mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

accel/ivpu: Disable buttress on device removal 

Use pci_set_power_state() to disable buttress when device is removed.
This is workaround of hardware bug that hangs the system.

Additionally not disabling buttress prevents CPU enter deeper Pkg-C
states when the driver is unloaded or fail to probe.

Fixes: 35b137630f ("accel/ivpu: Introduce a new DRM driver for Intel VPU")
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323125504.2586442-6-stanislaw.gruszka@linux.intel.com
This commit is contained in:
Stanislaw Gruszka 2023-03-23 13:55:01 +01:00 committed by Jacek Lawrynowicz
parent a8fed6d1e0
commit 3d8b2727d8
3 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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

@ -569,6 +569,8 @@ err_mmu_gctx_fini:
ivpu_mmu_global_context_fini(vdev);
err_power_down:
ivpu_hw_power_down(vdev);
if (IVPU_WA(d3hot_after_power_off))
pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
err_xa_destroy:
xa_destroy(&vdev->submitted_jobs_xa);
xa_destroy(&vdev->context_xa);
@ -579,6 +581,8 @@ static void ivpu_dev_fini(struct ivpu_device *vdev)
{
ivpu_pm_disable(vdev);
ivpu_shutdown(vdev);
if (IVPU_WA(d3hot_after_power_off))
pci_set_power_state(to_pci_dev(vdev->drm.dev), PCI_D3hot);
ivpu_job_done_thread_fini(vdev);
ivpu_pm_cancel_recovery(vdev);

1
drivers/accel/ivpu/ivpu_drv.h
View File

@ -74,6 +74,7 @@
struct ivpu_wa_table {
bool punit_disabled;
bool clear_runtime_mem;
bool d3hot_after_power_off;
};
struct ivpu_hw_info;

1
drivers/accel/ivpu/ivpu_hw_mtl.c
View File

@ -101,6 +101,7 @@ static void ivpu_hw_wa_init(struct ivpu_device *vdev)
{
vdev->wa.punit_disabled = ivpu_is_fpga(vdev);
vdev->wa.clear_runtime_mem = false;
vdev->wa.d3hot_after_power_off = true;
}
static void ivpu_hw_timeouts_init(struct ivpu_device *vdev)