1 // SPDX-License-Identifier: GPL-2.0 OR MIT 2 /************************************************************************** 3 * 4 * Copyright 2009-2011 VMware, Inc., Palo Alto, CA., USA 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the 8 * "Software"), to deal in the Software without restriction, including 9 * without limitation the rights to use, copy, modify, merge, publish, 10 * distribute, sub license, and/or sell copies of the Software, and to 11 * permit persons to whom the Software is furnished to do so, subject to 12 * the following conditions: 13 * 14 * The above copyright notice and this permission notice (including the 15 * next paragraph) shall be included in all copies or substantial portions 16 * of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 24 * USE OR OTHER DEALINGS IN THE SOFTWARE. 25 * 26 **************************************************************************/ 27 28 #include "vmwgfx_drv.h" 29 30 int vmw_mmap(struct file *filp, struct vm_area_struct *vma) 31 { 32 static const struct vm_operations_struct vmw_vm_ops = { 33 .pfn_mkwrite = vmw_bo_vm_mkwrite, 34 .page_mkwrite = vmw_bo_vm_mkwrite, 35 .fault = vmw_bo_vm_fault, 36 .open = ttm_bo_vm_open, 37 .close = ttm_bo_vm_close 38 }; 39 struct drm_file *file_priv = filp->private_data; 40 struct vmw_private *dev_priv = vmw_priv(file_priv->minor->dev); 41 int ret = ttm_bo_mmap(filp, vma, &dev_priv->bdev); 42 43 if (ret) 44 return ret; 45 46 vma->vm_ops = &vmw_vm_ops; 47 48 return 0; 49 } 50 51 /* struct vmw_validation_mem callback */ 52 static int vmw_vmt_reserve(struct vmw_validation_mem *m, size_t size) 53 { 54 static struct ttm_operation_ctx ctx = {.interruptible = false, 55 .no_wait_gpu = false}; 56 struct vmw_private *dev_priv = container_of(m, struct vmw_private, vvm); 57 58 return ttm_mem_global_alloc(vmw_mem_glob(dev_priv), size, &ctx); 59 } 60 61 /* struct vmw_validation_mem callback */ 62 static void vmw_vmt_unreserve(struct vmw_validation_mem *m, size_t size) 63 { 64 struct vmw_private *dev_priv = container_of(m, struct vmw_private, vvm); 65 66 return ttm_mem_global_free(vmw_mem_glob(dev_priv), size); 67 } 68 69 /** 70 * vmw_validation_mem_init_ttm - Interface the validation memory tracker 71 * to ttm. 72 * @dev_priv: Pointer to struct vmw_private. The reason we choose a vmw private 73 * rather than a struct vmw_validation_mem is to make sure assumption in the 74 * callbacks that struct vmw_private derives from struct vmw_validation_mem 75 * holds true. 76 * @gran: The recommended allocation granularity 77 */ 78 void vmw_validation_mem_init_ttm(struct vmw_private *dev_priv, size_t gran) 79 { 80 struct vmw_validation_mem *vvm = &dev_priv->vvm; 81 82 vvm->reserve_mem = vmw_vmt_reserve; 83 vvm->unreserve_mem = vmw_vmt_unreserve; 84 vvm->gran = gran; 85 } 86