| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| |
| #include <linux/types.h> |
| #include <linux/mutex.h> |
| #include <linux/slab.h> |
| #include <linux/printk.h> |
| #include <linux/sched.h> |
| #include "kfd_kernel_queue.h" |
| #include "kfd_priv.h" |
| #include "kfd_device_queue_manager.h" |
| #include "kfd_pm4_headers.h" |
| #include "kfd_pm4_opcodes.h" |
| |
| #define PM4_COUNT_ZERO (((1 << 15) - 1) << 16) |
| |
| |
| |
| |
| static bool kq_initialize(struct kernel_queue *kq, struct kfd_dev *dev, |
| <------><------>enum kfd_queue_type type, unsigned int queue_size) |
| { |
| <------>struct queue_properties prop; |
| <------>int retval; |
| <------>union PM4_MES_TYPE_3_HEADER nop; |
| |
| <------>if (WARN_ON(type != KFD_QUEUE_TYPE_DIQ && type != KFD_QUEUE_TYPE_HIQ)) |
| <------><------>return false; |
| |
| <------>pr_debug("Initializing queue type %d size %d\n", KFD_QUEUE_TYPE_HIQ, |
| <------><------><------>queue_size); |
| |
| <------>memset(&prop, 0, sizeof(prop)); |
| <------>memset(&nop, 0, sizeof(nop)); |
| |
| <------>nop.opcode = IT_NOP; |
| <------>nop.type = PM4_TYPE_3; |
| <------>nop.u32all |= PM4_COUNT_ZERO; |
| |
| <------>kq->dev = dev; |
| <------>kq->nop_packet = nop.u32all; |
| <------>switch (type) { |
| <------>case KFD_QUEUE_TYPE_DIQ: |
| <------><------>kq->mqd_mgr = dev->dqm->mqd_mgrs[KFD_MQD_TYPE_DIQ]; |
| <------><------>break; |
| <------>case KFD_QUEUE_TYPE_HIQ: |
| <------><------>kq->mqd_mgr = dev->dqm->mqd_mgrs[KFD_MQD_TYPE_HIQ]; |
| <------><------>break; |
| <------>default: |
| <------><------>pr_err("Invalid queue type %d\n", type); |
| <------><------>return false; |
| <------>} |
| |
| <------>if (!kq->mqd_mgr) |
| <------><------>return false; |
| |
| <------>prop.doorbell_ptr = kfd_get_kernel_doorbell(dev, &prop.doorbell_off); |
| |
| <------>if (!prop.doorbell_ptr) { |
| <------><------>pr_err("Failed to initialize doorbell"); |
| <------><------>goto err_get_kernel_doorbell; |
| <------>} |
| |
| <------>retval = kfd_gtt_sa_allocate(dev, queue_size, &kq->pq); |
| <------>if (retval != 0) { |
| <------><------>pr_err("Failed to init pq queues size %d\n", queue_size); |
| <------><------>goto err_pq_allocate_vidmem; |
| <------>} |
| |
| <------>kq->pq_kernel_addr = kq->pq->cpu_ptr; |
| <------>kq->pq_gpu_addr = kq->pq->gpu_addr; |
| |
| <------> |
| <------>if (dev->device_info->asic_family > CHIP_MULLINS) { |
| <------><------>retval = kfd_gtt_sa_allocate(dev, PAGE_SIZE, &kq->eop_mem); |
| <------><------>if (retval != 0) |
| <------><------><------>goto err_eop_allocate_vidmem; |
| |
| <------><------>kq->eop_gpu_addr = kq->eop_mem->gpu_addr; |
| <------><------>kq->eop_kernel_addr = kq->eop_mem->cpu_ptr; |
| |
| <------><------>memset(kq->eop_kernel_addr, 0, PAGE_SIZE); |
| <------>} |
| |
| <------>retval = kfd_gtt_sa_allocate(dev, sizeof(*kq->rptr_kernel), |
| <------><------><------><------><------>&kq->rptr_mem); |
| |
| <------>if (retval != 0) |
| <------><------>goto err_rptr_allocate_vidmem; |
| |
| <------>kq->rptr_kernel = kq->rptr_mem->cpu_ptr; |
| <------>kq->rptr_gpu_addr = kq->rptr_mem->gpu_addr; |
| |
| <------>retval = kfd_gtt_sa_allocate(dev, dev->device_info->doorbell_size, |
| <------><------><------><------><------>&kq->wptr_mem); |
| |
| <------>if (retval != 0) |
| <------><------>goto err_wptr_allocate_vidmem; |
| |
| <------>kq->wptr_kernel = kq->wptr_mem->cpu_ptr; |
| <------>kq->wptr_gpu_addr = kq->wptr_mem->gpu_addr; |
| |
| <------>memset(kq->pq_kernel_addr, 0, queue_size); |
| <------>memset(kq->rptr_kernel, 0, sizeof(*kq->rptr_kernel)); |
| <------>memset(kq->wptr_kernel, 0, sizeof(*kq->wptr_kernel)); |
| |
| <------>prop.queue_size = queue_size; |
| <------>prop.is_interop = false; |
| <------>prop.is_gws = false; |
| <------>prop.priority = 1; |
| <------>prop.queue_percent = 100; |
| <------>prop.type = type; |
| <------>prop.vmid = 0; |
| <------>prop.queue_address = kq->pq_gpu_addr; |
| <------>prop.read_ptr = (uint32_t *) kq->rptr_gpu_addr; |
| <------>prop.write_ptr = (uint32_t *) kq->wptr_gpu_addr; |
| <------>prop.eop_ring_buffer_address = kq->eop_gpu_addr; |
| <------>prop.eop_ring_buffer_size = PAGE_SIZE; |
| <------>prop.cu_mask = NULL; |
| |
| <------>if (init_queue(&kq->queue, &prop) != 0) |
| <------><------>goto err_init_queue; |
| |
| <------>kq->queue->device = dev; |
| <------>kq->queue->process = kfd_get_process(current); |
| |
| <------>kq->queue->mqd_mem_obj = kq->mqd_mgr->allocate_mqd(kq->mqd_mgr->dev, |
| <------><------><------><------><------>&kq->queue->properties); |
| <------>if (!kq->queue->mqd_mem_obj) |
| <------><------>goto err_allocate_mqd; |
| <------>kq->mqd_mgr->init_mqd(kq->mqd_mgr, &kq->queue->mqd, |
| <------><------><------><------><------>kq->queue->mqd_mem_obj, |
| <------><------><------><------><------>&kq->queue->gart_mqd_addr, |
| <------><------><------><------><------>&kq->queue->properties); |
| <------> |
| <------>if (type == KFD_QUEUE_TYPE_HIQ) { |
| <------><------>pr_debug("Assigning hiq to hqd\n"); |
| <------><------>kq->queue->pipe = KFD_CIK_HIQ_PIPE; |
| <------><------>kq->queue->queue = KFD_CIK_HIQ_QUEUE; |
| <------><------>kq->mqd_mgr->load_mqd(kq->mqd_mgr, kq->queue->mqd, |
| <------><------><------><------>kq->queue->pipe, kq->queue->queue, |
| <------><------><------><------>&kq->queue->properties, NULL); |
| <------>} else { |
| <------><------> |
| |
| <------><------>retval = kfd_gtt_sa_allocate(dev, sizeof(uint32_t), |
| <------><------><------><------><------><------>&kq->fence_mem_obj); |
| |
| <------><------>if (retval != 0) |
| <------><------><------>goto err_alloc_fence; |
| |
| <------><------>kq->fence_kernel_address = kq->fence_mem_obj->cpu_ptr; |
| <------><------>kq->fence_gpu_addr = kq->fence_mem_obj->gpu_addr; |
| <------>} |
| |
| <------>print_queue(kq->queue); |
| |
| <------>return true; |
| err_alloc_fence: |
| <------>kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd, kq->queue->mqd_mem_obj); |
| err_allocate_mqd: |
| <------>uninit_queue(kq->queue); |
| err_init_queue: |
| <------>kfd_gtt_sa_free(dev, kq->wptr_mem); |
| err_wptr_allocate_vidmem: |
| <------>kfd_gtt_sa_free(dev, kq->rptr_mem); |
| err_rptr_allocate_vidmem: |
| <------>kfd_gtt_sa_free(dev, kq->eop_mem); |
| err_eop_allocate_vidmem: |
| <------>kfd_gtt_sa_free(dev, kq->pq); |
| err_pq_allocate_vidmem: |
| <------>kfd_release_kernel_doorbell(dev, prop.doorbell_ptr); |
| err_get_kernel_doorbell: |
| <------>return false; |
| |
| } |
| |
| |
| static void kq_uninitialize(struct kernel_queue *kq, bool hanging) |
| { |
| <------>if (kq->queue->properties.type == KFD_QUEUE_TYPE_HIQ && !hanging) |
| <------><------>kq->mqd_mgr->destroy_mqd(kq->mqd_mgr, |
| <------><------><------><------><------>kq->queue->mqd, |
| <------><------><------><------><------>KFD_PREEMPT_TYPE_WAVEFRONT_RESET, |
| <------><------><------><------><------>KFD_UNMAP_LATENCY_MS, |
| <------><------><------><------><------>kq->queue->pipe, |
| <------><------><------><------><------>kq->queue->queue); |
| <------>else if (kq->queue->properties.type == KFD_QUEUE_TYPE_DIQ) |
| <------><------>kfd_gtt_sa_free(kq->dev, kq->fence_mem_obj); |
| |
| <------>kq->mqd_mgr->free_mqd(kq->mqd_mgr, kq->queue->mqd, |
| <------><------><------><------>kq->queue->mqd_mem_obj); |
| |
| <------>kfd_gtt_sa_free(kq->dev, kq->rptr_mem); |
| <------>kfd_gtt_sa_free(kq->dev, kq->wptr_mem); |
| |
| <------> |
| <------> * is able to handle NULL properly. |
| <------> */ |
| <------>kfd_gtt_sa_free(kq->dev, kq->eop_mem); |
| |
| <------>kfd_gtt_sa_free(kq->dev, kq->pq); |
| <------>kfd_release_kernel_doorbell(kq->dev, |
| <------><------><------><------><------>kq->queue->properties.doorbell_ptr); |
| <------>uninit_queue(kq->queue); |
| } |
| |
| int kq_acquire_packet_buffer(struct kernel_queue *kq, |
| <------><------>size_t packet_size_in_dwords, unsigned int **buffer_ptr) |
| { |
| <------>size_t available_size; |
| <------>size_t queue_size_dwords; |
| <------>uint32_t wptr, rptr; |
| <------>uint64_t wptr64; |
| <------>unsigned int *queue_address; |
| |
| <------> |
| <------> * When rptr == wptr + 1, the buffer is full. |
| <------> * It is always rptr that advances to the position of wptr, rather than |
| <------> * the opposite. So we can only use up to queue_size_dwords - 1 dwords. |
| <------> */ |
| <------>rptr = *kq->rptr_kernel; |
| <------>wptr = kq->pending_wptr; |
| <------>wptr64 = kq->pending_wptr64; |
| <------>queue_address = (unsigned int *)kq->pq_kernel_addr; |
| <------>queue_size_dwords = kq->queue->properties.queue_size / 4; |
| |
| <------>pr_debug("rptr: %d\n", rptr); |
| <------>pr_debug("wptr: %d\n", wptr); |
| <------>pr_debug("queue_address 0x%p\n", queue_address); |
| |
| <------>available_size = (rptr + queue_size_dwords - 1 - wptr) % |
| <------><------><------><------><------><------><------>queue_size_dwords; |
| |
| <------>if (packet_size_in_dwords > available_size) { |
| <------><------> |
| <------><------> * make sure calling functions know |
| <------><------> * acquire_packet_buffer() failed |
| <------><------> */ |
| <------><------>goto err_no_space; |
| <------>} |
| |
| <------>if (wptr + packet_size_in_dwords >= queue_size_dwords) { |
| <------><------> |
| <------><------> * still enough space. |
| <------><------> */ |
| <------><------>if (packet_size_in_dwords >= rptr) |
| <------><------><------>goto err_no_space; |
| |
| <------><------> |
| <------><------>while (wptr > 0) { |
| <------><------><------>queue_address[wptr] = kq->nop_packet; |
| <------><------><------>wptr = (wptr + 1) % queue_size_dwords; |
| <------><------><------>wptr64++; |
| <------><------>} |
| <------>} |
| |
| <------>*buffer_ptr = &queue_address[wptr]; |
| <------>kq->pending_wptr = wptr + packet_size_in_dwords; |
| <------>kq->pending_wptr64 = wptr64 + packet_size_in_dwords; |
| |
| <------>return 0; |
| |
| err_no_space: |
| <------>*buffer_ptr = NULL; |
| <------>return -ENOMEM; |
| } |
| |
| void kq_submit_packet(struct kernel_queue *kq) |
| { |
| #ifdef DEBUG |
| <------>int i; |
| |
| <------>for (i = *kq->wptr_kernel; i < kq->pending_wptr; i++) { |
| <------><------>pr_debug("0x%2X ", kq->pq_kernel_addr[i]); |
| <------><------>if (i % 15 == 0) |
| <------><------><------>pr_debug("\n"); |
| <------>} |
| <------>pr_debug("\n"); |
| #endif |
| <------>if (kq->dev->device_info->doorbell_size == 8) { |
| <------><------>*kq->wptr64_kernel = kq->pending_wptr64; |
| <------><------>write_kernel_doorbell64(kq->queue->properties.doorbell_ptr, |
| <------><------><------><------><------>kq->pending_wptr64); |
| <------>} else { |
| <------><------>*kq->wptr_kernel = kq->pending_wptr; |
| <------><------>write_kernel_doorbell(kq->queue->properties.doorbell_ptr, |
| <------><------><------><------><------>kq->pending_wptr); |
| <------>} |
| } |
| |
| void kq_rollback_packet(struct kernel_queue *kq) |
| { |
| <------>if (kq->dev->device_info->doorbell_size == 8) { |
| <------><------>kq->pending_wptr64 = *kq->wptr64_kernel; |
| <------><------>kq->pending_wptr = *kq->wptr_kernel % |
| <------><------><------>(kq->queue->properties.queue_size / 4); |
| <------>} else { |
| <------><------>kq->pending_wptr = *kq->wptr_kernel; |
| <------>} |
| } |
| |
| struct kernel_queue *kernel_queue_init(struct kfd_dev *dev, |
| <------><------><------><------><------>enum kfd_queue_type type) |
| { |
| <------>struct kernel_queue *kq; |
| |
| <------>kq = kzalloc(sizeof(*kq), GFP_KERNEL); |
| <------>if (!kq) |
| <------><------>return NULL; |
| |
| <------>if (kq_initialize(kq, dev, type, KFD_KERNEL_QUEUE_SIZE)) |
| <------><------>return kq; |
| |
| <------>pr_err("Failed to init kernel queue\n"); |
| |
| <------>kfree(kq); |
| <------>return NULL; |
| } |
| |
| void kernel_queue_uninit(struct kernel_queue *kq, bool hanging) |
| { |
| <------>kq_uninitialize(kq, hanging); |
| <------>kfree(kq); |
| } |
| |
| |
| static __attribute__((unused)) void test_kq(struct kfd_dev *dev) |
| { |
| <------>struct kernel_queue *kq; |
| <------>uint32_t *buffer, i; |
| <------>int retval; |
| |
| <------>pr_err("Starting kernel queue test\n"); |
| |
| <------>kq = kernel_queue_init(dev, KFD_QUEUE_TYPE_HIQ); |
| <------>if (unlikely(!kq)) { |
| <------><------>pr_err(" Failed to initialize HIQ\n"); |
| <------><------>pr_err("Kernel queue test failed\n"); |
| <------><------>return; |
| <------>} |
| |
| <------>retval = kq_acquire_packet_buffer(kq, 5, &buffer); |
| <------>if (unlikely(retval != 0)) { |
| <------><------>pr_err(" Failed to acquire packet buffer\n"); |
| <------><------>pr_err("Kernel queue test failed\n"); |
| <------><------>return; |
| <------>} |
| <------>for (i = 0; i < 5; i++) |
| <------><------>buffer[i] = kq->nop_packet; |
| <------>kq_submit_packet(kq); |
| |
| <------>pr_err("Ending kernel queue test\n"); |
| } |
| |
| |
| |