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path: root/drivers/accel/ivpu/ivpu_pm.c
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Diffstat (limited to 'drivers/accel/ivpu/ivpu_pm.c')
-rw-r--r--drivers/accel/ivpu/ivpu_pm.c154
1 files changed, 111 insertions, 43 deletions
diff --git a/drivers/accel/ivpu/ivpu_pm.c b/drivers/accel/ivpu/ivpu_pm.c
index e9b16cbc2..a15d30d09 100644
--- a/drivers/accel/ivpu/ivpu_pm.c
+++ b/drivers/accel/ivpu/ivpu_pm.c
@@ -13,8 +13,10 @@
#include "ivpu_drv.h"
#include "ivpu_hw.h"
#include "ivpu_fw.h"
+#include "ivpu_fw_log.h"
#include "ivpu_ipc.h"
#include "ivpu_job.h"
+#include "ivpu_jsm_msg.h"
#include "ivpu_mmu.h"
#include "ivpu_pm.h"
@@ -22,6 +24,10 @@ 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");
+static unsigned long ivpu_tdr_timeout_ms;
+module_param_named(tdr_timeout_ms, ivpu_tdr_timeout_ms, ulong, 0644);
+MODULE_PARM_DESC(tdr_timeout_ms, "Timeout for device hang detection, in milliseconds, 0 - default");
+
#define PM_RESCHEDULE_LIMIT 5
static void ivpu_pm_prepare_cold_boot(struct ivpu_device *vdev)
@@ -52,11 +58,14 @@ static int ivpu_suspend(struct ivpu_device *vdev)
{
int ret;
+ /* Save PCI state before powering down as it sometimes gets corrupted if NPU hangs */
+ pci_save_state(to_pci_dev(vdev->drm.dev));
+
ret = ivpu_shutdown(vdev);
- if (ret) {
+ if (ret)
ivpu_err(vdev, "Failed to shutdown VPU: %d\n", ret);
- return ret;
- }
+
+ pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
return ret;
}
@@ -66,30 +75,38 @@ static int ivpu_resume(struct ivpu_device *vdev)
int ret;
retry:
+ pci_restore_state(to_pci_dev(vdev->drm.dev));
+ pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D0);
+
ret = ivpu_hw_power_up(vdev);
if (ret) {
ivpu_err(vdev, "Failed to power up HW: %d\n", ret);
- return ret;
+ goto err_power_down;
}
ret = ivpu_mmu_enable(vdev);
if (ret) {
ivpu_err(vdev, "Failed to resume MMU: %d\n", ret);
- ivpu_hw_power_down(vdev);
- return ret;
+ goto err_power_down;
}
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);
- }
+ if (ret)
+ goto err_mmu_disable;
+
+ return 0;
+
+err_mmu_disable:
+ ivpu_mmu_disable(vdev);
+err_power_down:
+ ivpu_hw_power_down(vdev);
+ pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
+
+ if (!ivpu_fw_is_cold_boot(vdev)) {
+ ivpu_pm_prepare_cold_boot(vdev);
+ goto retry;
+ } else {
+ ivpu_err(vdev, "Failed to resume the FW: %d\n", ret);
}
return ret;
@@ -102,22 +119,37 @@ static void ivpu_pm_recovery_work(struct work_struct *work)
char *evt[2] = {"IVPU_PM_EVENT=IVPU_RECOVER", NULL};
int ret;
-retry:
- ret = pci_try_reset_function(to_pci_dev(vdev->drm.dev));
- if (ret == -EAGAIN && !drm_dev_is_unplugged(&vdev->drm)) {
- cond_resched();
- goto retry;
- }
+ ivpu_err(vdev, "Recovering the VPU (reset #%d)\n", atomic_read(&vdev->pm->reset_counter));
+
+ ret = pm_runtime_resume_and_get(vdev->drm.dev);
+ if (ret)
+ ivpu_err(vdev, "Failed to resume VPU: %d\n", ret);
+
+ ivpu_fw_log_dump(vdev);
+
+ atomic_inc(&vdev->pm->reset_counter);
+ atomic_set(&vdev->pm->reset_pending, 1);
+ down_write(&vdev->pm->reset_lock);
+
+ ivpu_suspend(vdev);
+ ivpu_pm_prepare_cold_boot(vdev);
+ ivpu_jobs_abort_all(vdev);
+
+ ret = ivpu_resume(vdev);
+ if (ret)
+ ivpu_err(vdev, "Failed to resume NPU: %d\n", ret);
- if (ret && ret != -EAGAIN)
- ivpu_err(vdev, "Failed to reset VPU: %d\n", ret);
+ up_write(&vdev->pm->reset_lock);
+ atomic_set(&vdev->pm->reset_pending, 0);
kobject_uevent_env(&vdev->drm.dev->kobj, KOBJ_CHANGE, evt);
+ pm_runtime_mark_last_busy(vdev->drm.dev);
+ pm_runtime_put_autosuspend(vdev->drm.dev);
}
-void ivpu_pm_schedule_recovery(struct ivpu_device *vdev)
+void ivpu_pm_trigger_recovery(struct ivpu_device *vdev, const char *reason)
{
- struct ivpu_pm_info *pm = vdev->pm;
+ ivpu_err(vdev, "Recovery triggered by %s\n", reason);
if (ivpu_disable_recovery) {
ivpu_err(vdev, "Recovery not available when disable_recovery param is set\n");
@@ -129,13 +161,35 @@ void ivpu_pm_schedule_recovery(struct ivpu_device *vdev)
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);
+ /* Trigger recovery if it's not in progress */
+ if (atomic_cmpxchg(&vdev->pm->reset_pending, 0, 1) == 0) {
+ ivpu_hw_diagnose_failure(vdev);
+ ivpu_hw_irq_disable(vdev); /* Disable IRQ early to protect from IRQ storm */
+ queue_work(system_long_wq, &vdev->pm->recovery_work);
}
}
+static void ivpu_job_timeout_work(struct work_struct *work)
+{
+ struct ivpu_pm_info *pm = container_of(work, struct ivpu_pm_info, job_timeout_work.work);
+ struct ivpu_device *vdev = pm->vdev;
+
+ ivpu_pm_trigger_recovery(vdev, "TDR");
+}
+
+void ivpu_start_job_timeout_detection(struct ivpu_device *vdev)
+{
+ unsigned long timeout_ms = ivpu_tdr_timeout_ms ? ivpu_tdr_timeout_ms : vdev->timeout.tdr;
+
+ /* No-op if already queued */
+ queue_delayed_work(system_wq, &vdev->pm->job_timeout_work, msecs_to_jiffies(timeout_ms));
+}
+
+void ivpu_stop_job_timeout_detection(struct ivpu_device *vdev)
+{
+ cancel_delayed_work_sync(&vdev->pm->job_timeout_work);
+}
+
int ivpu_pm_suspend_cb(struct device *dev)
{
struct drm_device *drm = dev_get_drvdata(dev);
@@ -153,12 +207,11 @@ int ivpu_pm_suspend_cb(struct device *dev)
}
}
+ ivpu_jsm_pwr_d0i3_enter(vdev);
+
ivpu_suspend(vdev);
ivpu_pm_prepare_warm_boot(vdev);
- 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 0;
@@ -172,9 +225,6 @@ int ivpu_pm_resume_cb(struct device *dev)
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);
@@ -188,8 +238,12 @@ 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);
+ bool hw_is_idle = true;
int ret;
+ drm_WARN_ON(&vdev->drm, !xa_empty(&vdev->submitted_jobs_xa));
+ drm_WARN_ON(&vdev->drm, work_pending(&vdev->pm->recovery_work));
+
ivpu_dbg(vdev, PM, "Runtime suspend..\n");
if (!ivpu_hw_is_idle(vdev) && vdev->pm->suspend_reschedule_counter) {
@@ -200,12 +254,18 @@ int ivpu_pm_runtime_suspend_cb(struct device *dev)
return -EAGAIN;
}
+ if (!vdev->pm->suspend_reschedule_counter)
+ hw_is_idle = false;
+ else if (ivpu_jsm_pwr_d0i3_enter(vdev))
+ hw_is_idle = false;
+
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");
+ if (!hw_is_idle) {
+ ivpu_err(vdev, "VPU failed to enter idle, force suspended.\n");
+ ivpu_fw_log_dump(vdev);
ivpu_pm_prepare_cold_boot(vdev);
} else {
ivpu_pm_prepare_warm_boot(vdev);
@@ -266,11 +326,12 @@ 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_inc(&vdev->pm->reset_counter);
- atomic_set(&vdev->pm->in_reset, 1);
+ atomic_set(&vdev->pm->reset_pending, 1);
+
+ pm_runtime_get_sync(vdev->drm.dev);
+ down_write(&vdev->pm->reset_lock);
ivpu_prepare_for_reset(vdev);
ivpu_hw_reset(vdev);
ivpu_pm_prepare_cold_boot(vdev);
@@ -287,9 +348,11 @@ void ivpu_pm_reset_done_cb(struct pci_dev *pdev)
ret = ivpu_resume(vdev);
if (ret)
ivpu_err(vdev, "Failed to set RESUME state: %d\n", ret);
- atomic_set(&vdev->pm->in_reset, 0);
+ up_write(&vdev->pm->reset_lock);
+ atomic_set(&vdev->pm->reset_pending, 0);
ivpu_dbg(vdev, PM, "Post-reset done.\n");
+ pm_runtime_mark_last_busy(vdev->drm.dev);
pm_runtime_put_autosuspend(vdev->drm.dev);
}
@@ -302,8 +365,12 @@ void ivpu_pm_init(struct ivpu_device *vdev)
pm->vdev = vdev;
pm->suspend_reschedule_counter = PM_RESCHEDULE_LIMIT;
- atomic_set(&pm->in_reset, 0);
+ init_rwsem(&pm->reset_lock);
+ atomic_set(&pm->reset_pending, 0);
+ atomic_set(&pm->reset_counter, 0);
+
INIT_WORK(&pm->recovery_work, ivpu_pm_recovery_work);
+ INIT_DELAYED_WORK(&pm->job_timeout_work, ivpu_job_timeout_work);
if (ivpu_disable_recovery)
delay = -1;
@@ -318,6 +385,7 @@ void ivpu_pm_init(struct ivpu_device *vdev)
void ivpu_pm_cancel_recovery(struct ivpu_device *vdev)
{
+ drm_WARN_ON(&vdev->drm, delayed_work_pending(&vdev->pm->job_timeout_work));
cancel_work_sync(&vdev->pm->recovery_work);
}