diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdkfd/kfd_chardev.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 3179 |
1 files changed, 2801 insertions, 378 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 6316aad43a73..22925df6a791 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -1,5 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0 OR MIT /* - * Copyright 2014 Advanced Micro Devices, Inc. + * 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"), @@ -21,9 +22,9 @@ */ #include <linux/device.h> -#include <linux/export.h> #include <linux/err.h> #include <linux/fs.h> +#include <linux/file.h> #include <linux/sched.h> #include <linux/slab.h> #include <linux/uaccess.h> @@ -32,13 +33,20 @@ #include <linux/time.h> #include <linux/mm.h> #include <linux/mman.h> -#include <asm/processor.h> +#include <linux/ptrace.h> +#include <linux/dma-buf.h> +#include <linux/processor.h> #include "kfd_priv.h" #include "kfd_device_queue_manager.h" -#include "kfd_dbgmgr.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"; @@ -46,14 +54,36 @@ static const char kfd_dev_name[] = "kfd"; static const struct file_operations kfd_fops = { .owner = THIS_MODULE, .unlocked_ioctl = kfd_ioctl, - .compat_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 const struct class kfd_class = { + .name = kfd_dev_name, +}; + +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) { @@ -64,14 +94,13 @@ int kfd_chardev_init(void) if (err < 0) goto err_register_chrdev; - kfd_class = class_create(THIS_MODULE, kfd_dev_name); - err = PTR_ERR(kfd_class); - if (IS_ERR(kfd_class)) + err = class_register(&kfd_class); + if (err) goto err_class_create; - kfd_device = device_create(kfd_class, NULL, - MKDEV(kfd_char_dev_major, 0), - NULL, kfd_dev_name); + 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; @@ -79,7 +108,7 @@ int kfd_chardev_init(void) return 0; err_device_create: - class_destroy(kfd_class); + class_unregister(&kfd_class); err_class_create: unregister_chrdev(kfd_char_dev_major, kfd_dev_name); err_register_chrdev: @@ -88,14 +117,10 @@ err_register_chrdev: void kfd_chardev_exit(void) { - device_destroy(kfd_class, MKDEV(kfd_char_dev_major, 0)); - class_destroy(kfd_class); + device_destroy(&kfd_class, MKDEV(kfd_char_dev_major, 0)); + class_unregister(&kfd_class); unregister_chrdev(kfd_char_dev_major, kfd_dev_name); -} - -struct device *kfd_chardev(void) -{ - return kfd_device; + kfd_device = NULL; } @@ -121,8 +146,26 @@ static int kfd_open(struct inode *inode, struct file *filep) if (IS_ERR(process)) return PTR_ERR(process); - dev_dbg(kfd_device, "process %d opened, compat mode (32 bit) - %d\n", - process->pasid, process->is_32bit_user_mode); + 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 pid %d opened kfd node, compat mode (32 bit) - %d\n", + process->lead_thread->pid, 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; } @@ -141,76 +184,90 @@ static int kfd_ioctl_get_version(struct file *filep, struct kfd_process *p, static int set_queue_properties_from_user(struct queue_properties *q_properties, struct kfd_ioctl_create_queue_args *args) { - if (args->queue_percentage > KFD_MAX_QUEUE_PERCENTAGE) { - pr_err("kfd: queue percentage must be between 0 to KFD_MAX_QUEUE_PERCENTAGE\n"); + /* + * 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("kfd: queue priority must be between 0 to KFD_MAX_QUEUE_PRIORITY\n"); + pr_err("Queue priority must be between 0 to KFD_MAX_QUEUE_PRIORITY\n"); return -EINVAL; } if ((args->ring_base_address) && - (!access_ok(VERIFY_WRITE, - (const void __user *) args->ring_base_address, + (!access_ok((const void __user *) args->ring_base_address, sizeof(uint64_t)))) { - pr_err("kfd: can't access ring base address\n"); + 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("kfd: ring size must be a power of 2 or 0\n"); + pr_err("Ring size must be a power of 2 or 0\n"); return -EINVAL; } - if (!access_ok(VERIFY_WRITE, - (const void __user *) args->read_pointer_address, + if (args->ring_size < KFD_MIN_QUEUE_RING_SIZE) { + args->ring_size = KFD_MIN_QUEUE_RING_SIZE; + pr_debug("Size lower. clamped to KFD_MIN_QUEUE_RING_SIZE"); + } + + if (!access_ok((const void __user *) args->read_pointer_address, sizeof(uint32_t))) { - pr_err("kfd: can't access read pointer\n"); + pr_err("Can't access read pointer\n"); return -EFAULT; } - if (!access_ok(VERIFY_WRITE, - (const void __user *) args->write_pointer_address, + if (!access_ok((const void __user *) args->write_pointer_address, sizeof(uint32_t))) { - pr_err("kfd: can't access write pointer\n"); + pr_err("Can't access write pointer\n"); return -EFAULT; } if (args->eop_buffer_address && - !access_ok(VERIFY_WRITE, - (const void __user *) args->eop_buffer_address, + !access_ok((const void __user *) args->eop_buffer_address, sizeof(uint32_t))) { - pr_debug("kfd: can't access eop buffer"); + pr_debug("Can't access eop buffer"); return -EFAULT; } if (args->ctx_save_restore_address && - !access_ok(VERIFY_WRITE, - (const void __user *) args->ctx_save_restore_address, + !access_ok((const void __user *) args->ctx_save_restore_address, sizeof(uint32_t))) { - pr_debug("kfd: can't access ctx save restore buffer"); + pr_debug("Can't access ctx save restore buffer"); return -EFAULT; } q_properties->is_interop = false; - q_properties->queue_percent = args->queue_percentage; + 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->read_ptr = (void __user *)args->read_pointer_address; + q_properties->write_ptr = (void __user *)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; + q_properties->sdma_engine_id = args->sdma_engine_id; 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 if (args->queue_type == KFD_IOC_QUEUE_TYPE_SDMA_BY_ENG_ID) + q_properties->type = KFD_QUEUE_TYPE_SDMA_BY_ENG_ID; else return -ENOTSUPP; @@ -219,27 +276,27 @@ static int set_queue_properties_from_user(struct queue_properties *q_properties, else q_properties->format = KFD_QUEUE_FORMAT_PM4; - pr_debug("Queue Percentage (%d, %d)\n", + pr_debug("Queue Percentage: %d, %d\n", q_properties->queue_percent, args->queue_percentage); - pr_debug("Queue Priority (%d, %d)\n", + pr_debug("Queue Priority: %d, %d\n", q_properties->priority, args->queue_priority); - pr_debug("Queue Address (0x%llX, 0x%llX)\n", + 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", + pr_debug("Queue Size: 0x%llX, %u\n", q_properties->queue_size, args->ring_size); - pr_debug("Queue r/w Pointers (0x%llX, 0x%llX)\n", - (uint64_t) q_properties->read_ptr, - (uint64_t) q_properties->write_ptr); + 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 Format: %d\n", q_properties->format); - pr_debug("Queue EOP (0x%llX)\n", q_properties->eop_ring_buffer_address); + pr_debug("Queue EOP: 0x%llX\n", q_properties->eop_ring_buffer_address); - pr_debug("Queue CTX save arex (0x%llX)\n", + pr_debug("Queue CTX save area: 0x%llX\n", q_properties->ctx_save_restore_area_address); return 0; @@ -249,41 +306,71 @@ 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_dev *dev; + 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; memset(&q_properties, 0, sizeof(struct queue_properties)); - pr_debug("kfd: creating queue ioctl\n"); + pr_debug("Creating queue ioctl\n"); err = set_queue_properties_from_user(&q_properties, args); if (err) return err; - pr_debug("kfd: looking for gpu id 0x%x\n", args->gpu_id); - dev = kfd_device_by_id(args->gpu_id); - if (dev == NULL) { - pr_debug("kfd: gpu id 0x%x was not found\n", args->gpu_id); - return -EINVAL; - } + 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; } - pr_debug("kfd: creating queue for PASID %d on GPU 0x%x\n", - p->pasid, + if (q_properties.type == KFD_QUEUE_TYPE_SDMA_BY_ENG_ID) { + int max_sdma_eng_id = kfd_get_num_sdma_engines(dev) + + kfd_get_num_xgmi_sdma_engines(dev) - 1; + + if (q_properties.sdma_engine_id > max_sdma_eng_id) { + err = -EINVAL; + pr_err("sdma_engine_id %i exceeds maximum id of %i\n", + q_properties.sdma_engine_id, max_sdma_eng_id); + goto err_sdma_engine_id; + } + } + + 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; + } + } + + err = kfd_queue_acquire_buffers(pdd, &q_properties); + if (err) { + pr_debug("failed to acquire user queue buffers\n"); + goto err_acquire_queue_buf; + } + + pr_debug("Creating queue for process pid %d on gpu 0x%x\n", + p->lead_thread->pid, dev->id); - err = pqm_create_queue(&p->pqm, dev, filep, &q_properties, - 0, q_properties.type, &queue_id); + err = pqm_create_queue(&p->pqm, dev, &q_properties, &queue_id, + NULL, NULL, NULL, &doorbell_offset_in_process); if (err != 0) goto err_create_queue; @@ -291,26 +378,37 @@ static int kfd_ioctl_create_queue(struct file *filep, struct kfd_process *p, /* Return gpu_id as doorbell offset for mmap usage */ - args->doorbell_offset = (KFD_MMAP_DOORBELL_MASK | args->gpu_id); - args->doorbell_offset <<= PAGE_SHIFT; + 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("kfd: queue id %d was created successfully\n", args->queue_id); + pr_debug("Queue id %d was created successfully\n", args->queue_id); - pr_debug("ring buffer address == 0x%016llX\n", + pr_debug("Ring buffer address == 0x%016llX\n", args->ring_base_address); - pr_debug("read ptr address == 0x%016llX\n", + pr_debug("Read ptr address == 0x%016llX\n", args->read_pointer_address); - pr_debug("write ptr address == 0x%016llX\n", + 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: + kfd_queue_unref_bo_vas(pdd, &q_properties); + kfd_queue_release_buffers(pdd, &q_properties); +err_acquire_queue_buf: +err_sdma_engine_id: err_bind_process: +err_pdd: mutex_unlock(&p->mutex); return err; } @@ -321,9 +419,9 @@ static int kfd_ioctl_destroy_queue(struct file *filp, struct kfd_process *p, int retval; struct kfd_ioctl_destroy_queue_args *args = data; - pr_debug("kfd: destroying queue id %d for PASID %d\n", + pr_debug("Destroying queue id %d for process pid %d\n", args->queue_id, - p->pasid); + p->lead_thread->pid); mutex_lock(&p->mutex); @@ -340,51 +438,127 @@ static int kfd_ioctl_update_queue(struct file *filp, struct kfd_process *p, struct kfd_ioctl_update_queue_args *args = data; struct queue_properties properties; - if (args->queue_percentage > KFD_MAX_QUEUE_PERCENTAGE) { - pr_err("kfd: queue percentage must be between 0 to KFD_MAX_QUEUE_PERCENTAGE\n"); + /* + * 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("kfd: queue priority must be between 0 to KFD_MAX_QUEUE_PRIORITY\n"); + pr_err("Queue priority must be between 0 to KFD_MAX_QUEUE_PRIORITY\n"); return -EINVAL; } if ((args->ring_base_address) && - (!access_ok(VERIFY_WRITE, - (const void __user *) args->ring_base_address, + (!access_ok((const void __user *) args->ring_base_address, sizeof(uint64_t)))) { - pr_err("kfd: can't access ring base address\n"); + 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("kfd: ring size must be a power of 2 or 0\n"); + pr_err("Ring size must be a power of 2 or 0\n"); return -EINVAL; } + if (args->ring_size < KFD_MIN_QUEUE_RING_SIZE) { + args->ring_size = KFD_MIN_QUEUE_RING_SIZE; + pr_debug("Size lower. clamped to KFD_MIN_QUEUE_RING_SIZE"); + } + properties.queue_address = args->ring_base_address; properties.queue_size = args->ring_size; - properties.queue_percent = args->queue_percentage; + 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("kfd: updating queue id %d for PASID %d\n", - args->queue_id, p->pasid); + pr_debug("Updating queue id %d for process pid %d\n", + args->queue_id, p->lead_thread->pid); + + 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 = memdup_user(cu_mask_ptr, cu_mask_size); + if (IS_ERR(minfo.cu_mask.ptr)) { + pr_debug("Could not copy CU mask from userspace"); + return PTR_ERR(minfo.cu_mask.ptr); + } mutex_lock(&p->mutex); - retval = pqm_update_queue(&p->pqm, args->queue_id, &properties); + retval = pqm_update_mqd(&p->pqm, args->queue_id, &minfo); mutex_unlock(&p->mutex); + 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; - struct kfd_dev *dev; int err = 0; struct kfd_process_device *pdd; enum cache_policy default_policy, alternate_policy; @@ -399,13 +573,15 @@ static int kfd_ioctl_set_memory_policy(struct file *filep, return -EINVAL; } - dev = kfd_device_by_id(args->gpu_id); - if (dev == NULL) - 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(dev, p); + pdd = kfd_bind_process_to_device(pdd->dev, p); if (IS_ERR(pdd)) { err = -ESRCH; goto out; @@ -418,15 +594,47 @@ static int kfd_ioctl_set_memory_policy(struct file *filep, (args->alternate_policy == KFD_IOC_CACHE_POLICY_COHERENT) ? cache_policy_coherent : cache_policy_noncoherent; - if (!dev->dqm->ops.set_cache_memory_policy(dev->dqm, + 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)) + args->alternate_aperture_size, + args->misc_process_flag)) 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; @@ -435,420 +643,2487 @@ out: static int kfd_ioctl_dbg_register(struct file *filep, struct kfd_process *p, void *data) { - struct kfd_ioctl_dbg_register_args *args = data; - struct kfd_dev *dev; - struct kfd_dbgmgr *dbgmgr_ptr; + 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; - bool create_ok; - long status = 0; - dev = kfd_device_by_id(args->gpu_id); - if (dev == NULL) + 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 process pid %d", p->lead_thread->pid); + + 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 process pid %d", + p->lead_thread->pid); + + 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 = kcalloc(args->num_of_nodes, sizeof(struct kfd_process_device_apertures), + 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 (dev->kfd->adev->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; +} - if (dev->device_info->asic_family == CHIP_CARRIZO) { - pr_debug("kfd_ioctl_dbg_register not supported on CZ\n"); +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); + + /* Skip a special case that allocates VRAM without VA, + * VA will be invalid of 0. + */ + if (!(!args->va_addr && (flags & KFD_IOC_ALLOC_MEM_FLAGS_VRAM)) && + 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; } - mutex_lock(kfd_get_dbgmgr_mutex()); + /* 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 || (PAGE_SIZE > 4096)) { + 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; + atomic64_add(PAGE_ALIGN(size), &pdd->vram_usage); + } + + 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); /* - * make sure that we have pdd, if this the first queue created for - * this process + * 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)); + + atomic64_sub(size, &pdd->vram_usage); + +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)) { - mutex_unlock(&p->mutex); - mutex_unlock(kfd_get_dbgmgr_mutex()); - return PTR_ERR(pdd); + err = PTR_ERR(pdd); + goto bind_process_to_device_failed; } - if (dev->dbgmgr == NULL) { - /* In case of a legal call, we have no dbgmgr yet */ - create_ok = kfd_dbgmgr_create(&dbgmgr_ptr, dev); - if (create_ok) { - status = kfd_dbgmgr_register(dbgmgr_ptr, p); - if (status != 0) - kfd_dbgmgr_destroy(dbgmgr_ptr); - else - dev->dbgmgr = dbgmgr_ptr; + 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; } - } else { - pr_debug("debugger already registered\n"); - status = -EINVAL; + + 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); - mutex_unlock(kfd_get_dbgmgr_mutex()); +copy_from_user_failed: + kfree(devices_arr); - return status; + return err; } -static int kfd_ioctl_dbg_unregister(struct file *filep, - struct kfd_process *p, void *data) +static int kfd_ioctl_unmap_memory_from_gpu(struct file *filep, + struct kfd_process *p, void *data) { - struct kfd_ioctl_dbg_unregister_args *args = data; - struct kfd_dev *dev; - long status; - - dev = kfd_device_by_id(args->gpu_id); - if (dev == NULL) + 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_debug("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; + } + } + + /* 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; + if (flush_tlb) + kfd_flush_tlb(peer_pdd, TLB_FLUSH_HEAVYWEIGHT); + + /* Remove dma mapping after tlb flush to avoid IO_PAGE_FAULT */ + err = amdgpu_amdkfd_gpuvm_dmaunmap_mem(mem, peer_pdd->drm_priv); + if (err) + goto sync_memory_failed; + } + + mutex_unlock(&p->mutex); + + 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; - if (dev->device_info->asic_family == CHIP_CARRIZO) { - pr_debug("kfd_ioctl_dbg_unregister not supported on CZ\n"); +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 && !kfd_devcgroup_check_permission(dev)) + break; + if (!dev) return -EINVAL; + + if (args->metadata_ptr) { + metadata_buffer = kzalloc(args->metadata_size, GFP_KERNEL); + if (!metadata_buffer) + return -ENOMEM; } - mutex_lock(kfd_get_dbgmgr_mutex()); + /* 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; - status = kfd_dbgmgr_unregister(dev->dbgmgr, p); - if (status == 0) { - kfd_dbgmgr_destroy(dev->dbgmgr); - dev->dbgmgr = NULL; + if (xcp_id >= 0) + args->gpu_id = dmabuf_adev->kfd.dev->nodes[xcp_id]->id; + else + args->gpu_id = dev->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; } - mutex_unlock(kfd_get_dbgmgr_mutex()); +exit: + kfree(metadata_buffer); - return status; + return r; } -/* - * Parse and generate variable size data structure for address watch. - * Total size of the buffer and # watch points is limited in order - * to prevent kernel abuse. (no bearing to the much smaller HW limitation - * which is enforced by dbgdev module) - * please also note that the watch address itself are not "copied from user", - * since it be set into the HW in user mode values. - * - */ -static int kfd_ioctl_dbg_address_watch(struct file *filep, - struct kfd_process *p, void *data) +static int kfd_ioctl_import_dmabuf(struct file *filep, + struct kfd_process *p, void *data) { - struct kfd_ioctl_dbg_address_watch_args *args = data; - struct kfd_dev *dev; - struct dbg_address_watch_info aw_info; - unsigned char *args_buff; - long status; - void __user *cmd_from_user; - uint64_t watch_mask_value = 0; - unsigned int args_idx = 0; + struct kfd_ioctl_import_dmabuf_args *args = data; + struct kfd_process_device *pdd; + int idr_handle; + uint64_t size; + void *mem; + int r; - memset((void *) &aw_info, 0, sizeof(struct dbg_address_watch_info)); + 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_fd(pdd->dev->adev, args->dmabuf_fd, + 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); - dev = kfd_device_by_id(args->gpu_id); - if (dev == NULL) + 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); + 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; - if (dev->device_info->asic_family == CHIP_CARRIZO) { - pr_debug("kfd_ioctl_dbg_wave_control not supported on CZ\n"); + 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; } - cmd_from_user = (void __user *) args->content_ptr; +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; - /* Validate arguments */ + 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->buf_size_in_bytes > MAX_ALLOWED_AW_BUFF_SIZE) || - (args->buf_size_in_bytes <= sizeof(*args) + sizeof(int) * 2) || - (cmd_from_user == NULL)) + if ((args->start_addr & ~PAGE_MASK) || (args->size & ~PAGE_MASK)) + return -EINVAL; + if (!args->start_addr || !args->size) return -EINVAL; - /* this is the actual buffer to work with */ - args_buff = memdup_user(cmd_from_user, - args->buf_size_in_bytes - sizeof(*args)); - if (IS_ERR(args_buff)) - return PTR_ERR(args_buff); + r = svm_ioctl(p, args->op, args->start_addr, args->size, args->nattr, + args->attrs); - aw_info.process = p; + 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 - aw_info.num_watch_points = *((uint32_t *)(&args_buff[args_idx])); - args_idx += sizeof(aw_info.num_watch_points); +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; - aw_info.watch_mode = (enum HSA_DBG_WATCH_MODE *) &args_buff[args_idx]; - args_idx += sizeof(enum HSA_DBG_WATCH_MODE) * aw_info.num_watch_points; + memset(&process_priv, 0, sizeof(process_priv)); - /* - * set watch address base pointer to point on the array base - * within args_buff + 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. */ - aw_info.watch_address = (uint64_t *) &args_buff[args_idx]; + process_priv.xnack_mode = p->xnack_enabled ? 1 : 0; - /* skip over the addresses buffer */ - args_idx += sizeof(aw_info.watch_address) * aw_info.num_watch_points; + ret = copy_to_user(user_priv_data + *priv_offset, + &process_priv, sizeof(process_priv)); - if (args_idx >= args->buf_size_in_bytes - sizeof(*args)) { - kfree(args_buff); - return -EINVAL; + 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; } - watch_mask_value = (uint64_t) args_buff[args_idx]; + 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; - if (watch_mask_value > 0) { /* - * There is an array of masks. - * set watch mask base pointer to point on the array base - * within args_buff + * priv_data does not contain useful information for now and is reserved for + * future use, so we do not set its contents. */ - aw_info.watch_mask = (uint64_t *) &args_buff[args_idx]; + } - /* skip over the masks buffer */ - args_idx += sizeof(aw_info.watch_mask) * - aw_info.num_watch_points; - } else { - /* just the NULL mask, set to NULL and skip over it */ - aw_info.watch_mask = NULL; - args_idx += sizeof(aw_info.watch_mask); + 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; } - if (args_idx >= args->buf_size_in_bytes - sizeof(args)) { - kfree(args_buff); - return -EINVAL; + 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); - /* Currently HSA Event is not supported for DBG */ - aw_info.watch_event = NULL; +exit: + kvfree(device_buckets); + kvfree(device_priv); + return ret; +} - mutex_lock(kfd_get_dbgmgr_mutex()); +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; +} - status = kfd_dbgmgr_address_watch(dev->dbgmgr, &aw_info); +static int criu_get_prime_handle(struct kgd_mem *mem, + int flags, u32 *shared_fd, + struct file **file) +{ + struct dma_buf *dmabuf; + int ret; - mutex_unlock(kfd_get_dbgmgr_mutex()); + ret = amdgpu_amdkfd_gpuvm_export_dmabuf(mem, &dmabuf); + if (ret) { + pr_err("dmabuf export failed for the BO\n"); + return ret; + } - kfree(args_buff); + ret = get_unused_fd_flags(flags); + if (ret < 0) { + pr_err("dmabuf create fd failed, ret:%d\n", ret); + goto out_free_dmabuf; + } - return status; + *shared_fd = ret; + *file = dmabuf->file; + return 0; + +out_free_dmabuf: + dma_buf_put(dmabuf); + return ret; } -/* 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) +static void commit_files(struct file **files, + struct kfd_criu_bo_bucket *bo_buckets, + unsigned int count, + int err) +{ + while (count--) { + struct file *file = files[count]; + + if (!file) + continue; + if (err) { + fput(file); + put_unused_fd(bo_buckets[count].dmabuf_fd); + } else { + fd_install(bo_buckets[count].dmabuf_fd, file); + } + } +} + +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_ioctl_dbg_wave_control_args *args = data; - struct kfd_dev *dev; - struct dbg_wave_control_info wac_info; - unsigned char *args_buff; - uint32_t computed_buff_size; - long status; - void __user *cmd_from_user; - unsigned int args_idx = 0; + struct kfd_criu_bo_bucket *bo_buckets; + struct kfd_criu_bo_priv_data *bo_privs; + struct file **files = NULL; + 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; + } - memset((void *) &wac_info, 0, sizeof(struct dbg_wave_control_info)); + files = kvzalloc(num_bos * sizeof(struct file *), GFP_KERNEL); + if (!files) { + ret = -ENOMEM; + goto exit; + } - /* we use compact form, independent of the packing attribute value */ - computed_buff_size = sizeof(*args) + - sizeof(wac_info.mode) + - sizeof(wac_info.operand) + - sizeof(wac_info.dbgWave_msg.DbgWaveMsg) + - sizeof(wac_info.dbgWave_msg.MemoryVA) + - sizeof(wac_info.trapId); + 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; + + 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, &files[bo_index]); + if (ret) + goto exit; + } else { + bo_bucket->dmabuf_fd = KFD_INVALID_FD; + } - dev = kfd_device_by_id(args->gpu_id); - if (dev == NULL) + 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]->drm_priv, 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: + commit_files(files, bo_buckets, bo_index, ret); + kvfree(files); + 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); + + svm_range_get_info(p, &num_svm_ranges, &svm_priv_data_size); + + *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; - if (dev->device_info->asic_family == CHIP_CARRIZO) { - pr_debug("kfd_ioctl_dbg_wave_control not supported on CZ\n"); + 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); - /* input size must match the computed "compact" size */ - if (args->buf_size_in_bytes != computed_buff_size) { - pr_debug("size mismatch, computed : actual %u : %u\n", - args->buf_size_in_bytes, computed_buff_size); + 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; } - cmd_from_user = (void __user *) args->content_ptr; + 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; +} - if (cmd_from_user == NULL) +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; - /* copy the entire buffer from user */ + if (*priv_offset + (args->num_devices * sizeof(*device_privs)) > max_priv_data_size) + return -EINVAL; - args_buff = memdup_user(cmd_from_user, - args->buf_size_in_bytes - sizeof(*args)); - if (IS_ERR(args_buff)) - return PTR_ERR(args_buff); + device_buckets = kmalloc_array(args->num_devices, sizeof(*device_buckets), GFP_KERNEL); + if (!device_buckets) + return -ENOMEM; - /* move ptr to the start of the "pay-load" area */ - wac_info.process = p; + 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; + } - wac_info.operand = *((enum HSA_DBG_WAVEOP *)(&args_buff[args_idx])); - args_idx += sizeof(wac_info.operand); + for (i = 0; i < args->num_devices; i++) { + struct kfd_node *dev; + struct kfd_process_device *pdd; + struct file *drm_file; - wac_info.mode = *((enum HSA_DBG_WAVEMODE *)(&args_buff[args_idx])); - args_idx += sizeof(wac_info.mode); + /* device private data is not currently used */ - wac_info.trapId = *((uint32_t *)(&args_buff[args_idx])); - args_idx += sizeof(wac_info.trapId); + if (!device_buckets[i].user_gpu_id) { + pr_err("Invalid user gpu_id\n"); + ret = -EINVAL; + goto exit; + } - wac_info.dbgWave_msg.DbgWaveMsg.WaveMsgInfoGen2.Value = - *((uint32_t *)(&args_buff[args_idx])); - wac_info.dbgWave_msg.MemoryVA = NULL; + 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; + } - mutex_lock(kfd_get_dbgmgr_mutex()); + 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; + } - pr_debug("Calling dbg manager process %p, operand %u, mode %u, trapId %u, message %u\n", - wac_info.process, wac_info.operand, - wac_info.mode, wac_info.trapId, - wac_info.dbgWave_msg.DbgWaveMsg.WaveMsgInfoGen2.Value); + 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; + } - status = kfd_dbgmgr_wave_control(dev->dbgmgr, &wac_info); + if (!pdd->qpd.proc_doorbells) { + ret = kfd_alloc_process_doorbells(dev->kfd, pdd); + if (ret) + goto exit; + } + } - pr_debug("Returned status of dbg manager is %ld\n", status); + /* + * 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); - mutex_unlock(kfd_get_dbgmgr_mutex()); +exit: + kfree(device_buckets); + return ret; +} - kfree(args_buff); +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 || (PAGE_SIZE > 4096)) { + 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; + } - return status; + 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 */ + atomic64_add(bo_bucket->size, &pdd->vram_usage); + } + return 0; } -static int kfd_ioctl_get_clock_counters(struct file *filep, - struct kfd_process *p, void *data) +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 file **file) { - struct kfd_ioctl_get_clock_counters_args *args = data; - struct kfd_dev *dev; - struct timespec64 time; + struct kfd_process_device *pdd; + struct kgd_mem *kgd_mem; + int ret; + int j; - dev = kfd_device_by_id(args->gpu_id); - if (dev == NULL) - return -EINVAL; + 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); - /* Reading GPU clock counter from KGD */ - args->gpu_clock_counter = - dev->kfd2kgd->get_gpu_clock_counter(dev->kgd); + pdd = kfd_process_device_data_by_id(p, bo_bucket->gpu_id); + if (!pdd) { + pr_err("Failed to get pdd\n"); + return -ENODEV; + } - /* No access to rdtsc. Using raw monotonic time */ - getrawmonotonic64(&time); - args->cpu_clock_counter = (uint64_t)timespec64_to_ns(&time); + ret = criu_restore_memory_of_gpu(pdd, bo_bucket, bo_priv, &kgd_mem); + if (ret) + return ret; - get_monotonic_boottime64(&time); - args->system_clock_counter = (uint64_t)timespec64_to_ns(&time); + /* 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; - /* Since the counter is in nano-seconds we use 1GHz frequency */ - args->system_clock_freq = 1000000000; + 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, file); + 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; + struct file **files = NULL; + int ret = 0; + uint32_t i = 0; -static int kfd_ioctl_get_process_apertures(struct file *filp, - struct kfd_process *p, void *data) + 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; + + files = kvzalloc(args->num_bos * sizeof(struct file *), GFP_KERNEL); + if (!files) { + ret = -ENOMEM; + goto exit; + } + + 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], &files[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: + commit_files(files, bo_buckets, i, ret); + kvfree(files); + 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) { - struct kfd_ioctl_get_process_apertures_args *args = data; - struct kfd_process_device_apertures *pAperture; - struct kfd_process_device *pdd; + int ret = 0; + uint32_t i; - dev_dbg(kfd_device, "get apertures for PASID %d", p->pasid); + 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)); - args->num_of_nodes = 0; + 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->num_bos > 0 && !args->bos) || !args->devices || !args->priv_data || + !args->priv_data_size || !args->num_devices) + return -EINVAL; mutex_lock(&p->mutex); - /*if the process-device list isn't empty*/ - if (kfd_has_process_device_data(p)) { - /* Run over all pdd of the process */ - pdd = kfd_get_first_process_device_data(p); - do { - 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); - - args->num_of_nodes++; - } while ((pdd = kfd_get_next_process_device_data(p, pdd)) != NULL && - (args->num_of_nodes < NUM_OF_SUPPORTED_GPUS)); + /* + * 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 0; + return ret; } -static int kfd_ioctl_create_event(struct file *filp, struct kfd_process *p, - void *data) +static int criu_unpause(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args) { - struct kfd_ioctl_create_event_args *args = data; - int err; + int ret; - 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); + mutex_lock(&p->mutex); - return err; + 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 kfd_ioctl_destroy_event(struct file *filp, struct kfd_process *p, - void *data) +static int criu_resume(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args) { - struct kfd_ioctl_destroy_event_args *args = data; + struct kfd_process *target = NULL; + struct pid *pid = NULL; + int ret = 0; - return kfd_event_destroy(p, args->event_id); + 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 kfd_ioctl_set_event(struct file *filp, struct kfd_process *p, - void *data) +static int criu_process_info(struct file *filep, + struct kfd_process *p, + struct kfd_ioctl_criu_args *args) { - struct kfd_ioctl_set_event_args *args = data; + int ret = 0; - return kfd_set_event(p, args->event_id); + 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_reset_event(struct file *filp, struct kfd_process *p, - void *data) +static int kfd_ioctl_criu(struct file *filep, struct kfd_process *p, void *data) { - struct kfd_ioctl_reset_event_args *args = 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; + } - return kfd_reset_event(p, args->event_id); + if (ret) + dev_dbg(kfd_device, "CRIU operation:%d err:%d\n", args->op, ret); + + return ret; } -static int kfd_ioctl_wait_events(struct file *filp, struct kfd_process *p, - void *data) +static int runtime_enable(struct kfd_process *p, uint64_t r_debug, + bool enable_ttmp_setup) { - struct kfd_ioctl_wait_events_args *args = data; - enum kfd_event_wait_result wait_result; - int err; + int i = 0, ret = 0; - err = kfd_wait_on_events(p, args->num_events, - (void __user *)args->events_ptr, - (args->wait_for_all != 0), - args->timeout, &wait_result); + if (p->is_runtime_retry) + goto retry; - args->wait_result = wait_result; + if (p->runtime_info.runtime_state != DEBUG_RUNTIME_STATE_DISABLED) + return -EBUSY; - return err; + 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 = 0; + 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]; + int last_err = 0; + + 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) + last_err = debug_refresh_runlist(pdd->dev->dqm); + else + last_err = kfd_dbg_set_mes_debug_mode(pdd, + !kfd_dbg_has_cwsr_workaround(pdd->dev)); + + if (last_err) + ret = last_err; + } + } + + return ret; +} + +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; + target = NULL; + 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} + [_IOC_NR(ioctl)] = {.cmd = ioctl, .func = _func, .flags = _flags, \ + .cmd_drv = 0, .name = #ioctl} /** Ioctl table */ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = { @@ -888,17 +3163,82 @@ static const struct amdkfd_ioctl_desc amdkfd_ioctls[] = { AMDKFD_IOCTL_DEF(AMDKFD_IOC_WAIT_EVENTS, kfd_ioctl_wait_events, 0), - AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_REGISTER, + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_REGISTER_DEPRECATED, kfd_ioctl_dbg_register, 0), - AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_UNREGISTER, + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_UNREGISTER_DEPRECATED, kfd_ioctl_dbg_unregister, 0), - AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_ADDRESS_WATCH, + AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_ADDRESS_WATCH_DEPRECATED, kfd_ioctl_dbg_address_watch, 0), - AMDKFD_IOCTL_DEF(AMDKFD_IOC_DBG_WAVE_CONTROL, + 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) @@ -913,9 +3253,12 @@ static long kfd_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) char *kdata = NULL; unsigned int usize, asize; int retcode = -EINVAL; + bool ptrace_attached = false; - if (nr >= AMDKFD_CORE_IOCTL_COUNT) + if (nr >= AMDKFD_CORE_IOCTL_COUNT) { + retcode = -ENOTTY; goto err_i1; + } if ((nr >= AMDKFD_COMMAND_START) && (nr < AMDKFD_COMMAND_END)) { u32 amdkfd_size; @@ -928,14 +3271,29 @@ static long kfd_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) asize = amdkfd_size; cmd = ioctl->cmd; - } else + } else { + retcode = -ENOTTY; goto err_i1; + } - dev_dbg(kfd_device, "ioctl cmd 0x%x (#%d), arg 0x%lx\n", cmd, nr, arg); + dev_dbg(kfd_device, "ioctl cmd 0x%x (#0x%x), arg 0x%lx\n", cmd, nr, arg); - process = kfd_get_process(current); - if (IS_ERR(process)) { - dev_dbg(kfd_device, "no process\n"); + /* 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; } @@ -948,6 +3306,19 @@ static long kfd_ioctl(struct file *filep, unsigned int cmd, unsigned long arg) 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; @@ -986,27 +3357,79 @@ err_i1: kfree(kdata); if (retcode) - dev_dbg(kfd_device, "ret = %d\n", 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; + + if (PAGE_SIZE > 4096) + 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("process pid %d 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->lead_thread->pid, (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); - if ((vma->vm_pgoff & KFD_MMAP_DOORBELL_MASK) == - KFD_MMAP_DOORBELL_MASK) { - vma->vm_pgoff = vma->vm_pgoff ^ KFD_MMAP_DOORBELL_MASK; - return kfd_doorbell_mmap(process, vma); - } else if ((vma->vm_pgoff & KFD_MMAP_EVENTS_MASK) == - KFD_MMAP_EVENTS_MASK) { - vma->vm_pgoff = vma->vm_pgoff ^ KFD_MMAP_EVENTS_MASK; + 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; |