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accel/ivpu: Add PM support

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- Implement cold and warm firmware boot flows
  - Add hang recovery support
  - Add runtime power management support

Co-developed-by: Krystian Pradzynski <krystian.pradzynski@linux.intel.com>
Signed-off-by: Krystian Pradzynski <krystian.pradzynski@linux.intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20230117092723.60441-8-jacek.lawrynowicz@linux.intel.com
This commit is contained in:
Jacek Lawrynowicz 2023-01-17 10:27:23 +01:00 committed by Daniel Vetter
parent cd7272215c
commit 852be13f3b
10 changed files with 451 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/accel/ivpu/Makefile
View File

@ -10,6 +10,7 @@ intel_vpu-y := \
ivpu_job.o \
ivpu_jsm_msg.o \
ivpu_mmu.o \
ivpu_mmu_context.o
ivpu_mmu_context.o \
ivpu_pm.o
obj-$(CONFIG_DRM_ACCEL_IVPU) += intel_vpu.o

28
drivers/accel/ivpu/ivpu_drv.c
View File

@ -24,6 +24,7 @@
#include "ivpu_jsm_msg.h"
#include "ivpu_mmu.h"
#include "ivpu_mmu_context.h"
#include "ivpu_pm.h"
#ifndef DRIVER_VERSION_STR
#define DRIVER_VERSION_STR __stringify(DRM_IVPU_DRIVER_MAJOR) "." \
@ -462,6 +463,10 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
if (!vdev->ipc)
return -ENOMEM;
vdev->pm = drmm_kzalloc(&vdev->drm, sizeof(*vdev->pm), GFP_KERNEL);
if (!vdev->pm)
return -ENOMEM;
vdev->hw->ops = &ivpu_hw_mtl_ops;
vdev->platform = IVPU_PLATFORM_INVALID;
vdev->context_xa_limit.min = IVPU_GLOBAL_CONTEXT_MMU_SSID + 1;
@ -521,6 +526,12 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
goto err_fw_fini;
}
ret = ivpu_pm_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize PM: %d\n", ret);
goto err_ipc_fini;
}
ret = ivpu_job_done_thread_init(vdev);
if (ret) {
ivpu_err(vdev, "Failed to initialize job done thread: %d\n", ret);
@ -539,6 +550,8 @@ static int ivpu_dev_init(struct ivpu_device *vdev)
goto err_job_done_thread_fini;
}
ivpu_pm_enable(vdev);
return 0;
err_job_done_thread_fini:
@ -559,6 +572,7 @@ err_xa_destroy:
static void ivpu_dev_fini(struct ivpu_device *vdev)
{
ivpu_pm_disable(vdev);
ivpu_shutdown(vdev);
ivpu_job_done_thread_fini(vdev);
ivpu_ipc_fini(vdev);
@ -611,11 +625,25 @@ static void ivpu_remove(struct pci_dev *pdev)
ivpu_dev_fini(vdev);
}
static const struct dev_pm_ops ivpu_drv_pci_pm = {
SET_SYSTEM_SLEEP_PM_OPS(ivpu_pm_suspend_cb, ivpu_pm_resume_cb)
SET_RUNTIME_PM_OPS(ivpu_pm_runtime_suspend_cb, ivpu_pm_runtime_resume_cb, NULL)
};
static const struct pci_error_handlers ivpu_drv_pci_err = {
.reset_prepare = ivpu_pm_reset_prepare_cb,
.reset_done = ivpu_pm_reset_done_cb,
};
static struct pci_driver ivpu_pci_driver = {
.name = KBUILD_MODNAME,
.id_table = ivpu_pci_ids,
.probe = ivpu_probe,
.remove = ivpu_remove,
.driver = {
.pm = &ivpu_drv_pci_pm,
},
.err_handler = &ivpu_drv_pci_err,
};
module_pci_driver(ivpu_pci_driver);

2
drivers/accel/ivpu/ivpu_drv.h
View File

@ -76,6 +76,7 @@ struct ivpu_hw_info;
struct ivpu_mmu_info;
struct ivpu_fw_info;
struct ivpu_ipc_info;
struct ivpu_pm_info;
struct ivpu_device {
struct drm_device drm;
@ -89,6 +90,7 @@ struct ivpu_device {
struct ivpu_mmu_info *mmu;
struct ivpu_fw_info *fw;
struct ivpu_ipc_info *ipc;
struct ivpu_pm_info *pm;
struct ivpu_mmu_context gctx;
struct xarray context_xa;

4
drivers/accel/ivpu/ivpu_fw.c
View File

@ -14,6 +14,7 @@
#include "ivpu_gem.h"
#include "ivpu_hw.h"
#include "ivpu_ipc.h"
#include "ivpu_pm.h"
#define FW_GLOBAL_MEM_START (2ull * SZ_1G)
#define FW_GLOBAL_MEM_END (3ull * SZ_1G)
@ -361,9 +362,12 @@ void ivpu_fw_boot_params_setup(struct ivpu_device *vdev, struct vpu_boot_params
/* In case of warm boot we only have to reset the entrypoint addr */
if (!ivpu_fw_is_cold_boot(vdev)) {
boot_params->save_restore_ret_address = 0;
vdev->pm->is_warmboot = true;
return;
}
vdev->pm->is_warmboot = false;
boot_params->magic = VPU_BOOT_PARAMS_MAGIC;
boot_params->vpu_id = to_pci_dev(vdev->drm.dev)->bus->number;
boot_params->frequency = ivpu_hw_reg_pll_freq_get(vdev);

12
drivers/accel/ivpu/ivpu_hw_mtl.c
View File

@ -10,6 +10,7 @@
#include "ivpu_hw.h"
#include "ivpu_ipc.h"
#include "ivpu_mmu.h"
#include "ivpu_pm.h"
#define TILE_FUSE_ENABLE_BOTH 0x0
#define TILE_FUSE_ENABLE_UPPER 0x1
@ -921,6 +922,8 @@ static void ivpu_hw_mtl_irq_disable(struct ivpu_device *vdev)
static void ivpu_hw_mtl_irq_wdt_nce_handler(struct ivpu_device *vdev)
{
ivpu_err_ratelimited(vdev, "WDT NCE irq\n");
ivpu_pm_schedule_recovery(vdev);
}
static void ivpu_hw_mtl_irq_wdt_mss_handler(struct ivpu_device *vdev)
@ -928,11 +931,14 @@ static void ivpu_hw_mtl_irq_wdt_mss_handler(struct ivpu_device *vdev)
ivpu_err_ratelimited(vdev, "WDT MSS irq\n");
ivpu_hw_wdt_disable(vdev);
ivpu_pm_schedule_recovery(vdev);
}
static void ivpu_hw_mtl_irq_noc_firewall_handler(struct ivpu_device *vdev)
{
ivpu_err_ratelimited(vdev, "NOC Firewall irq\n");
ivpu_pm_schedule_recovery(vdev);
}
/* Handler for IRQs from VPU core (irqV) */
@ -970,6 +976,7 @@ static u32 ivpu_hw_mtl_irqv_handler(struct ivpu_device *vdev, int irq)
static u32 ivpu_hw_mtl_irqb_handler(struct ivpu_device *vdev, int irq)
{
u32 status = REGB_RD32(MTL_BUTTRESS_INTERRUPT_STAT) & BUTTRESS_IRQ_MASK;
bool schedule_recovery = false;
if (status == 0)
return 0;
@ -983,6 +990,7 @@ static u32 ivpu_hw_mtl_irqb_handler(struct ivpu_device *vdev, int irq)
if (REG_TEST_FLD(MTL_BUTTRESS_INTERRUPT_STAT, ATS_ERR, status)) {
ivpu_err(vdev, "ATS_ERR irq 0x%016llx", REGB_RD64(MTL_BUTTRESS_ATS_ERR_LOG_0));
REGB_WR32(MTL_BUTTRESS_ATS_ERR_CLEAR, 0x1);
schedule_recovery = true;
}
if (REG_TEST_FLD(MTL_BUTTRESS_INTERRUPT_STAT, UFI_ERR, status)) {
@ -993,6 +1001,7 @@ static u32 ivpu_hw_mtl_irqb_handler(struct ivpu_device *vdev, int irq)
REG_GET_FLD(MTL_BUTTRESS_UFI_ERR_LOG, AXI_ID, ufi_log),
REG_GET_FLD(MTL_BUTTRESS_UFI_ERR_LOG, CQ_ID, ufi_log));
REGB_WR32(MTL_BUTTRESS_UFI_ERR_CLEAR, 0x1);
schedule_recovery = true;
}
/*
@ -1005,6 +1014,9 @@ static u32 ivpu_hw_mtl_irqb_handler(struct ivpu_device *vdev, int irq)
/* Re-enable global interrupt */
REGB_WR32(MTL_BUTTRESS_GLOBAL_INT_MASK, 0x0);
if (schedule_recovery)
ivpu_pm_schedule_recovery(vdev);
return status;
}

20
drivers/accel/ivpu/ivpu_ipc.c
View File

@ -14,6 +14,7 @@
#include "ivpu_hw_reg_io.h"
#include "ivpu_ipc.h"
#include "ivpu_jsm_msg.h"
#include "ivpu_pm.h"
#define IPC_MAX_RX_MSG 128
#define IS_KTHREAD() (get_current()->flags & PF_KTHREAD)
@ -294,18 +295,27 @@ int ivpu_ipc_send_receive(struct ivpu_device *vdev, struct vpu_jsm_msg *req,
{
struct vpu_jsm_msg hb_req = { .type = VPU_JSM_MSG_QUERY_ENGINE_HB };
struct vpu_jsm_msg hb_resp;
int ret;
int ret, hb_ret;
ret = ivpu_rpm_get(vdev);
if (ret < 0)
return ret;
ret = ivpu_ipc_send_receive_internal(vdev, req, expected_resp_type, resp,
channel, timeout_ms);
if (ret != -ETIMEDOUT)
return ret;
goto rpm_put;
ret = ivpu_ipc_send_receive_internal(vdev, &hb_req, VPU_JSM_MSG_QUERY_ENGINE_HB_DONE,
&hb_resp, VPU_IPC_CHAN_ASYNC_CMD, vdev->timeout.jsm);
if (ret == -ETIMEDOUT)
hb_ret = ivpu_ipc_send_receive_internal(vdev, &hb_req, VPU_JSM_MSG_QUERY_ENGINE_HB_DONE,
&hb_resp, VPU_IPC_CHAN_ASYNC_CMD,
vdev->timeout.jsm);
if (hb_ret == -ETIMEDOUT) {
ivpu_hw_diagnose_failure(vdev);
ivpu_pm_schedule_recovery(vdev);
}
rpm_put:
ivpu_rpm_put(vdev);
return ret;
}

14
drivers/accel/ivpu/ivpu_job.c
View File

@ -17,6 +17,7 @@
#include "ivpu_ipc.h"
#include "ivpu_job.h"
#include "ivpu_jsm_msg.h"
#include "ivpu_pm.h"
#define CMD_BUF_IDX 0
#define JOB_ID_JOB_MASK GENMASK(7, 0)
@ -270,6 +271,9 @@ static void job_release(struct kref *ref)
ivpu_dbg(vdev, KREF, "Job released: id %u\n", job->job_id);
kfree(job);
/* Allow the VPU to get suspended, must be called after ivpu_file_priv_put() */
ivpu_rpm_put(vdev);
}
static void job_put(struct ivpu_job *job)
@ -286,11 +290,16 @@ ivpu_create_job(struct ivpu_file_priv *file_priv, u32 engine_idx, u32 bo_count)
struct ivpu_device *vdev = file_priv->vdev;
struct ivpu_job *job;
size_t buf_size;
int ret;
ret = ivpu_rpm_get(vdev);
if (ret < 0)
return NULL;
buf_size = sizeof(*job) + bo_count * sizeof(struct ivpu_bo *);
job = kzalloc(buf_size, GFP_KERNEL);
if (!job)
return NULL;
goto err_rpm_put;
kref_init(&job->ref);
@ -311,6 +320,8 @@ ivpu_create_job(struct ivpu_file_priv *file_priv, u32 engine_idx, u32 bo_count)
err_free_job:
kfree(job);
err_rpm_put:
ivpu_rpm_put(vdev);
return NULL;
}
@ -565,6 +576,7 @@ static int ivpu_job_done_thread(void *arg)
if (jobs_submitted && !xa_empty(&vdev->submitted_jobs_xa)) {
ivpu_err(vdev, "TDR detected, timeout %d ms", timeout);
ivpu_hw_diagnose_failure(vdev);
ivpu_pm_schedule_recovery(vdev);
}
}
}

9
drivers/accel/ivpu/ivpu_mmu.c
View File

@ -11,6 +11,7 @@
#include "ivpu_hw_reg_io.h"
#include "ivpu_mmu.h"
#include "ivpu_mmu_context.h"
#include "ivpu_pm.h"
#define IVPU_MMU_IDR0_REF 0x080f3e0f
#define IVPU_MMU_IDR0_REF_SIMICS 0x080f3e1f
@ -814,6 +815,7 @@ static u32 *ivpu_mmu_get_event(struct ivpu_device *vdev)
void ivpu_mmu_irq_evtq_handler(struct ivpu_device *vdev)
{
bool schedule_recovery = false;
u32 *event;
u32 ssid;
@ -823,9 +825,14 @@ void ivpu_mmu_irq_evtq_handler(struct ivpu_device *vdev)
ivpu_mmu_dump_event(vdev, event);
ssid = FIELD_GET(IVPU_MMU_EVT_SSID_MASK, event[0]);
if (ssid != IVPU_GLOBAL_CONTEXT_MMU_SSID)
if (ssid == IVPU_GLOBAL_CONTEXT_MMU_SSID)
schedule_recovery = true;
else
ivpu_mmu_user_context_mark_invalid(vdev, ssid);
}
if (schedule_recovery)
ivpu_pm_schedule_recovery(vdev);
}
void ivpu_mmu_irq_gerr_handler(struct ivpu_device *vdev)

329
drivers/accel/ivpu/ivpu_pm.c Normal file
View File

@ -0,0 +1,329 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2020-2023 Intel Corporation
*/
#include <linux/highmem.h>
#include <linux/moduleparam.h>
#include <linux/pci.h>
#include <linux/pm_runtime.h>
#include <linux/reboot.h>
#include "vpu_boot_api.h"
#include "ivpu_drv.h"
#include "ivpu_hw.h"
#include "ivpu_fw.h"
#include "ivpu_ipc.h"
#include "ivpu_job.h"
#include "ivpu_mmu.h"
#include "ivpu_pm.h"
static bool ivpu_disable_recovery;
module_param_named_unsafe(disable_recovery, ivpu_disable_recovery, bool, 0644);
MODULE_PARM_DESC(disable_recovery, "Disables recovery when VPU hang is detected");
#define PM_RESCHEDULE_LIMIT 5
static void ivpu_pm_prepare_cold_boot(struct ivpu_device *vdev)
{
struct ivpu_fw_info *fw = vdev->fw;
ivpu_cmdq_reset_all_contexts(vdev);
ivpu_ipc_reset(vdev);
ivpu_fw_load(vdev);
fw->entry_point = fw->cold_boot_entry_point;
}
static void ivpu_pm_prepare_warm_boot(struct ivpu_device *vdev)
{
struct ivpu_fw_info *fw = vdev->fw;
struct vpu_boot_params *bp = fw->mem->kvaddr;
if (!bp->save_restore_ret_address) {
ivpu_pm_prepare_cold_boot(vdev);
return;
}
ivpu_dbg(vdev, FW_BOOT, "Save/restore entry point %llx", bp->save_restore_ret_address);
fw->entry_point = bp->save_restore_ret_address;
}
static int ivpu_suspend(struct ivpu_device *vdev)
{
int ret;
ret = ivpu_shutdown(vdev);
if (ret) {
ivpu_err(vdev, "Failed to shutdown VPU: %d\n", ret);
return ret;
}
return ret;
}
static int ivpu_resume(struct ivpu_device *vdev)
{
int ret;
retry:
ret = ivpu_hw_power_up(vdev);
if (ret) {
ivpu_err(vdev, "Failed to power up HW: %d\n", ret);
return ret;
}
ret = ivpu_mmu_enable(vdev);
if (ret) {
ivpu_err(vdev, "Failed to resume MMU: %d\n", ret);
ivpu_hw_power_down(vdev);
return ret;
}
ret = ivpu_boot(vdev);
if (ret) {
ivpu_mmu_disable(vdev);
ivpu_hw_power_down(vdev);
if (!ivpu_fw_is_cold_boot(vdev)) {
ivpu_warn(vdev, "Failed to resume the FW: %d. Retrying cold boot..\n", ret);
ivpu_pm_prepare_cold_boot(vdev);
goto retry;
} else {
ivpu_err(vdev, "Failed to resume the FW: %d\n", ret);
}
}
return ret;
}
static void ivpu_pm_recovery_work(struct work_struct *work)
{
struct ivpu_pm_info *pm = container_of(work, struct ivpu_pm_info, recovery_work);
struct ivpu_device *vdev = pm->vdev;
char *evt[2] = {"IVPU_PM_EVENT=IVPU_RECOVER", NULL};
int ret;
ret = pci_reset_function(to_pci_dev(vdev->drm.dev));
if (ret)
ivpu_err(vdev, "Failed to reset VPU: %d\n", ret);
kobject_uevent_env(&vdev->drm.dev->kobj, KOBJ_CHANGE, evt);
}
void ivpu_pm_schedule_recovery(struct ivpu_device *vdev)
{
struct ivpu_pm_info *pm = vdev->pm;
if (ivpu_disable_recovery) {
ivpu_err(vdev, "Recovery not available when disable_recovery param is set\n");
return;
}
if (ivpu_is_fpga(vdev)) {
ivpu_err(vdev, "Recovery not available on FPGA\n");
return;
}
/* Schedule recovery if it's not in progress */
if (atomic_cmpxchg(&pm->in_reset, 0, 1) == 0) {
ivpu_hw_irq_disable(vdev);
queue_work(system_long_wq, &pm->recovery_work);
}
}
int ivpu_pm_suspend_cb(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct ivpu_device *vdev = to_ivpu_device(drm);
int ret;
ivpu_dbg(vdev, PM, "Suspend..\n");
ret = ivpu_suspend(vdev);
if (ret && vdev->pm->suspend_reschedule_counter) {
ivpu_dbg(vdev, PM, "Failed to enter idle, rescheduling suspend, retries left %d\n",
vdev->pm->suspend_reschedule_counter);
pm_schedule_suspend(dev, vdev->timeout.reschedule_suspend);
vdev->pm->suspend_reschedule_counter--;
return -EBUSY;
} else if (!vdev->pm->suspend_reschedule_counter) {
ivpu_warn(vdev, "Failed to enter idle, force suspend\n");
ivpu_pm_prepare_cold_boot(vdev);
} else {
ivpu_pm_prepare_warm_boot(vdev);
}
vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT;
pci_save_state(to_pci_dev(dev));
pci_set_power_state(to_pci_dev(dev), PCI_D3hot);
ivpu_dbg(vdev, PM, "Suspend done.\n");
return ret;
}
int ivpu_pm_resume_cb(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct ivpu_device *vdev = to_ivpu_device(drm);
int ret;
ivpu_dbg(vdev, PM, "Resume..\n");
pci_set_power_state(to_pci_dev(dev), PCI_D0);
pci_restore_state(to_pci_dev(dev));
ret = ivpu_resume(vdev);
if (ret)
ivpu_err(vdev, "Failed to resume: %d\n", ret);
ivpu_dbg(vdev, PM, "Resume done.\n");
return ret;
}
int ivpu_pm_runtime_suspend_cb(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct ivpu_device *vdev = to_ivpu_device(drm);
int ret;
ivpu_dbg(vdev, PM, "Runtime suspend..\n");
if (!ivpu_hw_is_idle(vdev) && vdev->pm->suspend_reschedule_counter) {
ivpu_dbg(vdev, PM, "Failed to enter idle, rescheduling suspend, retries left %d\n",
vdev->pm->suspend_reschedule_counter);
pm_schedule_suspend(dev, vdev->timeout.reschedule_suspend);
vdev->pm->suspend_reschedule_counter--;
return -EAGAIN;
}
ret = ivpu_suspend(vdev);
if (ret)
ivpu_err(vdev, "Failed to set suspend VPU: %d\n", ret);
if (!vdev->pm->suspend_reschedule_counter) {
ivpu_warn(vdev, "VPU failed to enter idle, force suspended.\n");
ivpu_pm_prepare_cold_boot(vdev);
} else {
ivpu_pm_prepare_warm_boot(vdev);
}
vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT;
ivpu_dbg(vdev, PM, "Runtime suspend done.\n");
return 0;
}
int ivpu_pm_runtime_resume_cb(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
struct ivpu_device *vdev = to_ivpu_device(drm);
int ret;
ivpu_dbg(vdev, PM, "Runtime resume..\n");
ret = ivpu_resume(vdev);
if (ret)
ivpu_err(vdev, "Failed to set RESUME state: %d\n", ret);
ivpu_dbg(vdev, PM, "Runtime resume done.\n");
return ret;
}
int ivpu_rpm_get(struct ivpu_device *vdev)
{
int ret;
ivpu_dbg(vdev, RPM, "rpm_get count %d\n", atomic_read(&vdev->drm.dev->power.usage_count));
ret = pm_runtime_resume_and_get(vdev->drm.dev);
if (!drm_WARN_ON(&vdev->drm, ret < 0))
vdev->pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT;
return ret;
}
void ivpu_rpm_put(struct ivpu_device *vdev)
{
ivpu_dbg(vdev, RPM, "rpm_put count %d\n", atomic_read(&vdev->drm.dev->power.usage_count));
pm_runtime_mark_last_busy(vdev->drm.dev);
pm_runtime_put_autosuspend(vdev->drm.dev);
}
void ivpu_pm_reset_prepare_cb(struct pci_dev *pdev)
{
struct ivpu_device *vdev = pci_get_drvdata(pdev);
pm_runtime_get_sync(vdev->drm.dev);
ivpu_dbg(vdev, PM, "Pre-reset..\n");
atomic_set(&vdev->pm->in_reset, 1);
ivpu_shutdown(vdev);
ivpu_pm_prepare_cold_boot(vdev);
ivpu_jobs_abort_all(vdev);
ivpu_dbg(vdev, PM, "Pre-reset done.\n");
}
void ivpu_pm_reset_done_cb(struct pci_dev *pdev)
{
struct ivpu_device *vdev = pci_get_drvdata(pdev);
int ret;
ivpu_dbg(vdev, PM, "Post-reset..\n");
ret = ivpu_resume(vdev);
if (ret)
ivpu_err(vdev, "Failed to set RESUME state: %d\n", ret);
atomic_set(&vdev->pm->in_reset, 0);
ivpu_dbg(vdev, PM, "Post-reset done.\n");
pm_runtime_put_autosuspend(vdev->drm.dev);
}
int ivpu_pm_init(struct ivpu_device *vdev)
{
struct device *dev = vdev->drm.dev;
struct ivpu_pm_info *pm = vdev->pm;
pm->vdev = vdev;
pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT;
atomic_set(&pm->in_reset, 0);
INIT_WORK(&pm->recovery_work, ivpu_pm_recovery_work);
pm_runtime_use_autosuspend(dev);
if (ivpu_disable_recovery)
pm_runtime_set_autosuspend_delay(dev, -1);
else if (ivpu_is_silicon(vdev))
pm_runtime_set_autosuspend_delay(dev, 100);
else
pm_runtime_set_autosuspend_delay(dev, 60000);
return 0;
}
void ivpu_pm_enable(struct ivpu_device *vdev)
{
struct device *dev = vdev->drm.dev;
pm_runtime_set_active(dev);
pm_runtime_allow(dev);
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
ivpu_dbg(vdev, RPM, "Enable RPM count %d\n", atomic_read(&dev->power.usage_count));
}
void ivpu_pm_disable(struct ivpu_device *vdev)
{
struct device *dev = vdev->drm.dev;
ivpu_dbg(vdev, RPM, "Disable RPM count %d\n", atomic_read(&dev->power.usage_count));
pm_runtime_get_noresume(vdev->drm.dev);
pm_runtime_forbid(vdev->drm.dev);
}

38
drivers/accel/ivpu/ivpu_pm.h Normal file
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@ -0,0 +1,38 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2020-2023 Intel Corporation
*/
#ifndef __IVPU_PM_H__
#define __IVPU_PM_H__
#include <linux/types.h>
struct ivpu_device;
struct ivpu_pm_info {
struct ivpu_device *vdev;
struct work_struct recovery_work;
atomic_t in_reset;
bool is_warmboot;
u32 suspend_reschedule_counter;
};
int ivpu_pm_init(struct ivpu_device *vdev);
void ivpu_pm_enable(struct ivpu_device *vdev);
void ivpu_pm_disable(struct ivpu_device *vdev);
int ivpu_pm_suspend_cb(struct device *dev);
int ivpu_pm_resume_cb(struct device *dev);
int ivpu_pm_runtime_suspend_cb(struct device *dev);
int ivpu_pm_runtime_resume_cb(struct device *dev);
void ivpu_pm_reset_prepare_cb(struct pci_dev *pdev);
void ivpu_pm_reset_done_cb(struct pci_dev *pdev);
int __must_check ivpu_rpm_get(struct ivpu_device *vdev);
void ivpu_rpm_put(struct ivpu_device *vdev);
void ivpu_pm_schedule_recovery(struct ivpu_device *vdev);
#endif /* __IVPU_PM_H__ */