diff options
Diffstat (limited to 'drivers/gpu/drm/qxl/qxl_ioctl.c')
| -rw-r--r-- | drivers/gpu/drm/qxl/qxl_ioctl.c | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c new file mode 100644 index 000000000000..a4b71b25fa53 --- /dev/null +++ b/drivers/gpu/drm/qxl/qxl_ioctl.c @@ -0,0 +1,412 @@ +/* + * Copyright 2013 Red Hat Inc. + * + * 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 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 + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Dave Airlie + * Alon Levy + */ + +#include "qxl_drv.h" +#include "qxl_object.h" + +/* + * TODO: allocating a new gem(in qxl_bo) for each request. + * This is wasteful since bo's are page aligned. + */ +static int qxl_alloc_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct qxl_device *qdev = dev->dev_private; + struct drm_qxl_alloc *qxl_alloc = data; + int ret; + struct qxl_bo *qobj; + uint32_t handle; + u32 domain = QXL_GEM_DOMAIN_VRAM; + + if (qxl_alloc->size == 0) { + DRM_ERROR("invalid size %d\n", qxl_alloc->size); + return -EINVAL; + } + ret = qxl_gem_object_create_with_handle(qdev, file_priv, + domain, + qxl_alloc->size, + NULL, + &qobj, &handle); + if (ret) { + DRM_ERROR("%s: failed to create gem ret=%d\n", + __func__, ret); + return -ENOMEM; + } + qxl_alloc->handle = handle; + return 0; +} + +static int qxl_map_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct qxl_device *qdev = dev->dev_private; + struct drm_qxl_map *qxl_map = data; + + return qxl_mode_dumb_mmap(file_priv, qdev->ddev, qxl_map->handle, + &qxl_map->offset); +} + +/* + * dst must be validated, i.e. whole bo on vram/surfacesram (right now all bo's + * are on vram). + * *(dst + dst_off) = qxl_bo_physical_address(src, src_off) + */ +static void +apply_reloc(struct qxl_device *qdev, struct qxl_bo *dst, uint64_t dst_off, + struct qxl_bo *src, uint64_t src_off) +{ + void *reloc_page; + + reloc_page = qxl_bo_kmap_atomic_page(qdev, dst, dst_off & PAGE_MASK); + *(uint64_t *)(reloc_page + (dst_off & ~PAGE_MASK)) = qxl_bo_physical_address(qdev, + src, src_off); + qxl_bo_kunmap_atomic_page(qdev, dst, reloc_page); +} + +static void +apply_surf_reloc(struct qxl_device *qdev, struct qxl_bo *dst, uint64_t dst_off, + struct qxl_bo *src) +{ + uint32_t id = 0; + void *reloc_page; + + if (src && !src->is_primary) + id = src->surface_id; + + reloc_page = qxl_bo_kmap_atomic_page(qdev, dst, dst_off & PAGE_MASK); + *(uint32_t *)(reloc_page + (dst_off & ~PAGE_MASK)) = id; + qxl_bo_kunmap_atomic_page(qdev, dst, reloc_page); +} + +/* return holding the reference to this object */ +static struct qxl_bo *qxlhw_handle_to_bo(struct qxl_device *qdev, + struct drm_file *file_priv, uint64_t handle, + struct qxl_reloc_list *reloc_list) +{ + struct drm_gem_object *gobj; + struct qxl_bo *qobj; + int ret; + + gobj = drm_gem_object_lookup(qdev->ddev, file_priv, handle); + if (!gobj) { + DRM_ERROR("bad bo handle %lld\n", handle); + return NULL; + } + qobj = gem_to_qxl_bo(gobj); + + ret = qxl_bo_list_add(reloc_list, qobj); + if (ret) + return NULL; + + return qobj; +} + +/* + * Usage of execbuffer: + * Relocations need to take into account the full QXLDrawable size. + * However, the command as passed from user space must *not* contain the initial + * QXLReleaseInfo struct (first XXX bytes) + */ +static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct qxl_device *qdev = dev->dev_private; + struct drm_qxl_execbuffer *execbuffer = data; + struct drm_qxl_command user_cmd; + int cmd_num; + struct qxl_bo *reloc_src_bo; + struct qxl_bo *reloc_dst_bo; + struct drm_qxl_reloc reloc; + void *fb_cmd; + int i, ret; + struct qxl_reloc_list reloc_list; + int unwritten; + uint32_t reloc_dst_offset; + INIT_LIST_HEAD(&reloc_list.bos); + + for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) { + struct qxl_release *release; + struct qxl_bo *cmd_bo; + int release_type; + struct drm_qxl_command *commands = + (struct drm_qxl_command *)(uintptr_t)execbuffer->commands; + + if (DRM_COPY_FROM_USER(&user_cmd, &commands[cmd_num], + sizeof(user_cmd))) + return -EFAULT; + switch (user_cmd.type) { + case QXL_CMD_DRAW: + release_type = QXL_RELEASE_DRAWABLE; + break; + case QXL_CMD_SURFACE: + case QXL_CMD_CURSOR: + default: + DRM_DEBUG("Only draw commands in execbuffers\n"); + return -EINVAL; + break; + } + + if (user_cmd.command_size > PAGE_SIZE - sizeof(union qxl_release_info)) + return -EINVAL; + + ret = qxl_alloc_release_reserved(qdev, + sizeof(union qxl_release_info) + + user_cmd.command_size, + release_type, + &release, + &cmd_bo); + if (ret) + return ret; + + /* TODO copy slow path code from i915 */ + fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE)); + unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)user_cmd.command, user_cmd.command_size); + qxl_bo_kunmap_atomic_page(qdev, cmd_bo, fb_cmd); + if (unwritten) { + DRM_ERROR("got unwritten %d\n", unwritten); + qxl_release_unreserve(qdev, release); + qxl_release_free(qdev, release); + return -EFAULT; + } + + for (i = 0 ; i < user_cmd.relocs_num; ++i) { + if (DRM_COPY_FROM_USER(&reloc, + &((struct drm_qxl_reloc *)(uintptr_t)user_cmd.relocs)[i], + sizeof(reloc))) { + qxl_bo_list_unreserve(&reloc_list, true); + qxl_release_unreserve(qdev, release); + qxl_release_free(qdev, release); + return -EFAULT; + } + + /* add the bos to the list of bos to validate - + need to validate first then process relocs? */ + if (reloc.dst_handle) { + reloc_dst_bo = qxlhw_handle_to_bo(qdev, file_priv, + reloc.dst_handle, &reloc_list); + if (!reloc_dst_bo) { + qxl_bo_list_unreserve(&reloc_list, true); + qxl_release_unreserve(qdev, release); + qxl_release_free(qdev, release); + return -EINVAL; + } + reloc_dst_offset = 0; + } else { + reloc_dst_bo = cmd_bo; + reloc_dst_offset = release->release_offset; + } + + /* reserve and validate the reloc dst bo */ + if (reloc.reloc_type == QXL_RELOC_TYPE_BO || reloc.src_handle > 0) { + reloc_src_bo = + qxlhw_handle_to_bo(qdev, file_priv, + reloc.src_handle, &reloc_list); + if (!reloc_src_bo) { + if (reloc_dst_bo != cmd_bo) + drm_gem_object_unreference_unlocked(&reloc_dst_bo->gem_base); + qxl_bo_list_unreserve(&reloc_list, true); + qxl_release_unreserve(qdev, release); + qxl_release_free(qdev, release); + return -EINVAL; + } + } else + reloc_src_bo = NULL; + if (reloc.reloc_type == QXL_RELOC_TYPE_BO) { + apply_reloc(qdev, reloc_dst_bo, reloc_dst_offset + reloc.dst_offset, + reloc_src_bo, reloc.src_offset); + } else if (reloc.reloc_type == QXL_RELOC_TYPE_SURF) { + apply_surf_reloc(qdev, reloc_dst_bo, reloc_dst_offset + reloc.dst_offset, reloc_src_bo); + } else { + DRM_ERROR("unknown reloc type %d\n", reloc.reloc_type); + return -EINVAL; + } + + if (reloc_src_bo && reloc_src_bo != cmd_bo) { + qxl_release_add_res(qdev, release, reloc_src_bo); + drm_gem_object_unreference_unlocked(&reloc_src_bo->gem_base); + } + + if (reloc_dst_bo != cmd_bo) + drm_gem_object_unreference_unlocked(&reloc_dst_bo->gem_base); + } + qxl_fence_releaseable(qdev, release); + + ret = qxl_push_command_ring_release(qdev, release, user_cmd.type, true); + if (ret == -ERESTARTSYS) { + qxl_release_unreserve(qdev, release); + qxl_release_free(qdev, release); + qxl_bo_list_unreserve(&reloc_list, true); + return ret; + } + qxl_release_unreserve(qdev, release); + } + qxl_bo_list_unreserve(&reloc_list, 0); + return 0; +} + +static int qxl_update_area_ioctl(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct qxl_device *qdev = dev->dev_private; + struct drm_qxl_update_area *update_area = data; + struct qxl_rect area = {.left = update_area->left, + .top = update_area->top, + .right = update_area->right, + .bottom = update_area->bottom}; + int ret; + struct drm_gem_object *gobj = NULL; + struct qxl_bo *qobj = NULL; + + if (update_area->left >= update_area->right || + update_area->top >= update_area->bottom) + return -EINVAL; + + gobj = drm_gem_object_lookup(dev, file, update_area->handle); + if (gobj == NULL) + return -ENOENT; + + qobj = gem_to_qxl_bo(gobj); + + ret = qxl_bo_reserve(qobj, false); + if (ret) + goto out; + + if (!qobj->pin_count) { + qxl_ttm_placement_from_domain(qobj, qobj->type); + ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, + true, false); + if (unlikely(ret)) + goto out; + } + + ret = qxl_bo_check_id(qdev, qobj); + if (ret) + goto out2; + if (!qobj->surface_id) + DRM_ERROR("got update area for surface with no id %d\n", update_area->handle); + ret = qxl_io_update_area(qdev, qobj, &area); + +out2: + 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; +} + +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 = DRM_ARRAY_SIZE(qxl_ioctls); |