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      1 /*	$NetBSD: qxl_prime.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2014 Canonical
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Andreas Pokorny
     25  */
     26 
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: qxl_prime.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $");
     29 
     30 #include "qxl_drv.h"
     31 #include "qxl_object.h"
     32 
     33 /* Empty Implementations as there should not be any other driver for a virtual
     34  * device that might share buffers with qxl */
     35 
     36 int qxl_gem_prime_pin(struct drm_gem_object *obj)
     37 {
     38 	struct qxl_bo *bo = gem_to_qxl_bo(obj);
     39 
     40 	return qxl_bo_pin(bo);
     41 }
     42 
     43 void qxl_gem_prime_unpin(struct drm_gem_object *obj)
     44 {
     45 	struct qxl_bo *bo = gem_to_qxl_bo(obj);
     46 
     47 	qxl_bo_unpin(bo);
     48 }
     49 
     50 struct sg_table *qxl_gem_prime_get_sg_table(struct drm_gem_object *obj)
     51 {
     52 	return ERR_PTR(-ENOSYS);
     53 }
     54 
     55 struct drm_gem_object *qxl_gem_prime_import_sg_table(
     56 	struct drm_device *dev, struct dma_buf_attachment *attach,
     57 	struct sg_table *table)
     58 {
     59 	return ERR_PTR(-ENOSYS);
     60 }
     61 
     62 void *qxl_gem_prime_vmap(struct drm_gem_object *obj)
     63 {
     64 	struct qxl_bo *bo = gem_to_qxl_bo(obj);
     65 	void *ptr;
     66 	int ret;
     67 
     68 	ret = qxl_bo_kmap(bo, &ptr);
     69 	if (ret < 0)
     70 		return ERR_PTR(ret);
     71 
     72 	return ptr;
     73 }
     74 
     75 void qxl_gem_prime_vunmap(struct drm_gem_object *obj, void *vaddr)
     76 {
     77 	struct qxl_bo *bo = gem_to_qxl_bo(obj);
     78 
     79 	qxl_bo_kunmap(bo);
     80 }
     81 
     82 int qxl_gem_prime_mmap(struct drm_gem_object *obj,
     83 		       struct vm_area_struct *area)
     84 {
     85 	return -ENOSYS;
     86 }
     87