/* * Copyright 2021 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * */ #include <linux/devcoredump.h>#include <generated/utsrelease.h> #include "amdgpu_reset.h"#include "aldebaran.h"#include "sienna_cichlid.h"#include "smu_v13_0_10.h" int amdgpu_reset_init(struct amdgpu_device *adev){	int ret = 0; 	switch (amdgpu_ip_version(adev, MP1_HWIP, 0)) {	case IP_VERSION(13, 0, 2):	case IP_VERSION(13, 0, 6):		ret = aldebaran_reset_init(adev);		break;	case IP_VERSION(11, 0, 7):		ret = sienna_cichlid_reset_init(adev);		break;	case IP_VERSION(13, 0, 10):		ret = smu_v13_0_10_reset_init(adev);		break;	default:		break;	} 	return ret;} int amdgpu_reset_fini(struct amdgpu_device *adev){	int ret = 0; 	switch (amdgpu_ip_version(adev, MP1_HWIP, 0)) {	case IP_VERSION(13, 0, 2):	case IP_VERSION(13, 0, 6):		ret = aldebaran_reset_fini(adev);		break;	case IP_VERSION(11, 0, 7):		ret = sienna_cichlid_reset_fini(adev);		break;	case IP_VERSION(13, 0, 10):		ret = smu_v13_0_10_reset_fini(adev);		break;	default:		break;	} 	return ret;} int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,				   struct amdgpu_reset_context *reset_context){	struct amdgpu_reset_handler *reset_handler = NULL; 	if (adev->reset_cntl && adev->reset_cntl->get_reset_handler)		reset_handler = adev->reset_cntl->get_reset_handler(			adev->reset_cntl, reset_context);	if (!reset_handler)		return -EOPNOTSUPP; 	return reset_handler->prepare_hwcontext(adev->reset_cntl,						reset_context);} int amdgpu_reset_perform_reset(struct amdgpu_device *adev,			       struct amdgpu_reset_context *reset_context){	int ret;	struct amdgpu_reset_handler *reset_handler = NULL; 	if (adev->reset_cntl)		reset_handler = adev->reset_cntl->get_reset_handler(			adev->reset_cntl, reset_context);	if (!reset_handler)		return -EOPNOTSUPP; 	ret = reset_handler->perform_reset(adev->reset_cntl, reset_context);	if (ret)		return ret; 	return reset_handler->restore_hwcontext(adev->reset_cntl,						reset_context);}  void amdgpu_reset_destroy_reset_domain(struct kref *ref){	struct amdgpu_reset_domain *reset_domain = container_of(ref,								struct amdgpu_reset_domain,								refcount);	if (reset_domain->wq)		destroy_workqueue(reset_domain->wq); 	kvfree(reset_domain);} struct amdgpu_reset_domain *amdgpu_reset_create_reset_domain(enum amdgpu_reset_domain_type type,							     char *wq_name){	struct amdgpu_reset_domain *reset_domain; 	reset_domain = kvzalloc(sizeof(struct amdgpu_reset_domain), GFP_KERNEL);	if (!reset_domain) {		DRM_ERROR("Failed to allocate amdgpu_reset_domain!");		return NULL;	} 	reset_domain->type = type;	kref_init(&reset_domain->refcount); 	reset_domain->wq = create_singlethread_workqueue(wq_name);	if (!reset_domain->wq) {		DRM_ERROR("Failed to allocate wq for amdgpu_reset_domain!");		amdgpu_reset_put_reset_domain(reset_domain);		return NULL; 	} 	atomic_set(&reset_domain->in_gpu_reset, 0);	atomic_set(&reset_domain->reset_res, 0);	init_rwsem(&reset_domain->sem); 	return reset_domain;} void amdgpu_device_lock_reset_domain(struct amdgpu_reset_domain *reset_domain){	atomic_set(&reset_domain->in_gpu_reset, 1);	down_write(&reset_domain->sem);}  void amdgpu_device_unlock_reset_domain(struct amdgpu_reset_domain *reset_domain){	atomic_set(&reset_domain->in_gpu_reset, 0);	up_write(&reset_domain->sem);} #ifndef CONFIG_DEV_COREDUMPvoid amdgpu_coredump(struct amdgpu_device *adev, bool vram_lost,		     struct amdgpu_reset_context *reset_context){}#elsestatic ssize_tamdgpu_devcoredump_read(char *buffer, loff_t offset, size_t count,			void *data, size_t datalen){	struct drm_printer p;	struct amdgpu_coredump_info *coredump = data;	struct drm_print_iterator iter;	int i; 	iter.data = buffer;	iter.offset = 0;	iter.start = offset;	iter.remain = count; 	p = drm_coredump_printer(&iter); 	drm_printf(&p, "**** AMDGPU Device Coredump ****\n");	drm_printf(&p, "version: " AMDGPU_COREDUMP_VERSION "\n");	drm_printf(&p, "kernel: " UTS_RELEASE "\n");	drm_printf(&p, "module: " KBUILD_MODNAME "\n");	drm_printf(&p, "time: %lld.%09ld\n", coredump->reset_time.tv_sec,			coredump->reset_time.tv_nsec); 	if (coredump->reset_task_info.pid)		drm_printf(&p, "process_name: %s PID: %d\n",			   coredump->reset_task_info.process_name,			   coredump->reset_task_info.pid); 	if (coredump->reset_vram_lost)		drm_printf(&p, "VRAM is lost due to GPU reset!\n");	if (coredump->adev->reset_info.num_regs) {		drm_printf(&p, "AMDGPU register dumps:\nOffset:     Value:\n"); 		for (i = 0; i < coredump->adev->reset_info.num_regs; i++)			drm_printf(&p, "0x%08x: 0x%08x\n",				   coredump->adev->reset_info.reset_dump_reg_list[i],				   coredump->adev->reset_info.reset_dump_reg_value[i]);	} 	return count - iter.remain;} static void amdgpu_devcoredump_free(void *data){	kfree(data);} void amdgpu_coredump(struct amdgpu_device *adev, bool vram_lost,		     struct amdgpu_reset_context *reset_context){	struct amdgpu_coredump_info *coredump;	struct drm_device *dev = adev_to_drm(adev); 	coredump = kzalloc(sizeof(*coredump), GFP_NOWAIT); 	if (!coredump) {		DRM_ERROR("%s: failed to allocate memory for coredump\n", __func__);		return;	} 	coredump->reset_vram_lost = vram_lost; 	if (reset_context->job && reset_context->job->vm)		coredump->reset_task_info = reset_context->job->vm->task_info; 	coredump->adev = adev; 	ktime_get_ts64(&coredump->reset_time); 	dev_coredumpm(dev->dev, THIS_MODULE, coredump, 0, GFP_NOWAIT,		      amdgpu_devcoredump_read, amdgpu_devcoredump_free);}#endif