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.h | 24 +++++ shared-core/drm_drawable.c | 256 +++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 280 insertions(+) create mode 100644 shared-core/drm_drawable.c (limited to 'shared-core') diff --git a/shared-core/drm.h b/shared-core/drm.h index eaeb21e4..614422bd 100644 --- a/shared-core/drm.h +++ b/shared-core/drm.h @@ -158,6 +158,14 @@ typedef struct drm_clip_rect { unsigned short y2; } drm_clip_rect_t; +/** + * Drawable information. + */ +typedef struct drm_drawable_info { + unsigned int num_rects; + drm_clip_rect_t *rects; +} drm_drawable_info_t; + /** * Texture region, */ @@ -507,6 +515,20 @@ typedef struct drm_draw { drm_drawable_t handle; } drm_draw_t; +/** + * DRM_IOCTL_UPDATE_DRAW ioctl argument type. + */ +typedef enum { + DRM_DRAWABLE_CLIPRECTS, +} drm_drawable_info_type_t; + +typedef struct drm_update_draw { + drm_drawable_t handle; + unsigned int type; + unsigned int num; + unsigned long long data; +} drm_update_draw_t; + /** * DRM_IOCTL_GET_MAGIC and DRM_IOCTL_AUTH_MAGIC ioctl argument type. */ @@ -696,6 +718,8 @@ typedef struct drm_set_version { #define DRM_IOCTL_WAIT_VBLANK DRM_IOWR(0x3a, drm_wait_vblank_t) +#define DRM_IOCTL_UPDATE_DRAW DRM_IOW(0x3f, drm_update_draw_t) + /*@}*/ /** 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