134 lines · c
1// SPDX-License-Identifier: GPL-2.0+2/*3 * Copyright (C) 2023 Loongson Technology Corporation Limited4 */5 6#include <drm/drm_debugfs.h>7 8#include "lsdc_benchmark.h"9#include "lsdc_drv.h"10#include "lsdc_gem.h"11#include "lsdc_ttm.h"12 13typedef void (*lsdc_copy_proc_t)(struct lsdc_bo *src_bo,14 struct lsdc_bo *dst_bo,15 unsigned int size,16 int n);17 18static void lsdc_copy_gtt_to_vram_cpu(struct lsdc_bo *src_bo,19 struct lsdc_bo *dst_bo,20 unsigned int size,21 int n)22{23 lsdc_bo_kmap(src_bo);24 lsdc_bo_kmap(dst_bo);25 26 while (n--)27 memcpy_toio(dst_bo->kptr, src_bo->kptr, size);28 29 lsdc_bo_kunmap(src_bo);30 lsdc_bo_kunmap(dst_bo);31}32 33static void lsdc_copy_vram_to_gtt_cpu(struct lsdc_bo *src_bo,34 struct lsdc_bo *dst_bo,35 unsigned int size,36 int n)37{38 lsdc_bo_kmap(src_bo);39 lsdc_bo_kmap(dst_bo);40 41 while (n--)42 memcpy_fromio(dst_bo->kptr, src_bo->kptr, size);43 44 lsdc_bo_kunmap(src_bo);45 lsdc_bo_kunmap(dst_bo);46}47 48static void lsdc_copy_gtt_to_gtt_cpu(struct lsdc_bo *src_bo,49 struct lsdc_bo *dst_bo,50 unsigned int size,51 int n)52{53 lsdc_bo_kmap(src_bo);54 lsdc_bo_kmap(dst_bo);55 56 while (n--)57 memcpy(dst_bo->kptr, src_bo->kptr, size);58 59 lsdc_bo_kunmap(src_bo);60 lsdc_bo_kunmap(dst_bo);61}62 63static void lsdc_benchmark_copy(struct lsdc_device *ldev,64 unsigned int size,65 unsigned int n,66 u32 src_domain,67 u32 dst_domain,68 lsdc_copy_proc_t copy_proc,69 struct drm_printer *p)70{71 struct drm_device *ddev = &ldev->base;72 struct lsdc_bo *src_bo;73 struct lsdc_bo *dst_bo;74 unsigned long start_jiffies;75 unsigned long end_jiffies;76 unsigned int throughput;77 unsigned int time;78 79 src_bo = lsdc_bo_create_kernel_pinned(ddev, src_domain, size);80 dst_bo = lsdc_bo_create_kernel_pinned(ddev, dst_domain, size);81 82 start_jiffies = jiffies;83 84 copy_proc(src_bo, dst_bo, size, n);85 86 end_jiffies = jiffies;87 88 lsdc_bo_free_kernel_pinned(src_bo);89 lsdc_bo_free_kernel_pinned(dst_bo);90 91 time = jiffies_to_msecs(end_jiffies - start_jiffies);92 93 throughput = (n * (size >> 10)) / time;94 95 drm_printf(p,96 "Copy bo of %uKiB %u times from %s to %s in %ums: %uMB/s\n",97 size >> 10, n,98 lsdc_domain_to_str(src_domain),99 lsdc_domain_to_str(dst_domain),100 time, throughput);101}102 103int lsdc_show_benchmark_copy(struct lsdc_device *ldev, struct drm_printer *p)104{105 unsigned int buffer_size = 1920 * 1080 * 4;106 unsigned int iteration = 60;107 108 lsdc_benchmark_copy(ldev,109 buffer_size,110 iteration,111 LSDC_GEM_DOMAIN_GTT,112 LSDC_GEM_DOMAIN_GTT,113 lsdc_copy_gtt_to_gtt_cpu,114 p);115 116 lsdc_benchmark_copy(ldev,117 buffer_size,118 iteration,119 LSDC_GEM_DOMAIN_GTT,120 LSDC_GEM_DOMAIN_VRAM,121 lsdc_copy_gtt_to_vram_cpu,122 p);123 124 lsdc_benchmark_copy(ldev,125 buffer_size,126 iteration,127 LSDC_GEM_DOMAIN_VRAM,128 LSDC_GEM_DOMAIN_GTT,129 lsdc_copy_vram_to_gtt_cpu,130 p);131 132 return 0;133}134