--- /dev/null
+/*
+ * 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 "aldebaran.h"
+#include "amdgpu_reset.h"
+#include "amdgpu_amdkfd.h"
+#include "amdgpu_dpm.h"
+#include "amdgpu_job.h"
+#include "amdgpu_ring.h"
+#include "amdgpu_ras.h"
+#include "amdgpu_psp.h"
+#include "amdgpu_xgmi.h"
+
+static struct amdgpu_reset_handler *
+aldebaran_get_reset_handler(struct amdgpu_reset_control *reset_ctl,
+ struct amdgpu_reset_context *reset_context)
+{
+ struct amdgpu_reset_handler *handler;
+ struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+
+ if (reset_context->method != AMD_RESET_METHOD_NONE) {
+ dev_dbg(adev->dev, "Getting reset handler for method %d\n",
+ reset_context->method);
+ list_for_each_entry(handler, &reset_ctl->reset_handlers,
+ handler_list) {
+ if (handler->reset_method == reset_context->method)
+ return handler;
+ }
+ }
+
+ if (adev->gmc.xgmi.connected_to_cpu) {
+ list_for_each_entry(handler, &reset_ctl->reset_handlers,
+ handler_list) {
+ if (handler->reset_method == AMD_RESET_METHOD_MODE2) {
+ reset_context->method = AMD_RESET_METHOD_MODE2;
+ return handler;
+ }
+ }
+ }
+
+ dev_dbg(adev->dev, "Reset handler not found!\n");
+
+ return NULL;
+}
+
+static int aldebaran_mode2_suspend_ip(struct amdgpu_device *adev)
+{
+ int r, i;
+
+ amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
+ amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);
+
+ for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
+ if (!(adev->ip_blocks[i].version->type ==
+ AMD_IP_BLOCK_TYPE_GFX ||
+ adev->ip_blocks[i].version->type ==
+ AMD_IP_BLOCK_TYPE_SDMA))
+ continue;
+
+ r = adev->ip_blocks[i].version->funcs->suspend(adev);
+
+ if (r) {
+ dev_err(adev->dev,
+ "suspend of IP block <%s> failed %d\n",
+ adev->ip_blocks[i].version->funcs->name, r);
+ return r;
+ }
+
+ adev->ip_blocks[i].status.hw = false;
+ }
+
+ return r;
+}
+
+static int
+aldebaran_mode2_prepare_hwcontext(struct amdgpu_reset_control *reset_ctl,
+ struct amdgpu_reset_context *reset_context)
+{
+ int r = 0;
+ struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+
+ dev_dbg(adev->dev, "Aldebaran prepare hw context\n");
+ /* Don't suspend on bare metal if we are not going to HW reset the ASIC */
+ if (!amdgpu_sriov_vf(adev))
+ r = aldebaran_mode2_suspend_ip(adev);
+
+ return r;
+}
+
+void aldebaran_async_reset(struct work_struct *work)
+{
+ struct amdgpu_reset_handler *handler;
+ struct amdgpu_reset_control *reset_ctl =
+ container_of(work, struct amdgpu_reset_control, reset_work);
+ struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+
+ list_for_each_entry(handler, &reset_ctl->reset_handlers,
+ handler_list) {
+ if (handler->reset_method == reset_ctl->active_reset) {
+ dev_dbg(adev->dev, "Resetting device\n");
+ handler->do_reset(adev);
+ break;
+ }
+ }
+}
+
+static int aldebaran_mode2_reset(struct amdgpu_device *adev)
+{
+ /* disable BM */
+ pci_clear_master(adev->pdev);
+ adev->asic_reset_res = amdgpu_dpm_mode2_reset(adev);
+ return adev->asic_reset_res;
+}
+
+static int
+aldebaran_mode2_perform_reset(struct amdgpu_reset_control *reset_ctl,
+ struct amdgpu_reset_context *reset_context)
+{
+ struct amdgpu_device *tmp_adev = NULL;
+ struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
+ int r = 0;
+
+ dev_dbg(adev->dev, "aldebaran perform hw reset\n");
+ if (reset_context->hive == NULL) {
+ /* Wrong context, return error */
+ return -EINVAL;
+ }
+
+ list_for_each_entry(tmp_adev, &reset_context->hive->device_list,
+ gmc.xgmi.head) {
+ mutex_lock(&tmp_adev->reset_cntl->reset_lock);
+ tmp_adev->reset_cntl->active_reset = AMD_RESET_METHOD_MODE2;
+ }
+ /*
+ * Mode2 reset doesn't need any sync between nodes in XGMI hive, instead launch
+ * them together so that they can be completed asynchronously on multiple nodes
+ */
+ list_for_each_entry(tmp_adev, &reset_context->hive->device_list,
+ gmc.xgmi.head) {
+ /* For XGMI run all resets in parallel to speed up the process */
+ if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
+ if (!queue_work(system_unbound_wq,
+ &tmp_adev->reset_cntl->reset_work))
+ r = -EALREADY;
+ } else
+ r = aldebaran_mode2_reset(tmp_adev);
+ if (r) {
+ dev_err(tmp_adev->dev,
+ "ASIC reset failed with error, %d for drm dev, %s",
+ r, adev_to_drm(tmp_adev)->unique);
+ break;
+ }
+ }
+
+ /* For XGMI wait for all resets to complete before proceed */
+ if (!r) {
+ list_for_each_entry(tmp_adev,
+ &reset_context->hive->device_list,
+ gmc.xgmi.head) {
+ if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
+ flush_work(&tmp_adev->reset_cntl->reset_work);
+ r = tmp_adev->asic_reset_res;
+ if (r)
+ break;
+ }
+ }
+ }
+
+ list_for_each_entry(tmp_adev, &reset_context->hive->device_list,
+ gmc.xgmi.head) {
+ mutex_unlock(&tmp_adev->reset_cntl->reset_lock);
+ tmp_adev->reset_cntl->active_reset = AMD_RESET_METHOD_NONE;
+ }
+
+ return r;
+}
+
+static int aldebaran_mode2_restore_ip(struct amdgpu_device *adev)
+{
+ struct amdgpu_firmware_info *ucode_list[AMDGPU_UCODE_ID_MAXIMUM];
+ struct amdgpu_firmware_info *ucode;
+ struct amdgpu_ip_block *cmn_block;
+ int ucode_count = 0;
+ int i, r;
+
+ dev_dbg(adev->dev, "Reloading ucodes after reset\n");
+ for (i = 0; i < adev->firmware.max_ucodes; i++) {
+ ucode = &adev->firmware.ucode[i];
+ if (!ucode->fw)
+ continue;
+ switch (ucode->ucode_id) {
+ case AMDGPU_UCODE_ID_SDMA0:
+ case AMDGPU_UCODE_ID_SDMA1:
+ case AMDGPU_UCODE_ID_SDMA2:
+ case AMDGPU_UCODE_ID_SDMA3:
+ case AMDGPU_UCODE_ID_SDMA4:
+ case AMDGPU_UCODE_ID_SDMA5:
+ case AMDGPU_UCODE_ID_SDMA6:
+ case AMDGPU_UCODE_ID_SDMA7:
+ case AMDGPU_UCODE_ID_CP_MEC1:
+ case AMDGPU_UCODE_ID_CP_MEC1_JT:
+ case AMDGPU_UCODE_ID_RLC_RESTORE_LIST_CNTL:
+ case AMDGPU_UCODE_ID_RLC_RESTORE_LIST_GPM_MEM:
+ case AMDGPU_UCODE_ID_RLC_RESTORE_LIST_SRM_MEM:
+ case AMDGPU_UCODE_ID_RLC_G:
+ ucode_list[ucode_count++] = ucode;
+ break;
+ default:
+ break;
+ };
+ }
+
+ /* Reinit NBIF block */
+ cmn_block =
+ amdgpu_device_ip_get_ip_block(adev, AMD_IP_BLOCK_TYPE_COMMON);
+ if (unlikely(!cmn_block)) {
+ dev_err(adev->dev, "Failed to get BIF handle\n");
+ return -EINVAL;
+ }
+ r = cmn_block->version->funcs->resume(adev);
+ if (r)
+ return r;
+
+ /* Reinit GFXHUB */
+ adev->gfxhub.funcs->init(adev);
+ r = adev->gfxhub.funcs->gart_enable(adev);
+ if (r) {
+ dev_err(adev->dev, "GFXHUB gart reenable failed after reset\n");
+ return r;
+ }
+
+ /* Reload GFX firmware */
+ r = psp_load_fw_list(&adev->psp, ucode_list, ucode_count);
+ if (r) {
+ dev_err(adev->dev, "GFX ucode load failed after reset\n");
+ return r;
+ }
+
+ /* Resume RLC, FW needs RLC alive to complete reset process */
+ adev->gfx.rlc.funcs->resume(adev);
+
+ /* Wait for FW reset event complete */
+ r = smu_wait_for_event(adev, SMU_EVENT_RESET_COMPLETE, 0);
+ if (r) {
+ dev_err(adev->dev,
+ "Failed to get response from firmware after reset\n");
+ return r;
+ }
+
+ for (i = 0; i < adev->num_ip_blocks; i++) {
+ if (!(adev->ip_blocks[i].version->type ==
+ AMD_IP_BLOCK_TYPE_GFX ||
+ adev->ip_blocks[i].version->type ==
+ AMD_IP_BLOCK_TYPE_SDMA))
+ continue;
+ r = adev->ip_blocks[i].version->funcs->resume(adev);
+ if (r) {
+ dev_err(adev->dev,
+ "resume of IP block <%s> failed %d\n",
+ adev->ip_blocks[i].version->funcs->name, r);
+ return r;
+ }
+
+ adev->ip_blocks[i].status.hw = true;
+ }
+
+ for (i = 0; i < adev->num_ip_blocks; i++) {
+ if (!(adev->ip_blocks[i].version->type ==
+ AMD_IP_BLOCK_TYPE_GFX ||
+ adev->ip_blocks[i].version->type ==
+ AMD_IP_BLOCK_TYPE_SDMA ||
+ adev->ip_blocks[i].version->type ==
+ AMD_IP_BLOCK_TYPE_COMMON))
+ continue;
+
+ if (adev->ip_blocks[i].version->funcs->late_init) {
+ r = adev->ip_blocks[i].version->funcs->late_init(
+ (void *)adev);
+ if (r) {
+ dev_err(adev->dev,
+ "late_init of IP block <%s> failed %d after reset\n",
+ adev->ip_blocks[i].version->funcs->name,
+ r);
+ return r;
+ }
+ }
+ adev->ip_blocks[i].status.late_initialized = true;
+ }
+
+ amdgpu_device_set_cg_state(adev, AMD_CG_STATE_GATE);
+ amdgpu_device_set_pg_state(adev, AMD_PG_STATE_GATE);
+
+ return r;
+}
+
+static int
+aldebaran_mode2_restore_hwcontext(struct amdgpu_reset_control *reset_ctl,
+ struct amdgpu_reset_context *reset_context)
+{
+ int r;
+ struct amdgpu_device *tmp_adev = NULL;
+
+ if (reset_context->hive == NULL) {
+ /* Wrong context, return error */
+ return -EINVAL;
+ }
+
+ list_for_each_entry(tmp_adev, &reset_context->hive->device_list,
+ gmc.xgmi.head) {
+ dev_info(tmp_adev->dev,
+ "GPU reset succeeded, trying to resume\n");
+ r = aldebaran_mode2_restore_ip(tmp_adev);
+ if (r)
+ goto end;
+
+ /*
+ * Add this ASIC as tracked as reset was already
+ * complete successfully.
+ */
+ amdgpu_register_gpu_instance(tmp_adev);
+
+ /* Resume RAS */
+ amdgpu_ras_resume(tmp_adev);
+
+ /* Update PSP FW topology after reset */
+ if (reset_context->hive &&
+ tmp_adev->gmc.xgmi.num_physical_nodes > 1)
+ r = amdgpu_xgmi_update_topology(reset_context->hive,
+ tmp_adev);
+
+ if (!r) {
+ amdgpu_irq_gpu_reset_resume_helper(tmp_adev);
+
+ r = amdgpu_ib_ring_tests(tmp_adev);
+ if (r) {
+ dev_err(tmp_adev->dev,
+ "ib ring test failed (%d).\n", r);
+ r = -EAGAIN;
+ tmp_adev->asic_reset_res = r;
+ goto end;
+ }
+ }
+ }
+
+end:
+ return r;
+}
+
+static struct amdgpu_reset_handler aldebaran_mode2_handler = {
+ .reset_method = AMD_RESET_METHOD_MODE2,
+ .prepare_env = NULL,
+ .prepare_hwcontext = aldebaran_mode2_prepare_hwcontext,
+ .perform_reset = aldebaran_mode2_perform_reset,
+ .restore_hwcontext = aldebaran_mode2_restore_hwcontext,
+ .restore_env = NULL,
+ .do_reset = aldebaran_mode2_reset,
+};
+
+int aldebaran_reset_init(struct amdgpu_device *adev)
+{
+ struct amdgpu_reset_control *reset_ctl;
+
+ reset_ctl = kzalloc(sizeof(*reset_ctl), GFP_KERNEL);
+ if (!reset_ctl)
+ return -ENOMEM;
+
+ reset_ctl->handle = adev;
+ reset_ctl->async_reset = aldebaran_async_reset;
+ reset_ctl->active_reset = AMD_RESET_METHOD_NONE;
+ reset_ctl->get_reset_handler = aldebaran_get_reset_handler;
+
+ INIT_LIST_HEAD(&reset_ctl->reset_handlers);
+ INIT_WORK(&reset_ctl->reset_work, reset_ctl->async_reset);
+ /* Only mode2 is handled through reset control now */
+ amdgpu_reset_add_handler(reset_ctl, &aldebaran_mode2_handler);
+
+ adev->reset_cntl = reset_ctl;
+
+ return 0;
+}
+
+int aldebaran_reset_fini(struct amdgpu_device *adev)
+{
+ kfree(adev->reset_cntl);
+ adev->reset_cntl = NULL;
+ return 0;
+}
projects / users / jedix / linux-maple.git / commitdiff