diff options
Diffstat (limited to 'drivers/staging/cdv/imgv/psb_ttm_glue.c')
| -rw-r--r-- | drivers/staging/cdv/imgv/psb_ttm_glue.c | 376 |
1 files changed, 376 insertions, 0 deletions
diff --git a/drivers/staging/cdv/imgv/psb_ttm_glue.c b/drivers/staging/cdv/imgv/psb_ttm_glue.c new file mode 100644 index 000000000000..57cb6ecd7ce3 --- /dev/null +++ b/drivers/staging/cdv/imgv/psb_ttm_glue.c @@ -0,0 +1,376 @@ +/************************************************************************** + * Copyright (c) 2011, Intel Corporation. + * All Rights Reserved. + * Copyright (c) 2008, Tungsten Graphics Inc. Cedar Park, TX., USA. + * All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + **************************************************************************/ + + +#include <drm/drmP.h> +#include "psb_drv.h" +#include "psb_ttm_userobj_api.h" +#include <linux/io.h> +#include "psb_msvdx.h" +#include "bufferclass_video.h" + +/*IMG Headers*/ +#include "private_data.h" + +extern int PVRMMap(struct file *pFile, struct vm_area_struct *ps_vma); +extern unsigned int bc_video_id_usage[BC_VIDEO_DEVICE_MAX_ID]; +int BC_DestroyBuffers (int id); + +static struct vm_operations_struct psb_ttm_vm_ops; + +/** + * NOTE: driver_private of drm_file is now a PVRSRV_FILE_PRIVATE_DATA struct + * pPriv in PVRSRV_FILE_PRIVATE_DATA contains the original psb_fpriv; + */ +int psb_open(struct inode *inode, struct file *filp) +{ + struct drm_file *file_priv; + struct drm_psb_private *dev_priv; + struct psb_fpriv *psb_fp; + PVRSRV_FILE_PRIVATE_DATA *pvr_file_priv; + int ret; + + DRM_DEBUG("\n"); + + ret = drm_open(inode, filp); + if (unlikely(ret)) + return ret; + + psb_fp = kzalloc(sizeof(*psb_fp), GFP_KERNEL); + + if (unlikely(psb_fp == NULL)) + goto out_err0; + + file_priv = (struct drm_file *) filp->private_data; + dev_priv = psb_priv(file_priv->minor->dev); + + DRM_DEBUG("is_master %d\n", file_priv->is_master ? 1 : 0); + + psb_fp->tfile = ttm_object_file_init(dev_priv->tdev, + PSB_FILE_OBJECT_HASH_ORDER); + if (unlikely(psb_fp->tfile == NULL)) + goto out_err1; + + pvr_file_priv = (PVRSRV_FILE_PRIVATE_DATA *)file_priv->driver_priv; + if (!pvr_file_priv) { + DRM_ERROR("drm file private is NULL\n"); + goto out_err1; + } + + pvr_file_priv->pPriv = psb_fp; + if (unlikely(dev_priv->bdev.dev_mapping == NULL)) + dev_priv->bdev.dev_mapping = dev_priv->dev->dev_mapping; + + return 0; + +out_err1: + kfree(psb_fp); +out_err0: + (void) drm_release(inode, filp); + return ret; +} + +int psb_release(struct inode *inode, struct file *filp) +{ + struct drm_file *file_priv; + struct psb_fpriv *psb_fp; + struct drm_psb_private *dev_priv; + struct msvdx_private *msvdx_priv; + int ret; + file_priv = (struct drm_file *) filp->private_data; + psb_fp = psb_fpriv(file_priv); + dev_priv = psb_priv(file_priv->minor->dev); + msvdx_priv = (struct msvdx_private *)dev_priv->msvdx_private; + + /*cleanup for msvdx*/ + if (msvdx_priv->tfile == psb_fpriv(file_priv)->tfile) { + msvdx_priv->fw_status = 0; + msvdx_priv->host_be_opp_enabled = 0; + msvdx_priv->deblock_enabled = 0; + memset(&msvdx_priv->frame_info, 0, sizeof(struct drm_psb_msvdx_frame_info) * MAX_DECODE_BUFFERS); + } + + if (psb_fp->bcd_index >= 0 && + psb_fp->bcd_index < BC_VIDEO_DEVICE_MAX_ID && + bc_video_id_usage[psb_fp->bcd_index] == 1) { + bc_video_id_usage[psb_fp->bcd_index] = 0; + BC_DestroyBuffers(psb_fp->bcd_index); + } + + ttm_object_file_release(&psb_fp->tfile); + kfree(psb_fp); + + /* remove video context */ + psb_remove_videoctx(dev_priv, filp); + + ret = drm_release(inode, filp); + + return ret; +} + +int psb_fence_signaled_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + + return ttm_fence_signaled_ioctl(psb_fpriv(file_priv)->tfile, data); +} + +int psb_fence_finish_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return ttm_fence_finish_ioctl(psb_fpriv(file_priv)->tfile, data); +} + +int psb_fence_unref_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return ttm_fence_unref_ioctl(psb_fpriv(file_priv)->tfile, data); +} + +int psb_pl_waitidle_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return ttm_pl_waitidle_ioctl(psb_fpriv(file_priv)->tfile, data); +} + +int psb_pl_setstatus_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return ttm_pl_setstatus_ioctl(psb_fpriv(file_priv)->tfile, + &psb_priv(dev)->ttm_lock, data); + +} + +int psb_pl_synccpu_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return ttm_pl_synccpu_ioctl(psb_fpriv(file_priv)->tfile, data); +} + +int psb_pl_unref_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return ttm_pl_unref_ioctl(psb_fpriv(file_priv)->tfile, data); + +} + +int psb_pl_reference_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + return ttm_pl_reference_ioctl(psb_fpriv(file_priv)->tfile, data); + +} + +int psb_pl_create_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_psb_private *dev_priv = psb_priv(dev); + + return ttm_pl_create_ioctl(psb_fpriv(file_priv)->tfile, + &dev_priv->bdev, &dev_priv->ttm_lock, data); + +} + +int psb_pl_ub_create_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_psb_private *dev_priv = psb_priv(dev); + + return ttm_pl_ub_create_ioctl(psb_fpriv(file_priv)->tfile, + &dev_priv->bdev, &dev_priv->ttm_lock, data); + +} +/** + * psb_ttm_fault - Wrapper around the ttm fault method. + * + * @vma: The struct vm_area_struct as in the vm fault() method. + * @vmf: The struct vm_fault as in the vm fault() method. + * + * Since ttm_fault() will reserve buffers while faulting, + * we need to take the ttm read lock around it, as this driver + * relies on the ttm_lock in write mode to exclude all threads from + * reserving and thus validating buffers in aperture- and memory shortage + * situations. + */ + +static int psb_ttm_fault(struct vm_area_struct *vma, + struct vm_fault *vmf) +{ + struct ttm_buffer_object *bo = (struct ttm_buffer_object *) + vma->vm_private_data; + struct drm_psb_private *dev_priv = + container_of(bo->bdev, struct drm_psb_private, bdev); + int ret; + + ret = ttm_read_lock(&dev_priv->ttm_lock, true); + if (unlikely(ret != 0)) + return VM_FAULT_NOPAGE; + + ret = dev_priv->ttm_vm_ops->fault(vma, vmf); + + ttm_read_unlock(&dev_priv->ttm_lock); + return ret; +} + +/** + * if vm_pgoff < DRM_PSB_FILE_PAGE_OFFSET call directly to + * PVRMMap + */ +int psb_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct drm_file *file_priv; + struct drm_psb_private *dev_priv; + int ret; + + if (vma->vm_pgoff < DRM_PSB_FILE_PAGE_OFFSET || + vma->vm_pgoff > 2 * DRM_PSB_FILE_PAGE_OFFSET) + return PVRMMap(filp, vma); + + file_priv = (struct drm_file *) filp->private_data; + dev_priv = psb_priv(file_priv->minor->dev); + + ret = ttm_bo_mmap(filp, vma, &dev_priv->bdev); + if (unlikely(ret != 0)) + return ret; + + if (unlikely(dev_priv->ttm_vm_ops == NULL)) { + dev_priv->ttm_vm_ops = (struct vm_operations_struct *)vma->vm_ops; + psb_ttm_vm_ops = *vma->vm_ops; + psb_ttm_vm_ops.fault = &psb_ttm_fault; + } + + vma->vm_ops = &psb_ttm_vm_ops; + + return 0; +} +/* +ssize_t psb_ttm_write(struct file *filp, const char __user *buf, + size_t count, loff_t *f_pos) +{ + struct drm_file *file_priv = (struct drm_file *)filp->private_data; + struct drm_psb_private *dev_priv = psb_priv(file_priv->minor->dev); + + return ttm_bo_io(&dev_priv->bdev, filp, buf, NULL, count, f_pos, 1); +} + +ssize_t psb_ttm_read(struct file *filp, char __user *buf, + size_t count, loff_t *f_pos) +{ + struct drm_file *file_priv = (struct drm_file *)filp->private_data; + struct drm_psb_private *dev_priv = psb_priv(file_priv->minor->dev); + + return ttm_bo_io(&dev_priv->bdev, filp, NULL, buf, count, f_pos, 1); +} +*/ +int psb_verify_access(struct ttm_buffer_object *bo, + struct file *filp) +{ + struct drm_file *file_priv = (struct drm_file *)filp->private_data; + + if (capable(CAP_SYS_ADMIN)) + return 0; + + if (unlikely(!file_priv->authenticated)) + return -EPERM; + + return ttm_pl_verify_access(bo, psb_fpriv(file_priv)->tfile); +} + +static int psb_ttm_mem_global_init(struct drm_global_reference *ref) +{ + return ttm_mem_global_init(ref->object); +} + +static void psb_ttm_mem_global_release(struct drm_global_reference *ref) +{ + ttm_mem_global_release(ref->object); +} + +int psb_ttm_global_init(struct drm_psb_private *dev_priv) +{ + struct drm_global_reference *global_ref; + int ret; + + global_ref = &dev_priv->mem_global_ref; + global_ref->global_type = DRM_GLOBAL_TTM_MEM; + global_ref->size = sizeof(struct ttm_mem_global); + global_ref->init = &psb_ttm_mem_global_init; + global_ref->release = &psb_ttm_mem_global_release; + + ret = drm_global_item_ref(global_ref); + if (unlikely(ret != 0)) { + DRM_ERROR("Failed referencing a global TTM memory object.\n"); + return ret; + } + + dev_priv->bo_global_ref.mem_glob = dev_priv->mem_global_ref.object; + global_ref = &dev_priv->bo_global_ref.ref; + global_ref->global_type = DRM_GLOBAL_TTM_BO; + global_ref->size = sizeof(struct ttm_bo_global); + global_ref->init = &ttm_bo_global_init; + global_ref->release = &ttm_bo_global_release; + ret = drm_global_item_ref(global_ref); + if (ret != 0) { + DRM_ERROR("Failed setting up TTM BO subsystem.\n"); + drm_global_item_unref(&dev_priv->mem_global_ref); + return ret; + } + + return 0; +} + +void psb_ttm_global_release(struct drm_psb_private *dev_priv) +{ + drm_global_item_unref(&dev_priv->mem_global_ref); +} + +int psb_getpageaddrs_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) +{ + struct drm_psb_getpageaddrs_arg *arg = data; + struct ttm_buffer_object *bo; + struct ttm_tt *ttm; + struct page **tt_pages; + unsigned long i, num_pages; + unsigned long *p = arg->page_addrs; + int ret = 0; + + bo = ttm_buffer_object_lookup(psb_fpriv(file_priv)->tfile, + arg->handle); + if (unlikely(bo == NULL)) { + printk(KERN_ERR + "Could not find buffer object for getpageaddrs.\n"); + return -EINVAL; + } + + arg->gtt_offset = bo->offset; + ttm = bo->ttm; + num_pages = ttm->num_pages; + tt_pages = ttm->pages; + + for (i = 0; i < num_pages; i++) + p[i] = (unsigned long)page_to_phys(tt_pages[i]); + + if (bo) + ttm_bo_unref(&bo); + + return ret; +} |