Home | History | Annotate | Line # | Download | only in amdgpu 
      1 /*	$NetBSD: amdgpu_nbio.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 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
     14  * in all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
     17  * OR 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) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
     20  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
     21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     22  */
     23 
     24 #include <sys/cdefs.h>
     25 __KERNEL_RCSID(0, "$NetBSD: amdgpu_nbio.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $");
     26 
     27 #include "amdgpu.h"
     28 #include "amdgpu_ras.h"
     29 
     30 int amdgpu_nbio_ras_late_init(struct amdgpu_device *adev)
     31 {
     32 	int r;
     33 	struct ras_ih_if ih_info = {
     34 		.cb = NULL,
     35 	};
     36 	struct ras_fs_if fs_info = {
     37 		.sysfs_name = "pcie_bif_err_count",
     38 		.debugfs_name = "pcie_bif_err_inject",
     39 	};
     40 
     41 	if (!adev->nbio.ras_if) {
     42 		adev->nbio.ras_if = kmalloc(sizeof(struct ras_common_if), GFP_KERNEL);
     43 		if (!adev->nbio.ras_if)
     44 			return -ENOMEM;
     45 		adev->nbio.ras_if->block = AMDGPU_RAS_BLOCK__PCIE_BIF;
     46 		adev->nbio.ras_if->type = AMDGPU_RAS_ERROR__MULTI_UNCORRECTABLE;
     47 		adev->nbio.ras_if->sub_block_index = 0;
     48 		strcpy(adev->nbio.ras_if->name, "pcie_bif");
     49 	}
     50 	ih_info.head = fs_info.head = *adev->nbio.ras_if;
     51 	r = amdgpu_ras_late_init(adev, adev->nbio.ras_if,
     52 				 &fs_info, &ih_info);
     53 	if (r)
     54 		goto free;
     55 
     56 	if (amdgpu_ras_is_supported(adev, adev->nbio.ras_if->block)) {
     57 		r = amdgpu_irq_get(adev, &adev->nbio.ras_controller_irq, 0);
     58 		if (r)
     59 			goto late_fini;
     60 		r = amdgpu_irq_get(adev, &adev->nbio.ras_err_event_athub_irq, 0);
     61 		if (r)
     62 			goto late_fini;
     63 	} else {
     64 		r = 0;
     65 		goto free;
     66 	}
     67 
     68 	return 0;
     69 late_fini:
     70 	amdgpu_ras_late_fini(adev, adev->nbio.ras_if, &ih_info);
     71 free:
     72 	kfree(adev->nbio.ras_if);
     73 	adev->nbio.ras_if = NULL;
     74 	return r;
     75 }
     76 
     77 void amdgpu_nbio_ras_fini(struct amdgpu_device *adev)
     78 {
     79 	if (amdgpu_ras_is_supported(adev, AMDGPU_RAS_BLOCK__PCIE_BIF) &&
     80 			adev->nbio.ras_if) {
     81 		struct ras_common_if *ras_if = adev->nbio.ras_if;
     82 		struct ras_ih_if ih_info = {
     83 			.cb = NULL,
     84 		};
     85 
     86 		amdgpu_ras_late_fini(adev, ras_if, &ih_info);
     87 		kfree(ras_if);
     88 	}
     89 }
     90