diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c new file mode 100644 index 000000000000..28c4ad62f50e --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c @@ -0,0 +1,354 @@ +/* + * 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 "amdgpu_reset.h" +#include "aldebaran.h" +#include "sienna_cichlid.h" +#include "smu_v13_0_10.h" + +static int amdgpu_reset_xgmi_reset_on_init_suspend(struct amdgpu_device *adev) +{ + int i; + + for (i = adev->num_ip_blocks - 1; i >= 0; i--) { + if (!adev->ip_blocks[i].status.valid) + continue; + if (!adev->ip_blocks[i].status.hw) + continue; + /* displays are handled in phase1 */ + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE) + continue; + + /* XXX handle errors */ + amdgpu_ip_block_suspend(&adev->ip_blocks[i]); + adev->ip_blocks[i].status.hw = false; + } + + /* VCN FW shared region is in frambuffer, there are some flags + * initialized in that region during sw_init. Make sure the region is + * backed up. + */ + amdgpu_vcn_save_vcpu_bo(adev); + + return 0; +} + +static int amdgpu_reset_xgmi_reset_on_init_prep_hwctxt( + struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *reset_context) +{ + struct list_head *reset_device_list = reset_context->reset_device_list; + struct amdgpu_device *tmp_adev; + int r; + + list_for_each_entry(tmp_adev, reset_device_list, reset_list) { + amdgpu_unregister_gpu_instance(tmp_adev); + r = amdgpu_reset_xgmi_reset_on_init_suspend(tmp_adev); + if (r) { + dev_err(tmp_adev->dev, + "xgmi reset on init: prepare for reset failed"); + return r; + } + } + + return r; +} + +static int amdgpu_reset_xgmi_reset_on_init_restore_hwctxt( + struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *reset_context) +{ + struct list_head *reset_device_list = reset_context->reset_device_list; + struct amdgpu_device *tmp_adev = NULL; + int r; + + r = amdgpu_device_reinit_after_reset(reset_context); + if (r) + return r; + list_for_each_entry(tmp_adev, reset_device_list, reset_list) { + if (!tmp_adev->kfd.init_complete) { + kgd2kfd_init_zone_device(tmp_adev); + amdgpu_amdkfd_device_init(tmp_adev); + amdgpu_amdkfd_drm_client_create(tmp_adev); + } + } + + return r; +} + +static int amdgpu_reset_xgmi_reset_on_init_perform_reset( + struct amdgpu_reset_control *reset_ctl, + struct amdgpu_reset_context *reset_context) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle; + struct list_head *reset_device_list = reset_context->reset_device_list; + struct amdgpu_device *tmp_adev = NULL; + int r; + + dev_dbg(adev->dev, "xgmi roi - hw reset\n"); + + list_for_each_entry(tmp_adev, reset_device_list, reset_list) { + mutex_lock(&tmp_adev->reset_cntl->reset_lock); + tmp_adev->reset_cntl->active_reset = + amdgpu_asic_reset_method(adev); + } + r = 0; + /* Mode1 reset needs to be triggered on all devices together */ + list_for_each_entry(tmp_adev, reset_device_list, reset_list) { + /* For XGMI run all resets in parallel to speed up the process */ + if (!queue_work(system_unbound_wq, &tmp_adev->xgmi_reset_work)) + r = -EALREADY; + if (r) { + dev_err(tmp_adev->dev, + "xgmi reset on init: reset failed with error, %d", + r); + break; + } + } + + /* For XGMI wait for all resets to complete before proceed */ + if (!r) { + list_for_each_entry(tmp_adev, reset_device_list, reset_list) { + flush_work(&tmp_adev->xgmi_reset_work); + r = tmp_adev->asic_reset_res; + if (r) + break; + } + } + + list_for_each_entry(tmp_adev, reset_device_list, reset_list) { + mutex_unlock(&tmp_adev->reset_cntl->reset_lock); + tmp_adev->reset_cntl->active_reset = AMD_RESET_METHOD_NONE; + } + + return r; +} + +int amdgpu_reset_do_xgmi_reset_on_init( + struct amdgpu_reset_context *reset_context) +{ + struct list_head *reset_device_list = reset_context->reset_device_list; + struct amdgpu_device *adev; + int r; + + if (!reset_device_list || list_empty(reset_device_list) || + list_is_singular(reset_device_list)) + return -EINVAL; + + adev = list_first_entry(reset_device_list, struct amdgpu_device, + reset_list); + r = amdgpu_reset_prepare_hwcontext(adev, reset_context); + if (r) + return r; + + r = amdgpu_reset_perform_reset(adev, reset_context); + + return r; +} + +struct amdgpu_reset_handler xgmi_reset_on_init_handler = { + .reset_method = AMD_RESET_METHOD_ON_INIT, + .prepare_env = NULL, + .prepare_hwcontext = amdgpu_reset_xgmi_reset_on_init_prep_hwctxt, + .perform_reset = amdgpu_reset_xgmi_reset_on_init_perform_reset, + .restore_hwcontext = amdgpu_reset_xgmi_reset_on_init_restore_hwctxt, + .restore_env = NULL, + .do_reset = NULL, +}; + +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): + case IP_VERSION(13, 0, 12): + case IP_VERSION(13, 0, 14): + 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): + case IP_VERSION(13, 0, 12): + case IP_VERSION(13, 0, 14): + 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); +} + +void amdgpu_reset_get_desc(struct amdgpu_reset_context *rst_ctxt, char *buf, + size_t len) +{ + if (!buf || !len) + return; + + switch (rst_ctxt->src) { + case AMDGPU_RESET_SRC_JOB: + if (rst_ctxt->job) { + snprintf(buf, len, "job hang on ring:%s", + rst_ctxt->job->base.sched->name); + } else { + strscpy(buf, "job hang", len); + } + break; + case AMDGPU_RESET_SRC_RAS: + strscpy(buf, "RAS error", len); + break; + case AMDGPU_RESET_SRC_MES: + strscpy(buf, "MES hang", len); + break; + case AMDGPU_RESET_SRC_HWS: + strscpy(buf, "HWS hang", len); + break; + case AMDGPU_RESET_SRC_USER: + strscpy(buf, "user trigger", len); + break; + case AMDGPU_RESET_SRC_USERQ: + strscpy(buf, "user queue trigger", len); + break; + default: + strscpy(buf, "unknown", len); + } +} + +bool amdgpu_reset_in_recovery(struct amdgpu_device *adev) +{ + return (adev->init_lvl->level == AMDGPU_INIT_LEVEL_RESET_RECOVERY); +} |