Introduce the GPU debug operations interface.
For ROCm-GDB to extend the GNU Debugger's ability to inspect the AMD GPU
instruction set, provide the necessary interface to allow the debugger
to HW debug-mode set and query exceptions per HSA queue, process or
device.
The runtime_enable interface coordinates exception handling with the
HSA runtime.
Full documention is available in the kern docs at uapi/linux/kfd_ioctl.h.
Signed-off-by: Jonathan Kim <jonathan.kim@xxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 48 ++
include/uapi/linux/kfd_ioctl.h | 562 ++++++++++++++++++++++-
2 files changed, 609 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
index dc774ddf3445..f6f4a348b94b 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c
@@ -2614,6 +2614,48 @@ static int kfd_ioctl_criu(struct file *filep, struct kfd_process *p, void *data)
return ret;
}
+static int kfd_ioctl_runtime_enable(struct file *filep, struct kfd_process *p, void *data)
+{
+ return 0;
+}
+
+static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, void *data)
+{
+ struct kfd_ioctl_dbg_trap_args *args = data;
+ int r = 0;
+
+ if (sched_policy == KFD_SCHED_POLICY_NO_HWS) {
+ pr_err("Debugging does not support sched_policy %i", sched_policy);
+ return -EINVAL;
+ }
+
+ switch (args->op) {
+ case KFD_IOC_DBG_TRAP_ENABLE:
+ case KFD_IOC_DBG_TRAP_DISABLE:
+ case KFD_IOC_DBG_TRAP_SEND_RUNTIME_EVENT:
+ case KFD_IOC_DBG_TRAP_SET_EXCEPTIONS_ENABLED:
+ case KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_OVERRIDE:
+ case KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_MODE:
+ case KFD_IOC_DBG_TRAP_SUSPEND_QUEUES:
+ case KFD_IOC_DBG_TRAP_RESUME_QUEUES:
+ case KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH:
+ case KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH:
+ case KFD_IOC_DBG_TRAP_SET_FLAGS:
+ case KFD_IOC_DBG_TRAP_QUERY_DEBUG_EVENT:
+ case KFD_IOC_DBG_TRAP_QUERY_EXCEPTION_INFO:
+ case KFD_IOC_DBG_TRAP_GET_QUEUE_SNAPSHOT:
+ case KFD_IOC_DBG_TRAP_GET_DEVICE_SNAPSHOT:
+ pr_warn("Debugging not supported yet\n");
+ r = -EPERM;
+ break;
+ default:
+ pr_err("Invalid option: %i\n", args->op);
+ r = -EINVAL;
+ }
+
+ return r;
+}
+
#define AMDKFD_IOCTL_DEF(ioctl, _func, _flags) \
[_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, \
.cmd_drv = 0, .name = #ioctl}
@@ -2723,6 +2765,12 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = {
AMDKFD_IOCTL_DEF(AMDKFD_IOC_AVAILABLE_MEMORY,
kfd_ioctl_get_available_memory, 0),
+
+ AMDKFD_IOCTL_DEF(AMDKFD_IOC_RUNTIME_ENABLE,
+ kfd_ioctl_runtime_enable, 0),
+
+ AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_TRAP,
+ kfd_ioctl_set_debug_trap, 0),
};
#define AMDKFD_CORE_IOCTL_COUNT ARRAY_SIZE(amdkfd_ioctls)
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index 42b60198b6c5..5517dd28b974 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -109,6 +109,18 @@ struct kfd_ioctl_get_available_memory_args {
__u32 pad;
};
+struct kfd_dbg_device_info_entry {
+ __u64 exception_status;
+ __u64 lds_base;
+ __u64 lds_limit;
+ __u64 scratch_base;
+ __u64 scratch_limit;
+ __u64 gpuvm_base;
+ __u64 gpuvm_limit;
+ __u32 gpu_id;
+ __u32 pad;
+};
+
/* 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
@@ -766,6 +778,548 @@ struct kfd_ioctl_set_xnack_mode_args {
__s32 xnack_enabled;
};
+/* Wave launch override modes */
+enum kfd_dbg_trap_override_mode {
+ KFD_DBG_TRAP_OVERRIDE_OR = 0,
+ KFD_DBG_TRAP_OVERRIDE_REPLACE = 1
+};
+
+/* Wave launch overrides */
+enum kfd_dbg_trap_mask {
+ KFD_DBG_TRAP_MASK_FP_INVALID = 1,
+ KFD_DBG_TRAP_MASK_FP_INPUT_DENORMAL = 2,
+ KFD_DBG_TRAP_MASK_FP_DIVIDE_BY_ZERO = 4,
+ KFD_DBG_TRAP_MASK_FP_OVERFLOW = 8,
+ KFD_DBG_TRAP_MASK_FP_UNDERFLOW = 16,
+ KFD_DBG_TRAP_MASK_FP_INEXACT = 32,
+ KFD_DBG_TRAP_MASK_INT_DIVIDE_BY_ZERO = 64,
+ KFD_DBG_TRAP_MASK_DBG_ADDRESS_WATCH = 128,
+ KFD_DBG_TRAP_MASK_DBG_MEMORY_VIOLATION = 256
+};
+
+/* Wave launch modes */
+enum kfd_dbg_trap_wave_launch_mode {
+ KFD_DBG_TRAP_WAVE_LAUNCH_MODE_NORMAL = 0,
+ KFD_DBG_TRAP_WAVE_LAUNCH_MODE_HALT = 1,
+ KFD_DBG_TRAP_WAVE_LAUNCH_MODE_KILL = 2,
+ KFD_DBG_TRAP_WAVE_LAUNCH_MODE_DEBUG = 3,
+ KFD_DBG_TRAP_WAVE_LAUNCH_MODE_STALL = 4
+};
+
+/* Address watch modes */
+enum kfd_dbg_trap_address_watch_mode {
+ KFD_DBG_TRAP_ADDRESS_WATCH_MODE_READ = 0,
+ KFD_DBG_TRAP_ADDRESS_WATCH_MODE_NONREAD = 1,
+ KFD_DBG_TRAP_ADDRESS_WATCH_MODE_ATOMIC = 2,
+ KFD_DBG_TRAP_ADDRESS_WATCH_MODE_ALL = 3
+};
+
+/* Additional wave settings */
+enum kfd_dbg_trap_flags {
+ KFD_DBG_TRAP_FLAG_SINGLE_MEM_OP = 1,
+ KFD_DBG_TRAP_FLAG_SINGLE_ALU_OP = 2
+};
+
+/* Trap exceptions */
+enum kfd_dbg_trap_exception_code {
+ EC_NONE = 0,
+ /* per queue */
+ EC_QUEUE_WAVE_ABORT = 1,
+ EC_QUEUE_WAVE_TRAP = 2,
+ EC_QUEUE_WAVE_MATH_ERROR = 3,
+ EC_QUEUE_WAVE_ILLEGAL_INSTRUCTION = 4,
+ EC_QUEUE_WAVE_MEMORY_VIOLATION = 5,
+ EC_QUEUE_WAVE_APERTURE_VIOLATION = 6,
+ EC_QUEUE_PACKET_DISPATCH_DIM_INVALID = 16,
+ EC_QUEUE_PACKET_DISPATCH_GROUP_SEGMENT_SIZE_INVALID = 17,
+ EC_QUEUE_PACKET_DISPATCH_CODE_INVALID = 18,
+ EC_QUEUE_PACKET_RESERVED = 19,
+ EC_QUEUE_PACKET_UNSUPPORTED = 20,
+ EC_QUEUE_PACKET_DISPATCH_WORK_GROUP_SIZE_INVALID = 21,
+ EC_QUEUE_PACKET_DISPATCH_REGISTER_INVALID = 22,
+ EC_QUEUE_PACKET_VENDOR_UNSUPPORTED = 23,
+ EC_QUEUE_PREEMPTION_ERROR = 30,
+ EC_QUEUE_NEW = 31,
+ /* per device */
+ EC_DEVICE_QUEUE_DELETE = 32,
+ EC_DEVICE_MEMORY_VIOLATION = 33,
+ EC_DEVICE_RAS_ERROR = 34,
+ EC_DEVICE_FATAL_HALT = 35,
+ EC_DEVICE_NEW = 36,
+ /* per process */
+ EC_PROCESS_RUNTIME = 48,
+ EC_PROCESS_DEVICE_REMOVE = 49,
+ EC_MAX
+};
+
+/* Mask generated by ecode in kfd_dbg_trap_exception_code */
+#define KFD_EC_MASK(ecode) (1ULL << (ecode - 1))
+
+/* Masks for exception code type checks below */
+#define KFD_EC_MASK_QUEUE (KFD_EC_MASK(EC_QUEUE_WAVE_ABORT) | \
+ KFD_EC_MASK(EC_QUEUE_WAVE_TRAP) | \
+ KFD_EC_MASK(EC_QUEUE_WAVE_MATH_ERROR) | \
+ KFD_EC_MASK(EC_QUEUE_WAVE_ILLEGAL_INSTRUCTION) | \
+ KFD_EC_MASK(EC_QUEUE_WAVE_MEMORY_VIOLATION) | \
+ KFD_EC_MASK(EC_QUEUE_WAVE_APERTURE_VIOLATION) | \
+ KFD_EC_MASK(EC_QUEUE_PACKET_DISPATCH_DIM_INVALID) | \
+ KFD_EC_MASK(EC_QUEUE_PACKET_DISPATCH_GROUP_SEGMENT_SIZE_INVALID) | \
+ KFD_EC_MASK(EC_QUEUE_PACKET_DISPATCH_CODE_INVALID) | \
+ KFD_EC_MASK(EC_QUEUE_PACKET_UNSUPPORTED) | \
+ KFD_EC_MASK(EC_QUEUE_PACKET_DISPATCH_WORK_GROUP_SIZE_INVALID) | \
+ KFD_EC_MASK(EC_QUEUE_PACKET_DISPATCH_REGISTER_INVALID) | \
+ KFD_EC_MASK(EC_QUEUE_PACKET_VENDOR_UNSUPPORTED) | \
+ KFD_EC_MASK(EC_QUEUE_PREEMPTION_ERROR) | \
+ KFD_EC_MASK(EC_QUEUE_NEW))
+#define KFD_EC_MASK_DEVICE (KFD_EC_MASK(EC_DEVICE_QUEUE_DELETE) | \
+ KFD_EC_MASK(EC_DEVICE_RAS_ERROR) | \
+ KFD_EC_MASK(EC_DEVICE_FATAL_HALT) | \
+ KFD_EC_MASK(EC_DEVICE_MEMORY_VIOLATION) | \
+ KFD_EC_MASK(EC_DEVICE_NEW))
+#define KFD_EC_MASK_PROCESS (KFD_EC_MASK(EC_PROCESS_RUNTIME) | \
+ KFD_EC_MASK(EC_PROCESS_DEVICE_REMOVE))
+
+/* Checks for exception code types for KFD search */
+#define KFD_DBG_EC_TYPE_IS_QUEUE(ecode) \
+ (!!(KFD_EC_MASK(ecode) & KFD_EC_MASK_QUEUE))
+#define KFD_DBG_EC_TYPE_IS_DEVICE(ecode) \
+ (!!(KFD_EC_MASK(ecode) & KFD_EC_MASK_DEVICE))
+#define KFD_DBG_EC_TYPE_IS_PROCESS(ecode) \
+ (!!(KFD_EC_MASK(ecode) & KFD_EC_MASK_PROCESS))
+
+
+/* Runtime enable states */
+enum kfd_dbg_runtime_state {
+ DEBUG_RUNTIME_STATE_DISABLED = 0,
+ DEBUG_RUNTIME_STATE_ENABLED = 1,
+ DEBUG_RUNTIME_STATE_ENABLED_BUSY = 2,
+ DEBUG_RUNTIME_STATE_ENABLED_ERROR = 3
+};
+
+/* Runtime enable status */
+struct kfd_runtime_info {
+ __u64 r_debug;
+ __u32 runtime_state;
+ __u32 ttmp_setup;
+};
+
+/* Enable modes for runtime enable */
+#define KFD_RUNTIME_ENABLE_MODE_ENABLE_MASK 1
+#define KFD_RUNTIME_ENABLE_MODE_TTMP_SAVE_MASK 2
+
+/**
+ * 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)
+ *
+ * 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;
+};
+
+/* Queue information */
+struct kfd_queue_snapshot_entry {
+ __u64 exception_status;
+ __u64 ring_base_address;
+ __u64 write_pointer_address;
+ __u64 read_pointer_address;
+ __u64 ctx_save_restore_address;
+ __u32 queue_id;
+ __u32 gpu_id;
+ __u32 ring_size;
+ __u32 queue_type;
+ __u32 ctx_save_restore_area_size;
+ __u32 reserved[17];
+};
+
+/* Queue status return for suspend/resume */
+#define KFD_DBG_QUEUE_ERROR_BIT 30
+#define KFD_DBG_QUEUE_INVALID_BIT 31
+#define KFD_DBG_QUEUE_ERROR_MASK (1 << KFD_DBG_QUEUE_ERROR_BIT)
+#define KFD_DBG_QUEUE_INVALID_MASK (1 << KFD_DBG_QUEUE_INVALID_BIT)
+
+/* Context save area header information */
+struct kfd_context_save_area_header {
+ __u32 control_stack_offset;
+ __u32 control_stack_size;
+ __u32 wave_state_offset;
+ __u32 wave_state_size;
+ __u32 debug_offset;
+ __u32 debug_size;
+ __u64 err_payload_addr;
+ __u32 err_event_id;
+ __u32 reserved1;
+};
+
+/* Debug operations */
+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,
+ KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_MODE = 5,
+ KFD_IOC_DBG_TRAP_SUSPEND_QUEUES = 6,
+ KFD_IOC_DBG_TRAP_RESUME_QUEUES = 7,
+ KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH = 8,
+ KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH = 9,
+ 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
+ * 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.
+ */
+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
+ *
+ * Return - 0 on SUCCESS.
+ * 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
+ */
+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) - see kfd_dbg_trap_mask
+ * @support_request_mask (IN/OUT) - see kfd_dbg_trap_mask
+ *
+ * Return - 0 on SUCCESS.
+ * - EPERM if mode is not supported.
+ * - EPERM if mode is not supported.
+ * - EACCES if trap support requested is not actually supported.
+ * Previous enablement is returned in @enable_mask.
+ * Actual support is returned in @support_request_mask.
+ */
+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
+ *
+ * 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_args
+ *
+ * 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 (DWORD 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
+ *
+ * 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.
+ * Suspended queues can never be destroyed.
+ * 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).
+ */
+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 (DWORD per queue id)
+ * to resume
+ * @num_queues (IN) - number of queues to resume in @queue_array_ptr
+ *
+ * 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
+ * @dev_id (IN) - target device to set watch point
+ * @id (OUT) - watch id allocated
+ *
+ * Return - 0 on SUCCESS.
+ * Allocated watch ID returned to @id.
+ */
+struct kfd_ioctl_dbg_trap_set_node_address_watch_args {
+ __u64 address;
+ __u32 mode;
+ __u32 mask;
+ __u32 dev_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.
+ *
+ * @dev_id (IN) - target device to clear watch point
+ * @id (IN) - allocated watch id to clear
+ *
+ * Return - 0 on SUCCESS.
+ */
+struct kfd_ioctl_dbg_trap_clear_node_address_watch_args {
+ __u32 dev_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
+ *
+ * Return - 0 on SUCCESS.
+ * - EPERM 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 a raised exception.
+ *
+ * @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
+ *
+ * Return - 0 on raised exception found
+ * - EAGAIN if no raised exception has been found
+ * Raised exceptions found are returned in @exception mask
+ * with reported source id returned in @gpu_id or @queue_id.
+ */
+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)
+ *
+ * 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)
+ * @buf_size (IN/OUT) - number of queue snapshot entries
+ * @entry_size (IN/OUT) - size per entry in bytes
+ *
+ * Return - 0 on SUCCESS.
+ * Copies @size(IN) queue snapshot entries into @snapshot_buf_ptr if
+ * @buf_size(IN) > 0.
+ * Otherwise return @buf_size(OUT) queue snapshot entries that exist.
+ */
+struct kfd_ioctl_dbg_trap_queue_snapshot_args {
+ __u64 exception_mask;
+ __u64 snapshot_buf_ptr;
+ __u32 buf_size;
+ __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_device_snapshot_entry)
+ * @buf_size (IN/OUT) - number of debug devices to snapshot
+ * @entry_size (IN/OUT) - size per entry in bytes
+ *
+ * Return - 0 on SUCCESS.
+ * - ENOSPC if requested number of debug devices is less than the
+ * actual number of debug devices.
+ * Copies @buf_size(OUT) number of device snapshot entries into
+ * @snapshot_buf_ptr.
+ * Actual number of device snapshot entries returned in @buf_size.
+ */
+struct kfd_ioctl_dbg_trap_device_snapshot_args {
+ __u64 exception_mask;
+ __u64 snapshot_buf_ptr;
+ __u32 buf_size;
+ __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;
+
+ union {
+ struct kfd_ioctl_dbg_trap_enable_args enable;
+ struct kfd_ioctl_dbg_trap_send_runtime_event_args send_runtime_event;
+ struct kfd_ioctl_dbg_trap_set_exceptions_enabled_args set_exceptions_enabled;
+ struct kfd_ioctl_dbg_trap_set_wave_launch_override_args launch_override;
+ struct kfd_ioctl_dbg_trap_set_wave_launch_mode_args launch_mode;
+ struct kfd_ioctl_dbg_trap_suspend_queues_args suspend_queues;
+ struct kfd_ioctl_dbg_trap_resume_queues_args resume_queues;
+ struct kfd_ioctl_dbg_trap_set_node_address_watch_args set_node_address_watch;
+ struct kfd_ioctl_dbg_trap_clear_node_address_watch_args clear_node_address_watch;
+ struct kfd_ioctl_dbg_trap_set_flags_args set_flags;
+ struct kfd_ioctl_dbg_trap_query_debug_event_args query_debug_event;
+ struct kfd_ioctl_dbg_trap_query_exception_info_args query_exception_info;
+ struct kfd_ioctl_dbg_trap_queue_snapshot_args queue_snapshot;
+ struct kfd_ioctl_dbg_trap_device_snapshot_args device_snapshot;
+ };
+};
+
#define AMDKFD_IOCTL_BASE 'K'
#define AMDKFD_IO(nr) _IO(AMDKFD_IOCTL_BASE, nr)
#define AMDKFD_IOR(nr, type) _IOR(AMDKFD_IOCTL_BASE, nr, type)
@@ -877,7 +1431,13 @@ struct kfd_ioctl_set_xnack_mode_args {
#define AMDKFD_IOC_AVAILABLE_MEMORY \
AMDKFD_IOWR(0x23, struct kfd_ioctl_get_available_memory_args)
+#define AMDKFD_IOC_RUNTIME_ENABLE \
+ AMDKFD_IOWR(0x24, struct kfd_ioctl_runtime_enable_args)
+
+#define AMDKFD_IOC_DBG_TRAP \
+ AMDKFD_IOWR(0x25, struct kfd_ioctl_dbg_trap_args)
+
#define AMDKFD_COMMAND_START 0x01
-#define AMDKFD_COMMAND_END 0x24
+#define AMDKFD_COMMAND_END 0x26
#endif
--
2.25.1
