[AMD Official Use Only - General]
Will do.
Thanks,
Victor
-----Original Message-----
From: Grodzovsky, Andrey <Andrey.Grodzovsky@xxxxxxx>
Sent: Tuesday, July 26, 2022 5:06 AM
To: Zhao, Victor <Victor.Zhao@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Deng, Emily <Emily.Deng@xxxxxxx>; Koenig, Christian <Christian.Koenig@xxxxxxx>
Subject: Re: [PATCH 1/5] drm/amdgpu: add mode2 reset for sienna_cichlid
On 2022-07-22 03:33, Victor Zhao wrote:
> To meet the requirement for multi container usecase which needs a
> quicker reset and not causing VRAM lost, adding the Mode2 reset
> handler for sienna_cichlid. Adding a AMDGPU_SKIP_MODE2_RESET flag so
> driver can fallback to default reset method when mode2 reset failed
> and retry.
>
> - add mode2 reset handler for sienna_cichlid
Seems to me ASIC specific changes should be in a seperate patch
> - introduce AMDGPU_SKIP_MODE2_RESET flag
> - let mode2 reset fallback to default reset method if failed
>
> Signed-off-by: Victor Zhao <Victor.Zhao@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/Makefile | 2 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 +-
> drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c | 13 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h | 1 +
> drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 1 +
> drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c | 1 +
> drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c | 1 +
> drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c | 297 ++++++++++++++++++
> drivers/gpu/drm/amd/amdgpu/sienna_cichlid.h | 32 ++
> .../pm/swsmu/inc/pmfw_if/smu_v11_0_7_ppsmc.h | 4 +-
> drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h | 3 +-
> .../amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 54 ++++
> 15 files changed, 414 insertions(+), 5 deletions(-)
> create mode 100644 drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c
> create mode 100644 drivers/gpu/drm/amd/amdgpu/sienna_cichlid.h
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile
> b/drivers/gpu/drm/amd/amdgpu/Makefile
> index c7d0cd15b5ef..7030ac2d7d2c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/Makefile
> +++ b/drivers/gpu/drm/amd/amdgpu/Makefile
> @@ -75,7 +75,7 @@ amdgpu-y += \
> vi.o mxgpu_vi.o nbio_v6_1.o soc15.o emu_soc.o mxgpu_ai.o nbio_v7_0.o vega10_reg_init.o \
> vega20_reg_init.o nbio_v7_4.o nbio_v2_3.o nv.o arct_reg_init.o mxgpu_nv.o \
> nbio_v7_2.o hdp_v4_0.o hdp_v5_0.o aldebaran_reg_init.o aldebaran.o soc21.o \
> - nbio_v4_3.o hdp_v6_0.o nbio_v7_7.o hdp_v5_2.o lsdma_v6_0.o
> + sienna_cichlid.o nbio_v4_3.o hdp_v6_0.o nbio_v7_7.o hdp_v5_2.o
> +lsdma_v6_0.o
>
> # add DF block
> amdgpu-y += \
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
> index 5e53a5293935..091415a4abf0 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
> @@ -135,6 +135,7 @@ static void amdgpu_amdkfd_reset_work(struct work_struct *work)
> reset_context.method = AMD_RESET_METHOD_NONE;
> reset_context.reset_req_dev = adev;
> clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
> + clear_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context.flags);
>
> amdgpu_device_gpu_recover(adev, NULL, &reset_context);
> }
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index b79ee4ffb879..5498fda8617f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -5146,6 +5146,7 @@ int amdgpu_device_gpu_recover(struct
> amdgpu_device *adev,
>
> reset_context->job = job;
> reset_context->hive = hive;
> +
> /*
> * Build list of devices to reset.
> * In case we are in XGMI hive mode, resort the device list @@
> -5265,8 +5266,11 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
> amdgpu_ras_resume(adev);
> } else {
> r = amdgpu_do_asic_reset(device_list_handle, reset_context);
> - if (r && r == -EAGAIN)
> + if (r && r == -EAGAIN) {
> + set_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context->flags);
> + adev->asic_reset_res = 0;
See my question bellow related to this set
> goto retry;
> + }
> }
>
> skip_hw_reset:
> @@ -5694,6 +5698,7 @@ pci_ers_result_t amdgpu_pci_slot_reset(struct pci_dev *pdev)
> reset_context.reset_req_dev = adev;
> set_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
> set_bit(AMDGPU_SKIP_HW_RESET, &reset_context.flags);
> + set_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context.flags);
>
> adev->no_hw_access = true;
> r = amdgpu_device_pre_asic_reset(adev, &reset_context); diff --git
> a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
> index 10fdd12cf853..9844d99075e9 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
> @@ -71,6 +71,7 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct drm_sched_job *s_job)
> reset_context.method = AMD_RESET_METHOD_NONE;
> reset_context.reset_req_dev = adev;
> clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
> + clear_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context.flags);
>
> r = amdgpu_device_gpu_recover(ring->adev, job, &reset_context);
> if (r)
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> index 4f321375015c..259ec860890a 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> @@ -1949,6 +1949,7 @@ static void amdgpu_ras_do_recovery(struct work_struct *work)
> reset_context.method = AMD_RESET_METHOD_NONE;
> reset_context.reset_req_dev = adev;
> clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
> + clear_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context.flags);
>
> amdgpu_device_gpu_recover(ras->adev, NULL, &reset_context);
> }
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
> index 32c86a0b145c..831fb222139c 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.c
> @@ -23,6 +23,7 @@
>
> #include "amdgpu_reset.h"
> #include "aldebaran.h"
> +#include "sienna_cichlid.h"
>
> int amdgpu_reset_add_handler(struct amdgpu_reset_control *reset_ctl,
> struct amdgpu_reset_handler *handler) @@ -40,6 +41,9 @@ int
> amdgpu_reset_init(struct amdgpu_device *adev)
> case IP_VERSION(13, 0, 2):
> ret = aldebaran_reset_init(adev);
> break;
> + case IP_VERSION(11, 0, 7):
> + ret = sienna_cichlid_reset_init(adev);
> + break;
> default:
> break;
> }
> @@ -55,6 +59,9 @@ int amdgpu_reset_fini(struct amdgpu_device *adev)
> case IP_VERSION(13, 0, 2):
> ret = aldebaran_reset_fini(adev);
> break;
> + case IP_VERSION(11, 0, 7):
> + ret = sienna_cichlid_reset_fini(adev);
> + break;
> default:
> break;
> }
> @@ -67,6 +74,9 @@ int amdgpu_reset_prepare_hwcontext(struct amdgpu_device *adev,
> {
> struct amdgpu_reset_handler *reset_handler = NULL;
>
> + if (test_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context->flags))
> + return -ENOSYS;
> +
> if (adev->reset_cntl && adev->reset_cntl->get_reset_handler)
> reset_handler = adev->reset_cntl->get_reset_handler(
> adev->reset_cntl, reset_context); @@ -83,6 +93,9 @@ int
> amdgpu_reset_perform_reset(struct amdgpu_device *adev,
> int ret;
> struct amdgpu_reset_handler *reset_handler = NULL;
>
> + if (test_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context->flags))
> + return -ENOSYS;
> +
> if (adev->reset_cntl)
> reset_handler = adev->reset_cntl->get_reset_handler(
> adev->reset_cntl, reset_context); diff --git
> a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
> index 9e55a5d7a825..cc4b2eeb24cf 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_reset.h
> @@ -30,6 +30,7 @@ enum AMDGPU_RESET_FLAGS {
>
> AMDGPU_NEED_FULL_RESET = 0,
> AMDGPU_SKIP_HW_RESET = 1,
> + AMDGPU_SKIP_MODE2_RESET = 2,
> };
>
> struct amdgpu_reset_context {
> diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
> b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
> index 12906ba74462..a2f04b249132 100644
> --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
> +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
> @@ -290,6 +290,7 @@ static void xgpu_ai_mailbox_flr_work(struct work_struct *work)
> reset_context.method = AMD_RESET_METHOD_NONE;
> reset_context.reset_req_dev = adev;
> clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
> + clear_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context.flags);
>
> amdgpu_device_gpu_recover(adev, NULL, &reset_context);
> }
> diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
> b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
> index e07757eea7ad..a977f0027928 100644
> --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
> @@ -317,6 +317,7 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
> reset_context.method = AMD_RESET_METHOD_NONE;
> reset_context.reset_req_dev = adev;
> clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
> + clear_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context.flags);
>
> amdgpu_device_gpu_recover(adev, NULL, &reset_context);
> }
> diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
> b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
> index 288c414babdf..fd14fa9b9cd7 100644
> --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
> @@ -529,6 +529,7 @@ static void xgpu_vi_mailbox_flr_work(struct work_struct *work)
> reset_context.method = AMD_RESET_METHOD_NONE;
> reset_context.reset_req_dev = adev;
> clear_bit(AMDGPU_NEED_FULL_RESET, &reset_context.flags);
> + clear_bit(AMDGPU_SKIP_MODE2_RESET, &reset_context.flags);
>
> amdgpu_device_gpu_recover(adev, NULL, &reset_context);
> }
> diff --git a/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c
> b/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c
> new file mode 100644
> index 000000000000..0512960bed23
> --- /dev/null
> +++ b/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.c
> @@ -0,0 +1,297 @@
> +/*
> + * 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 "sienna_cichlid.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 *
> +sienna_cichlid_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) {
> + list_for_each_entry(handler, &reset_ctl->reset_handlers,
> + handler_list) {
> + if (handler->reset_method == reset_context->method)
> + return handler;
> + }
> + } else {
> + list_for_each_entry(handler, &reset_ctl->reset_handlers,
> + handler_list) {
> + if (handler->reset_method == AMD_RESET_METHOD_MODE2 &&
> + adev->pm.fw_version >= 0x3a5500 &&
> + !amdgpu_sriov_vf(adev)) {
> + reset_context->method = AMD_RESET_METHOD_MODE2;
> + return handler;
> + }
> + }
> + }
> +
> + return NULL;
> +}
> +
> +static int sienna_cichlid_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
> +sienna_cichlid_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;
> +
> + if (!amdgpu_sriov_vf(adev))
> + r = sienna_cichlid_mode2_suspend_ip(adev);
> +
> + return r;
> +}
> +
> +static void sienna_cichlid_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 sienna_cichlid_mode2_reset(struct amdgpu_device *adev) {
> + /* disable BM */
> + pci_clear_master(adev->pdev);
> + adev->asic_reset_res = amdgpu_dpm_mode2_reset(adev);
Why do you need to set adev->asic_reset_res here and not just return back result ?
> + return adev->asic_reset_res;
> +}
> +
> +static int
> +sienna_cichlid_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;
> + int r;
> +
> + r = sienna_cichlid_mode2_reset(adev);
> + if (r) {
> + dev_err(adev->dev,
> + "ASIC reset failed with error, %d ", r);
> + }
> + return r;
> +}
> +
> +static int sienna_cichlid_mode2_restore_ip(struct amdgpu_device
> +*adev) {
> + int i, r;
> + struct psp_context *psp = &adev->psp;
> +
> + r = psp_rlc_autoload_start(psp);
> + if (r) {
> + dev_err(adev->dev, "Failed to start rlc autoload\n");
> + 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;
> + }
> +
> + for (i = 0; i < adev->num_ip_blocks; i++) {
> + if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_IH)
> + 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))
> + 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))
> + 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
> +sienna_cichlid_mode2_restore_hwcontext(struct amdgpu_reset_control *reset_ctl,
> + struct amdgpu_reset_context *reset_context) {
> + int r;
> + struct amdgpu_device *tmp_adev = (struct amdgpu_device
> +*)reset_ctl->handle;
> +
> + dev_info(tmp_adev->dev,
> + "GPU reset succeeded, trying to resume\n");
> + r = sienna_cichlid_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);
> +
> + 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:
> + if (r)
> + return -EAGAIN;
> + else
> + return r;
> +}
> +
> +static struct amdgpu_reset_handler sienna_cichlid_mode2_handler = {
> + .reset_method = AMD_RESET_METHOD_MODE2,
> + .prepare_env = NULL,
> + .prepare_hwcontext = sienna_cichlid_mode2_prepare_hwcontext,
> + .perform_reset = sienna_cichlid_mode2_perform_reset,
> + .restore_hwcontext = sienna_cichlid_mode2_restore_hwcontext,
> + .restore_env = NULL,
> + .do_reset = sienna_cichlid_mode2_reset,
> +};
> +
> +int sienna_cichlid_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 = sienna_cichlid_async_reset;
> + reset_ctl->active_reset = AMD_RESET_METHOD_NONE;
> + reset_ctl->get_reset_handler = sienna_cichlid_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, &sienna_cichlid_mode2_handler);
> +
> + adev->reset_cntl = reset_ctl;
> +
> + return 0;
> +}
> +
> +int sienna_cichlid_reset_fini(struct amdgpu_device *adev) {
> + kfree(adev->reset_cntl);
> + adev->reset_cntl = NULL;
> + return 0;
> +}
> diff --git a/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.h
> b/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.h
> new file mode 100644
> index 000000000000..5213b162dacd
> --- /dev/null
> +++ b/drivers/gpu/drm/amd/amdgpu/sienna_cichlid.h
> @@ -0,0 +1,32 @@
> +/*
> + * 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.
> + *
> + */
> +
> +#ifndef __SIENNA_CICHLID_H__
> +#define __SIENNA_CICHLID_H__
> +
> +#include "amdgpu.h"
> +
> +int sienna_cichlid_reset_init(struct amdgpu_device *adev); int
> +sienna_cichlid_reset_fini(struct amdgpu_device *adev);
> +
> +#endif
> diff --git
> a/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v11_0_7_ppsmc.h
> b/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v11_0_7_ppsmc.h
> index d2e10a724560..82cf9e563065 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v11_0_7_ppsmc.h
> +++ b/drivers/gpu/drm/amd/pm/swsmu/inc/pmfw_if/smu_v11_0_7_ppsmc.h
> @@ -137,7 +137,7 @@
> #define PPSMC_MSG_DisallowGpo 0x56
>
> #define PPSMC_MSG_Enable2ndUSB20Port 0x57
> -
> -#define PPSMC_Message_Count 0x58
> +#define PPSMC_MSG_DriverMode2Reset 0x5D
> +#define PPSMC_Message_Count 0x5E
>
> #endif
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h
> b/drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h
> index 19084a4fcb2b..28f6a1eb6945 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h
> +++ b/drivers/gpu/drm/amd/pm/swsmu/inc/smu_types.h
> @@ -235,7 +235,8 @@
> __SMU_DUMMY_MAP(UnforceGfxVid), \
> __SMU_DUMMY_MAP(HeavySBR), \
> __SMU_DUMMY_MAP(SetBadHBMPagesRetiredFlagsPerChannel), \
> - __SMU_DUMMY_MAP(EnableGfxImu),
> + __SMU_DUMMY_MAP(EnableGfxImu), \
> + __SMU_DUMMY_MAP(DriverMode2Reset),
>
> #undef __SMU_DUMMY_MAP
> #define __SMU_DUMMY_MAP(type) SMU_MSG_##type
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
> b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
> index fa520d79ef67..a73d241bb64f 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
> @@ -154,6 +154,7 @@ static struct cmn2asic_msg_mapping sienna_cichlid_message_map[SMU_MSG_MAX_COUNT]
> MSG_MAP(SetGpoFeaturePMask, PPSMC_MSG_SetGpoFeaturePMask, 0),
> MSG_MAP(DisallowGpo, PPSMC_MSG_DisallowGpo, 0),
> MSG_MAP(Enable2ndUSB20Port, PPSMC_MSG_Enable2ndUSB20Port, 0),
> + MSG_MAP(DriverMode2Reset, PPSMC_MSG_DriverMode2Reset, 0),
> };
>
> static struct cmn2asic_mapping sienna_cichlid_clk_map[SMU_CLK_COUNT]
> = { @@ -4254,6 +4255,57 @@ static int sienna_cichlid_stb_get_data_direct(struct smu_context *smu,
> return 0;
> }
>
> +static bool sienna_cichlid_is_mode2_reset_supported(struct
> +smu_context *smu) {
> + return true;
> +}
> +
> +static int sienna_cichlid_mode2_reset(struct smu_context *smu) {
> + u32 smu_version;
> + int ret = 0, index;
> + struct amdgpu_device *adev = smu->adev;
> + int timeout = 100;
> +
> + smu_cmn_get_smc_version(smu, NULL, &smu_version);
> +
> + index = smu_cmn_to_asic_specific_index(smu, CMN2ASIC_MAPPING_MSG,
> + SMU_MSG_DriverMode2Reset);
> +
> + mutex_lock(&smu->message_lock);
> +
> + ret = smu_cmn_send_msg_without_waiting(smu, (uint16_t)index,
> + SMU_RESET_MODE_2);
> +
> + ret = smu_cmn_wait_for_response(smu);
> + while (ret != 0 && timeout) {
> + ret = smu_cmn_wait_for_response(smu);
> + /* Wait a bit more time for getting ACK */
> + if (ret != 0) {
> + --timeout;
> + usleep_range(500, 1000);
> + continue;
> + } else {
> + break;
> + }
> + }
> +
> + if (!timeout) {
> + dev_err(adev->dev,
> + "failed to send mode2 message \tparam: 0x%08x response %#x\n",
> + SMU_RESET_MODE_2, ret);
> + goto out;
> + }
> +
> + dev_info(smu->adev->dev, "restore config space...\n");
> + /* Restore the config space saved during init */
> + amdgpu_device_load_pci_state(adev->pdev);
> +out:
> + mutex_unlock(&smu->message_lock);
> +
> + return ret;
> +}
> +
> static const struct pptable_funcs sienna_cichlid_ppt_funcs = {
> .get_allowed_feature_mask = sienna_cichlid_get_allowed_feature_mask,
> .set_default_dpm_table = sienna_cichlid_set_default_dpm_table,
> @@ -4348,6 +4400,8 @@ static const struct pptable_funcs sienna_cichlid_ppt_funcs = {
> .get_default_config_table_settings = sienna_cichlid_get_default_config_table_settings,
> .set_config_table = sienna_cichlid_set_config_table,
> .get_unique_id = sienna_cichlid_get_unique_id,
> + .mode2_reset_is_support = sienna_cichlid_is_mode2_reset_supported,
> + .mode2_reset = sienna_cichlid_mode2_reset,
> };
>
> void sienna_cichlid_set_ppt_funcs(struct smu_context *smu)
