457 lines
12 KiB
C
457 lines
12 KiB
C
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/*
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* Copyright 2013 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Dave Airlie
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* Alon Levy
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*/
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#include "qxl_drv.h"
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#include "qxl_object.h"
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/*
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* TODO: allocating a new gem(in qxl_bo) for each request.
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* This is wasteful since bo's are page aligned.
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*/
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static int qxl_alloc_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct qxl_device *qdev = dev->dev_private;
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struct drm_qxl_alloc *qxl_alloc = data;
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int ret;
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struct qxl_bo *qobj;
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uint32_t handle;
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u32 domain = QXL_GEM_DOMAIN_VRAM;
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if (qxl_alloc->size == 0) {
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DRM_ERROR("invalid size %d\n", qxl_alloc->size);
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return -EINVAL;
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}
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ret = qxl_gem_object_create_with_handle(qdev, file_priv,
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domain,
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qxl_alloc->size,
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NULL,
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&qobj, &handle);
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if (ret) {
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DRM_ERROR("%s: failed to create gem ret=%d\n",
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__func__, ret);
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return -ENOMEM;
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}
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qxl_alloc->handle = handle;
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return 0;
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}
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static int qxl_map_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct qxl_device *qdev = dev->dev_private;
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struct drm_qxl_map *qxl_map = data;
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return qxl_mode_dumb_mmap(file_priv, qdev->ddev, qxl_map->handle,
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&qxl_map->offset);
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}
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struct qxl_reloc_info {
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int type;
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struct qxl_bo *dst_bo;
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uint32_t dst_offset;
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struct qxl_bo *src_bo;
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int src_offset;
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};
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/*
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* dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's
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* are on vram).
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* *(dst + dst_off) = qxl_bo_physical_address(src, src_off)
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*/
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static void
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apply_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
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{
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void *reloc_page;
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reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
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*(uint64_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = qxl_bo_physical_address(qdev,
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info->src_bo,
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info->src_offset);
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qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
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}
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static void
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apply_surf_reloc(struct qxl_device *qdev, struct qxl_reloc_info *info)
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{
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uint32_t id = 0;
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void *reloc_page;
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if (info->src_bo && !info->src_bo->is_primary)
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id = info->src_bo->surface_id;
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reloc_page = qxl_bo_kmap_atomic_page(qdev, info->dst_bo, info->dst_offset & PAGE_MASK);
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*(uint32_t *)(reloc_page + (info->dst_offset & ~PAGE_MASK)) = id;
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qxl_bo_kunmap_atomic_page(qdev, info->dst_bo, reloc_page);
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}
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/* return holding the reference to this object */
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static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev,
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struct drm_file *file_priv, uint64_t handle,
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struct qxl_release *release)
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{
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struct drm_gem_object *gobj;
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struct qxl_bo *qobj;
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int ret;
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gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle);
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if (!gobj)
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return NULL;
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qobj = gem_to_qxl_bo(gobj);
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ret = qxl_release_list_add(release, qobj);
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if (ret) {
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drm_gem_object_unreference_unlocked(gobj);
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return NULL;
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}
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return qobj;
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}
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/*
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* Usage of execbuffer:
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* Relocations need to take into account the full QXLDrawable size.
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* However, the command as passed from user space must *not* contain the initial
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* QXLReleaseInfo struct (first XXX bytes)
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*/
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static int qxl_process_single_command(struct qxl_device *qdev,
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struct drm_qxl_command *cmd,
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struct drm_file *file_priv)
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{
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struct qxl_reloc_info *reloc_info;
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int release_type;
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struct qxl_release *release;
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struct qxl_bo *cmd_bo;
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void *fb_cmd;
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int i, j, ret, num_relocs;
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int unwritten;
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switch (cmd->type) {
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case QXL_CMD_DRAW:
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release_type = QXL_RELEASE_DRAWABLE;
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break;
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case QXL_CMD_SURFACE:
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case QXL_CMD_CURSOR:
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default:
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DRM_DEBUG("Only draw commands in execbuffers\n");
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return -EINVAL;
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break;
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}
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if (cmd->command_size > PAGE_SIZE - sizeof(union qxl_release_info))
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return -EINVAL;
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if (!access_ok(VERIFY_READ,
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(void *)(unsigned long)cmd->command,
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cmd->command_size))
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return -EFAULT;
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reloc_info = kmalloc(sizeof(struct qxl_reloc_info) * cmd->relocs_num, GFP_KERNEL);
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if (!reloc_info)
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return -ENOMEM;
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ret = qxl_alloc_release_reserved(qdev,
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sizeof(union qxl_release_info) +
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cmd->command_size,
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release_type,
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&release,
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&cmd_bo);
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if (ret)
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goto out_free_reloc;
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/* TODO copy slow path code from i915 */
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fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE));
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unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)cmd->command, cmd->command_size);
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{
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struct qxl_drawable *draw = fb_cmd;
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draw->mm_time = qdev->rom->mm_clock;
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}
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qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd);
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if (unwritten) {
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DRM_ERROR("got unwritten %d\n", unwritten);
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ret = -EFAULT;
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goto out_free_release;
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}
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/* fill out reloc info structs */
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num_relocs = 0;
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for (i = 0; i < cmd->relocs_num; ++i) {
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struct drm_qxl_reloc reloc;
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if (copy_from_user(&reloc,
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&((struct drm_qxl_reloc *)(uintptr_t)cmd->relocs)[i],
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sizeof(reloc))) {
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ret = -EFAULT;
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goto out_free_bos;
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}
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/* add the bos to the list of bos to validate -
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need to validate first then process relocs? */
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if (reloc.reloc_type != QXL_RELOC_TYPE_BO && reloc.reloc_type != QXL_RELOC_TYPE_SURF) {
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DRM_DEBUG("unknown reloc type %d\n", reloc_info[i].type);
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ret = -EINVAL;
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goto out_free_bos;
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}
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reloc_info[i].type = reloc.reloc_type;
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if (reloc.dst_handle) {
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reloc_info[i].dst_bo = qxlhw_handle_to_bo(qdev, file_priv,
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reloc.dst_handle, release);
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if (!reloc_info[i].dst_bo) {
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ret = -EINVAL;
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reloc_info[i].src_bo = NULL;
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goto out_free_bos;
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}
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reloc_info[i].dst_offset = reloc.dst_offset;
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} else {
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reloc_info[i].dst_bo = cmd_bo;
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reloc_info[i].dst_offset = reloc.dst_offset + release->release_offset;
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}
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num_relocs++;
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/* reserve and validate the reloc dst bo */
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if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle > 0) {
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reloc_info[i].src_bo =
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qxlhw_handle_to_bo(qdev, file_priv,
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reloc.src_handle, release);
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if (!reloc_info[i].src_bo) {
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if (reloc_info[i].dst_bo != cmd_bo)
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drm_gem_object_unreference_unlocked(&reloc_info[i].dst_bo->gem_base);
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ret = -EINVAL;
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goto out_free_bos;
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}
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reloc_info[i].src_offset = reloc.src_offset;
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} else {
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reloc_info[i].src_bo = NULL;
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reloc_info[i].src_offset = 0;
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}
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}
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/* validate all buffers */
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ret = qxl_release_reserve_list(release, false);
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if (ret)
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goto out_free_bos;
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for (i = 0; i < cmd->relocs_num; ++i) {
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if (reloc_info[i].type == QXL_RELOC_TYPE_BO)
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apply_reloc(qdev, &reloc_info[i]);
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else if (reloc_info[i].type == QXL_RELOC_TYPE_SURF)
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apply_surf_reloc(qdev, &reloc_info[i]);
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}
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ret = qxl_push_command_ring_release(qdev, release, cmd->type, true);
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if (ret)
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qxl_release_backoff_reserve_list(release);
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else
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qxl_release_fence_buffer_objects(release);
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out_free_bos:
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for (j = 0; j < num_relocs; j++) {
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if (reloc_info[j].dst_bo != cmd_bo)
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drm_gem_object_unreference_unlocked(&reloc_info[j].dst_bo->gem_base);
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if (reloc_info[j].src_bo && reloc_info[j].src_bo != cmd_bo)
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drm_gem_object_unreference_unlocked(&reloc_info[j].src_bo->gem_base);
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}
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out_free_release:
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if (ret)
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qxl_release_free(qdev, release);
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out_free_reloc:
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kfree(reloc_info);
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return ret;
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}
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static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct qxl_device *qdev = dev->dev_private;
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struct drm_qxl_execbuffer *execbuffer = data;
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struct drm_qxl_command user_cmd;
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int cmd_num;
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int ret;
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for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) {
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struct drm_qxl_command *commands =
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(struct drm_qxl_command *)(uintptr_t)execbuffer->commands;
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if (copy_from_user(&user_cmd, &commands[cmd_num],
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sizeof(user_cmd)))
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return -EFAULT;
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ret = qxl_process_single_command(qdev, &user_cmd, file_priv);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int qxl_update_area_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file)
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{
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struct qxl_device *qdev = dev->dev_private;
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struct drm_qxl_update_area *update_area = data;
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struct qxl_rect area = {.left = update_area->left,
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.top = update_area->top,
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.right = update_area->right,
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.bottom = update_area->bottom};
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int ret;
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struct drm_gem_object *gobj = NULL;
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struct qxl_bo *qobj = NULL;
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if (update_area->left >= update_area->right ||
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update_area->top >= update_area->bottom)
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return -EINVAL;
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gobj = drm_gem_object_lookup(dev, file, update_area->handle);
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if (gobj == NULL)
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return -ENOENT;
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qobj = gem_to_qxl_bo(gobj);
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ret = qxl_bo_reserve(qobj, false);
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if (ret)
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goto out;
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if (!qobj->pin_count) {
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qxl_ttm_placement_from_domain(qobj, qobj->type, false);
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ret = ttm_bo_validate(&qobj->tbo, &qobj->placement,
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true, false);
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if (unlikely(ret))
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goto out;
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}
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ret = qxl_bo_check_id(qdev, qobj);
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if (ret)
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goto out2;
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if (!qobj->surface_id)
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DRM_ERROR("got update area for surface with no id %d\n", update_area->handle);
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ret = qxl_io_update_area(qdev, qobj, &area);
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out2:
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|
|
qxl_bo_unreserve(qobj);
|
||
|
|
|
||
|
|
out:
|
||
|
|
drm_gem_object_unreference_unlocked(gobj);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int qxl_getparam_ioctl(struct drm_device *dev, void *data,
|
||
|
|
struct drm_file *file_priv)
|
||
|
|
{
|
||
|
|
struct qxl_device *qdev = dev->dev_private;
|
||
|
|
struct drm_qxl_getparam *param = data;
|
||
|
|
|
||
|
|
switch (param->param) {
|
||
|
|
case QXL_PARAM_NUM_SURFACES:
|
||
|
|
param->value = qdev->rom->n_surfaces;
|
||
|
|
break;
|
||
|
|
case QXL_PARAM_MAX_RELOCS:
|
||
|
|
param->value = QXL_MAX_RES;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int qxl_clientcap_ioctl(struct drm_device *dev, void *data,
|
||
|
|
struct drm_file *file_priv)
|
||
|
|
{
|
||
|
|
struct qxl_device *qdev = dev->dev_private;
|
||
|
|
struct drm_qxl_clientcap *param = data;
|
||
|
|
int byte, idx;
|
||
|
|
|
||
|
|
byte = param->index / 8;
|
||
|
|
idx = param->index % 8;
|
||
|
|
|
||
|
|
if (qdev->pdev->revision < 4)
|
||
|
|
return -ENOSYS;
|
||
|
|
|
||
|
|
if (byte >= 58)
|
||
|
|
return -ENOSYS;
|
||
|
|
|
||
|
|
if (qdev->rom->client_capabilities[byte] & (1 << idx))
|
||
|
|
return 0;
|
||
|
|
return -ENOSYS;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int qxl_alloc_surf_ioctl(struct drm_device *dev, void *data,
|
||
|
|
struct drm_file *file)
|
||
|
|
{
|
||
|
|
struct qxl_device *qdev = dev->dev_private;
|
||
|
|
struct drm_qxl_alloc_surf *param = data;
|
||
|
|
struct qxl_bo *qobj;
|
||
|
|
int handle;
|
||
|
|
int ret;
|
||
|
|
int size, actual_stride;
|
||
|
|
struct qxl_surface surf;
|
||
|
|
|
||
|
|
/* work out size allocate bo with handle */
|
||
|
|
actual_stride = param->stride < 0 ? -param->stride : param->stride;
|
||
|
|
size = actual_stride * param->height + actual_stride;
|
||
|
|
|
||
|
|
surf.format = param->format;
|
||
|
|
surf.width = param->width;
|
||
|
|
surf.height = param->height;
|
||
|
|
surf.stride = param->stride;
|
||
|
|
surf.data = 0;
|
||
|
|
|
||
|
|
ret = qxl_gem_object_create_with_handle(qdev, file,
|
||
|
|
QXL_GEM_DOMAIN_SURFACE,
|
||
|
|
size,
|
||
|
|
&surf,
|
||
|
|
&qobj, &handle);
|
||
|
|
if (ret) {
|
||
|
|
DRM_ERROR("%s: failed to create gem ret=%d\n",
|
||
|
|
__func__, ret);
|
||
|
|
return -ENOMEM;
|
||
|
|
} else
|
||
|
|
param->handle = handle;
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
const struct drm_ioctl_desc qxl_ioctls[] = {
|
||
|
|
DRM_IOCTL_DEF_DRV(QXL_ALLOC, qxl_alloc_ioctl, DRM_AUTH|DRM_UNLOCKED),
|
||
|
|
|
||
|
|
DRM_IOCTL_DEF_DRV(QXL_MAP, qxl_map_ioctl, DRM_AUTH|DRM_UNLOCKED),
|
||
|
|
|
||
|
|
DRM_IOCTL_DEF_DRV(QXL_EXECBUFFER, qxl_execbuffer_ioctl,
|
||
|
|
DRM_AUTH|DRM_UNLOCKED),
|
||
|
|
DRM_IOCTL_DEF_DRV(QXL_UPDATE_AREA, qxl_update_area_ioctl,
|
||
|
|
DRM_AUTH|DRM_UNLOCKED),
|
||
|
|
DRM_IOCTL_DEF_DRV(QXL_GETPARAM, qxl_getparam_ioctl,
|
||
|
|
DRM_AUTH|DRM_UNLOCKED),
|
||
|
|
DRM_IOCTL_DEF_DRV(QXL_CLIENTCAP, qxl_clientcap_ioctl,
|
||
|
|
DRM_AUTH|DRM_UNLOCKED),
|
||
|
|
|
||
|
|
DRM_IOCTL_DEF_DRV(QXL_ALLOC_SURF, qxl_alloc_surf_ioctl,
|
||
|
|
DRM_AUTH|DRM_UNLOCKED),
|
||
|
|
};
|
||
|
|
|
||
|
|
int qxl_max_ioctls = ARRAY_SIZE(qxl_ioctls);
|