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| author | Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com> | 2023-07-27 02:26:49 +0300 |
|---|---|---|
| committer | Rodrigo Vivi <rodrigo.vivi@intel.com> | 2023-12-21 19:39:15 +0300 |
| commit | 4f027e304a6c7ae77150965d10b8a1edee0398a2 (patch) | |
| tree | c40006ee021a4eb24e18360375d720b5ce9170e5 /drivers/gpu/drm/xe/xe_gt.c | |
| parent | 063e09af6e1d9a4f26cdd0eb896c19526cb0afd3 (diff) | |
| download | linux-4f027e304a6c7ae77150965d10b8a1edee0398a2.tar.xz | |
drm/xe: Notify Userspace when gt reset fails
Send uevent in case of gt reset failure. This intimation can be used by
userspace monitoring tool to do the device level reset/reboot
when GT reset fails. udevadm can be used to monitor the uevents.
v2:
- Support only gt failure notification (Rodrigo)
v3
- Rectify the comments in header file.
v4
- Use pci kobj instead of drm kobj for notification.(Rodrigo)
- Cleanup (Badal)
v5
- Add tile id and gt id as additional info provided by uevent.
- Provide code documentation for the uevent. (Rodrigo)
Cc: Aravind Iddamsetty <aravind.iddamsetty@intel.com>
Cc: Tejas Upadhyay <tejas.upadhyay@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Badal Nilawar <badal.nilawar@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Diffstat (limited to 'drivers/gpu/drm/xe/xe_gt.c')
| -rw-r--r-- | drivers/gpu/drm/xe/xe_gt.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/xe/xe_gt.c b/drivers/gpu/drm/xe/xe_gt.c index bb7794cf2c1a..82b987404070 100644 --- a/drivers/gpu/drm/xe/xe_gt.c +++ b/drivers/gpu/drm/xe/xe_gt.c @@ -8,6 +8,7 @@ #include <linux/minmax.h> #include <drm/drm_managed.h> +#include <drm/xe_drm.h> #include "regs/xe_gt_regs.h" #include "xe_bb.h" @@ -499,6 +500,20 @@ static int do_gt_restart(struct xe_gt *gt) return 0; } +static void xe_uevent_gt_reset_failure(struct pci_dev *pdev, u8 tile_id, u8 gt_id) +{ + char *reset_event[4]; + + reset_event[0] = XE_RESET_FAILED_UEVENT "=NEEDS_RESET"; + reset_event[1] = kasprintf(GFP_KERNEL, "TILE_ID=%d", tile_id); + reset_event[2] = kasprintf(GFP_KERNEL, "GT_ID=%d", gt_id); + reset_event[3] = NULL; + kobject_uevent_env(&pdev->dev.kobj, KOBJ_CHANGE, reset_event); + + kfree(reset_event[1]); + kfree(reset_event[2]); +} + static int gt_reset(struct xe_gt *gt) { int err; @@ -549,6 +564,10 @@ err_msg: xe_device_mem_access_put(gt_to_xe(gt)); xe_gt_err(gt, "reset failed (%pe)\n", ERR_PTR(err)); + /* Notify userspace about gt reset failure */ + xe_uevent_gt_reset_failure(to_pci_dev(gt_to_xe(gt)->drm.dev), + gt_to_tile(gt)->id, gt->info.id); + return err; } |