/* * Copyright 2014 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.
*/
/* For kfd_ioctl_set_memory_policy_args.default_policy and alternate_policy */ #define KFD_IOC_CACHE_POLICY_COHERENT 0 #define KFD_IOC_CACHE_POLICY_NONCOHERENT 1
/* Misc. per process flags */ #define KFD_PROC_FLAG_MFMA_HIGH_PRECISION (1 << 0)
struct kfd_ioctl_set_memory_policy_args {
__u64 alternate_aperture_base; /* to KFD */
__u64 alternate_aperture_size; /* to KFD */
__u32 gpu_id; /* to KFD */
__u32 default_policy; /* to KFD */
__u32 alternate_policy; /* to KFD */
__u32 misc_process_flag; /* to KFD */
};
/* * All counters are monotonic. They are used for profiling of compute jobs. * The profiling is done by userspace. * * In case of GPU reset, the counter should not be affected.
*/
struct kfd_ioctl_get_clock_counters_args {
__u64 gpu_clock_counter; /* from KFD */
__u64 cpu_clock_counter; /* from KFD */
__u64 system_clock_counter; /* from KFD */
__u64 system_clock_freq; /* from KFD */
__u32 gpu_id; /* to KFD */
__u32 pad;
};
struct kfd_process_device_apertures {
__u64 lds_base; /* from KFD */
__u64 lds_limit; /* from KFD */
__u64 scratch_base; /* from KFD */
__u64 scratch_limit; /* from KFD */
__u64 gpuvm_base; /* from KFD */
__u64 gpuvm_limit; /* from KFD */
__u32 gpu_id; /* from KFD */
__u32 pad;
};
/* * AMDKFD_IOC_GET_PROCESS_APERTURES is deprecated. Use * AMDKFD_IOC_GET_PROCESS_APERTURES_NEW instead, which supports an * unlimited number of GPUs.
*/ #define NUM_OF_SUPPORTED_GPUS 7 struct kfd_ioctl_get_process_apertures_args { struct kfd_process_device_apertures
process_apertures[NUM_OF_SUPPORTED_GPUS];/* from KFD */
/* from KFD, should be in the range [1 - NUM_OF_SUPPORTED_GPUS] */
__u32 num_of_nodes;
__u32 pad;
};
struct kfd_ioctl_get_process_apertures_new_args { /* User allocated. Pointer to struct kfd_process_device_apertures * filled in by Kernel
*/
__u64 kfd_process_device_apertures_ptr; /* to KFD - indicates amount of memory present in * kfd_process_device_apertures_ptr * from KFD - Number of entries filled by KFD.
*/
__u32 num_of_nodes;
__u32 pad;
};
struct kfd_ioctl_dbg_address_watch_args {
__u64 content_ptr; /* a pointer to the actual content */
__u32 gpu_id; /* to KFD */
__u32 buf_size_in_bytes; /*including gpu_id and buf_size */
};
struct kfd_ioctl_dbg_wave_control_args {
__u64 content_ptr; /* a pointer to the actual content */
__u32 gpu_id; /* to KFD */
__u32 buf_size_in_bytes; /*including gpu_id and buf_size */
};
struct kfd_ioctl_create_event_args {
__u64 event_page_offset; /* from KFD */
__u32 event_trigger_data; /* from KFD - signal events only */
__u32 event_type; /* to KFD */
__u32 auto_reset; /* to KFD */
__u32 node_id; /* to KFD - only valid for certain
event types */
__u32 event_id; /* from KFD */
__u32 event_slot_index; /* from KFD */
};
/* hsa signal event data */ struct kfd_hsa_signal_event_data {
__u64 last_event_age; /* to and from KFD */
};
/* Event data */ struct kfd_event_data { union { /* From KFD */ struct kfd_hsa_memory_exception_data memory_exception_data; struct kfd_hsa_hw_exception_data hw_exception_data; /* To and From KFD */ struct kfd_hsa_signal_event_data signal_event_data;
};
__u64 kfd_event_data_ext; /* pointer to an extension structure
for future exception types */
__u32 event_id; /* to KFD */
__u32 pad;
};
struct kfd_ioctl_wait_events_args {
__u64 events_ptr; /* pointed to struct
kfd_event_data array, to KFD */
__u32 num_events; /* to KFD */
__u32 wait_for_all; /* to KFD */
__u32 timeout; /* to KFD */
__u32 wait_result; /* from KFD */
};
struct kfd_ioctl_set_scratch_backing_va_args {
__u64 va_addr; /* to KFD */
__u32 gpu_id; /* to KFD */
__u32 pad;
};
struct kfd_ioctl_get_tile_config_args { /* to KFD: pointer to tile array */
__u64 tile_config_ptr; /* to KFD: pointer to macro tile array */
__u64 macro_tile_config_ptr; /* to KFD: array size allocated by user mode * from KFD: array size filled by kernel
*/
__u32 num_tile_configs; /* to KFD: array size allocated by user mode * from KFD: array size filled by kernel
*/
__u32 num_macro_tile_configs;
__u32 gpu_id; /* to KFD */
__u32 gb_addr_config; /* from KFD */
__u32 num_banks; /* from KFD */
__u32 num_ranks; /* from KFD */ /* struct size can be extended later if needed * without breaking ABI compatibility
*/
};
struct kfd_ioctl_set_trap_handler_args {
__u64 tba_addr; /* to KFD */
__u64 tma_addr; /* to KFD */
__u32 gpu_id; /* to KFD */
__u32 pad;
};
struct kfd_ioctl_acquire_vm_args {
__u32 drm_fd; /* to KFD */
__u32 gpu_id; /* to KFD */
};
/* Allocate memory for later SVM (shared virtual memory) mapping. * * @va_addr: virtual address of the memory to be allocated * all later mappings on all GPUs will use this address * @size: size in bytes * @handle: buffer handle returned to user mode, used to refer to * this allocation for mapping, unmapping and freeing * @mmap_offset: for CPU-mapping the allocation by mmapping a render node * for userptrs this is overloaded to specify the CPU address * @gpu_id: device identifier * @flags: memory type and attributes. See KFD_IOC_ALLOC_MEM_FLAGS above
*/ struct kfd_ioctl_alloc_memory_of_gpu_args {
__u64 va_addr; /* to KFD */
__u64 size; /* to KFD */
__u64 handle; /* from KFD */
__u64 mmap_offset; /* to KFD (userptr), from KFD (mmap offset) */
__u32 gpu_id; /* to KFD */
__u32 flags;
};
/* Free memory allocated with kfd_ioctl_alloc_memory_of_gpu * * @handle: memory handle returned by alloc
*/ struct kfd_ioctl_free_memory_of_gpu_args {
__u64 handle; /* to KFD */
};
/* Map memory to one or more GPUs * * @handle: memory handle returned by alloc * @device_ids_array_ptr: array of gpu_ids (__u32 per device) * @n_devices: number of devices in the array * @n_success: number of devices mapped successfully * * @n_success returns information to the caller how many devices from * the start of the array have mapped the buffer successfully. It can * be passed into a subsequent retry call to skip those devices. For * the first call the caller should initialize it to 0. * * If the ioctl completes with return code 0 (success), n_success == * n_devices.
*/ struct kfd_ioctl_map_memory_to_gpu_args {
__u64 handle; /* to KFD */
__u64 device_ids_array_ptr; /* to KFD */
__u32 n_devices; /* to KFD */
__u32 n_success; /* to/from KFD */
};
/* Unmap memory from one or more GPUs * * same arguments as for mapping
*/ struct kfd_ioctl_unmap_memory_from_gpu_args {
__u64 handle; /* to KFD */
__u64 device_ids_array_ptr; /* to KFD */
__u32 n_devices; /* to KFD */
__u32 n_success; /* to/from KFD */
};
/* Allocate GWS for specific queue * * @queue_id: queue's id that GWS is allocated for * @num_gws: how many GWS to allocate * @first_gws: index of the first GWS allocated. * only support contiguous GWS allocation
*/ struct kfd_ioctl_alloc_queue_gws_args {
__u32 queue_id; /* to KFD */
__u32 num_gws; /* to KFD */
__u32 first_gws; /* from KFD */
__u32 pad;
};
struct kfd_ioctl_get_dmabuf_info_args {
__u64 size; /* from KFD */
__u64 metadata_ptr; /* to KFD */
__u32 metadata_size; /* to KFD (space allocated by user) * from KFD (actual metadata size)
*/
__u32 gpu_id; /* from KFD */
__u32 flags; /* from KFD (KFD_IOC_ALLOC_MEM_FLAGS) */
__u32 dmabuf_fd; /* to KFD */
};
struct kfd_ioctl_import_dmabuf_args {
__u64 va_addr; /* to KFD */
__u64 handle; /* from KFD */
__u32 gpu_id; /* to KFD */
__u32 dmabuf_fd; /* to KFD */
};
struct kfd_ioctl_export_dmabuf_args {
__u64 handle; /* to KFD */
__u32 flags; /* to KFD */
__u32 dmabuf_fd; /* from KFD */
};
/* * max event number, as a flag bit to get events from all processes, * this requires super user permission, otherwise will not be able to * receive event from any process. Without this flag to receive events * from same process.
*/
KFD_SMI_EVENT_ALL_PROCESS = 64
};
/* The reason of the page migration event */ enum KFD_MIGRATE_TRIGGERS {
KFD_MIGRATE_TRIGGER_PREFETCH, /* Prefetch to GPU VRAM or system memory */
KFD_MIGRATE_TRIGGER_PAGEFAULT_GPU, /* GPU page fault recover */
KFD_MIGRATE_TRIGGER_PAGEFAULT_CPU, /* CPU page fault recover */
KFD_MIGRATE_TRIGGER_TTM_EVICTION /* TTM eviction */
};
struct kfd_ioctl_smi_events_args {
__u32 gpuid; /* to KFD */
__u32 anon_fd; /* from KFD */
};
/* * SVM event tracing via SMI system management interface * * Open event file descriptor * use ioctl AMDKFD_IOC_SMI_EVENTS, pass in gpuid and return a anonymous file * descriptor to receive SMI events. * If calling with sudo permission, then file descriptor can be used to receive * SVM events from all processes, otherwise, to only receive SVM events of same * process. * * To enable the SVM event * Write event file descriptor with KFD_SMI_EVENT_MASK_FROM_INDEX(event) bitmap * mask to start record the event to the kfifo, use bitmap mask combination * for multiple events. New event mask will overwrite the previous event mask. * KFD_SMI_EVENT_MASK_FROM_INDEX(KFD_SMI_EVENT_ALL_PROCESS) bit requires sudo * permisson to receive SVM events from all process. * * To receive the event * Application can poll file descriptor to wait for the events, then read event * from the file into a buffer. Each event is one line string message, starting * with the event id, then the event specific information. * * To decode event information * The following event format string macro can be used with sscanf to decode * the specific event information. * event triggers: the reason to generate the event, defined as enum for unmap, * eviction and migrate events. * node, from, to, prefetch_loc, preferred_loc: GPU ID, or 0 for system memory. * addr: user mode address, in pages * size: in pages * pid: the process ID to generate the event * ns: timestamp in nanosecond-resolution, starts at system boot time but * stops during suspend * migrate_update: GPU page fault is recovered by 'M' for migrate, 'U' for update * rw: 'W' for write page fault, 'R' for read page fault * rescheduled: 'R' if the queue restore failed and rescheduled to try again * error_code: migrate failure error code, 0 if no error
*/ #define KFD_EVENT_FMT_UPDATE_GPU_RESET(reset_seq_num, reset_cause)\ "%x %s\n", (reset_seq_num), (reset_cause)
/************************************************************************************************** * CRIU IOCTLs (Checkpoint Restore In Userspace) * * When checkpointing a process, the userspace application will perform: * 1. PROCESS_INFO op to determine current process information. This pauses execution and evicts * all the queues. * 2. CHECKPOINT op to checkpoint process contents (BOs, queues, events, svm-ranges) * 3. UNPAUSE op to un-evict all the queues * * When restoring a process, the CRIU userspace application will perform: * * 1. RESTORE op to restore process contents * 2. RESUME op to start the process * * Note: Queues are forced into an evicted state after a successful PROCESS_INFO. User * application needs to perform an UNPAUSE operation after calling PROCESS_INFO.
*/
/** * kfd_ioctl_criu_args - Arguments perform CRIU operation * @devices: [in/out] User pointer to memory location for devices information. * This is an array of type kfd_criu_device_bucket. * @bos: [in/out] User pointer to memory location for BOs information * This is an array of type kfd_criu_bo_bucket. * @priv_data: [in/out] User pointer to memory location for private data * @priv_data_size: [in/out] Size of priv_data in bytes * @num_devices: [in/out] Number of GPUs used by process. Size of @devices array. * @num_bos [in/out] Number of BOs used by process. Size of @bos array. * @num_objects: [in/out] Number of objects used by process. Objects are opaque to * user application. * @pid: [in/out] PID of the process being checkpointed * @op [in] Type of operation (kfd_criu_op) * * Return: 0 on success, -errno on failure
*/ struct kfd_ioctl_criu_args {
__u64 devices; /* Used during ops: CHECKPOINT, RESTORE */
__u64 bos; /* Used during ops: CHECKPOINT, RESTORE */
__u64 priv_data; /* Used during ops: CHECKPOINT, RESTORE */
__u64 priv_data_size; /* Used during ops: PROCESS_INFO, RESTORE */
__u32 num_devices; /* Used during ops: PROCESS_INFO, RESTORE */
__u32 num_bos; /* Used during ops: PROCESS_INFO, RESTORE */
__u32 num_objects; /* Used during ops: PROCESS_INFO, RESTORE */
__u32 pid; /* Used during ops: PROCESS_INFO, RESUME */
__u32 op;
};
/* Guarantee host access to memory */ #define KFD_IOCTL_SVM_FLAG_HOST_ACCESS 0x00000001 /* Fine grained coherency between all devices with access */ #define KFD_IOCTL_SVM_FLAG_COHERENT 0x00000002 /* Use any GPU in same hive as preferred device */ #define KFD_IOCTL_SVM_FLAG_HIVE_LOCAL 0x00000004 /* GPUs only read, allows replication */ #define KFD_IOCTL_SVM_FLAG_GPU_RO 0x00000008 /* Allow execution on GPU */ #define KFD_IOCTL_SVM_FLAG_GPU_EXEC 0x00000010 /* GPUs mostly read, may allow similar optimizations as RO, but writes fault */ #define KFD_IOCTL_SVM_FLAG_GPU_READ_MOSTLY 0x00000020 /* Keep GPU memory mapping always valid as if XNACK is disable */ #define KFD_IOCTL_SVM_FLAG_GPU_ALWAYS_MAPPED 0x00000040 /* Fine grained coherency between all devices using device-scope atomics */ #define KFD_IOCTL_SVM_FLAG_EXT_COHERENT 0x00000080
/** * kfd_ioctl_svm_op - SVM ioctl operations * * @KFD_IOCTL_SVM_OP_SET_ATTR: Modify one or more attributes * @KFD_IOCTL_SVM_OP_GET_ATTR: Query one or more attributes
*/ enum kfd_ioctl_svm_op {
KFD_IOCTL_SVM_OP_SET_ATTR,
KFD_IOCTL_SVM_OP_GET_ATTR
};
/** kfd_ioctl_svm_location - Enum for preferred and prefetch locations * * GPU IDs are used to specify GPUs as preferred and prefetch locations. * Below definitions are used for system memory or for leaving the preferred * location unspecified.
*/ enum kfd_ioctl_svm_location {
KFD_IOCTL_SVM_LOCATION_SYSMEM = 0,
KFD_IOCTL_SVM_LOCATION_UNDEFINED = 0xffffffff
};
/** * kfd_ioctl_svm_attr_type - SVM attribute types * * @KFD_IOCTL_SVM_ATTR_PREFERRED_LOC: gpuid of the preferred location, 0 for * system memory * @KFD_IOCTL_SVM_ATTR_PREFETCH_LOC: gpuid of the prefetch location, 0 for * system memory. Setting this triggers an * immediate prefetch (migration). * @KFD_IOCTL_SVM_ATTR_ACCESS: * @KFD_IOCTL_SVM_ATTR_ACCESS_IN_PLACE: * @KFD_IOCTL_SVM_ATTR_NO_ACCESS: specify memory access for the gpuid given * by the attribute value * @KFD_IOCTL_SVM_ATTR_SET_FLAGS: bitmask of flags to set (see * KFD_IOCTL_SVM_FLAG_...) * @KFD_IOCTL_SVM_ATTR_CLR_FLAGS: bitmask of flags to clear * @KFD_IOCTL_SVM_ATTR_GRANULARITY: migration granularity * (log2 num pages)
*/ enum kfd_ioctl_svm_attr_type {
KFD_IOCTL_SVM_ATTR_PREFERRED_LOC,
KFD_IOCTL_SVM_ATTR_PREFETCH_LOC,
KFD_IOCTL_SVM_ATTR_ACCESS,
KFD_IOCTL_SVM_ATTR_ACCESS_IN_PLACE,
KFD_IOCTL_SVM_ATTR_NO_ACCESS,
KFD_IOCTL_SVM_ATTR_SET_FLAGS,
KFD_IOCTL_SVM_ATTR_CLR_FLAGS,
KFD_IOCTL_SVM_ATTR_GRANULARITY
};
/** * kfd_ioctl_svm_attribute - Attributes as pairs of type and value * * The meaning of the @value depends on the attribute type. * * @type: attribute type (see enum @kfd_ioctl_svm_attr_type) * @value: attribute value
*/ struct kfd_ioctl_svm_attribute {
__u32 type;
__u32 value;
};
/** * kfd_ioctl_svm_args - Arguments for SVM ioctl * * @op specifies the operation to perform (see enum * @kfd_ioctl_svm_op). @start_addr and @size are common for all * operations. * * A variable number of attributes can be given in @attrs. * @nattr specifies the number of attributes. New attributes can be * added in the future without breaking the ABI. If unknown attributes * are given, the function returns -EINVAL. * * @KFD_IOCTL_SVM_OP_SET_ATTR sets attributes for a virtual address * range. It may overlap existing virtual address ranges. If it does, * the existing ranges will be split such that the attribute changes * only apply to the specified address range. * * @KFD_IOCTL_SVM_OP_GET_ATTR returns the intersection of attributes * over all memory in the given range and returns the result as the * attribute value. If different pages have different preferred or * prefetch locations, 0xffffffff will be returned for * @KFD_IOCTL_SVM_ATTR_PREFERRED_LOC or * @KFD_IOCTL_SVM_ATTR_PREFETCH_LOC resepctively. For * @KFD_IOCTL_SVM_ATTR_SET_FLAGS, flags of all pages will be * aggregated by bitwise AND. That means, a flag will be set in the * output, if that flag is set for all pages in the range. For * @KFD_IOCTL_SVM_ATTR_CLR_FLAGS, flags of all pages will be * aggregated by bitwise NOR. That means, a flag will be set in the * output, if that flag is clear for all pages in the range. * The minimum migration granularity throughout the range will be * returned for @KFD_IOCTL_SVM_ATTR_GRANULARITY. * * Querying of accessibility attributes works by initializing the * attribute type to @KFD_IOCTL_SVM_ATTR_ACCESS and the value to the * GPUID being queried. Multiple attributes can be given to allow * querying multiple GPUIDs. The ioctl function overwrites the * attribute type to indicate the access for the specified GPU.
*/ struct kfd_ioctl_svm_args {
__u64 start_addr;
__u64 size;
__u32 op;
__u32 nattr; /* Variable length array of attributes */ struct kfd_ioctl_svm_attribute attrs[];
};
/** * kfd_ioctl_set_xnack_mode_args - Arguments for set_xnack_mode * * @xnack_enabled: [in/out] Whether to enable XNACK mode for this process * * @xnack_enabled indicates whether recoverable page faults should be * enabled for the current process. 0 means disabled, positive means * enabled, negative means leave unchanged. If enabled, virtual address * translations on GFXv9 and later AMD GPUs can return XNACK and retry * the access until a valid PTE is available. This is used to implement * device page faults. * * On output, @xnack_enabled returns the (new) current mode (0 or * positive). Therefore, a negative input value can be used to query * the current mode without changing it. * * The XNACK mode fundamentally changes the way SVM managed memory works * in the driver, with subtle effects on application performance and * functionality. * * Enabling XNACK mode requires shader programs to be compiled * differently. Furthermore, not all GPUs support changing the mode * per-process. Therefore changing the mode is only allowed while no * user mode queues exist in the process. This ensure that no shader * code is running that may be compiled for the wrong mode. And GPUs * that cannot change to the requested mode will prevent the XNACK * mode from occurring. All GPUs used by the process must be in the * same XNACK mode. * * GFXv8 or older GPUs do not support 48 bit virtual addresses or SVM. * Therefore those GPUs are not considered for the XNACK mode switch. * * Return: 0 on success, -errno on failure
*/ struct kfd_ioctl_set_xnack_mode_args {
__s32 xnack_enabled;
};
/** * kfd_ioctl_runtime_enable_args - Arguments for runtime enable * * Coordinates debug exception signalling and debug device enablement with runtime. * * @r_debug - pointer to user struct for sharing information between ROCr and the debuggger * @mode_mask - mask to set mode * KFD_RUNTIME_ENABLE_MODE_ENABLE_MASK - enable runtime for debugging, otherwise disable * KFD_RUNTIME_ENABLE_MODE_TTMP_SAVE_MASK - enable trap temporary setup (ignore on disable) * @capabilities_mask - mask to notify runtime on what KFD supports * * Return - 0 on SUCCESS. * - EBUSY if runtime enable call already pending. * - EEXIST if user queues already active prior to call. * If process is debug enabled, runtime enable will enable debug devices and * wait for debugger process to send runtime exception EC_PROCESS_RUNTIME * to unblock - see kfd_ioctl_dbg_trap_args. *
*/ struct kfd_ioctl_runtime_enable_args {
__u64 r_debug;
__u32 mode_mask;
__u32 capabilities_mask;
};
/* * Debug operations * * For specifics on usage and return values, see documentation per operation * below. Otherwise, generic error returns apply: * - ESRCH if the process to debug does not exist. * * - EINVAL (with KFD_IOC_DBG_TRAP_ENABLE exempt) if operation * KFD_IOC_DBG_TRAP_ENABLE has not succeeded prior. * Also returns this error if GPU hardware scheduling is not supported. * * - EPERM (with KFD_IOC_DBG_TRAP_DISABLE exempt) if target process is not * PTRACE_ATTACHED. KFD_IOC_DBG_TRAP_DISABLE is exempt to allow * clean up of debug mode as long as process is debug enabled. * * - EACCES if any DBG_HW_OP (debug hardware operation) is requested when * AMDKFD_IOC_RUNTIME_ENABLE has not succeeded prior. * * - ENODEV if any GPU does not support debugging on a DBG_HW_OP call. * * - Other errors may be returned when a DBG_HW_OP occurs while the GPU * is in a fatal state. *
*/ enum kfd_dbg_trap_operations {
KFD_IOC_DBG_TRAP_ENABLE = 0,
KFD_IOC_DBG_TRAP_DISABLE = 1,
KFD_IOC_DBG_TRAP_SEND_RUNTIME_EVENT = 2,
KFD_IOC_DBG_TRAP_SET_EXCEPTIONS_ENABLED = 3,
KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_OVERRIDE = 4, /* DBG_HW_OP */
KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_MODE = 5, /* DBG_HW_OP */
KFD_IOC_DBG_TRAP_SUSPEND_QUEUES = 6, /* DBG_HW_OP */
KFD_IOC_DBG_TRAP_RESUME_QUEUES = 7, /* DBG_HW_OP */
KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH = 8, /* DBG_HW_OP */
KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH = 9, /* DBG_HW_OP */
KFD_IOC_DBG_TRAP_SET_FLAGS = 10,
KFD_IOC_DBG_TRAP_QUERY_DEBUG_EVENT = 11,
KFD_IOC_DBG_TRAP_QUERY_EXCEPTION_INFO = 12,
KFD_IOC_DBG_TRAP_GET_QUEUE_SNAPSHOT = 13,
KFD_IOC_DBG_TRAP_GET_DEVICE_SNAPSHOT = 14
};
/** * kfd_ioctl_dbg_trap_enable_args * * Arguments for KFD_IOC_DBG_TRAP_ENABLE. * * Enables debug session for target process. Call @op KFD_IOC_DBG_TRAP_DISABLE in * kfd_ioctl_dbg_trap_args to disable debug session. * * @exception_mask (IN) - exceptions to raise to the debugger * @rinfo_ptr (IN) - pointer to runtime info buffer (see kfd_runtime_info) * @rinfo_size (IN/OUT) - size of runtime info buffer in bytes * @dbg_fd (IN) - fd the KFD will nofify the debugger with of raised * exceptions set in exception_mask. * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * Copies KFD saved kfd_runtime_info to @rinfo_ptr on enable. * Size of kfd_runtime saved by the KFD returned to @rinfo_size. * - EBADF if KFD cannot get a reference to dbg_fd. * - EFAULT if KFD cannot copy runtime info to rinfo_ptr. * - EINVAL if target process is already debug enabled. *
*/ struct kfd_ioctl_dbg_trap_enable_args {
__u64 exception_mask;
__u64 rinfo_ptr;
__u32 rinfo_size;
__u32 dbg_fd;
};
/** * kfd_ioctl_dbg_trap_send_runtime_event_args * * * Arguments for KFD_IOC_DBG_TRAP_SEND_RUNTIME_EVENT. * Raises exceptions to runtime. * * @exception_mask (IN) - exceptions to raise to runtime * @gpu_id (IN) - target device id * @queue_id (IN) - target queue id * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * - ENODEV if gpu_id not found. * If exception_mask contains EC_PROCESS_RUNTIME, unblocks pending * AMDKFD_IOC_RUNTIME_ENABLE call - see kfd_ioctl_runtime_enable_args. * All other exceptions are raised to runtime through err_payload_addr. * See kfd_context_save_area_header.
*/ struct kfd_ioctl_dbg_trap_send_runtime_event_args {
__u64 exception_mask;
__u32 gpu_id;
__u32 queue_id;
};
/** * kfd_ioctl_dbg_trap_set_exceptions_enabled_args * * Arguments for KFD_IOC_SET_EXCEPTIONS_ENABLED * Set new exceptions to be raised to the debugger. * * @exception_mask (IN) - new exceptions to raise the debugger * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS.
*/ struct kfd_ioctl_dbg_trap_set_exceptions_enabled_args {
__u64 exception_mask;
};
/** * kfd_ioctl_dbg_trap_set_wave_launch_override_args * * Arguments for KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_OVERRIDE * Enable HW exceptions to raise trap. * * @override_mode (IN) - see kfd_dbg_trap_override_mode * @enable_mask (IN/OUT) - reference kfd_dbg_trap_mask. * IN is the override modes requested to be enabled. * OUT is referenced in Return below. * @support_request_mask (IN/OUT) - reference kfd_dbg_trap_mask. * IN is the override modes requested for support check. * OUT is referenced in Return below. * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * Previous enablement is returned in @enable_mask. * Actual override support is returned in @support_request_mask. * - EINVAL if override mode is not supported. * - EACCES if trap support requested is not actually supported. * i.e. enable_mask (IN) is not a subset of support_request_mask (OUT). * Otherwise it is considered a generic error (see kfd_dbg_trap_operations).
*/ struct kfd_ioctl_dbg_trap_set_wave_launch_override_args {
__u32 override_mode;
__u32 enable_mask;
__u32 support_request_mask;
__u32 pad;
};
/** * kfd_ioctl_dbg_trap_set_wave_launch_mode_args * * Arguments for KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_MODE * Set wave launch mode. * * @mode (IN) - see kfd_dbg_trap_wave_launch_mode * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS.
*/ struct kfd_ioctl_dbg_trap_set_wave_launch_mode_args {
__u32 launch_mode;
__u32 pad;
};
/** * kfd_ioctl_dbg_trap_suspend_queues_ags * * Arguments for KFD_IOC_DBG_TRAP_SUSPEND_QUEUES * Suspend queues. * * @exception_mask (IN) - raised exceptions to clear * @queue_array_ptr (IN) - pointer to array of queue ids (u32 per queue id) * to suspend * @num_queues (IN) - number of queues to suspend in @queue_array_ptr * @grace_period (IN) - wave time allowance before preemption * per 1K GPU clock cycle unit * * Generic errors apply (see kfd_dbg_trap_operations). * Destruction of a suspended queue is blocked until the queue is * resumed. This allows the debugger to access queue information and * the its context save area without running into a race condition on * queue destruction. * Automatically copies per queue context save area header information * into the save area base * (see kfd_queue_snapshot_entry and kfd_context_save_area_header). * * Return - Number of queues suspended on SUCCESS. * . KFD_DBG_QUEUE_ERROR_MASK and KFD_DBG_QUEUE_INVALID_MASK masked * for each queue id in @queue_array_ptr array reports unsuccessful * suspend reason. * KFD_DBG_QUEUE_ERROR_MASK = HW failure. * KFD_DBG_QUEUE_INVALID_MASK = queue does not exist, is new or * is being destroyed.
*/ struct kfd_ioctl_dbg_trap_suspend_queues_args {
__u64 exception_mask;
__u64 queue_array_ptr;
__u32 num_queues;
__u32 grace_period;
};
/** * kfd_ioctl_dbg_trap_resume_queues_args * * Arguments for KFD_IOC_DBG_TRAP_RESUME_QUEUES * Resume queues. * * @queue_array_ptr (IN) - pointer to array of queue ids (u32 per queue id) * to resume * @num_queues (IN) - number of queues to resume in @queue_array_ptr * * Generic errors apply (see kfd_dbg_trap_operations). * Return - Number of queues resumed on SUCCESS. * KFD_DBG_QUEUE_ERROR_MASK and KFD_DBG_QUEUE_INVALID_MASK mask * for each queue id in @queue_array_ptr array reports unsuccessful * resume reason. * KFD_DBG_QUEUE_ERROR_MASK = HW failure. * KFD_DBG_QUEUE_INVALID_MASK = queue does not exist.
*/ struct kfd_ioctl_dbg_trap_resume_queues_args {
__u64 queue_array_ptr;
__u32 num_queues;
__u32 pad;
};
/** * kfd_ioctl_dbg_trap_set_node_address_watch_args * * Arguments for KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH * Sets address watch for device. * * @address (IN) - watch address to set * @mode (IN) - see kfd_dbg_trap_address_watch_mode * @mask (IN) - watch address mask * @gpu_id (IN) - target gpu to set watch point * @id (OUT) - watch id allocated * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * Allocated watch ID returned to @id. * - ENODEV if gpu_id not found. * - ENOMEM if watch IDs can be allocated
*/ struct kfd_ioctl_dbg_trap_set_node_address_watch_args {
__u64 address;
__u32 mode;
__u32 mask;
__u32 gpu_id;
__u32 id;
};
/** * kfd_ioctl_dbg_trap_clear_node_address_watch_args * * Arguments for KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH * Clear address watch for device. * * @gpu_id (IN) - target device to clear watch point * @id (IN) - allocated watch id to clear * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * - ENODEV if gpu_id not found. * - EINVAL if watch ID has not been allocated.
*/ struct kfd_ioctl_dbg_trap_clear_node_address_watch_args {
__u32 gpu_id;
__u32 id;
};
/** * kfd_ioctl_dbg_trap_set_flags_args * * Arguments for KFD_IOC_DBG_TRAP_SET_FLAGS * Sets flags for wave behaviour. * * @flags (IN/OUT) - IN = flags to enable, OUT = flags previously enabled * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * - EACCESS if any debug device does not allow flag options.
*/ struct kfd_ioctl_dbg_trap_set_flags_args {
__u32 flags;
__u32 pad;
};
/** * kfd_ioctl_dbg_trap_query_debug_event_args * * Arguments for KFD_IOC_DBG_TRAP_QUERY_DEBUG_EVENT * * Find one or more raised exceptions. This function can return multiple * exceptions from a single queue or a single device with one call. To find * all raised exceptions, this function must be called repeatedly until it * returns -EAGAIN. Returned exceptions can optionally be cleared by * setting the corresponding bit in the @exception_mask input parameter. * However, clearing an exception prevents retrieving further information * about it with KFD_IOC_DBG_TRAP_QUERY_EXCEPTION_INFO. * * @exception_mask (IN/OUT) - exception to clear (IN) and raised (OUT) * @gpu_id (OUT) - gpu id of exceptions raised * @queue_id (OUT) - queue id of exceptions raised * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on raised exception found * Raised exceptions found are returned in @exception mask * with reported source id returned in @gpu_id or @queue_id. * - EAGAIN if no raised exception has been found
*/ struct kfd_ioctl_dbg_trap_query_debug_event_args {
__u64 exception_mask;
__u32 gpu_id;
__u32 queue_id;
};
/** * kfd_ioctl_dbg_trap_query_exception_info_args * * Arguments KFD_IOC_DBG_TRAP_QUERY_EXCEPTION_INFO * Get additional info on raised exception. * * @info_ptr (IN) - pointer to exception info buffer to copy to * @info_size (IN/OUT) - exception info buffer size (bytes) * @source_id (IN) - target gpu or queue id * @exception_code (IN) - target exception * @clear_exception (IN) - clear raised @exception_code exception * (0 = false, 1 = true) * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * If @exception_code is EC_DEVICE_MEMORY_VIOLATION, copy @info_size(OUT) * bytes of memory exception data to @info_ptr. * If @exception_code is EC_PROCESS_RUNTIME, copy saved * kfd_runtime_info to @info_ptr. * Actual required @info_ptr size (bytes) is returned in @info_size.
*/ struct kfd_ioctl_dbg_trap_query_exception_info_args {
__u64 info_ptr;
__u32 info_size;
__u32 source_id;
__u32 exception_code;
__u32 clear_exception;
};
/** * kfd_ioctl_dbg_trap_get_queue_snapshot_args * * Arguments KFD_IOC_DBG_TRAP_GET_QUEUE_SNAPSHOT * Get queue information. * * @exception_mask (IN) - exceptions raised to clear * @snapshot_buf_ptr (IN) - queue snapshot entry buffer (see kfd_queue_snapshot_entry) * @num_queues (IN/OUT) - number of queue snapshot entries * The debugger specifies the size of the array allocated in @num_queues. * KFD returns the number of queues that actually existed. If this is * larger than the size specified by the debugger, KFD will not overflow * the array allocated by the debugger. * * @entry_size (IN/OUT) - size per entry in bytes * The debugger specifies sizeof(struct kfd_queue_snapshot_entry) in * @entry_size. KFD returns the number of bytes actually populated per * entry. The debugger should use the KFD_IOCTL_MINOR_VERSION to determine, * which fields in struct kfd_queue_snapshot_entry are valid. This allows * growing the ABI in a backwards compatible manner. * Note that entry_size(IN) should still be used to stride the snapshot buffer in the * event that it's larger than actual kfd_queue_snapshot_entry. * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * Copies @num_queues(IN) queue snapshot entries of size @entry_size(IN) * into @snapshot_buf_ptr if @num_queues(IN) > 0. * Otherwise return @num_queues(OUT) queue snapshot entries that exist.
*/ struct kfd_ioctl_dbg_trap_queue_snapshot_args {
__u64 exception_mask;
__u64 snapshot_buf_ptr;
__u32 num_queues;
__u32 entry_size;
};
/** * kfd_ioctl_dbg_trap_get_device_snapshot_args * * Arguments for KFD_IOC_DBG_TRAP_GET_DEVICE_SNAPSHOT * Get device information. * * @exception_mask (IN) - exceptions raised to clear * @snapshot_buf_ptr (IN) - pointer to snapshot buffer (see kfd_dbg_device_info_entry) * @num_devices (IN/OUT) - number of debug devices to snapshot * The debugger specifies the size of the array allocated in @num_devices. * KFD returns the number of devices that actually existed. If this is * larger than the size specified by the debugger, KFD will not overflow * the array allocated by the debugger. * * @entry_size (IN/OUT) - size per entry in bytes * The debugger specifies sizeof(struct kfd_dbg_device_info_entry) in * @entry_size. KFD returns the number of bytes actually populated. The * debugger should use KFD_IOCTL_MINOR_VERSION to determine, which fields * in struct kfd_dbg_device_info_entry are valid. This allows growing the * ABI in a backwards compatible manner. * Note that entry_size(IN) should still be used to stride the snapshot buffer in the * event that it's larger than actual kfd_dbg_device_info_entry. * * Generic errors apply (see kfd_dbg_trap_operations). * Return - 0 on SUCCESS. * Copies @num_devices(IN) device snapshot entries of size @entry_size(IN) * into @snapshot_buf_ptr if @num_devices(IN) > 0. * Otherwise return @num_devices(OUT) queue snapshot entries that exist.
*/ struct kfd_ioctl_dbg_trap_device_snapshot_args {
__u64 exception_mask;
__u64 snapshot_buf_ptr;
__u32 num_devices;
__u32 entry_size;
};
/** * kfd_ioctl_dbg_trap_args * * Arguments to debug target process. * * @pid - target process to debug * @op - debug operation (see kfd_dbg_trap_operations) * * @op determines which union struct args to use. * Refer to kern docs for each kfd_ioctl_dbg_trap_*_args struct.
*/ struct kfd_ioctl_dbg_trap_args {
__u32 pid;
__u32 op;
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