From ace9429bb58fd418f0c81d4c2835699bddf6bde6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:27:49 +0200 Subject: Adding upstream version 6.6.15. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 3410 ++++++++++++++++++++++++++++++ 1 file changed, 3410 insertions(+) create mode 100644 drivers/gpu/drm/amd/amdkfd/kfd_chardev.c (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_chardev.c') diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c new file mode 100644 index 0000000000..c37f1fcd21 --- /dev/null +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -0,0 +1,3410 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT +/* + * Copyright 2014-2022 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "kfd_priv.h" +#include "kfd_device_queue_manager.h" +#include "kfd_svm.h" +#include "amdgpu_amdkfd.h" +#include "kfd_smi_events.h" +#include "amdgpu_dma_buf.h" +#include "kfd_debug.h" + +static long kfd_ioctl(struct file *, unsigned int, unsigned long); +static int kfd_open(struct inode *, struct file *); +static int kfd_release(struct inode *, struct file *); +static int kfd_mmap(struct file *, struct vm_area_struct *); + +static const char kfd_dev_name[] = "kfd"; + +static const struct file_operations kfd_fops = { + .owner = THIS_MODULE, + .unlocked_ioctl = kfd_ioctl, + .compat_ioctl = compat_ptr_ioctl, + .open = kfd_open, + .release = kfd_release, + .mmap = kfd_mmap, +}; + +static int kfd_char_dev_major = -1; +static struct class *kfd_class; +struct device *kfd_device; + +static inline struct kfd_process_device *kfd_lock_pdd_by_id(struct kfd_process *p, __u32 gpu_id) +{ + struct kfd_process_device *pdd; + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, gpu_id); + + if (pdd) + return pdd; + + mutex_unlock(&p->mutex); + return NULL; +} + +static inline void kfd_unlock_pdd(struct kfd_process_device *pdd) +{ + mutex_unlock(&pdd->process->mutex); +} + +int kfd_chardev_init(void) +{ + int err = 0; + + kfd_char_dev_major = register_chrdev(0, kfd_dev_name, &kfd_fops); + err = kfd_char_dev_major; + if (err < 0) + goto err_register_chrdev; + + kfd_class = class_create(kfd_dev_name); + err = PTR_ERR(kfd_class); + if (IS_ERR(kfd_class)) + goto err_class_create; + + kfd_device = device_create(kfd_class, NULL, + MKDEV(kfd_char_dev_major, 0), + NULL, kfd_dev_name); + err = PTR_ERR(kfd_device); + if (IS_ERR(kfd_device)) + goto err_device_create; + + return 0; + +err_device_create: + class_destroy(kfd_class); +err_class_create: + unregister_chrdev(kfd_char_dev_major, kfd_dev_name); +err_register_chrdev: + return err; +} + +void kfd_chardev_exit(void) +{ + device_destroy(kfd_class, MKDEV(kfd_char_dev_major, 0)); + class_destroy(kfd_class); + unregister_chrdev(kfd_char_dev_major, kfd_dev_name); + kfd_device = NULL; +} + + +static int kfd_open(struct inode *inode, struct file *filep) +{ + struct kfd_process *process; + bool is_32bit_user_mode; + + if (iminor(inode) != 0) + return -ENODEV; + + is_32bit_user_mode = in_compat_syscall(); + + if (is_32bit_user_mode) { + dev_warn(kfd_device, + "Process %d (32-bit) failed to open /dev/kfd\n" + "32-bit processes are not supported by amdkfd\n", + current->pid); + return -EPERM; + } + + process = kfd_create_process(current); + if (IS_ERR(process)) + return PTR_ERR(process); + + if (kfd_process_init_cwsr_apu(process, filep)) { + kfd_unref_process(process); + return -EFAULT; + } + + /* filep now owns the reference returned by kfd_create_process */ + filep->private_data = process; + + dev_dbg(kfd_device, "process %d opened, compat mode (32 bit) - %d\n", + process->pasid, process->is_32bit_user_mode); + + return 0; +} + +static int kfd_release(struct inode *inode, struct file *filep) +{ + struct kfd_process *process = filep->private_data; + + if (process) + kfd_unref_process(process); + + return 0; +} + +static int kfd_ioctl_get_version(struct file *filep, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_get_version_args *args = data; + + args->major_version = KFD_IOCTL_MAJOR_VERSION; + args->minor_version = KFD_IOCTL_MINOR_VERSION; + + return 0; +} + +static int set_queue_properties_from_user(struct queue_properties *q_properties, + struct kfd_ioctl_create_queue_args *args) +{ + /* + * Repurpose queue percentage to accommodate new features: + * bit 0-7: queue percentage + * bit 8-15: pm4_target_xcc + */ + if ((args->queue_percentage & 0xFF) > KFD_MAX_QUEUE_PERCENTAGE) { + pr_err("Queue percentage must be between 0 to KFD_MAX_QUEUE_PERCENTAGE\n"); + return -EINVAL; + } + + if (args->queue_priority > KFD_MAX_QUEUE_PRIORITY) { + pr_err("Queue priority must be between 0 to KFD_MAX_QUEUE_PRIORITY\n"); + return -EINVAL; + } + + if ((args->ring_base_address) && + (!access_ok((const void __user *) args->ring_base_address, + sizeof(uint64_t)))) { + pr_err("Can't access ring base address\n"); + return -EFAULT; + } + + if (!is_power_of_2(args->ring_size) && (args->ring_size != 0)) { + pr_err("Ring size must be a power of 2 or 0\n"); + return -EINVAL; + } + + if (!access_ok((const void __user *) args->read_pointer_address, + sizeof(uint32_t))) { + pr_err("Can't access read pointer\n"); + return -EFAULT; + } + + if (!access_ok((const void __user *) args->write_pointer_address, + sizeof(uint32_t))) { + pr_err("Can't access write pointer\n"); + return -EFAULT; + } + + if (args->eop_buffer_address && + !access_ok((const void __user *) args->eop_buffer_address, + sizeof(uint32_t))) { + pr_debug("Can't access eop buffer"); + return -EFAULT; + } + + if (args->ctx_save_restore_address && + !access_ok((const void __user *) args->ctx_save_restore_address, + sizeof(uint32_t))) { + pr_debug("Can't access ctx save restore buffer"); + return -EFAULT; + } + + q_properties->is_interop = false; + q_properties->is_gws = false; + q_properties->queue_percent = args->queue_percentage & 0xFF; + /* bit 8-15 are repurposed to be PM4 target XCC */ + q_properties->pm4_target_xcc = (args->queue_percentage >> 8) & 0xFF; + q_properties->priority = args->queue_priority; + q_properties->queue_address = args->ring_base_address; + q_properties->queue_size = args->ring_size; + q_properties->read_ptr = (uint32_t *) args->read_pointer_address; + q_properties->write_ptr = (uint32_t *) args->write_pointer_address; + q_properties->eop_ring_buffer_address = args->eop_buffer_address; + q_properties->eop_ring_buffer_size = args->eop_buffer_size; + q_properties->ctx_save_restore_area_address = + args->ctx_save_restore_address; + q_properties->ctx_save_restore_area_size = args->ctx_save_restore_size; + q_properties->ctl_stack_size = args->ctl_stack_size; + if (args->queue_type == KFD_IOC_QUEUE_TYPE_COMPUTE || + args->queue_type == KFD_IOC_QUEUE_TYPE_COMPUTE_AQL) + q_properties->type = KFD_QUEUE_TYPE_COMPUTE; + else if (args->queue_type == KFD_IOC_QUEUE_TYPE_SDMA) + q_properties->type = KFD_QUEUE_TYPE_SDMA; + else if (args->queue_type == KFD_IOC_QUEUE_TYPE_SDMA_XGMI) + q_properties->type = KFD_QUEUE_TYPE_SDMA_XGMI; + else + return -ENOTSUPP; + + if (args->queue_type == KFD_IOC_QUEUE_TYPE_COMPUTE_AQL) + q_properties->format = KFD_QUEUE_FORMAT_AQL; + else + q_properties->format = KFD_QUEUE_FORMAT_PM4; + + pr_debug("Queue Percentage: %d, %d\n", + q_properties->queue_percent, args->queue_percentage); + + pr_debug("Queue Priority: %d, %d\n", + q_properties->priority, args->queue_priority); + + pr_debug("Queue Address: 0x%llX, 0x%llX\n", + q_properties->queue_address, args->ring_base_address); + + pr_debug("Queue Size: 0x%llX, %u\n", + q_properties->queue_size, args->ring_size); + + pr_debug("Queue r/w Pointers: %px, %px\n", + q_properties->read_ptr, + q_properties->write_ptr); + + pr_debug("Queue Format: %d\n", q_properties->format); + + pr_debug("Queue EOP: 0x%llX\n", q_properties->eop_ring_buffer_address); + + pr_debug("Queue CTX save area: 0x%llX\n", + q_properties->ctx_save_restore_area_address); + + return 0; +} + +static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_create_queue_args *args = data; + struct kfd_node *dev; + int err = 0; + unsigned int queue_id; + struct kfd_process_device *pdd; + struct queue_properties q_properties; + uint32_t doorbell_offset_in_process = 0; + struct amdgpu_bo *wptr_bo = NULL; + + memset(&q_properties, 0, sizeof(struct queue_properties)); + + pr_debug("Creating queue ioctl\n"); + + err = set_queue_properties_from_user(&q_properties, args); + if (err) + return err; + + pr_debug("Looking for gpu id 0x%x\n", args->gpu_id); + + mutex_lock(&p->mutex); + + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + if (!pdd) { + pr_debug("Could not find gpu id 0x%x\n", args->gpu_id); + err = -EINVAL; + goto err_pdd; + } + dev = pdd->dev; + + pdd = kfd_bind_process_to_device(dev, p); + if (IS_ERR(pdd)) { + err = -ESRCH; + goto err_bind_process; + } + + if (!pdd->qpd.proc_doorbells) { + err = kfd_alloc_process_doorbells(dev->kfd, pdd); + if (err) { + pr_debug("failed to allocate process doorbells\n"); + goto err_bind_process; + } + } + + /* Starting with GFX11, wptr BOs must be mapped to GART for MES to determine work + * on unmapped queues for usermode queue oversubscription (no aggregated doorbell) + */ + if (dev->kfd->shared_resources.enable_mes && + ((dev->adev->mes.sched_version & AMDGPU_MES_API_VERSION_MASK) + >> AMDGPU_MES_API_VERSION_SHIFT) >= 2) { + struct amdgpu_bo_va_mapping *wptr_mapping; + struct amdgpu_vm *wptr_vm; + + wptr_vm = drm_priv_to_vm(pdd->drm_priv); + err = amdgpu_bo_reserve(wptr_vm->root.bo, false); + if (err) + goto err_wptr_map_gart; + + wptr_mapping = amdgpu_vm_bo_lookup_mapping( + wptr_vm, args->write_pointer_address >> PAGE_SHIFT); + amdgpu_bo_unreserve(wptr_vm->root.bo); + if (!wptr_mapping) { + pr_err("Failed to lookup wptr bo\n"); + err = -EINVAL; + goto err_wptr_map_gart; + } + + wptr_bo = wptr_mapping->bo_va->base.bo; + if (wptr_bo->tbo.base.size > PAGE_SIZE) { + pr_err("Requested GART mapping for wptr bo larger than one page\n"); + err = -EINVAL; + goto err_wptr_map_gart; + } + + err = amdgpu_amdkfd_map_gtt_bo_to_gart(dev->adev, wptr_bo); + if (err) { + pr_err("Failed to map wptr bo to GART\n"); + goto err_wptr_map_gart; + } + } + + pr_debug("Creating queue for PASID 0x%x on gpu 0x%x\n", + p->pasid, + dev->id); + + err = pqm_create_queue(&p->pqm, dev, filep, &q_properties, &queue_id, wptr_bo, + NULL, NULL, NULL, &doorbell_offset_in_process); + if (err != 0) + goto err_create_queue; + + args->queue_id = queue_id; + + + /* Return gpu_id as doorbell offset for mmap usage */ + args->doorbell_offset = KFD_MMAP_TYPE_DOORBELL; + args->doorbell_offset |= KFD_MMAP_GPU_ID(args->gpu_id); + if (KFD_IS_SOC15(dev)) + /* On SOC15 ASICs, include the doorbell offset within the + * process doorbell frame, which is 2 pages. + */ + args->doorbell_offset |= doorbell_offset_in_process; + + mutex_unlock(&p->mutex); + + pr_debug("Queue id %d was created successfully\n", args->queue_id); + + pr_debug("Ring buffer address == 0x%016llX\n", + args->ring_base_address); + + pr_debug("Read ptr address == 0x%016llX\n", + args->read_pointer_address); + + pr_debug("Write ptr address == 0x%016llX\n", + args->write_pointer_address); + + kfd_dbg_ev_raise(KFD_EC_MASK(EC_QUEUE_NEW), p, dev, queue_id, false, NULL, 0); + return 0; + +err_create_queue: + if (wptr_bo) + amdgpu_amdkfd_free_gtt_mem(dev->adev, wptr_bo); +err_wptr_map_gart: +err_bind_process: +err_pdd: + mutex_unlock(&p->mutex); + return err; +} + +static int kfd_ioctl_destroy_queue(struct file *filp, struct kfd_process *p, + void *data) +{ + int retval; + struct kfd_ioctl_destroy_queue_args *args = data; + + pr_debug("Destroying queue id %d for pasid 0x%x\n", + args->queue_id, + p->pasid); + + mutex_lock(&p->mutex); + + retval = pqm_destroy_queue(&p->pqm, args->queue_id); + + mutex_unlock(&p->mutex); + return retval; +} + +static int kfd_ioctl_update_queue(struct file *filp, struct kfd_process *p, + void *data) +{ + int retval; + struct kfd_ioctl_update_queue_args *args = data; + struct queue_properties properties; + + /* + * Repurpose queue percentage to accommodate new features: + * bit 0-7: queue percentage + * bit 8-15: pm4_target_xcc + */ + if ((args->queue_percentage & 0xFF) > KFD_MAX_QUEUE_PERCENTAGE) { + pr_err("Queue percentage must be between 0 to KFD_MAX_QUEUE_PERCENTAGE\n"); + return -EINVAL; + } + + if (args->queue_priority > KFD_MAX_QUEUE_PRIORITY) { + pr_err("Queue priority must be between 0 to KFD_MAX_QUEUE_PRIORITY\n"); + return -EINVAL; + } + + if ((args->ring_base_address) && + (!access_ok((const void __user *) args->ring_base_address, + sizeof(uint64_t)))) { + pr_err("Can't access ring base address\n"); + return -EFAULT; + } + + if (!is_power_of_2(args->ring_size) && (args->ring_size != 0)) { + pr_err("Ring size must be a power of 2 or 0\n"); + return -EINVAL; + } + + properties.queue_address = args->ring_base_address; + properties.queue_size = args->ring_size; + properties.queue_percent = args->queue_percentage & 0xFF; + /* bit 8-15 are repurposed to be PM4 target XCC */ + properties.pm4_target_xcc = (args->queue_percentage >> 8) & 0xFF; + properties.priority = args->queue_priority; + + pr_debug("Updating queue id %d for pasid 0x%x\n", + args->queue_id, p->pasid); + + mutex_lock(&p->mutex); + + retval = pqm_update_queue_properties(&p->pqm, args->queue_id, &properties); + + mutex_unlock(&p->mutex); + + return retval; +} + +static int kfd_ioctl_set_cu_mask(struct file *filp, struct kfd_process *p, + void *data) +{ + int retval; + const int max_num_cus = 1024; + struct kfd_ioctl_set_cu_mask_args *args = data; + struct mqd_update_info minfo = {0}; + uint32_t __user *cu_mask_ptr = (uint32_t __user *)args->cu_mask_ptr; + size_t cu_mask_size = sizeof(uint32_t) * (args->num_cu_mask / 32); + + if ((args->num_cu_mask % 32) != 0) { + pr_debug("num_cu_mask 0x%x must be a multiple of 32", + args->num_cu_mask); + return -EINVAL; + } + + minfo.cu_mask.count = args->num_cu_mask; + if (minfo.cu_mask.count == 0) { + pr_debug("CU mask cannot be 0"); + return -EINVAL; + } + + /* To prevent an unreasonably large CU mask size, set an arbitrary + * limit of max_num_cus bits. We can then just drop any CU mask bits + * past max_num_cus bits and just use the first max_num_cus bits. + */ + if (minfo.cu_mask.count > max_num_cus) { + pr_debug("CU mask cannot be greater than 1024 bits"); + minfo.cu_mask.count = max_num_cus; + cu_mask_size = sizeof(uint32_t) * (max_num_cus/32); + } + + minfo.cu_mask.ptr = kzalloc(cu_mask_size, GFP_KERNEL); + if (!minfo.cu_mask.ptr) + return -ENOMEM; + + retval = copy_from_user(minfo.cu_mask.ptr, cu_mask_ptr, cu_mask_size); + if (retval) { + pr_debug("Could not copy CU mask from userspace"); + retval = -EFAULT; + goto out; + } + + mutex_lock(&p->mutex); + + retval = pqm_update_mqd(&p->pqm, args->queue_id, &minfo); + + mutex_unlock(&p->mutex); + +out: + kfree(minfo.cu_mask.ptr); + return retval; +} + +static int kfd_ioctl_get_queue_wave_state(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_get_queue_wave_state_args *args = data; + int r; + + mutex_lock(&p->mutex); + + r = pqm_get_wave_state(&p->pqm, args->queue_id, + (void __user *)args->ctl_stack_address, + &args->ctl_stack_used_size, + &args->save_area_used_size); + + mutex_unlock(&p->mutex); + + return r; +} + +static int kfd_ioctl_set_memory_policy(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_set_memory_policy_args *args = data; + int err = 0; + struct kfd_process_device *pdd; + enum cache_policy default_policy, alternate_policy; + + if (args->default_policy != KFD_IOC_CACHE_POLICY_COHERENT + && args->default_policy != KFD_IOC_CACHE_POLICY_NONCOHERENT) { + return -EINVAL; + } + + if (args->alternate_policy != KFD_IOC_CACHE_POLICY_COHERENT + && args->alternate_policy != KFD_IOC_CACHE_POLICY_NONCOHERENT) { + return -EINVAL; + } + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + if (!pdd) { + pr_debug("Could not find gpu id 0x%x\n", args->gpu_id); + err = -EINVAL; + goto err_pdd; + } + + pdd = kfd_bind_process_to_device(pdd->dev, p); + if (IS_ERR(pdd)) { + err = -ESRCH; + goto out; + } + + default_policy = (args->default_policy == KFD_IOC_CACHE_POLICY_COHERENT) + ? cache_policy_coherent : cache_policy_noncoherent; + + alternate_policy = + (args->alternate_policy == KFD_IOC_CACHE_POLICY_COHERENT) + ? cache_policy_coherent : cache_policy_noncoherent; + + if (!pdd->dev->dqm->ops.set_cache_memory_policy(pdd->dev->dqm, + &pdd->qpd, + default_policy, + alternate_policy, + (void __user *)args->alternate_aperture_base, + args->alternate_aperture_size)) + err = -EINVAL; + +out: +err_pdd: + mutex_unlock(&p->mutex); + + return err; +} + +static int kfd_ioctl_set_trap_handler(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_set_trap_handler_args *args = data; + int err = 0; + struct kfd_process_device *pdd; + + mutex_lock(&p->mutex); + + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + if (!pdd) { + err = -EINVAL; + goto err_pdd; + } + + pdd = kfd_bind_process_to_device(pdd->dev, p); + if (IS_ERR(pdd)) { + err = -ESRCH; + goto out; + } + + kfd_process_set_trap_handler(&pdd->qpd, args->tba_addr, args->tma_addr); + +out: +err_pdd: + mutex_unlock(&p->mutex); + + return err; +} + +static int kfd_ioctl_dbg_register(struct file *filep, + struct kfd_process *p, void *data) +{ + return -EPERM; +} + +static int kfd_ioctl_dbg_unregister(struct file *filep, + struct kfd_process *p, void *data) +{ + return -EPERM; +} + +static int kfd_ioctl_dbg_address_watch(struct file *filep, + struct kfd_process *p, void *data) +{ + return -EPERM; +} + +/* Parse and generate fixed size data structure for wave control */ +static int kfd_ioctl_dbg_wave_control(struct file *filep, + struct kfd_process *p, void *data) +{ + return -EPERM; +} + +static int kfd_ioctl_get_clock_counters(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_get_clock_counters_args *args = data; + struct kfd_process_device *pdd; + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + mutex_unlock(&p->mutex); + if (pdd) + /* Reading GPU clock counter from KGD */ + args->gpu_clock_counter = amdgpu_amdkfd_get_gpu_clock_counter(pdd->dev->adev); + else + /* Node without GPU resource */ + args->gpu_clock_counter = 0; + + /* No access to rdtsc. Using raw monotonic time */ + args->cpu_clock_counter = ktime_get_raw_ns(); + args->system_clock_counter = ktime_get_boottime_ns(); + + /* Since the counter is in nano-seconds we use 1GHz frequency */ + args->system_clock_freq = 1000000000; + + return 0; +} + + +static int kfd_ioctl_get_process_apertures(struct file *filp, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_get_process_apertures_args *args = data; + struct kfd_process_device_apertures *pAperture; + int i; + + dev_dbg(kfd_device, "get apertures for PASID 0x%x", p->pasid); + + args->num_of_nodes = 0; + + mutex_lock(&p->mutex); + /* Run over all pdd of the process */ + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + + pAperture = + &args->process_apertures[args->num_of_nodes]; + pAperture->gpu_id = pdd->dev->id; + pAperture->lds_base = pdd->lds_base; + pAperture->lds_limit = pdd->lds_limit; + pAperture->gpuvm_base = pdd->gpuvm_base; + pAperture->gpuvm_limit = pdd->gpuvm_limit; + pAperture->scratch_base = pdd->scratch_base; + pAperture->scratch_limit = pdd->scratch_limit; + + dev_dbg(kfd_device, + "node id %u\n", args->num_of_nodes); + dev_dbg(kfd_device, + "gpu id %u\n", pdd->dev->id); + dev_dbg(kfd_device, + "lds_base %llX\n", pdd->lds_base); + dev_dbg(kfd_device, + "lds_limit %llX\n", pdd->lds_limit); + dev_dbg(kfd_device, + "gpuvm_base %llX\n", pdd->gpuvm_base); + dev_dbg(kfd_device, + "gpuvm_limit %llX\n", pdd->gpuvm_limit); + dev_dbg(kfd_device, + "scratch_base %llX\n", pdd->scratch_base); + dev_dbg(kfd_device, + "scratch_limit %llX\n", pdd->scratch_limit); + + if (++args->num_of_nodes >= NUM_OF_SUPPORTED_GPUS) + break; + } + mutex_unlock(&p->mutex); + + return 0; +} + +static int kfd_ioctl_get_process_apertures_new(struct file *filp, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_get_process_apertures_new_args *args = data; + struct kfd_process_device_apertures *pa; + int ret; + int i; + + dev_dbg(kfd_device, "get apertures for PASID 0x%x", p->pasid); + + if (args->num_of_nodes == 0) { + /* Return number of nodes, so that user space can alloacate + * sufficient memory + */ + mutex_lock(&p->mutex); + args->num_of_nodes = p->n_pdds; + goto out_unlock; + } + + /* Fill in process-aperture information for all available + * nodes, but not more than args->num_of_nodes as that is + * the amount of memory allocated by user + */ + pa = kzalloc((sizeof(struct kfd_process_device_apertures) * + args->num_of_nodes), GFP_KERNEL); + if (!pa) + return -ENOMEM; + + mutex_lock(&p->mutex); + + if (!p->n_pdds) { + args->num_of_nodes = 0; + kfree(pa); + goto out_unlock; + } + + /* Run over all pdd of the process */ + for (i = 0; i < min(p->n_pdds, args->num_of_nodes); i++) { + struct kfd_process_device *pdd = p->pdds[i]; + + pa[i].gpu_id = pdd->dev->id; + pa[i].lds_base = pdd->lds_base; + pa[i].lds_limit = pdd->lds_limit; + pa[i].gpuvm_base = pdd->gpuvm_base; + pa[i].gpuvm_limit = pdd->gpuvm_limit; + pa[i].scratch_base = pdd->scratch_base; + pa[i].scratch_limit = pdd->scratch_limit; + + dev_dbg(kfd_device, + "gpu id %u\n", pdd->dev->id); + dev_dbg(kfd_device, + "lds_base %llX\n", pdd->lds_base); + dev_dbg(kfd_device, + "lds_limit %llX\n", pdd->lds_limit); + dev_dbg(kfd_device, + "gpuvm_base %llX\n", pdd->gpuvm_base); + dev_dbg(kfd_device, + "gpuvm_limit %llX\n", pdd->gpuvm_limit); + dev_dbg(kfd_device, + "scratch_base %llX\n", pdd->scratch_base); + dev_dbg(kfd_device, + "scratch_limit %llX\n", pdd->scratch_limit); + } + mutex_unlock(&p->mutex); + + args->num_of_nodes = i; + ret = copy_to_user( + (void __user *)args->kfd_process_device_apertures_ptr, + pa, + (i * sizeof(struct kfd_process_device_apertures))); + kfree(pa); + return ret ? -EFAULT : 0; + +out_unlock: + mutex_unlock(&p->mutex); + return 0; +} + +static int kfd_ioctl_create_event(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_create_event_args *args = data; + int err; + + /* For dGPUs the event page is allocated in user mode. The + * handle is passed to KFD with the first call to this IOCTL + * through the event_page_offset field. + */ + if (args->event_page_offset) { + mutex_lock(&p->mutex); + err = kfd_kmap_event_page(p, args->event_page_offset); + mutex_unlock(&p->mutex); + if (err) + return err; + } + + err = kfd_event_create(filp, p, args->event_type, + args->auto_reset != 0, args->node_id, + &args->event_id, &args->event_trigger_data, + &args->event_page_offset, + &args->event_slot_index); + + pr_debug("Created event (id:0x%08x) (%s)\n", args->event_id, __func__); + return err; +} + +static int kfd_ioctl_destroy_event(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_destroy_event_args *args = data; + + return kfd_event_destroy(p, args->event_id); +} + +static int kfd_ioctl_set_event(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_set_event_args *args = data; + + return kfd_set_event(p, args->event_id); +} + +static int kfd_ioctl_reset_event(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_reset_event_args *args = data; + + return kfd_reset_event(p, args->event_id); +} + +static int kfd_ioctl_wait_events(struct file *filp, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_wait_events_args *args = data; + + return kfd_wait_on_events(p, args->num_events, + (void __user *)args->events_ptr, + (args->wait_for_all != 0), + &args->timeout, &args->wait_result); +} +static int kfd_ioctl_set_scratch_backing_va(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_set_scratch_backing_va_args *args = data; + struct kfd_process_device *pdd; + struct kfd_node *dev; + long err; + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + if (!pdd) { + err = -EINVAL; + goto err_pdd; + } + dev = pdd->dev; + + pdd = kfd_bind_process_to_device(dev, p); + if (IS_ERR(pdd)) { + err = PTR_ERR(pdd); + goto bind_process_to_device_fail; + } + + pdd->qpd.sh_hidden_private_base = args->va_addr; + + mutex_unlock(&p->mutex); + + if (dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS && + pdd->qpd.vmid != 0 && dev->kfd2kgd->set_scratch_backing_va) + dev->kfd2kgd->set_scratch_backing_va( + dev->adev, args->va_addr, pdd->qpd.vmid); + + return 0; + +bind_process_to_device_fail: +err_pdd: + mutex_unlock(&p->mutex); + return err; +} + +static int kfd_ioctl_get_tile_config(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_get_tile_config_args *args = data; + struct kfd_process_device *pdd; + struct tile_config config; + int err = 0; + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + mutex_unlock(&p->mutex); + if (!pdd) + return -EINVAL; + + amdgpu_amdkfd_get_tile_config(pdd->dev->adev, &config); + + args->gb_addr_config = config.gb_addr_config; + args->num_banks = config.num_banks; + args->num_ranks = config.num_ranks; + + if (args->num_tile_configs > config.num_tile_configs) + args->num_tile_configs = config.num_tile_configs; + err = copy_to_user((void __user *)args->tile_config_ptr, + config.tile_config_ptr, + args->num_tile_configs * sizeof(uint32_t)); + if (err) { + args->num_tile_configs = 0; + return -EFAULT; + } + + if (args->num_macro_tile_configs > config.num_macro_tile_configs) + args->num_macro_tile_configs = + config.num_macro_tile_configs; + err = copy_to_user((void __user *)args->macro_tile_config_ptr, + config.macro_tile_config_ptr, + args->num_macro_tile_configs * sizeof(uint32_t)); + if (err) { + args->num_macro_tile_configs = 0; + return -EFAULT; + } + + return 0; +} + +static int kfd_ioctl_acquire_vm(struct file *filep, struct kfd_process *p, + void *data) +{ + struct kfd_ioctl_acquire_vm_args *args = data; + struct kfd_process_device *pdd; + struct file *drm_file; + int ret; + + drm_file = fget(args->drm_fd); + if (!drm_file) + return -EINVAL; + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + if (!pdd) { + ret = -EINVAL; + goto err_pdd; + } + + if (pdd->drm_file) { + ret = pdd->drm_file == drm_file ? 0 : -EBUSY; + goto err_drm_file; + } + + ret = kfd_process_device_init_vm(pdd, drm_file); + if (ret) + goto err_unlock; + + /* On success, the PDD keeps the drm_file reference */ + mutex_unlock(&p->mutex); + + return 0; + +err_unlock: +err_pdd: +err_drm_file: + mutex_unlock(&p->mutex); + fput(drm_file); + return ret; +} + +bool kfd_dev_is_large_bar(struct kfd_node *dev) +{ + if (debug_largebar) { + pr_debug("Simulate large-bar allocation on non large-bar machine\n"); + return true; + } + + if (dev->local_mem_info.local_mem_size_private == 0 && + dev->local_mem_info.local_mem_size_public > 0) + return true; + + if (dev->local_mem_info.local_mem_size_public == 0 && + dev->kfd->adev->gmc.is_app_apu) { + pr_debug("APP APU, Consider like a large bar system\n"); + return true; + } + + return false; +} + +static int kfd_ioctl_get_available_memory(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_get_available_memory_args *args = data; + struct kfd_process_device *pdd = kfd_lock_pdd_by_id(p, args->gpu_id); + + if (!pdd) + return -EINVAL; + args->available = amdgpu_amdkfd_get_available_memory(pdd->dev->adev, + pdd->dev->node_id); + kfd_unlock_pdd(pdd); + return 0; +} + +static int kfd_ioctl_alloc_memory_of_gpu(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_alloc_memory_of_gpu_args *args = data; + struct kfd_process_device *pdd; + void *mem; + struct kfd_node *dev; + int idr_handle; + long err; + uint64_t offset = args->mmap_offset; + uint32_t flags = args->flags; + + if (args->size == 0) + return -EINVAL; + +#if IS_ENABLED(CONFIG_HSA_AMD_SVM) + /* Flush pending deferred work to avoid racing with deferred actions + * from previous memory map changes (e.g. munmap). + */ + svm_range_list_lock_and_flush_work(&p->svms, current->mm); + mutex_lock(&p->svms.lock); + mmap_write_unlock(current->mm); + if (interval_tree_iter_first(&p->svms.objects, + args->va_addr >> PAGE_SHIFT, + (args->va_addr + args->size - 1) >> PAGE_SHIFT)) { + pr_err("Address: 0x%llx already allocated by SVM\n", + args->va_addr); + mutex_unlock(&p->svms.lock); + return -EADDRINUSE; + } + + /* When register user buffer check if it has been registered by svm by + * buffer cpu virtual address. + */ + if ((flags & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) && + interval_tree_iter_first(&p->svms.objects, + args->mmap_offset >> PAGE_SHIFT, + (args->mmap_offset + args->size - 1) >> PAGE_SHIFT)) { + pr_err("User Buffer Address: 0x%llx already allocated by SVM\n", + args->mmap_offset); + mutex_unlock(&p->svms.lock); + return -EADDRINUSE; + } + + mutex_unlock(&p->svms.lock); +#endif + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + if (!pdd) { + err = -EINVAL; + goto err_pdd; + } + + dev = pdd->dev; + + if ((flags & KFD_IOC_ALLOC_MEM_FLAGS_PUBLIC) && + (flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) && + !kfd_dev_is_large_bar(dev)) { + pr_err("Alloc host visible vram on small bar is not allowed\n"); + err = -EINVAL; + goto err_large_bar; + } + + pdd = kfd_bind_process_to_device(dev, p); + if (IS_ERR(pdd)) { + err = PTR_ERR(pdd); + goto err_unlock; + } + + if (flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) { + if (args->size != kfd_doorbell_process_slice(dev->kfd)) { + err = -EINVAL; + goto err_unlock; + } + offset = kfd_get_process_doorbells(pdd); + if (!offset) { + err = -ENOMEM; + goto err_unlock; + } + } else if (flags & KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP) { + if (args->size != PAGE_SIZE) { + err = -EINVAL; + goto err_unlock; + } + offset = dev->adev->rmmio_remap.bus_addr; + if (!offset) { + err = -ENOMEM; + goto err_unlock; + } + } + + err = amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu( + dev->adev, args->va_addr, args->size, + pdd->drm_priv, (struct kgd_mem **) &mem, &offset, + flags, false); + + if (err) + goto err_unlock; + + idr_handle = kfd_process_device_create_obj_handle(pdd, mem); + if (idr_handle < 0) { + err = -EFAULT; + goto err_free; + } + + /* Update the VRAM usage count */ + if (flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) { + uint64_t size = args->size; + + if (flags & KFD_IOC_ALLOC_MEM_FLAGS_AQL_QUEUE_MEM) + size >>= 1; + WRITE_ONCE(pdd->vram_usage, pdd->vram_usage + PAGE_ALIGN(size)); + } + + mutex_unlock(&p->mutex); + + args->handle = MAKE_HANDLE(args->gpu_id, idr_handle); + args->mmap_offset = offset; + + /* MMIO is mapped through kfd device + * Generate a kfd mmap offset + */ + if (flags & KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP) + args->mmap_offset = KFD_MMAP_TYPE_MMIO + | KFD_MMAP_GPU_ID(args->gpu_id); + + return 0; + +err_free: + amdgpu_amdkfd_gpuvm_free_memory_of_gpu(dev->adev, (struct kgd_mem *)mem, + pdd->drm_priv, NULL); +err_unlock: +err_pdd: +err_large_bar: + mutex_unlock(&p->mutex); + return err; +} + +static int kfd_ioctl_free_memory_of_gpu(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_free_memory_of_gpu_args *args = data; + struct kfd_process_device *pdd; + void *mem; + int ret; + uint64_t size = 0; + + mutex_lock(&p->mutex); + /* + * Safeguard to prevent user space from freeing signal BO. + * It will be freed at process termination. + */ + if (p->signal_handle && (p->signal_handle == args->handle)) { + pr_err("Free signal BO is not allowed\n"); + ret = -EPERM; + goto err_unlock; + } + + pdd = kfd_process_device_data_by_id(p, GET_GPU_ID(args->handle)); + if (!pdd) { + pr_err("Process device data doesn't exist\n"); + ret = -EINVAL; + goto err_pdd; + } + + mem = kfd_process_device_translate_handle( + pdd, GET_IDR_HANDLE(args->handle)); + if (!mem) { + ret = -EINVAL; + goto err_unlock; + } + + ret = amdgpu_amdkfd_gpuvm_free_memory_of_gpu(pdd->dev->adev, + (struct kgd_mem *)mem, pdd->drm_priv, &size); + + /* If freeing the buffer failed, leave the handle in place for + * clean-up during process tear-down. + */ + if (!ret) + kfd_process_device_remove_obj_handle( + pdd, GET_IDR_HANDLE(args->handle)); + + WRITE_ONCE(pdd->vram_usage, pdd->vram_usage - size); + +err_unlock: +err_pdd: + mutex_unlock(&p->mutex); + return ret; +} + +static int kfd_ioctl_map_memory_to_gpu(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_map_memory_to_gpu_args *args = data; + struct kfd_process_device *pdd, *peer_pdd; + void *mem; + struct kfd_node *dev; + long err = 0; + int i; + uint32_t *devices_arr = NULL; + + if (!args->n_devices) { + pr_debug("Device IDs array empty\n"); + return -EINVAL; + } + if (args->n_success > args->n_devices) { + pr_debug("n_success exceeds n_devices\n"); + return -EINVAL; + } + + devices_arr = kmalloc_array(args->n_devices, sizeof(*devices_arr), + GFP_KERNEL); + if (!devices_arr) + return -ENOMEM; + + err = copy_from_user(devices_arr, + (void __user *)args->device_ids_array_ptr, + args->n_devices * sizeof(*devices_arr)); + if (err != 0) { + err = -EFAULT; + goto copy_from_user_failed; + } + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, GET_GPU_ID(args->handle)); + if (!pdd) { + err = -EINVAL; + goto get_process_device_data_failed; + } + dev = pdd->dev; + + pdd = kfd_bind_process_to_device(dev, p); + if (IS_ERR(pdd)) { + err = PTR_ERR(pdd); + goto bind_process_to_device_failed; + } + + mem = kfd_process_device_translate_handle(pdd, + GET_IDR_HANDLE(args->handle)); + if (!mem) { + err = -ENOMEM; + goto get_mem_obj_from_handle_failed; + } + + for (i = args->n_success; i < args->n_devices; i++) { + peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]); + if (!peer_pdd) { + pr_debug("Getting device by id failed for 0x%x\n", + devices_arr[i]); + err = -EINVAL; + goto get_mem_obj_from_handle_failed; + } + + peer_pdd = kfd_bind_process_to_device(peer_pdd->dev, p); + if (IS_ERR(peer_pdd)) { + err = PTR_ERR(peer_pdd); + goto get_mem_obj_from_handle_failed; + } + + err = amdgpu_amdkfd_gpuvm_map_memory_to_gpu( + peer_pdd->dev->adev, (struct kgd_mem *)mem, + peer_pdd->drm_priv); + if (err) { + struct pci_dev *pdev = peer_pdd->dev->adev->pdev; + + dev_err(dev->adev->dev, + "Failed to map peer:%04x:%02x:%02x.%d mem_domain:%d\n", + pci_domain_nr(pdev->bus), + pdev->bus->number, + PCI_SLOT(pdev->devfn), + PCI_FUNC(pdev->devfn), + ((struct kgd_mem *)mem)->domain); + goto map_memory_to_gpu_failed; + } + args->n_success = i+1; + } + + err = amdgpu_amdkfd_gpuvm_sync_memory(dev->adev, (struct kgd_mem *) mem, true); + if (err) { + pr_debug("Sync memory failed, wait interrupted by user signal\n"); + goto sync_memory_failed; + } + + mutex_unlock(&p->mutex); + + /* Flush TLBs after waiting for the page table updates to complete */ + for (i = 0; i < args->n_devices; i++) { + peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]); + if (WARN_ON_ONCE(!peer_pdd)) + continue; + kfd_flush_tlb(peer_pdd, TLB_FLUSH_LEGACY); + } + kfree(devices_arr); + + return err; + +get_process_device_data_failed: +bind_process_to_device_failed: +get_mem_obj_from_handle_failed: +map_memory_to_gpu_failed: +sync_memory_failed: + mutex_unlock(&p->mutex); +copy_from_user_failed: + kfree(devices_arr); + + return err; +} + +static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_unmap_memory_from_gpu_args *args = data; + struct kfd_process_device *pdd, *peer_pdd; + void *mem; + long err = 0; + uint32_t *devices_arr = NULL, i; + bool flush_tlb; + + if (!args->n_devices) { + pr_debug("Device IDs array empty\n"); + return -EINVAL; + } + if (args->n_success > args->n_devices) { + pr_debug("n_success exceeds n_devices\n"); + return -EINVAL; + } + + devices_arr = kmalloc_array(args->n_devices, sizeof(*devices_arr), + GFP_KERNEL); + if (!devices_arr) + return -ENOMEM; + + err = copy_from_user(devices_arr, + (void __user *)args->device_ids_array_ptr, + args->n_devices * sizeof(*devices_arr)); + if (err != 0) { + err = -EFAULT; + goto copy_from_user_failed; + } + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, GET_GPU_ID(args->handle)); + if (!pdd) { + err = -EINVAL; + goto bind_process_to_device_failed; + } + + mem = kfd_process_device_translate_handle(pdd, + GET_IDR_HANDLE(args->handle)); + if (!mem) { + err = -ENOMEM; + goto get_mem_obj_from_handle_failed; + } + + for (i = args->n_success; i < args->n_devices; i++) { + peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]); + if (!peer_pdd) { + err = -EINVAL; + goto get_mem_obj_from_handle_failed; + } + err = amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu( + peer_pdd->dev->adev, (struct kgd_mem *)mem, peer_pdd->drm_priv); + if (err) { + pr_err("Failed to unmap from gpu %d/%d\n", + i, args->n_devices); + goto unmap_memory_from_gpu_failed; + } + args->n_success = i+1; + } + + flush_tlb = kfd_flush_tlb_after_unmap(pdd->dev->kfd); + if (flush_tlb) { + err = amdgpu_amdkfd_gpuvm_sync_memory(pdd->dev->adev, + (struct kgd_mem *) mem, true); + if (err) { + pr_debug("Sync memory failed, wait interrupted by user signal\n"); + goto sync_memory_failed; + } + } + mutex_unlock(&p->mutex); + + if (flush_tlb) { + /* Flush TLBs after waiting for the page table updates to complete */ + for (i = 0; i < args->n_devices; i++) { + peer_pdd = kfd_process_device_data_by_id(p, devices_arr[i]); + if (WARN_ON_ONCE(!peer_pdd)) + continue; + kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT); + } + } + kfree(devices_arr); + + return 0; + +bind_process_to_device_failed: +get_mem_obj_from_handle_failed: +unmap_memory_from_gpu_failed: +sync_memory_failed: + mutex_unlock(&p->mutex); +copy_from_user_failed: + kfree(devices_arr); + return err; +} + +static int kfd_ioctl_alloc_queue_gws(struct file *filep, + struct kfd_process *p, void *data) +{ + int retval; + struct kfd_ioctl_alloc_queue_gws_args *args = data; + struct queue *q; + struct kfd_node *dev; + + mutex_lock(&p->mutex); + q = pqm_get_user_queue(&p->pqm, args->queue_id); + + if (q) { + dev = q->device; + } else { + retval = -EINVAL; + goto out_unlock; + } + + if (!dev->gws) { + retval = -ENODEV; + goto out_unlock; + } + + if (dev->dqm->sched_policy == KFD_SCHED_POLICY_NO_HWS) { + retval = -ENODEV; + goto out_unlock; + } + + if (p->debug_trap_enabled && (!kfd_dbg_has_gws_support(dev) || + kfd_dbg_has_cwsr_workaround(dev))) { + retval = -EBUSY; + goto out_unlock; + } + + retval = pqm_set_gws(&p->pqm, args->queue_id, args->num_gws ? dev->gws : NULL); + mutex_unlock(&p->mutex); + + args->first_gws = 0; + return retval; + +out_unlock: + mutex_unlock(&p->mutex); + return retval; +} + +static int kfd_ioctl_get_dmabuf_info(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_get_dmabuf_info_args *args = data; + struct kfd_node *dev = NULL; + struct amdgpu_device *dmabuf_adev; + void *metadata_buffer = NULL; + uint32_t flags; + int8_t xcp_id; + unsigned int i; + int r; + + /* Find a KFD GPU device that supports the get_dmabuf_info query */ + for (i = 0; kfd_topology_enum_kfd_devices(i, &dev) == 0; i++) + if (dev) + break; + if (!dev) + return -EINVAL; + + if (args->metadata_ptr) { + metadata_buffer = kzalloc(args->metadata_size, GFP_KERNEL); + if (!metadata_buffer) + return -ENOMEM; + } + + /* Get dmabuf info from KGD */ + r = amdgpu_amdkfd_get_dmabuf_info(dev->adev, args->dmabuf_fd, + &dmabuf_adev, &args->size, + metadata_buffer, args->metadata_size, + &args->metadata_size, &flags, &xcp_id); + if (r) + goto exit; + + if (xcp_id >= 0) + args->gpu_id = dmabuf_adev->kfd.dev->nodes[xcp_id]->id; + else + args->gpu_id = dmabuf_adev->kfd.dev->nodes[0]->id; + args->flags = flags; + + /* Copy metadata buffer to user mode */ + if (metadata_buffer) { + r = copy_to_user((void __user *)args->metadata_ptr, + metadata_buffer, args->metadata_size); + if (r != 0) + r = -EFAULT; + } + +exit: + kfree(metadata_buffer); + + return r; +} + +static int kfd_ioctl_import_dmabuf(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_import_dmabuf_args *args = data; + struct kfd_process_device *pdd; + struct dma_buf *dmabuf; + int idr_handle; + uint64_t size; + void *mem; + int r; + + dmabuf = dma_buf_get(args->dmabuf_fd); + if (IS_ERR(dmabuf)) + return PTR_ERR(dmabuf); + + mutex_lock(&p->mutex); + pdd = kfd_process_device_data_by_id(p, args->gpu_id); + if (!pdd) { + r = -EINVAL; + goto err_unlock; + } + + pdd = kfd_bind_process_to_device(pdd->dev, p); + if (IS_ERR(pdd)) { + r = PTR_ERR(pdd); + goto err_unlock; + } + + r = amdgpu_amdkfd_gpuvm_import_dmabuf(pdd->dev->adev, dmabuf, + args->va_addr, pdd->drm_priv, + (struct kgd_mem **)&mem, &size, + NULL); + if (r) + goto err_unlock; + + idr_handle = kfd_process_device_create_obj_handle(pdd, mem); + if (idr_handle < 0) { + r = -EFAULT; + goto err_free; + } + + mutex_unlock(&p->mutex); + dma_buf_put(dmabuf); + + args->handle = MAKE_HANDLE(args->gpu_id, idr_handle); + + return 0; + +err_free: + amdgpu_amdkfd_gpuvm_free_memory_of_gpu(pdd->dev->adev, (struct kgd_mem *)mem, + pdd->drm_priv, NULL); +err_unlock: + mutex_unlock(&p->mutex); + dma_buf_put(dmabuf); + return r; +} + +static int kfd_ioctl_export_dmabuf(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_export_dmabuf_args *args = data; + struct kfd_process_device *pdd; + struct dma_buf *dmabuf; + struct kfd_node *dev; + void *mem; + int ret = 0; + + dev = kfd_device_by_id(GET_GPU_ID(args->handle)); + if (!dev) + return -EINVAL; + + mutex_lock(&p->mutex); + + pdd = kfd_get_process_device_data(dev, p); + if (!pdd) { + ret = -EINVAL; + goto err_unlock; + } + + mem = kfd_process_device_translate_handle(pdd, + GET_IDR_HANDLE(args->handle)); + if (!mem) { + ret = -EINVAL; + goto err_unlock; + } + + ret = amdgpu_amdkfd_gpuvm_export_dmabuf(mem, &dmabuf); + mutex_unlock(&p->mutex); + if (ret) + goto err_out; + + ret = dma_buf_fd(dmabuf, args->flags); + if (ret < 0) { + dma_buf_put(dmabuf); + goto err_out; + } + /* dma_buf_fd assigns the reference count to the fd, no need to + * put the reference here. + */ + args->dmabuf_fd = ret; + + return 0; + +err_unlock: + mutex_unlock(&p->mutex); +err_out: + return ret; +} + +/* Handle requests for watching SMI events */ +static int kfd_ioctl_smi_events(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_smi_events_args *args = data; + struct kfd_process_device *pdd; + + mutex_lock(&p->mutex); + + pdd = kfd_process_device_data_by_id(p, args->gpuid); + mutex_unlock(&p->mutex); + if (!pdd) + return -EINVAL; + + return kfd_smi_event_open(pdd->dev, &args->anon_fd); +} + +#if IS_ENABLED(CONFIG_HSA_AMD_SVM) + +static int kfd_ioctl_set_xnack_mode(struct file *filep, + struct kfd_process *p, void *data) +{ + struct kfd_ioctl_set_xnack_mode_args *args = data; + int r = 0; + + mutex_lock(&p->mutex); + if (args->xnack_enabled >= 0) { + if (!list_empty(&p->pqm.queues)) { + pr_debug("Process has user queues running\n"); + r = -EBUSY; + goto out_unlock; + } + + if (p->xnack_enabled == args->xnack_enabled) + goto out_unlock; + + if (args->xnack_enabled && !kfd_process_xnack_mode(p, true)) { + r = -EPERM; + goto out_unlock; + } + + r = svm_range_switch_xnack_reserve_mem(p, args->xnack_enabled); + } else { + args->xnack_enabled = p->xnack_enabled; + } + +out_unlock: + mutex_unlock(&p->mutex); + + return r; +} + +static int kfd_ioctl_svm(struct file *filep, struct kfd_process *p, void *data) +{ + struct kfd_ioctl_svm_args *args = data; + int r = 0; + + pr_debug("start 0x%llx size 0x%llx op 0x%x nattr 0x%x\n", + args->start_addr, args->size, args->op, args->nattr); + + if ((args->start_addr & ~PAGE_MASK) || (args->size & ~PAGE_MASK)) + return -EINVAL; + if (!args->start_addr || !args->size) + return -EINVAL; + + r = svm_ioctl(p, args->op, args->start_addr, args->size, args->nattr, + args->attrs); + + return r; +} +#else +static int kfd_ioctl_set_xnack_mode(struct file *filep, + struct kfd_process *p, void *data) +{ + return -EPERM; +} +static int kfd_ioctl_svm(struct file *filep, struct kfd_process *p, void *data) +{ + return -EPERM; +} +#endif + +static int criu_checkpoint_process(struct kfd_process *p, + uint8_t __user *user_priv_data, + uint64_t *priv_offset) +{ + struct kfd_criu_process_priv_data process_priv; + int ret; + + memset(&process_priv, 0, sizeof(process_priv)); + + process_priv.version = KFD_CRIU_PRIV_VERSION; + /* For CR, we don't consider negative xnack mode which is used for + * querying without changing it, here 0 simply means disabled and 1 + * means enabled so retry for finding a valid PTE. + */ + process_priv.xnack_mode = p->xnack_enabled ? 1 : 0; + + ret = copy_to_user(user_priv_data + *priv_offset, + &process_priv, sizeof(process_priv)); + + if (ret) { + pr_err("Failed to copy process information to user\n"); + ret = -EFAULT; + } + + *priv_offset += sizeof(process_priv); + return ret; +} + +static int criu_checkpoint_devices(struct kfd_process *p, + uint32_t num_devices, + uint8_t __user *user_addr, + uint8_t __user *user_priv_data, + uint64_t *priv_offset) +{ + struct kfd_criu_device_priv_data *device_priv = NULL; + struct kfd_criu_device_bucket *device_buckets = NULL; + int ret = 0, i; + + device_buckets = kvzalloc(num_devices * sizeof(*device_buckets), GFP_KERNEL); + if (!device_buckets) { + ret = -ENOMEM; + goto exit; + } + + device_priv = kvzalloc(num_devices * sizeof(*device_priv), GFP_KERNEL); + if (!device_priv) { + ret = -ENOMEM; + goto exit; + } + + for (i = 0; i < num_devices; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + + device_buckets[i].user_gpu_id = pdd->user_gpu_id; + device_buckets[i].actual_gpu_id = pdd->dev->id; + + /* + * priv_data does not contain useful information for now and is reserved for + * future use, so we do not set its contents. + */ + } + + ret = copy_to_user(user_addr, device_buckets, num_devices * sizeof(*device_buckets)); + if (ret) { + pr_err("Failed to copy device information to user\n"); + ret = -EFAULT; + goto exit; + } + + ret = copy_to_user(user_priv_data + *priv_offset, + device_priv, + num_devices * sizeof(*device_priv)); + if (ret) { + pr_err("Failed to copy device information to user\n"); + ret = -EFAULT; + } + *priv_offset += num_devices * sizeof(*device_priv); + +exit: + kvfree(device_buckets); + kvfree(device_priv); + return ret; +} + +static uint32_t get_process_num_bos(struct kfd_process *p) +{ + uint32_t num_of_bos = 0; + int i; + + /* Run over all PDDs of the process */ + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + void *mem; + int id; + + idr_for_each_entry(&pdd->alloc_idr, mem, id) { + struct kgd_mem *kgd_mem = (struct kgd_mem *)mem; + + if (!kgd_mem->va || kgd_mem->va > pdd->gpuvm_base) + num_of_bos++; + } + } + return num_of_bos; +} + +static int criu_get_prime_handle(struct kgd_mem *mem, int flags, + u32 *shared_fd) +{ + struct dma_buf *dmabuf; + int ret; + + ret = amdgpu_amdkfd_gpuvm_export_dmabuf(mem, &dmabuf); + if (ret) { + pr_err("dmabuf export failed for the BO\n"); + return ret; + } + + ret = dma_buf_fd(dmabuf, flags); + if (ret < 0) { + pr_err("dmabuf create fd failed, ret:%d\n", ret); + goto out_free_dmabuf; + } + + *shared_fd = ret; + return 0; + +out_free_dmabuf: + dma_buf_put(dmabuf); + return ret; +} + +static int criu_checkpoint_bos(struct kfd_process *p, + uint32_t num_bos, + uint8_t __user *user_bos, + uint8_t __user *user_priv_data, + uint64_t *priv_offset) +{ + struct kfd_criu_bo_bucket *bo_buckets; + struct kfd_criu_bo_priv_data *bo_privs; + int ret = 0, pdd_index, bo_index = 0, id; + void *mem; + + bo_buckets = kvzalloc(num_bos * sizeof(*bo_buckets), GFP_KERNEL); + if (!bo_buckets) + return -ENOMEM; + + bo_privs = kvzalloc(num_bos * sizeof(*bo_privs), GFP_KERNEL); + if (!bo_privs) { + ret = -ENOMEM; + goto exit; + } + + for (pdd_index = 0; pdd_index < p->n_pdds; pdd_index++) { + struct kfd_process_device *pdd = p->pdds[pdd_index]; + struct amdgpu_bo *dumper_bo; + struct kgd_mem *kgd_mem; + + idr_for_each_entry(&pdd->alloc_idr, mem, id) { + struct kfd_criu_bo_bucket *bo_bucket; + struct kfd_criu_bo_priv_data *bo_priv; + int i, dev_idx = 0; + + if (!mem) { + ret = -ENOMEM; + goto exit; + } + + kgd_mem = (struct kgd_mem *)mem; + dumper_bo = kgd_mem->bo; + + /* Skip checkpointing BOs that are used for Trap handler + * code and state. Currently, these BOs have a VA that + * is less GPUVM Base + */ + if (kgd_mem->va && kgd_mem->va <= pdd->gpuvm_base) + continue; + + bo_bucket = &bo_buckets[bo_index]; + bo_priv = &bo_privs[bo_index]; + + bo_bucket->gpu_id = pdd->user_gpu_id; + bo_bucket->addr = (uint64_t)kgd_mem->va; + bo_bucket->size = amdgpu_bo_size(dumper_bo); + bo_bucket->alloc_flags = (uint32_t)kgd_mem->alloc_flags; + bo_priv->idr_handle = id; + + if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) { + ret = amdgpu_ttm_tt_get_userptr(&dumper_bo->tbo, + &bo_priv->user_addr); + if (ret) { + pr_err("Failed to obtain user address for user-pointer bo\n"); + goto exit; + } + } + if (bo_bucket->alloc_flags + & (KFD_IOC_ALLOC_MEM_FLAGS_VRAM | KFD_IOC_ALLOC_MEM_FLAGS_GTT)) { + ret = criu_get_prime_handle(kgd_mem, + bo_bucket->alloc_flags & + KFD_IOC_ALLOC_MEM_FLAGS_WRITABLE ? DRM_RDWR : 0, + &bo_bucket->dmabuf_fd); + if (ret) + goto exit; + } else { + bo_bucket->dmabuf_fd = KFD_INVALID_FD; + } + + if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) + bo_bucket->offset = KFD_MMAP_TYPE_DOORBELL | + KFD_MMAP_GPU_ID(pdd->dev->id); + else if (bo_bucket->alloc_flags & + KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP) + bo_bucket->offset = KFD_MMAP_TYPE_MMIO | + KFD_MMAP_GPU_ID(pdd->dev->id); + else + bo_bucket->offset = amdgpu_bo_mmap_offset(dumper_bo); + + for (i = 0; i < p->n_pdds; i++) { + if (amdgpu_amdkfd_bo_mapped_to_dev(p->pdds[i]->dev->adev, kgd_mem)) + bo_priv->mapped_gpuids[dev_idx++] = p->pdds[i]->user_gpu_id; + } + + pr_debug("bo_size = 0x%llx, bo_addr = 0x%llx bo_offset = 0x%llx\n" + "gpu_id = 0x%x alloc_flags = 0x%x idr_handle = 0x%x", + bo_bucket->size, + bo_bucket->addr, + bo_bucket->offset, + bo_bucket->gpu_id, + bo_bucket->alloc_flags, + bo_priv->idr_handle); + bo_index++; + } + } + + ret = copy_to_user(user_bos, bo_buckets, num_bos * sizeof(*bo_buckets)); + if (ret) { + pr_err("Failed to copy BO information to user\n"); + ret = -EFAULT; + goto exit; + } + + ret = copy_to_user(user_priv_data + *priv_offset, bo_privs, num_bos * sizeof(*bo_privs)); + if (ret) { + pr_err("Failed to copy BO priv information to user\n"); + ret = -EFAULT; + goto exit; + } + + *priv_offset += num_bos * sizeof(*bo_privs); + +exit: + while (ret && bo_index--) { + if (bo_buckets[bo_index].alloc_flags + & (KFD_IOC_ALLOC_MEM_FLAGS_VRAM | KFD_IOC_ALLOC_MEM_FLAGS_GTT)) + close_fd(bo_buckets[bo_index].dmabuf_fd); + } + + kvfree(bo_buckets); + kvfree(bo_privs); + return ret; +} + +static int criu_get_process_object_info(struct kfd_process *p, + uint32_t *num_devices, + uint32_t *num_bos, + uint32_t *num_objects, + uint64_t *objs_priv_size) +{ + uint64_t queues_priv_data_size, svm_priv_data_size, priv_size; + uint32_t num_queues, num_events, num_svm_ranges; + int ret; + + *num_devices = p->n_pdds; + *num_bos = get_process_num_bos(p); + + ret = kfd_process_get_queue_info(p, &num_queues, &queues_priv_data_size); + if (ret) + return ret; + + num_events = kfd_get_num_events(p); + + ret = svm_range_get_info(p, &num_svm_ranges, &svm_priv_data_size); + if (ret) + return ret; + + *num_objects = num_queues + num_events + num_svm_ranges; + + if (objs_priv_size) { + priv_size = sizeof(struct kfd_criu_process_priv_data); + priv_size += *num_devices * sizeof(struct kfd_criu_device_priv_data); + priv_size += *num_bos * sizeof(struct kfd_criu_bo_priv_data); + priv_size += queues_priv_data_size; + priv_size += num_events * sizeof(struct kfd_criu_event_priv_data); + priv_size += svm_priv_data_size; + *objs_priv_size = priv_size; + } + return 0; +} + +static int criu_checkpoint(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args) +{ + int ret; + uint32_t num_devices, num_bos, num_objects; + uint64_t priv_size, priv_offset = 0, bo_priv_offset; + + if (!args->devices || !args->bos || !args->priv_data) + return -EINVAL; + + mutex_lock(&p->mutex); + + if (!p->n_pdds) { + pr_err("No pdd for given process\n"); + ret = -ENODEV; + goto exit_unlock; + } + + /* Confirm all process queues are evicted */ + if (!p->queues_paused) { + pr_err("Cannot dump process when queues are not in evicted state\n"); + /* CRIU plugin did not call op PROCESS_INFO before checkpointing */ + ret = -EINVAL; + goto exit_unlock; + } + + ret = criu_get_process_object_info(p, &num_devices, &num_bos, &num_objects, &priv_size); + if (ret) + goto exit_unlock; + + if (num_devices != args->num_devices || + num_bos != args->num_bos || + num_objects != args->num_objects || + priv_size != args->priv_data_size) { + + ret = -EINVAL; + goto exit_unlock; + } + + /* each function will store private data inside priv_data and adjust priv_offset */ + ret = criu_checkpoint_process(p, (uint8_t __user *)args->priv_data, &priv_offset); + if (ret) + goto exit_unlock; + + ret = criu_checkpoint_devices(p, num_devices, (uint8_t __user *)args->devices, + (uint8_t __user *)args->priv_data, &priv_offset); + if (ret) + goto exit_unlock; + + /* Leave room for BOs in the private data. They need to be restored + * before events, but we checkpoint them last to simplify the error + * handling. + */ + bo_priv_offset = priv_offset; + priv_offset += num_bos * sizeof(struct kfd_criu_bo_priv_data); + + if (num_objects) { + ret = kfd_criu_checkpoint_queues(p, (uint8_t __user *)args->priv_data, + &priv_offset); + if (ret) + goto exit_unlock; + + ret = kfd_criu_checkpoint_events(p, (uint8_t __user *)args->priv_data, + &priv_offset); + if (ret) + goto exit_unlock; + + ret = kfd_criu_checkpoint_svm(p, (uint8_t __user *)args->priv_data, &priv_offset); + if (ret) + goto exit_unlock; + } + + /* This must be the last thing in this function that can fail. + * Otherwise we leak dmabuf file descriptors. + */ + ret = criu_checkpoint_bos(p, num_bos, (uint8_t __user *)args->bos, + (uint8_t __user *)args->priv_data, &bo_priv_offset); + +exit_unlock: + mutex_unlock(&p->mutex); + if (ret) + pr_err("Failed to dump CRIU ret:%d\n", ret); + else + pr_debug("CRIU dump ret:%d\n", ret); + + return ret; +} + +static int criu_restore_process(struct kfd_process *p, + struct kfd_ioctl_criu_args *args, + uint64_t *priv_offset, + uint64_t max_priv_data_size) +{ + int ret = 0; + struct kfd_criu_process_priv_data process_priv; + + if (*priv_offset + sizeof(process_priv) > max_priv_data_size) + return -EINVAL; + + ret = copy_from_user(&process_priv, + (void __user *)(args->priv_data + *priv_offset), + sizeof(process_priv)); + if (ret) { + pr_err("Failed to copy process private information from user\n"); + ret = -EFAULT; + goto exit; + } + *priv_offset += sizeof(process_priv); + + if (process_priv.version != KFD_CRIU_PRIV_VERSION) { + pr_err("Invalid CRIU API version (checkpointed:%d current:%d)\n", + process_priv.version, KFD_CRIU_PRIV_VERSION); + return -EINVAL; + } + + pr_debug("Setting XNACK mode\n"); + if (process_priv.xnack_mode && !kfd_process_xnack_mode(p, true)) { + pr_err("xnack mode cannot be set\n"); + ret = -EPERM; + goto exit; + } else { + pr_debug("set xnack mode: %d\n", process_priv.xnack_mode); + p->xnack_enabled = process_priv.xnack_mode; + } + +exit: + return ret; +} + +static int criu_restore_devices(struct kfd_process *p, + struct kfd_ioctl_criu_args *args, + uint64_t *priv_offset, + uint64_t max_priv_data_size) +{ + struct kfd_criu_device_bucket *device_buckets; + struct kfd_criu_device_priv_data *device_privs; + int ret = 0; + uint32_t i; + + if (args->num_devices != p->n_pdds) + return -EINVAL; + + if (*priv_offset + (args->num_devices * sizeof(*device_privs)) > max_priv_data_size) + return -EINVAL; + + device_buckets = kmalloc_array(args->num_devices, sizeof(*device_buckets), GFP_KERNEL); + if (!device_buckets) + return -ENOMEM; + + ret = copy_from_user(device_buckets, (void __user *)args->devices, + args->num_devices * sizeof(*device_buckets)); + if (ret) { + pr_err("Failed to copy devices buckets from user\n"); + ret = -EFAULT; + goto exit; + } + + for (i = 0; i < args->num_devices; i++) { + struct kfd_node *dev; + struct kfd_process_device *pdd; + struct file *drm_file; + + /* device private data is not currently used */ + + if (!device_buckets[i].user_gpu_id) { + pr_err("Invalid user gpu_id\n"); + ret = -EINVAL; + goto exit; + } + + dev = kfd_device_by_id(device_buckets[i].actual_gpu_id); + if (!dev) { + pr_err("Failed to find device with gpu_id = %x\n", + device_buckets[i].actual_gpu_id); + ret = -EINVAL; + goto exit; + } + + pdd = kfd_get_process_device_data(dev, p); + if (!pdd) { + pr_err("Failed to get pdd for gpu_id = %x\n", + device_buckets[i].actual_gpu_id); + ret = -EINVAL; + goto exit; + } + pdd->user_gpu_id = device_buckets[i].user_gpu_id; + + drm_file = fget(device_buckets[i].drm_fd); + if (!drm_file) { + pr_err("Invalid render node file descriptor sent from plugin (%d)\n", + device_buckets[i].drm_fd); + ret = -EINVAL; + goto exit; + } + + if (pdd->drm_file) { + ret = -EINVAL; + goto exit; + } + + /* create the vm using render nodes for kfd pdd */ + if (kfd_process_device_init_vm(pdd, drm_file)) { + pr_err("could not init vm for given pdd\n"); + /* On success, the PDD keeps the drm_file reference */ + fput(drm_file); + ret = -EINVAL; + goto exit; + } + /* + * pdd now already has the vm bound to render node so below api won't create a new + * exclusive kfd mapping but use existing one with renderDXXX but is still needed + * for iommu v2 binding and runtime pm. + */ + pdd = kfd_bind_process_to_device(dev, p); + if (IS_ERR(pdd)) { + ret = PTR_ERR(pdd); + goto exit; + } + + if (!pdd->qpd.proc_doorbells) { + ret = kfd_alloc_process_doorbells(dev->kfd, pdd); + if (ret) + goto exit; + } + } + + /* + * We are not copying device private data from user as we are not using the data for now, + * but we still adjust for its private data. + */ + *priv_offset += args->num_devices * sizeof(*device_privs); + +exit: + kfree(device_buckets); + return ret; +} + +static int criu_restore_memory_of_gpu(struct kfd_process_device *pdd, + struct kfd_criu_bo_bucket *bo_bucket, + struct kfd_criu_bo_priv_data *bo_priv, + struct kgd_mem **kgd_mem) +{ + int idr_handle; + int ret; + const bool criu_resume = true; + u64 offset; + + if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) { + if (bo_bucket->size != + kfd_doorbell_process_slice(pdd->dev->kfd)) + return -EINVAL; + + offset = kfd_get_process_doorbells(pdd); + if (!offset) + return -ENOMEM; + } else if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP) { + /* MMIO BOs need remapped bus address */ + if (bo_bucket->size != PAGE_SIZE) { + pr_err("Invalid page size\n"); + return -EINVAL; + } + offset = pdd->dev->adev->rmmio_remap.bus_addr; + if (!offset) { + pr_err("amdgpu_amdkfd_get_mmio_remap_phys_addr failed\n"); + return -ENOMEM; + } + } else if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_USERPTR) { + offset = bo_priv->user_addr; + } + /* Create the BO */ + ret = amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(pdd->dev->adev, bo_bucket->addr, + bo_bucket->size, pdd->drm_priv, kgd_mem, + &offset, bo_bucket->alloc_flags, criu_resume); + if (ret) { + pr_err("Could not create the BO\n"); + return ret; + } + pr_debug("New BO created: size:0x%llx addr:0x%llx offset:0x%llx\n", + bo_bucket->size, bo_bucket->addr, offset); + + /* Restore previous IDR handle */ + pr_debug("Restoring old IDR handle for the BO"); + idr_handle = idr_alloc(&pdd->alloc_idr, *kgd_mem, bo_priv->idr_handle, + bo_priv->idr_handle + 1, GFP_KERNEL); + + if (idr_handle < 0) { + pr_err("Could not allocate idr\n"); + amdgpu_amdkfd_gpuvm_free_memory_of_gpu(pdd->dev->adev, *kgd_mem, pdd->drm_priv, + NULL); + return -ENOMEM; + } + + if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL) + bo_bucket->restored_offset = KFD_MMAP_TYPE_DOORBELL | KFD_MMAP_GPU_ID(pdd->dev->id); + if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_MMIO_REMAP) { + bo_bucket->restored_offset = KFD_MMAP_TYPE_MMIO | KFD_MMAP_GPU_ID(pdd->dev->id); + } else if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_GTT) { + bo_bucket->restored_offset = offset; + } else if (bo_bucket->alloc_flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM) { + bo_bucket->restored_offset = offset; + /* Update the VRAM usage count */ + WRITE_ONCE(pdd->vram_usage, pdd->vram_usage + bo_bucket->size); + } + return 0; +} + +static int criu_restore_bo(struct kfd_process *p, + struct kfd_criu_bo_bucket *bo_bucket, + struct kfd_criu_bo_priv_data *bo_priv) +{ + struct kfd_process_device *pdd; + struct kgd_mem *kgd_mem; + int ret; + int j; + + pr_debug("Restoring BO size:0x%llx addr:0x%llx gpu_id:0x%x flags:0x%x idr_handle:0x%x\n", + bo_bucket->size, bo_bucket->addr, bo_bucket->gpu_id, bo_bucket->alloc_flags, + bo_priv->idr_handle); + + pdd = kfd_process_device_data_by_id(p, bo_bucket->gpu_id); + if (!pdd) { + pr_err("Failed to get pdd\n"); + return -ENODEV; + } + + ret = criu_restore_memory_of_gpu(pdd, bo_bucket, bo_priv, &kgd_mem); + if (ret) + return ret; + + /* now map these BOs to GPU/s */ + for (j = 0; j < p->n_pdds; j++) { + struct kfd_node *peer; + struct kfd_process_device *peer_pdd; + + if (!bo_priv->mapped_gpuids[j]) + break; + + peer_pdd = kfd_process_device_data_by_id(p, bo_priv->mapped_gpuids[j]); + if (!peer_pdd) + return -EINVAL; + + peer = peer_pdd->dev; + + peer_pdd = kfd_bind_process_to_device(peer, p); + if (IS_ERR(peer_pdd)) + return PTR_ERR(peer_pdd); + + ret = amdgpu_amdkfd_gpuvm_map_memory_to_gpu(peer->adev, kgd_mem, + peer_pdd->drm_priv); + if (ret) { + pr_err("Failed to map to gpu %d/%d\n", j, p->n_pdds); + return ret; + } + } + + pr_debug("map memory was successful for the BO\n"); + /* create the dmabuf object and export the bo */ + if (bo_bucket->alloc_flags + & (KFD_IOC_ALLOC_MEM_FLAGS_VRAM | KFD_IOC_ALLOC_MEM_FLAGS_GTT)) { + ret = criu_get_prime_handle(kgd_mem, DRM_RDWR, + &bo_bucket->dmabuf_fd); + if (ret) + return ret; + } else { + bo_bucket->dmabuf_fd = KFD_INVALID_FD; + } + + return 0; +} + +static int criu_restore_bos(struct kfd_process *p, + struct kfd_ioctl_criu_args *args, + uint64_t *priv_offset, + uint64_t max_priv_data_size) +{ + struct kfd_criu_bo_bucket *bo_buckets = NULL; + struct kfd_criu_bo_priv_data *bo_privs = NULL; + int ret = 0; + uint32_t i = 0; + + if (*priv_offset + (args->num_bos * sizeof(*bo_privs)) > max_priv_data_size) + return -EINVAL; + + /* Prevent MMU notifications until stage-4 IOCTL (CRIU_RESUME) is received */ + amdgpu_amdkfd_block_mmu_notifications(p->kgd_process_info); + + bo_buckets = kvmalloc_array(args->num_bos, sizeof(*bo_buckets), GFP_KERNEL); + if (!bo_buckets) + return -ENOMEM; + + ret = copy_from_user(bo_buckets, (void __user *)args->bos, + args->num_bos * sizeof(*bo_buckets)); + if (ret) { + pr_err("Failed to copy BOs information from user\n"); + ret = -EFAULT; + goto exit; + } + + bo_privs = kvmalloc_array(args->num_bos, sizeof(*bo_privs), GFP_KERNEL); + if (!bo_privs) { + ret = -ENOMEM; + goto exit; + } + + ret = copy_from_user(bo_privs, (void __user *)args->priv_data + *priv_offset, + args->num_bos * sizeof(*bo_privs)); + if (ret) { + pr_err("Failed to copy BOs information from user\n"); + ret = -EFAULT; + goto exit; + } + *priv_offset += args->num_bos * sizeof(*bo_privs); + + /* Create and map new BOs */ + for (; i < args->num_bos; i++) { + ret = criu_restore_bo(p, &bo_buckets[i], &bo_privs[i]); + if (ret) { + pr_debug("Failed to restore BO[%d] ret%d\n", i, ret); + goto exit; + } + } /* done */ + + /* Copy only the buckets back so user can read bo_buckets[N].restored_offset */ + ret = copy_to_user((void __user *)args->bos, + bo_buckets, + (args->num_bos * sizeof(*bo_buckets))); + if (ret) + ret = -EFAULT; + +exit: + while (ret && i--) { + if (bo_buckets[i].alloc_flags + & (KFD_IOC_ALLOC_MEM_FLAGS_VRAM | KFD_IOC_ALLOC_MEM_FLAGS_GTT)) + close_fd(bo_buckets[i].dmabuf_fd); + } + kvfree(bo_buckets); + kvfree(bo_privs); + return ret; +} + +static int criu_restore_objects(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args, + uint64_t *priv_offset, + uint64_t max_priv_data_size) +{ + int ret = 0; + uint32_t i; + + BUILD_BUG_ON(offsetof(struct kfd_criu_queue_priv_data, object_type)); + BUILD_BUG_ON(offsetof(struct kfd_criu_event_priv_data, object_type)); + BUILD_BUG_ON(offsetof(struct kfd_criu_svm_range_priv_data, object_type)); + + for (i = 0; i < args->num_objects; i++) { + uint32_t object_type; + + if (*priv_offset + sizeof(object_type) > max_priv_data_size) { + pr_err("Invalid private data size\n"); + return -EINVAL; + } + + ret = get_user(object_type, (uint32_t __user *)(args->priv_data + *priv_offset)); + if (ret) { + pr_err("Failed to copy private information from user\n"); + goto exit; + } + + switch (object_type) { + case KFD_CRIU_OBJECT_TYPE_QUEUE: + ret = kfd_criu_restore_queue(p, (uint8_t __user *)args->priv_data, + priv_offset, max_priv_data_size); + if (ret) + goto exit; + break; + case KFD_CRIU_OBJECT_TYPE_EVENT: + ret = kfd_criu_restore_event(filep, p, (uint8_t __user *)args->priv_data, + priv_offset, max_priv_data_size); + if (ret) + goto exit; + break; + case KFD_CRIU_OBJECT_TYPE_SVM_RANGE: + ret = kfd_criu_restore_svm(p, (uint8_t __user *)args->priv_data, + priv_offset, max_priv_data_size); + if (ret) + goto exit; + break; + default: + pr_err("Invalid object type:%u at index:%d\n", object_type, i); + ret = -EINVAL; + goto exit; + } + } +exit: + return ret; +} + +static int criu_restore(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args) +{ + uint64_t priv_offset = 0; + int ret = 0; + + pr_debug("CRIU restore (num_devices:%u num_bos:%u num_objects:%u priv_data_size:%llu)\n", + args->num_devices, args->num_bos, args->num_objects, args->priv_data_size); + + if (!args->bos || !args->devices || !args->priv_data || !args->priv_data_size || + !args->num_devices || !args->num_bos) + return -EINVAL; + + mutex_lock(&p->mutex); + + /* + * Set the process to evicted state to avoid running any new queues before all the memory + * mappings are ready. + */ + ret = kfd_process_evict_queues(p, KFD_QUEUE_EVICTION_CRIU_RESTORE); + if (ret) + goto exit_unlock; + + /* Each function will adjust priv_offset based on how many bytes they consumed */ + ret = criu_restore_process(p, args, &priv_offset, args->priv_data_size); + if (ret) + goto exit_unlock; + + ret = criu_restore_devices(p, args, &priv_offset, args->priv_data_size); + if (ret) + goto exit_unlock; + + ret = criu_restore_bos(p, args, &priv_offset, args->priv_data_size); + if (ret) + goto exit_unlock; + + ret = criu_restore_objects(filep, p, args, &priv_offset, args->priv_data_size); + if (ret) + goto exit_unlock; + + if (priv_offset != args->priv_data_size) { + pr_err("Invalid private data size\n"); + ret = -EINVAL; + } + +exit_unlock: + mutex_unlock(&p->mutex); + if (ret) + pr_err("Failed to restore CRIU ret:%d\n", ret); + else + pr_debug("CRIU restore successful\n"); + + return ret; +} + +static int criu_unpause(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args) +{ + int ret; + + mutex_lock(&p->mutex); + + if (!p->queues_paused) { + mutex_unlock(&p->mutex); + return -EINVAL; + } + + ret = kfd_process_restore_queues(p); + if (ret) + pr_err("Failed to unpause queues ret:%d\n", ret); + else + p->queues_paused = false; + + mutex_unlock(&p->mutex); + + return ret; +} + +static int criu_resume(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args) +{ + struct kfd_process *target = NULL; + struct pid *pid = NULL; + int ret = 0; + + pr_debug("Inside %s, target pid for criu restore: %d\n", __func__, + args->pid); + + pid = find_get_pid(args->pid); + if (!pid) { + pr_err("Cannot find pid info for %i\n", args->pid); + return -ESRCH; + } + + pr_debug("calling kfd_lookup_process_by_pid\n"); + target = kfd_lookup_process_by_pid(pid); + + put_pid(pid); + + if (!target) { + pr_debug("Cannot find process info for %i\n", args->pid); + return -ESRCH; + } + + mutex_lock(&target->mutex); + ret = kfd_criu_resume_svm(target); + if (ret) { + pr_err("kfd_criu_resume_svm failed for %i\n", args->pid); + goto exit; + } + + ret = amdgpu_amdkfd_criu_resume(target->kgd_process_info); + if (ret) + pr_err("amdgpu_amdkfd_criu_resume failed for %i\n", args->pid); + +exit: + mutex_unlock(&target->mutex); + + kfd_unref_process(target); + return ret; +} + +static int criu_process_info(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args) +{ + int ret = 0; + + mutex_lock(&p->mutex); + + if (!p->n_pdds) { + pr_err("No pdd for given process\n"); + ret = -ENODEV; + goto err_unlock; + } + + ret = kfd_process_evict_queues(p, KFD_QUEUE_EVICTION_CRIU_CHECKPOINT); + if (ret) + goto err_unlock; + + p->queues_paused = true; + + args->pid = task_pid_nr_ns(p->lead_thread, + task_active_pid_ns(p->lead_thread)); + + ret = criu_get_process_object_info(p, &args->num_devices, &args->num_bos, + &args->num_objects, &args->priv_data_size); + if (ret) + goto err_unlock; + + dev_dbg(kfd_device, "Num of devices:%u bos:%u objects:%u priv_data_size:%lld\n", + args->num_devices, args->num_bos, args->num_objects, + args->priv_data_size); + +err_unlock: + if (ret) { + kfd_process_restore_queues(p); + p->queues_paused = false; + } + mutex_unlock(&p->mutex); + return ret; +} + +static int kfd_ioctl_criu(struct file *filep, struct kfd_process *p, void *data) +{ + struct kfd_ioctl_criu_args *args = data; + int ret; + + dev_dbg(kfd_device, "CRIU operation: %d\n", args->op); + switch (args->op) { + case KFD_CRIU_OP_PROCESS_INFO: + ret = criu_process_info(filep, p, args); + break; + case KFD_CRIU_OP_CHECKPOINT: + ret = criu_checkpoint(filep, p, args); + break; + case KFD_CRIU_OP_UNPAUSE: + ret = criu_unpause(filep, p, args); + break; + case KFD_CRIU_OP_RESTORE: + ret = criu_restore(filep, p, args); + break; + case KFD_CRIU_OP_RESUME: + ret = criu_resume(filep, p, args); + break; + default: + dev_dbg(kfd_device, "Unsupported CRIU operation:%d\n", args->op); + ret = -EINVAL; + break; + } + + if (ret) + dev_dbg(kfd_device, "CRIU operation:%d err:%d\n", args->op, ret); + + return ret; +} + +static int runtime_enable(struct kfd_process *p, uint64_t r_debug, + bool enable_ttmp_setup) +{ + int i = 0, ret = 0; + + if (p->is_runtime_retry) + goto retry; + + if (p->runtime_info.runtime_state != DEBUG_RUNTIME_STATE_DISABLED) + return -EBUSY; + + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + + if (pdd->qpd.queue_count) + return -EEXIST; + + /* + * Setup TTMPs by default. + * Note that this call must remain here for MES ADD QUEUE to + * skip_process_ctx_clear unconditionally as the first call to + * SET_SHADER_DEBUGGER clears any stale process context data + * saved in MES. + */ + if (pdd->dev->kfd->shared_resources.enable_mes) + kfd_dbg_set_mes_debug_mode(pdd, !kfd_dbg_has_cwsr_workaround(pdd->dev)); + } + + p->runtime_info.runtime_state = DEBUG_RUNTIME_STATE_ENABLED; + p->runtime_info.r_debug = r_debug; + p->runtime_info.ttmp_setup = enable_ttmp_setup; + + if (p->runtime_info.ttmp_setup) { + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + + if (!kfd_dbg_is_rlc_restore_supported(pdd->dev)) { + amdgpu_gfx_off_ctrl(pdd->dev->adev, false); + pdd->dev->kfd2kgd->enable_debug_trap( + pdd->dev->adev, + true, + pdd->dev->vm_info.last_vmid_kfd); + } else if (kfd_dbg_is_per_vmid_supported(pdd->dev)) { + pdd->spi_dbg_override = pdd->dev->kfd2kgd->enable_debug_trap( + pdd->dev->adev, + false, + 0); + } + } + } + +retry: + if (p->debug_trap_enabled) { + if (!p->is_runtime_retry) { + kfd_dbg_trap_activate(p); + kfd_dbg_ev_raise(KFD_EC_MASK(EC_PROCESS_RUNTIME), + p, NULL, 0, false, NULL, 0); + } + + mutex_unlock(&p->mutex); + ret = down_interruptible(&p->runtime_enable_sema); + mutex_lock(&p->mutex); + + p->is_runtime_retry = !!ret; + } + + return ret; +} + +static int runtime_disable(struct kfd_process *p) +{ + int i = 0, ret; + bool was_enabled = p->runtime_info.runtime_state == DEBUG_RUNTIME_STATE_ENABLED; + + p->runtime_info.runtime_state = DEBUG_RUNTIME_STATE_DISABLED; + p->runtime_info.r_debug = 0; + + if (p->debug_trap_enabled) { + if (was_enabled) + kfd_dbg_trap_deactivate(p, false, 0); + + if (!p->is_runtime_retry) + kfd_dbg_ev_raise(KFD_EC_MASK(EC_PROCESS_RUNTIME), + p, NULL, 0, false, NULL, 0); + + mutex_unlock(&p->mutex); + ret = down_interruptible(&p->runtime_enable_sema); + mutex_lock(&p->mutex); + + p->is_runtime_retry = !!ret; + if (ret) + return ret; + } + + if (was_enabled && p->runtime_info.ttmp_setup) { + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + + if (!kfd_dbg_is_rlc_restore_supported(pdd->dev)) + amdgpu_gfx_off_ctrl(pdd->dev->adev, true); + } + } + + p->runtime_info.ttmp_setup = false; + + /* disable ttmp setup */ + for (i = 0; i < p->n_pdds; i++) { + struct kfd_process_device *pdd = p->pdds[i]; + + if (kfd_dbg_is_per_vmid_supported(pdd->dev)) { + pdd->spi_dbg_override = + pdd->dev->kfd2kgd->disable_debug_trap( + pdd->dev->adev, + false, + pdd->dev->vm_info.last_vmid_kfd); + + if (!pdd->dev->kfd->shared_resources.enable_mes) + debug_refresh_runlist(pdd->dev->dqm); + else + kfd_dbg_set_mes_debug_mode(pdd, + !kfd_dbg_has_cwsr_workaround(pdd->dev)); + } + } + + return 0; +} + +static int kfd_ioctl_runtime_enable(struct file *filep, struct kfd_process *p, void *data) +{ + struct kfd_ioctl_runtime_enable_args *args = data; + int r; + + mutex_lock(&p->mutex); + + if (args->mode_mask & KFD_RUNTIME_ENABLE_MODE_ENABLE_MASK) + r = runtime_enable(p, args->r_debug, + !!(args->mode_mask & KFD_RUNTIME_ENABLE_MODE_TTMP_SAVE_MASK)); + else + r = runtime_disable(p); + + mutex_unlock(&p->mutex); + + return r; +} + +static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, void *data) +{ + struct kfd_ioctl_dbg_trap_args *args = data; + struct task_struct *thread = NULL; + struct mm_struct *mm = NULL; + struct pid *pid = NULL; + struct kfd_process *target = NULL; + struct kfd_process_device *pdd = NULL; + int r = 0; + + if (sched_policy == KFD_SCHED_POLICY_NO_HWS) { + pr_err("Debugging does not support sched_policy %i", sched_policy); + return -EINVAL; + } + + pid = find_get_pid(args->pid); + if (!pid) { + pr_debug("Cannot find pid info for %i\n", args->pid); + r = -ESRCH; + goto out; + } + + thread = get_pid_task(pid, PIDTYPE_PID); + if (!thread) { + r = -ESRCH; + goto out; + } + + mm = get_task_mm(thread); + if (!mm) { + r = -ESRCH; + goto out; + } + + if (args->op == KFD_IOC_DBG_TRAP_ENABLE) { + bool create_process; + + rcu_read_lock(); + create_process = thread && thread != current && ptrace_parent(thread) == current; + rcu_read_unlock(); + + target = create_process ? kfd_create_process(thread) : + kfd_lookup_process_by_pid(pid); + } else { + target = kfd_lookup_process_by_pid(pid); + } + + if (IS_ERR_OR_NULL(target)) { + pr_debug("Cannot find process PID %i to debug\n", args->pid); + r = target ? PTR_ERR(target) : -ESRCH; + goto out; + } + + /* Check if target is still PTRACED. */ + rcu_read_lock(); + if (target != p && args->op != KFD_IOC_DBG_TRAP_DISABLE + && ptrace_parent(target->lead_thread) != current) { + pr_err("PID %i is not PTRACED and cannot be debugged\n", args->pid); + r = -EPERM; + } + rcu_read_unlock(); + + if (r) + goto out; + + mutex_lock(&target->mutex); + + if (args->op != KFD_IOC_DBG_TRAP_ENABLE && !target->debug_trap_enabled) { + pr_err("PID %i not debug enabled for op %i\n", args->pid, args->op); + r = -EINVAL; + goto unlock_out; + } + + if (target->runtime_info.runtime_state != DEBUG_RUNTIME_STATE_ENABLED && + (args->op == KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_OVERRIDE || + args->op == KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_MODE || + args->op == KFD_IOC_DBG_TRAP_SUSPEND_QUEUES || + args->op == KFD_IOC_DBG_TRAP_RESUME_QUEUES || + args->op == KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH || + args->op == KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH || + args->op == KFD_IOC_DBG_TRAP_SET_FLAGS)) { + r = -EPERM; + goto unlock_out; + } + + if (args->op == KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH || + args->op == KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH) { + int user_gpu_id = kfd_process_get_user_gpu_id(target, + args->op == KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH ? + args->set_node_address_watch.gpu_id : + args->clear_node_address_watch.gpu_id); + + pdd = kfd_process_device_data_by_id(target, user_gpu_id); + if (user_gpu_id == -EINVAL || !pdd) { + r = -ENODEV; + goto unlock_out; + } + } + + switch (args->op) { + case KFD_IOC_DBG_TRAP_ENABLE: + if (target != p) + target->debugger_process = p; + + r = kfd_dbg_trap_enable(target, + args->enable.dbg_fd, + (void __user *)args->enable.rinfo_ptr, + &args->enable.rinfo_size); + if (!r) + target->exception_enable_mask = args->enable.exception_mask; + + break; + case KFD_IOC_DBG_TRAP_DISABLE: + r = kfd_dbg_trap_disable(target); + break; + case KFD_IOC_DBG_TRAP_SEND_RUNTIME_EVENT: + r = kfd_dbg_send_exception_to_runtime(target, + args->send_runtime_event.gpu_id, + args->send_runtime_event.queue_id, + args->send_runtime_event.exception_mask); + break; + case KFD_IOC_DBG_TRAP_SET_EXCEPTIONS_ENABLED: + kfd_dbg_set_enabled_debug_exception_mask(target, + args->set_exceptions_enabled.exception_mask); + break; + case KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_OVERRIDE: + r = kfd_dbg_trap_set_wave_launch_override(target, + args->launch_override.override_mode, + args->launch_override.enable_mask, + args->launch_override.support_request_mask, + &args->launch_override.enable_mask, + &args->launch_override.support_request_mask); + break; + case KFD_IOC_DBG_TRAP_SET_WAVE_LAUNCH_MODE: + r = kfd_dbg_trap_set_wave_launch_mode(target, + args->launch_mode.launch_mode); + break; + case KFD_IOC_DBG_TRAP_SUSPEND_QUEUES: + r = suspend_queues(target, + args->suspend_queues.num_queues, + args->suspend_queues.grace_period, + args->suspend_queues.exception_mask, + (uint32_t *)args->suspend_queues.queue_array_ptr); + + break; + case KFD_IOC_DBG_TRAP_RESUME_QUEUES: + r = resume_queues(target, args->resume_queues.num_queues, + (uint32_t *)args->resume_queues.queue_array_ptr); + break; + case KFD_IOC_DBG_TRAP_SET_NODE_ADDRESS_WATCH: + r = kfd_dbg_trap_set_dev_address_watch(pdd, + args->set_node_address_watch.address, + args->set_node_address_watch.mask, + &args->set_node_address_watch.id, + args->set_node_address_watch.mode); + break; + case KFD_IOC_DBG_TRAP_CLEAR_NODE_ADDRESS_WATCH: + r = kfd_dbg_trap_clear_dev_address_watch(pdd, + args->clear_node_address_watch.id); + break; + case KFD_IOC_DBG_TRAP_SET_FLAGS: + r = kfd_dbg_trap_set_flags(target, &args->set_flags.flags); + break; + case KFD_IOC_DBG_TRAP_QUERY_DEBUG_EVENT: + r = kfd_dbg_ev_query_debug_event(target, + &args->query_debug_event.queue_id, + &args->query_debug_event.gpu_id, + args->query_debug_event.exception_mask, + &args->query_debug_event.exception_mask); + break; + case KFD_IOC_DBG_TRAP_QUERY_EXCEPTION_INFO: + r = kfd_dbg_trap_query_exception_info(target, + args->query_exception_info.source_id, + args->query_exception_info.exception_code, + args->query_exception_info.clear_exception, + (void __user *)args->query_exception_info.info_ptr, + &args->query_exception_info.info_size); + break; + case KFD_IOC_DBG_TRAP_GET_QUEUE_SNAPSHOT: + r = pqm_get_queue_snapshot(&target->pqm, + args->queue_snapshot.exception_mask, + (void __user *)args->queue_snapshot.snapshot_buf_ptr, + &args->queue_snapshot.num_queues, + &args->queue_snapshot.entry_size); + break; + case KFD_IOC_DBG_TRAP_GET_DEVICE_SNAPSHOT: + r = kfd_dbg_trap_device_snapshot(target, + args->device_snapshot.exception_mask, + (void __user *)args->device_snapshot.snapshot_buf_ptr, + &args->device_snapshot.num_devices, + &args->device_snapshot.entry_size); + break; + default: + pr_err("Invalid option: %i\n", args->op); + r = -EINVAL; + } + +unlock_out: + mutex_unlock(&target->mutex); + +out: + if (thread) + put_task_struct(thread); + + if (mm) + mmput(mm); + + if (pid) + put_pid(pid); + + if (target) + kfd_unref_process(target); + + return r; +} + +#define AMDKFD_IOCTL_DEF(ioctl, _func, _flags) \ + [_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, \ + .cmd_drv = 0, .name = #ioctl} + +/** Ioctl table */ +static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = { + AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_VERSION, + kfd_ioctl_get_version, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_CREATE_QUEUE, + kfd_ioctl_create_queue, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DESTROY_QUEUE, + kfd_ioctl_destroy_queue, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SET_MEMORY_POLICY, + kfd_ioctl_set_memory_policy, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_CLOCK_COUNTERS, + kfd_ioctl_get_clock_counters, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_PROCESS_APERTURES, + kfd_ioctl_get_process_apertures, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_UPDATE_QUEUE, + kfd_ioctl_update_queue, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_CREATE_EVENT, + kfd_ioctl_create_event, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DESTROY_EVENT, + kfd_ioctl_destroy_event, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SET_EVENT, + kfd_ioctl_set_event, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_RESET_EVENT, + kfd_ioctl_reset_event, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_WAIT_EVENTS, + kfd_ioctl_wait_events, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_REGISTER_DEPRECATED, + kfd_ioctl_dbg_register, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_UNREGISTER_DEPRECATED, + kfd_ioctl_dbg_unregister, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_ADDRESS_WATCH_DEPRECATED, + kfd_ioctl_dbg_address_watch, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_WAVE_CONTROL_DEPRECATED, + kfd_ioctl_dbg_wave_control, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SET_SCRATCH_BACKING_VA, + kfd_ioctl_set_scratch_backing_va, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_TILE_CONFIG, + kfd_ioctl_get_tile_config, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SET_TRAP_HANDLER, + kfd_ioctl_set_trap_handler, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_PROCESS_APERTURES_NEW, + kfd_ioctl_get_process_apertures_new, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_ACQUIRE_VM, + kfd_ioctl_acquire_vm, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_ALLOC_MEMORY_OF_GPU, + kfd_ioctl_alloc_memory_of_gpu, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_FREE_MEMORY_OF_GPU, + kfd_ioctl_free_memory_of_gpu, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_MAP_MEMORY_TO_GPU, + kfd_ioctl_map_memory_to_gpu, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_UNMAP_MEMORY_FROM_GPU, + kfd_ioctl_unmap_memory_from_gpu, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SET_CU_MASK, + kfd_ioctl_set_cu_mask, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_QUEUE_WAVE_STATE, + kfd_ioctl_get_queue_wave_state, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_GET_DMABUF_INFO, + kfd_ioctl_get_dmabuf_info, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_IMPORT_DMABUF, + kfd_ioctl_import_dmabuf, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_ALLOC_QUEUE_GWS, + kfd_ioctl_alloc_queue_gws, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SMI_EVENTS, + kfd_ioctl_smi_events, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SVM, kfd_ioctl_svm, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_SET_XNACK_MODE, + kfd_ioctl_set_xnack_mode, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_CRIU_OP, + kfd_ioctl_criu, KFD_IOC_FLAG_CHECKPOINT_RESTORE), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_AVAILABLE_MEMORY, + kfd_ioctl_get_available_memory, 0), + + AMDKFD_IOCTL_DEF(AMDKFD_IOC_EXPORT_DMABUF, + kfd_ioctl_export_dmabuf, 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) + +static long kfd_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) +{ + struct kfd_process *process; + amdkfd_ioctl_t *func; + const struct amdkfd_ioctl_desc *ioctl = NULL; + unsigned int nr = _IOC_NR(cmd); + char stack_kdata[128]; + char *kdata = NULL; + unsigned int usize, asize; + int retcode = -EINVAL; + bool ptrace_attached = false; + + if (nr >= AMDKFD_CORE_IOCTL_COUNT) + goto err_i1; + + if ((nr >= AMDKFD_COMMAND_START) && (nr < AMDKFD_COMMAND_END)) { + u32 amdkfd_size; + + ioctl = &amdkfd_ioctls[nr]; + + amdkfd_size = _IOC_SIZE(ioctl->cmd); + usize = asize = _IOC_SIZE(cmd); + if (amdkfd_size > asize) + asize = amdkfd_size; + + cmd = ioctl->cmd; + } else + goto err_i1; + + dev_dbg(kfd_device, "ioctl cmd 0x%x (#0x%x), arg 0x%lx\n", cmd, nr, arg); + + /* Get the process struct from the filep. Only the process + * that opened /dev/kfd can use the file descriptor. Child + * processes need to create their own KFD device context. + */ + process = filep->private_data; + + rcu_read_lock(); + if ((ioctl->flags & KFD_IOC_FLAG_CHECKPOINT_RESTORE) && + ptrace_parent(process->lead_thread) == current) + ptrace_attached = true; + rcu_read_unlock(); + + if (process->lead_thread != current->group_leader + && !ptrace_attached) { + dev_dbg(kfd_device, "Using KFD FD in wrong process\n"); + retcode = -EBADF; + goto err_i1; + } + + /* Do not trust userspace, use our own definition */ + func = ioctl->func; + + if (unlikely(!func)) { + dev_dbg(kfd_device, "no function\n"); + retcode = -EINVAL; + goto err_i1; + } + + /* + * Versions of docker shipped in Ubuntu 18.xx and 20.xx do not support + * CAP_CHECKPOINT_RESTORE, so we also allow access if CAP_SYS_ADMIN as CAP_SYS_ADMIN is a + * more priviledged access. + */ + if (unlikely(ioctl->flags & KFD_IOC_FLAG_CHECKPOINT_RESTORE)) { + if (!capable(CAP_CHECKPOINT_RESTORE) && + !capable(CAP_SYS_ADMIN)) { + retcode = -EACCES; + goto err_i1; + } + } + + if (cmd & (IOC_IN | IOC_OUT)) { + if (asize <= sizeof(stack_kdata)) { + kdata = stack_kdata; + } else { + kdata = kmalloc(asize, GFP_KERNEL); + if (!kdata) { + retcode = -ENOMEM; + goto err_i1; + } + } + if (asize > usize) + memset(kdata + usize, 0, asize - usize); + } + + if (cmd & IOC_IN) { + if (copy_from_user(kdata, (void __user *)arg, usize) != 0) { + retcode = -EFAULT; + goto err_i1; + } + } else if (cmd & IOC_OUT) { + memset(kdata, 0, usize); + } + + retcode = func(filep, process, kdata); + + if (cmd & IOC_OUT) + if (copy_to_user((void __user *)arg, kdata, usize) != 0) + retcode = -EFAULT; + +err_i1: + if (!ioctl) + dev_dbg(kfd_device, "invalid ioctl: pid=%d, cmd=0x%02x, nr=0x%02x\n", + task_pid_nr(current), cmd, nr); + + if (kdata != stack_kdata) + kfree(kdata); + + if (retcode) + dev_dbg(kfd_device, "ioctl cmd (#0x%x), arg 0x%lx, ret = %d\n", + nr, arg, retcode); + + return retcode; +} + +static int kfd_mmio_mmap(struct kfd_node *dev, struct kfd_process *process, + struct vm_area_struct *vma) +{ + phys_addr_t address; + + if (vma->vm_end - vma->vm_start != PAGE_SIZE) + return -EINVAL; + + address = dev->adev->rmmio_remap.bus_addr; + + vm_flags_set(vma, VM_IO | VM_DONTCOPY | VM_DONTEXPAND | VM_NORESERVE | + VM_DONTDUMP | VM_PFNMAP); + + vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); + + pr_debug("pasid 0x%x mapping mmio page\n" + " target user address == 0x%08llX\n" + " physical address == 0x%08llX\n" + " vm_flags == 0x%04lX\n" + " size == 0x%04lX\n", + process->pasid, (unsigned long long) vma->vm_start, + address, vma->vm_flags, PAGE_SIZE); + + return io_remap_pfn_range(vma, + vma->vm_start, + address >> PAGE_SHIFT, + PAGE_SIZE, + vma->vm_page_prot); +} + + +static int kfd_mmap(struct file *filp, struct vm_area_struct *vma) +{ + struct kfd_process *process; + struct kfd_node *dev = NULL; + unsigned long mmap_offset; + unsigned int gpu_id; + + process = kfd_get_process(current); + if (IS_ERR(process)) + return PTR_ERR(process); + + mmap_offset = vma->vm_pgoff << PAGE_SHIFT; + gpu_id = KFD_MMAP_GET_GPU_ID(mmap_offset); + if (gpu_id) + dev = kfd_device_by_id(gpu_id); + + switch (mmap_offset & KFD_MMAP_TYPE_MASK) { + case KFD_MMAP_TYPE_DOORBELL: + if (!dev) + return -ENODEV; + return kfd_doorbell_mmap(dev, process, vma); + + case KFD_MMAP_TYPE_EVENTS: + return kfd_event_mmap(process, vma); + + case KFD_MMAP_TYPE_RESERVED_MEM: + if (!dev) + return -ENODEV; + return kfd_reserved_mem_mmap(dev, process, vma); + case KFD_MMAP_TYPE_MMIO: + if (!dev) + return -ENODEV; + return kfd_mmio_mmap(dev, process, vma); + } + + return -EFAULT; +} -- cgit v1.2.3