diff options
author | Sarah Walker <sarah.walker@imgtec.com> | 2023-11-22 19:34:40 +0300 |
---|---|---|
committer | Maxime Ripard <mripard@kernel.org> | 2023-11-23 11:01:47 +0300 |
commit | cb56cd61086645e46cc54d1837de803b1c471df6 (patch) | |
tree | 7bdd4867f91de6ecc7ae8d27d2a34c8ffb338c1c /drivers/gpu/drm/imagination/pvr_params.h | |
parent | 6b17baabf6d306f85021b9a081dcd0a1a5c6f846 (diff) | |
download | linux-cb56cd61086645e46cc54d1837de803b1c471df6.tar.xz |
drm/imagination: Add firmware trace to debugfs
Firmware trace is exposed at /sys/debug/dri/<dev_nr>/pvr_fw/trace_0.
Trace is enabled via the group mask at
/sys/debug/dri/<dev_nr>/pvr_params/fw_trace_mask.
Changes since v8:
- Corrected license identifiers
Changes since v3:
- Use drm_dev_{enter,exit}
Co-developed-by: Matt Coster <matt.coster@imgtec.com>
Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Signed-off-by: Sarah Walker <sarah.walker@imgtec.com>
Signed-off-by: Donald Robson <donald.robson@imgtec.com>
Link: https://lore.kernel.org/r/009cf9fee347fa96c8a665dc368fc54a5ffceff0.1700668843.git.donald.robson@imgtec.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/imagination/pvr_params.h')
-rw-r--r-- | drivers/gpu/drm/imagination/pvr_params.h | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/drivers/gpu/drm/imagination/pvr_params.h b/drivers/gpu/drm/imagination/pvr_params.h new file mode 100644 index 000000000000..5807915b456b --- /dev/null +++ b/drivers/gpu/drm/imagination/pvr_params.h @@ -0,0 +1,72 @@ +/* SPDX-License-Identifier: GPL-2.0-only OR MIT */ +/* Copyright (c) 2023 Imagination Technologies Ltd. */ + +#ifndef PVR_PARAMS_H +#define PVR_PARAMS_H + +#include "pvr_rogue_fwif.h" + +#include <linux/cache.h> +#include <linux/compiler_attributes.h> + +/* + * This is the definitive list of types allowed in the definition of + * %PVR_DEVICE_PARAMS. + */ +#define PVR_PARAM_TYPE_X32_C u32 + +/* + * This macro defines all device-specific parameters; that is parameters which + * are set independently per device. + * + * The X-macro accepts the following arguments. Arguments marked with [debugfs] + * are ignored when debugfs is disabled; values used for these arguments may + * safely be gated behind CONFIG_DEBUG_FS. + * + * @type_: The definitive list of allowed values is PVR_PARAM_TYPE_*_C. + * @name_: Name of the parameter. This is used both as the field name in C and + * stringified as the parameter name. + * @value_: Initial/default value. + * @desc_: String literal used as help text to describe the usage of this + * parameter. + * @mode_: [debugfs] One of {RO,RW}. The access mode of the debugfs entry for + * this parameter. + * @update_: [debugfs] When debugfs support is enabled, parameters may be + * updated at runtime. When this happens, this function will be + * called to allow changes to propagate. The signature of this + * function is: + * + * void (*)(struct pvr_device *pvr_dev, T old_val, T new_val) + * + * Where T is the C type associated with @type_. + * + * If @mode_ does not allow write access, this function will never be + * called. In this case, or if no update callback is required, you + * should specify NULL for this argument. + */ +#define PVR_DEVICE_PARAMS \ + X(X32, fw_trace_mask, ROGUE_FWIF_LOG_TYPE_NONE, \ + "Enable FW trace for the specified groups. Specifying 0 disables " \ + "all FW tracing.", \ + RW, pvr_fw_trace_mask_update) + +struct pvr_device_params { +#define X(type_, name_, value_, desc_, ...) \ + PVR_PARAM_TYPE_##type_##_C name_; + PVR_DEVICE_PARAMS +#undef X +}; + +int pvr_device_params_init(struct pvr_device_params *params); + +#if defined(CONFIG_DEBUG_FS) +/* Forward declaration from "pvr_device.h". */ +struct pvr_device; + +/* Forward declaration from <linux/dcache.h>. */ +struct dentry; + +void pvr_params_debugfs_init(struct pvr_device *pvr_dev, struct dentry *dir); +#endif /* defined(CONFIG_DEBUG_FS) */ + +#endif /* PVR_PARAMS_H */ |