lsdc_benchmark.c

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