This commit implements basic ioctl framework for PMC, including basic operations.
This commit also implements AMDGPU_PROFILER_OP_VERSION which report profiler version to the user space. Signed-off-by: Zhu Lingshan <[email protected]> --- drivers/gpu/drm/amd/amdgpu/Makefile | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 2 + drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.c | 44 ++++++++++++++++++++ drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.h | 33 +++++++++++++++ include/uapi/drm/amdgpu_drm.h | 36 ++++++++++++++++ 5 files changed, 116 insertions(+), 1 deletion(-) create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.c create mode 100644 drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.h diff --git a/drivers/gpu/drm/amd/amdgpu/Makefile b/drivers/gpu/drm/amd/amdgpu/Makefile index 6fb0a913e33b..d7db69e9d6a0 100644 --- a/drivers/gpu/drm/amd/amdgpu/Makefile +++ b/drivers/gpu/drm/amd/amdgpu/Makefile @@ -72,7 +72,7 @@ amdgpu-y += amdgpu_device.o amdgpu_reg_access.o amdgpu_doorbell_mgr.o amdgpu_kms amdgpu_eeprom.o amdgpu_mca.o amdgpu_psp_ta.o amdgpu_lsdma.o amdgpu_lockdep.o \ amdgpu_ring_mux.o amdgpu_xcp.o amdgpu_seq64.o amdgpu_dev_coredump.o \ amdgpu_cper.o amdgpu_userq_fence.o amdgpu_eviction_fence.o amdgpu_ip.o \ - amdgpu_wb.o amdgpu_cwsr.o amdgpu_events.o + amdgpu_wb.o amdgpu_cwsr.o amdgpu_events.o amdgpu_profiler.o amdgpu-$(CONFIG_PROC_FS) += amdgpu_fdinfo.o diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c index 7c473f60bd28..a98c4a47e196 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c @@ -55,6 +55,7 @@ #include "amdgpu_cwsr.h" #include "amdgpu_userq_fence.h" #include "../amdxcp/amdgpu_xcp_drv.h" +#include "amdgpu_profiler.h" /* * KMS wrapper. @@ -3096,6 +3097,7 @@ const struct drm_ioctl_desc amdgpu_ioctls_kms[] = { DRM_IOCTL_DEF_DRV(AMDGPU_USERQ_WAIT, amdgpu_userq_wait_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(AMDGPU_GEM_LIST_HANDLES, amdgpu_gem_list_handles_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), DRM_IOCTL_DEF_DRV(AMDGPU_PROC_OPTIONS, amdgpu_proc_options_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), + DRM_IOCTL_DEF_DRV(AMDGPU_PROFILER, amdgpu_profiler_ioctl, DRM_AUTH|DRM_RENDER_ALLOW), }; static const struct drm_driver amdgpu_kms_driver = { diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.c new file mode 100644 index 000000000000..04902696adab --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.c @@ -0,0 +1,44 @@ +// SPDX-License-Identifier: MIT +/* + * Copyright 2026 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#include <linux/errno.h> +#include <drm/amdgpu_drm.h> +#include "amdgpu_profiler.h" + +int amdgpu_profiler_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) +{ + struct drm_amdgpu_profiler_args *args = data; + + switch (args->op) { + case AMDGPU_PROFILER_OP_VERSION: + args->version = AMDGPU_PROFILER_VERSION_NUM; + return 0; + case AMDGPU_PROFILER_OP_RESERVE: + return -EOPNOTSUPP; + case AMDGPU_PROFILER_OP_PMC: + return -EOPNOTSUPP; + default: + return -EINVAL; + } +} diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.h new file mode 100644 index 000000000000..c27b5f9b3ff0 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_profiler.h @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Copyright 2026 Advanced Micro Devices, Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + * + */ + +#ifndef __AMDGPU_PROFILER_H__ +#define __AMDGPU_PROFILER_H__ + +#include <drm/drm_device.h> +#include <drm/drm_file.h> + +int amdgpu_profiler_ioctl(struct drm_device *dev, void *data, struct drm_file *filp); + +#endif /* __AMDGPU_PROFILER_H__ */ diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h index 9222be9a6d2a..acc63804ba8c 100644 --- a/include/uapi/drm/amdgpu_drm.h +++ b/include/uapi/drm/amdgpu_drm.h @@ -60,6 +60,7 @@ extern "C" { #define DRM_AMDGPU_GEM_LIST_HANDLES 0x19 #define DRM_AMDGPU_PROC_OPTIONS 0x1A #define DRM_AMDGPU_CWSR 0x1B +#define DRM_AMDGPU_PROFILER 0x1C #define DRM_IOCTL_AMDGPU_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_CREATE, union drm_amdgpu_gem_create) #define DRM_IOCTL_AMDGPU_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_MMAP, union drm_amdgpu_gem_mmap) @@ -83,6 +84,7 @@ extern "C" { #define DRM_IOCTL_AMDGPU_GEM_LIST_HANDLES DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_GEM_LIST_HANDLES, struct drm_amdgpu_gem_list_handles) #define DRM_IOCTL_AMDGPU_PROC_OPTIONS DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_PROC_OPTIONS, struct drm_amdgpu_proc_options) #define DRM_IOCTL_AMDGPU_CWSR DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_CWSR, union drm_amdgpu_cwsr) +#define DRM_IOCTL_AMDGPU_PROFILER DRM_IOWR(DRM_COMMAND_BASE + DRM_AMDGPU_PROFILER, struct drm_amdgpu_profiler_args) /** * DOC: memory domains @@ -1809,6 +1811,40 @@ struct drm_amdgpu_proc_options { } kfd_sigbus_delay; }; +#define AMDGPU_PROFILER_VERSION_NUM 1 + +enum amdgpu_profiler_ops { + AMDGPU_PROFILER_OP_VERSION = 1, + AMDGPU_PROFILER_OP_RESERVE = 2, + AMDGPU_PROFILER_OP_PMC = 3, +}; + +enum amdgpu_profiler_reserve_ops { + /* release the device resertaion, only the reservation owner do this */ + AMDGPU_PROFILER_RELEASE = 0, + /* reserve the device profiler */ + AMDGPU_PROFILER_RESERVE = 1, + /* Clear the device profiler reservation, in case the reservation + * owner can no longer release the reservation(e.g., it crashes), + * This operation does not take the reseration nor touch profielr state + */ + AMDGPU_PROFILER_CLEAR_RESERVATION = 2, +}; + +struct drm_amdgpu_profiler_args { + /* enum amdgpu_profiler_ops */ + __u8 op; + __u8 pad[3]; + union { + /* AMDGPU_PROFILER_OP_RESERVE: enum amdgpu_profiler_reserve_ops */ + __u8 reserve; + /* AMDGPU_PROFILER_OP_PMC: 1 enable PMC, 0 disable PMC */ + __u8 perfcount_enable; + /* AMDGPU_PROFILER_OP_VERSION: AMDGPU_PROFILER_VERSION_NUM */ + __u32 version; + }; +}; + #if defined(__cplusplus) } #endif -- 2.55.0
