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      1 /*	$NetBSD: amdgpu_mmhub.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2019 Advanced Micro Devices, 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 "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  */
     25 
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: amdgpu_mmhub.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $");
     28 
     29 #include "amdgpu.h"
     30 #include "amdgpu_ras.h"
     31 
     32 int amdgpu_mmhub_ras_late_init(struct amdgpu_device *adev)
     33 {
     34 	int r;
     35 	struct ras_ih_if ih_info = {
     36 		.cb = NULL,
     37 	};
     38 	struct ras_fs_if fs_info = {
     39 		.sysfs_name = "mmhub_err_count",
     40 		.debugfs_name = "mmhub_err_inject",
     41 	};
     42 
     43 	if (!adev->mmhub.ras_if) {
     44 		adev->mmhub.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
     45 		if (!adev->mmhub.ras_if)
     46 			return -ENOMEM;
     47 		adev->mmhub.ras_if->block = AMDGPU_RAS_BLOCK__MMHUB;
     48 		adev->mmhub.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
     49 		adev->mmhub.ras_if->sub_block_index = 0;
     50 		strcpy(adev->mmhub.ras_if->name, "mmhub");
     51 	}
     52 	ih_info.head = fs_info.head = *adev->mmhub.ras_if;
     53 	r = amdgpu_ras_late_init(adev, adev->mmhub.ras_if,
     54 				 &fs_info, &ih_info);
     55 	if (r || !amdgpu_ras_is_supported(adev, adev->mmhub.ras_if->block)) {
     56 		kfree(adev->mmhub.ras_if);
     57 		adev->mmhub.ras_if = NULL;
     58 	}
     59 
     60 	return r;
     61 }
     62 
     63 void amdgpu_mmhub_ras_fini(struct amdgpu_device *adev)
     64 {
     65 	if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__MMHUB) &&
     66 			adev->mmhub.ras_if) {
     67 		struct ras_common_if *ras_if = adev->mmhub.ras_if;
     68 		struct ras_ih_if ih_info = {
     69 			.cb = NULL,
     70 		};
     71 
     72 		amdgpu_ras_late_fini(adev, ras_if, &ih_info);
     73 		kfree(ras_if);
     74 	}
     75 }
     76