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      1 /*	$NetBSD: amdgpu_vf_error.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2017 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_vf_error.c,v 1.2 2021/12/18 23:44:58 riastradh Exp $");
     28 
     29 #include "amdgpu.h"
     30 #include "amdgpu_vf_error.h"
     31 #include "mxgpu_ai.h"
     32 
     33 void amdgpu_vf_error_put(struct amdgpu_device *adev,
     34 			 uint16_t sub_error_code,
     35 			 uint16_t error_flags,
     36 			 uint64_t error_data)
     37 {
     38 	int index;
     39 	uint16_t error_code;
     40 
     41 	if (!amdgpu_sriov_vf(adev))
     42 		return;
     43 
     44 	error_code = AMDGIM_ERROR_CODE(AMDGIM_ERROR_CATEGORY_VF, sub_error_code);
     45 
     46 	mutex_lock(&adev->virt.vf_errors.lock);
     47 	index = adev->virt.vf_errors.write_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
     48 	adev->virt.vf_errors.code [index] = error_code;
     49 	adev->virt.vf_errors.flags [index] = error_flags;
     50 	adev->virt.vf_errors.data [index] = error_data;
     51 	adev->virt.vf_errors.write_count ++;
     52 	mutex_unlock(&adev->virt.vf_errors.lock);
     53 }
     54 
     55 
     56 void amdgpu_vf_error_trans_all(struct amdgpu_device *adev)
     57 {
     58 	/* u32 pf2vf_flags = 0; */
     59 	u32 data1, data2, data3;
     60 	int index;
     61 
     62 	if ((NULL == adev) || (!amdgpu_sriov_vf(adev)) ||
     63 	    (!adev->virt.ops) || (!adev->virt.ops->trans_msg)) {
     64 		return;
     65 	}
     66 /*
     67  	TODO: Enable these code when pv2vf_info is merged
     68 	AMDGPU_FW_VRAM_PF2VF_READ (adev, feature_flags, &pf2vf_flags);
     69 	if (!(pf2vf_flags & AMDGIM_FEATURE_ERROR_LOG_COLLECT)) {
     70 		return;
     71 	}
     72 */
     73 
     74 	mutex_lock(&adev->virt.vf_errors.lock);
     75 	/* The errors are overlay of array, correct read_count as full. */
     76 	if (adev->virt.vf_errors.write_count - adev->virt.vf_errors.read_count > AMDGPU_VF_ERROR_ENTRY_SIZE) {
     77 		adev->virt.vf_errors.read_count = adev->virt.vf_errors.write_count - AMDGPU_VF_ERROR_ENTRY_SIZE;
     78 	}
     79 
     80 	while (adev->virt.vf_errors.read_count < adev->virt.vf_errors.write_count) {
     81 		index =adev->virt.vf_errors.read_count % AMDGPU_VF_ERROR_ENTRY_SIZE;
     82 		data1 = AMDGIM_ERROR_CODE_FLAGS_TO_MAILBOX(adev->virt.vf_errors.code[index],
     83 							   adev->virt.vf_errors.flags[index]);
     84 		data2 = adev->virt.vf_errors.data[index] & 0xFFFFFFFF;
     85 		data3 = (adev->virt.vf_errors.data[index] >> 32) & 0xFFFFFFFF;
     86 
     87 		adev->virt.ops->trans_msg(adev, IDH_LOG_VF_ERROR, data1, data2, data3);
     88 		adev->virt.vf_errors.read_count ++;
     89 	}
     90 	mutex_unlock(&adev->virt.vf_errors.lock);
     91 }
     92