/*
* 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 bool sienna_cichlid_is_mode2_default(struct amdgpu_reset_control *reset_ctl)
{
#if 0
struct amdgpu_device *adev = (struct amdgpu_device *)reset_ctl->handle;
if (amdgpu_ip_version(adev, MP1_HWIP, 0) == IP_VERSION(11, 0, 7) &&
adev->pm.fw_version >= 0x3a5500 && !amdgpu_sriov_vf(adev))
return true;
#endif
return amdgpu_reset_method == AMD_RESET_METHOD_MODE2;
}
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;
int i;
if (reset_context->method != AMD_RESET_METHOD_NONE) {
for_each_handler(i, handler, reset_ctl) {
if (handler->reset_method == reset_context->method)
return handler;
}
}
if (sienna_cichlid_is_mode2_default(reset_ctl)) {
for_each_handler(i, handler, reset_ctl) {
if (handler->reset_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 0;
}
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)) {
if (adev->gfxhub.funcs->mode2_save_regs)
adev->gfxhub.funcs->mode2_save_regs(adev);
if (adev->gfxhub.funcs->halt)
adev->gfxhub.funcs->halt(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;
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 sienna_cichlid_mode2_reset(struct amdgpu_device *adev)
{
/* disable BM */
pci_clear_master(adev->pdev);
return amdgpu_dpm_mode2_reset(adev);
}
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 */
if (adev->gfxhub.funcs->mode2_restore_regs)
adev->gfxhub.funcs->mode2_restore_regs(adev);
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;
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,
};
static struct amdgpu_reset_handler
*sienna_cichlid_rst_handlers[AMDGPU_RESET_MAX_HANDLERS] = {
&sienna_cichlid_mode2_handler,
};
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_WORK(&reset_ctl->reset_work, reset_ctl->async_reset);
/* Only mode2 is handled through reset control now */
reset_ctl->reset_handlers = &sienna_cichlid_rst_handlers;
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;
}
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