/*
* 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 bool aldebaran_is_mode2_default(struct amdgpu_reset_control *reset_ctl)
{
struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
if ((amdgpu_ip_version(adev, MP1_HWIP, 0) == IP_VERSION(13, 0, 2) &&
adev->gmc.xgmi.connected_to_cpu))
return true;
return false;
}
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;
int i;
if (reset_context->method == AMD_RESET_METHOD_NONE) {
if (aldebaran_is_mode2_default(reset_ctl))
reset_context->method = AMD_RESET_METHOD_MODE2;
else
reset_context->method = amdgpu_asic_reset_method(adev);
}
if (reset_context->method != AMD_RESET_METHOD_NONE) {
dev_dbg(adev->dev, "Getting reset handler for method %d\n",
reset_context->method);
for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == reset_context->method)
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 0;
}
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;
}
static 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;
int i;
for_each_handler(i, handler, reset_ctl) {
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 *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 = 0;
dev_dbg(adev->dev, "aldebaran perform hw reset\n");
if (reset_device_list == NULL)
return -EINVAL;
if (amdgpu_ip_version(adev, MP1_HWIP, 0) == IP_VERSION(13, 0, 2) &&
reset_context->hive == NULL) {
/* Wrong context, return error */
return -EINVAL;
}
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 = 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_device_list, reset_list) {
/* 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_device_list, reset_list) {
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_device_list, reset_list) {
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 = amdgpu_dpm_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)
{
struct list_head *reset_device_list = reset_context->reset_device_list;
struct amdgpu_device *tmp_adev = NULL;
struct amdgpu_ras *con;
int r;
if (reset_device_list == NULL)
return -EINVAL;
if (amdgpu_ip_version(reset_context->reset_req_dev, MP1_HWIP, 0) ==
IP_VERSION(13, 0, 2) &&
reset_context->hive == NULL) {
/* Wrong context, return error */
return -EINVAL;
}
list_for_each_entry(tmp_adev, reset_device_list, reset_list) {
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, ecc_irq */
con = amdgpu_ras_get_context(tmp_adev);
if (!amdgpu_sriov_vf(tmp_adev) && con) {
if (tmp_adev->sdma.ras &&
tmp_adev->sdma.ras->ras_block.ras_late_init) {
r = tmp_adev->sdma.ras->ras_block.ras_late_init(tmp_adev,
&tmp_adev->sdma.ras->ras_block.ras_comm);
if (r) {
dev_err(tmp_adev->dev, "SDMA failed to execute ras_late_init! ret:%d\n", r);
goto end;
}
}
if (tmp_adev->gfx.ras &&
tmp_adev->gfx.ras->ras_block.ras_late_init) {
r = tmp_adev->gfx.ras->ras_block.ras_late_init(tmp_adev,
&tmp_adev->gfx.ras->ras_block.ras_comm);
if (r) {
dev_err(tmp_adev->dev, "GFX failed to execute ras_late_init! ret:%d\n", r);
goto end;
}
}
}
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,
};
static struct amdgpu_reset_handler
*aldebaran_rst_handlers[AMDGPU_RESET_MAX_HANDLERS] = {
&aldebaran_mode2_handler,
};
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_WORK(&reset_ctl->reset_work, reset_ctl->async_reset);
/* Only mode2 is handled through reset control now */
reset_ctl->reset_handlers = &aldebaran_rst_handlers;
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;
}
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