Home | History | Annotate | Line # | Download | only in ast 
      1 /*	$NetBSD: ast_ttm.c,v 1.3 2021/12/18 23:45:27 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012 Red Hat Inc.
      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 SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     16  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     17  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
     18  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     19  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     20  * USE OR OTHER DEALINGS IN THE SOFTWARE.
     21  *
     22  * The above copyright notice and this permission notice (including the
     23  * next paragraph) shall be included in all copies or substantial portions
     24  * of the Software.
     25  *
     26  */
     27 /*
     28  * Authors: Dave Airlie <airlied (at) redhat.com>
     29  */
     30 
     31 #include <sys/cdefs.h>
     32 __KERNEL_RCSID(0, "$NetBSD: ast_ttm.c,v 1.3 2021/12/18 23:45:27 riastradh Exp $");
     33 
     34 #include <linux/pci.h>
     35 
     36 #include <drm/drm_print.h>
     37 #include <drm/drm_gem_vram_helper.h>
     38 
     39 #include "ast_drv.h"
     40 
     41 int ast_mm_init(struct ast_private *ast)
     42 {
     43 	struct drm_vram_mm *vmm;
     44 	int ret;
     45 	struct drm_device *dev = ast->dev;
     46 
     47 	vmm = drm_vram_helper_alloc_mm(
     48 		dev, pci_resource_start(dev->pdev, 0),
     49 		ast->vram_size);
     50 	if (IS_ERR(vmm)) {
     51 		ret = PTR_ERR(vmm);
     52 		DRM_ERROR("Error initializing VRAM MM; %d\n", ret);
     53 		return ret;
     54 	}
     55 
     56 	arch_io_reserve_memtype_wc(pci_resource_start(dev->pdev, 0),
     57 				   pci_resource_len(dev->pdev, 0));
     58 	ast->fb_mtrr = arch_phys_wc_add(pci_resource_start(dev->pdev, 0),
     59 					pci_resource_len(dev->pdev, 0));
     60 
     61 	return 0;
     62 }
     63 
     64 void ast_mm_fini(struct ast_private *ast)
     65 {
     66 	struct drm_device *dev = ast->dev;
     67 
     68 	drm_vram_helper_release_mm(dev);
     69 
     70 	arch_phys_wc_del(ast->fb_mtrr);
     71 	arch_io_free_memtype_wc(pci_resource_start(dev->pdev, 0),
     72 				pci_resource_len(dev->pdev, 0));
     73 }
     74