = id / (8 * sizeof(*bitfield)); + shift = id % (8 * sizeof(*bitfield)); - if (idx >= bitfield_length || + if (idx < 0 || idx >= bitfield_length || !(bitfield[idx] & (1 << shift))) { DRM_DEBUG("No such drawable %d\n", draw.handle); return 0; @@ -157,6 +158,12 @@ int drm_rmdraw(DRM_IOCTL_ARGS) 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]) @@ -164,7 +171,7 @@ int drm_rmdraw(DRM_IOCTL_ARGS) bitfield_length = idx + 1; - if (idx != draw.handle / (8 * sizeof(*bitfield))) + if (idx != id / (8 * sizeof(*bitfield))) bitfield = drm_alloc(bitfield_length * sizeof(*bitfield), DRM_MEM_BUFS); @@ -222,11 +229,12 @@ int drm_update_drawable_info(DRM_IOCTL_ARGS) { DRM_COPY_FROM_USER_IOCTL(update, (drm_update_draw_t __user *) data, sizeof(update)); - id = update.handle; + id = update.handle - 1; idx = id / (8 * sizeof(*bitfield)); shift = id % (8 * sizeof(*bitfield)); - if (idx >= bitfield_length || !(bitfield[idx] & (1 << shift))) { + if (idx < 0 || idx >= bitfield_length || + !(bitfield[idx] & (1 << shift))) { DRM_ERROR("No such drawable %d\n", update.handle); return DRM_ERR(EINVAL); } @@ -304,10 +312,13 @@ error: */ drm_drawable_info_t *drm_get_drawable_info(drm_device_t *dev, drm_drawable_t id) { u32 *bitfield = dev->drw_bitfield; - unsigned int idx = id / (8 * sizeof(*bitfield)); - unsigned int shift = id % (8 * sizeof(*bitfield)); + unsigned int idx, shift; + + id--; + idx = id / (8 * sizeof(*bitfield)); + shift = id % (8 * sizeof(*bitfield)); - if (idx >= dev->drw_bitfield_length || + if (idx < 0 || idx >= dev->drw_bitfield_length || !(bitfield[idx] & (1 << shift))) { DRM_DEBUG("No such drawable %d\n", id); return NULL; -- cgit v1.2.3 From d58389968124191a546a14b42ef84edc224be23d Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Felix=20K=C3=BChling?= Date: Mon, 2 Oct 2006 10:50:40 +0200 Subject: drm_rmdraw: Declare id and idx as signed so testing for < 0 works as intended. --- shared-core/drm_drawable.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'shared-core/drm_drawable.c') diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c index 5e2fc86c..d203b244 100644 --- a/shared-core/drm_drawable.c +++ b/shared-core/drm_drawable.c @@ -132,7 +132,8 @@ int drm_rmdraw(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_draw_t draw; - unsigned int id, idx, shift; + int id, idx; + unsigned int shift; unsigned int irqflags; u32 *bitfield = dev->drw_bitfield; unsigned int bitfield_length = dev->drw_bitfield_length; -- cgit v1.2.3 From f6238cf6244b32bd84e3d2819963d7f5473867c8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Michel=20D=C3=A4nzer?= Date: Mon, 2 Oct 2006 15:33:19 +0200 Subject: Fix type of second argument to spin_lock_irqsave(). --- shared-core/drm_drawable.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'shared-core/drm_drawable.c') diff --git a/shared-core/drm_drawable.c b/shared-core/drm_drawable.c index d203b244..0817e321 100644 --- a/shared-core/drm_drawable.c +++ b/shared-core/drm_drawable.c @@ -43,7 +43,7 @@ int drm_adddraw(DRM_IOCTL_ARGS) { DRM_DEVICE; - unsigned int irqflags; + unsigned long irqflags; int i, j; u32 *bitfield = dev->drw_bitfield; unsigned int bitfield_length = dev->drw_bitfield_length; @@ -134,7 +134,7 @@ int drm_rmdraw(DRM_IOCTL_ARGS) drm_draw_t draw; int id, idx; unsigned int shift; - unsigned int irqflags; + unsigned long irqflags; u32 *bitfield = dev->drw_bitfield; unsigned int bitfield_length = dev->drw_bitfield_length; drm_drawable_info_t **info = dev->drw_info; @@ -220,9 +220,9 @@ int drm_rmdraw(DRM_IOCTL_ARGS) int drm_update_drawable_info(DRM_IOCTL_ARGS) { DRM_DEVICE; drm_update_draw_t update; - unsigned int id, idx, shift; + unsigned int id, idx, shift, bitfield_length = dev->drw_bitfield_length; u32 *bitfield = dev->drw_bitfield; - unsigned int irqflags, bitfield_length = dev->drw_bitfield_length; + unsigned long irqflags; drm_drawable_info_t *info; drm_clip_rect_t *rects; int err; -- cgit v1.2.3