Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/imagination: Implement handling of context reset notification
The firmware will send the context reset notification message as
part of handling hardware recovery (HWR) events deecoding the message
and printing via drm_info(). This eliminates the "Unknown FWCCB command"
message that was previously printed.
Co-developed-by: Sarah Walker <sarah.walker@imgtec.com>
Signed-off-by: Sarah Walker <sarah.walker@imgtec.com>
Signed-off-by: Alexandru Dadu <alexandru.dadu@imgtec.com>
Reviewed-by: Matt Coster <matt.coster@imgtec.com>
Link: https://patch.msgid.link/20260323-b4-firmware-context-reset-notification-handling-v3-3-1a66049a9a65@imgtec.com
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
authored by
Alexandru Dadu
and committed by
Matt Coster
d994acc5
d2f83a6c
+136
+1
drivers/gpu/drm/imagination/Makefile
+1
drivers/gpu/drm/imagination/Makefile
+5
drivers/gpu/drm/imagination/pvr_ccb.c
+5
drivers/gpu/drm/imagination/pvr_ccb.c
···
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#include "pvr_ccb.h"
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#include "pvr_device.h"
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#include "pvr_drv.h"
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#include "pvr_dump.h"
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#include "pvr_free_list.h"
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#include "pvr_fw.h"
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#include "pvr_gem.h"
···
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* stats. It may be added in the future, but for now just
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* suppress the "unknown" warning when receiving this command.
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*/
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break;
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case ROGUE_FWIF_FWCCB_CMD_CONTEXT_RESET_NOTIFICATION:
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pvr_dump_context_reset_notification(pvr_dev,
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&cmd->cmd_data.cmd_context_reset_notification);
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break;
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default:
+113
drivers/gpu/drm/imagination/pvr_dump.c
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drivers/gpu/drm/imagination/pvr_dump.c
···
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// SPDX-License-Identifier: GPL-2.0 OR MIT
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/* Copyright (c) 2026 Imagination Technologies Ltd. */
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#include "pvr_device.h"
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#include "pvr_dump.h"
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#include "pvr_rogue_fwif.h"
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#include <drm/drm_print.h>
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#include <linux/types.h>
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static const char *
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get_reset_reason_desc(enum rogue_context_reset_reason reason)
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{
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switch (reason) {
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case ROGUE_CONTEXT_RESET_REASON_NONE:
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return "None";
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case ROGUE_CONTEXT_RESET_REASON_GUILTY_LOCKUP:
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return "Guilty lockup";
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case ROGUE_CONTEXT_RESET_REASON_INNOCENT_LOCKUP:
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return "Innocent lockup";
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case ROGUE_CONTEXT_RESET_REASON_GUILTY_OVERRUNING:
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return "Guilty overrunning";
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case ROGUE_CONTEXT_RESET_REASON_INNOCENT_OVERRUNING:
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return "Innocent overrunning";
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case ROGUE_CONTEXT_RESET_REASON_HARD_CONTEXT_SWITCH:
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return "Hard context switch";
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case ROGUE_CONTEXT_RESET_REASON_WGP_CHECKSUM:
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return "CDM Mission/safety checksum mismatch";
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case ROGUE_CONTEXT_RESET_REASON_TRP_CHECKSUM:
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return "TRP checksum mismatch";
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case ROGUE_CONTEXT_RESET_REASON_GPU_ECC_OK:
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return "GPU ECC error (corrected, OK)";
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case ROGUE_CONTEXT_RESET_REASON_GPU_ECC_HWR:
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return "GPU ECC error (uncorrected, HWR)";
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case ROGUE_CONTEXT_RESET_REASON_FW_ECC_OK:
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return "Firmware ECC error (corrected, OK)";
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case ROGUE_CONTEXT_RESET_REASON_FW_ECC_ERR:
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return "Firmware ECC error (uncorrected, ERR)";
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case ROGUE_CONTEXT_RESET_REASON_FW_WATCHDOG:
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return "Firmware watchdog";
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case ROGUE_CONTEXT_RESET_REASON_FW_PAGEFAULT:
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return "Firmware pagefault";
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case ROGUE_CONTEXT_RESET_REASON_FW_EXEC_ERR:
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return "Firmware execution error";
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case ROGUE_CONTEXT_RESET_REASON_HOST_WDG_FW_ERR:
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return "Host watchdog";
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case ROGUE_CONTEXT_GEOM_OOM_DISABLED:
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return "Geometry OOM disabled";
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default:
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return "Unknown";
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}
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}
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static const char *
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get_dm_name(u32 dm)
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{
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switch (dm) {
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case PVR_FWIF_DM_GP:
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return "General purpose";
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/* PVR_FWIF_DM_TDM has the same index, but is discriminated by a device feature */
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case PVR_FWIF_DM_2D:
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return "2D or TDM";
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case PVR_FWIF_DM_GEOM:
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return "Geometry";
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case PVR_FWIF_DM_FRAG:
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return "Fragment";
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case PVR_FWIF_DM_CDM:
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return "Compute";
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case PVR_FWIF_DM_RAY:
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return "Raytracing";
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case PVR_FWIF_DM_GEOM2:
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return "Geometry 2";
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case PVR_FWIF_DM_GEOM3:
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return "Geometry 3";
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case PVR_FWIF_DM_GEOM4:
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return "Geometry 4";
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default:
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return "Unknown";
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}
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}
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/**
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* pvr_dump_context_reset_notification() - Handle context reset notification from FW
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* @pvr_dev: Device pointer.
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* @data: Data provided by FW.
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*
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* This will decode the data structure provided by FW and print the results via drm_info().
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*/
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void
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pvr_dump_context_reset_notification(struct pvr_device *pvr_dev,
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struct rogue_fwif_fwccb_cmd_context_reset_data *data)
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{
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struct drm_device *drm_dev = from_pvr_device(pvr_dev);
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if (data->flags & ROGUE_FWIF_FWCCB_CMD_CONTEXT_RESET_FLAG_ALL_CTXS) {
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drm_info(drm_dev, "Received context reset notification for all contexts\n");
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} else {
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drm_info(drm_dev, "Received context reset notification on context %u\n",
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data->server_common_context_id);
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}
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drm_info(drm_dev, " Reset reason=%u (%s)\n", data->reset_reason,
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get_reset_reason_desc((enum rogue_context_reset_reason)data->reset_reason));
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drm_info(drm_dev, " Data Master=%u (%s)\n", data->dm, get_dm_name(data->dm));
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drm_info(drm_dev, " Job ref=%u\n", data->reset_job_ref);
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if (data->flags & ROGUE_FWIF_FWCCB_CMD_CONTEXT_RESET_FLAG_PF) {
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drm_info(drm_dev, " Page fault occurred, fault address=%llx\n",
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data->fault_address);
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}
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}
+17
drivers/gpu/drm/imagination/pvr_dump.h
+17
drivers/gpu/drm/imagination/pvr_dump.h
···
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/* SPDX-License-Identifier: GPL-2.0 OR MIT */
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/* Copyright (c) 2026 Imagination Technologies Ltd. */
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#ifndef PVR_DUMP_H
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#define PVR_DUMP_H
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/* Forward declaration from pvr_device.h. */
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struct pvr_device;
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/* Forward declaration from pvr_rogue_fwif.h. */
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struct rogue_fwif_fwccb_cmd_context_reset_data;
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void
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pvr_dump_context_reset_notification(struct pvr_device *pvr_dev,
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struct rogue_fwif_fwccb_cmd_context_reset_data *data);
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#endif /* PVR_DUMP_H */