bs3-locking-1.c@ 96407

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1	/* $Id: bs3-locking-1.c 96407 2022-08-22 17:43:14Z vboxsync $ */
2	/** @file
3	* BS3Kit - bs3-locking-1, 16-bit C code.
4	*/
5
6	/*
7	* Copyright (C) 2007-2022 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* The contents of this file may alternatively be used under the terms
26	* of the Common Development and Distribution License Version 1.0
27	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	* in the VirtualBox distribution, in which case the provisions of the
29	* CDDL are applicable instead of those of the GPL.
30	*
31	* You may elect to license modified versions of this file under the
32	* terms and conditions of either the GPL or the CDDL or both.
33	*
34	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	*/
36
37
38	/*********************************************************************************************************************************
39	* Header Files *
40	*********************************************************************************************************************************/
41	#include <bs3kit.h>
42	#include <iprt/asm-amd64-x86.h>
43
44	#include <VBox/VMMDevTesting.h>
45
46
47	/*********************************************************************************************************************************
48	* Global Variables *
49	*********************************************************************************************************************************/
50	static struct
51	{
52	const char * BS3_FAR pszName;
53	uint32_t cInnerLoops;
54	uint32_t uCtrlLo;
55	uint32_t uCtrlHi;
56	} g_aLockingTests[] =
57	{
58	#if 1
59	# if 1 /* no contention benchmark */
60	{
61	"None 0us/inf/0k",
62	_32K,
63	0,
64	0,
65	},
66	{
67	"RW None Exl 0us/inf/0k",
68	_32K,
69	0,
70	0 \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW,
71	},
72	# endif
73	{
74	"RW None Shr 0us/inf/0k",
75	_32K,
76	0,
77	0 \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_EMT_SHARED,
78	},
79	# if 1
80	{
81	"Contention 500us/250us/64k",
82	2000 + 16384,
83	500 \| (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
84	64 \| VMMDEV_TESTING_LOCKED_HI_ENABLED,
85	},
86	{
87	"Contention 100us/50us/8k",
88	10000 + 4096,
89	100 \| (UINT32_C(50) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
90	8 \| VMMDEV_TESTING_LOCKED_HI_ENABLED,
91	},
92	{
93	"Contention 10us/1us/0k",
94	16384 + 4096,
95	10 \| (UINT32_C(1) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
96	0 \| VMMDEV_TESTING_LOCKED_HI_ENABLED,
97	},
98	{
99	"Contention 500us/250us/64k poke",
100	2000 + 16384,
101	500 \| (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
102	64 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_POKE,
103	},
104	{
105	"Contention 100us/50us/1k poke",
106	10000 + 4096,
107	100 \| (UINT32_C(50) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
108	1 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_POKE,
109	},
110	{
111	"Contention 500us/250us/64k poke void",
112	2000 + 16384,
113	500 \| (UINT32_C(250) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
114	64 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_POKE \| VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
115	},
116	{
117	"Contention 50us/25us/8k poke void",
118	20000 + 4096,
119	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
120	1 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_POKE \| VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
121	},
122	# endif
123	# if 1
124	{
125	"RW Contention Exl/Exl 50us/25us/16k",
126	20000 + 4096,
127	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
128	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW
129	},
130	# endif
131	{
132	"RW Contention Shr/Exl 50us/25us/16k",
133	20000 + 4096,
134	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
135	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
136	},
137	# if 1
138	{
139	"RW Contention Exl/Exl 50us/25us/16k poke",
140	20000 + 4096,
141	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
142	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_POKE
143	},
144	# endif
145	{
146	"RW Contention Shr/Exl 50us/25us/16k poke",
147	20000 + 4096,
148	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
149	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
150	\| VMMDEV_TESTING_LOCKED_HI_POKE \| VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
151	},
152	# if 1
153	{
154	"RW Contention Exl/Exl 50us/25us/16k poke void",
155	20000 + 4096,
156	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
157	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_POKE
158	},
159	# endif
160	{
161	"RW Contention Shr/Exl 50us/25us/16k poke void",
162	20000 + 4096,
163	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
164	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED
165	\| VMMDEV_TESTING_LOCKED_HI_POKE \| VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
166	},
167	#endif
168
169	{
170	"RW Contention Exl/Shr 50us/25us/16k",
171	20000 + 4096,
172	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
173	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
174	},
175	{
176	"RW Contention Exl/Shr poke 250us/25us/16k",
177	10000 + 4096,
178	250 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
179	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
180	\| VMMDEV_TESTING_LOCKED_HI_POKE
181	},
182	{
183	"RW Contention Exl/Shr poke void 250us/25us/16k",
184	10000 + 4096,
185	250 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
186	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW \| VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
187	\| VMMDEV_TESTING_LOCKED_HI_POKE \| VMMDEV_TESTING_LOCKED_HI_BUSY_SUCCESS
188	},
189	{
190	"RW None Shr/Shr 50us/25us/16k",
191	20000 + 4096,
192	50 \| (UINT32_C(25) << VMMDEV_TESTING_LOCKED_LO_WAIT_SHIFT),
193	16 \| VMMDEV_TESTING_LOCKED_HI_ENABLED \| VMMDEV_TESTING_LOCKED_HI_TYPE_RW
194	\| VMMDEV_TESTING_LOCKED_HI_THREAD_SHARED \| VMMDEV_TESTING_LOCKED_HI_EMT_SHARED
195	},
196	};
197
198
199	BS3_DECL(void) Main_rm()
200	{
201	uint64_t const cNsPerTest = RT_NS_15SEC;
202	unsigned i;
203
204	Bs3InitAll_rm();
205	Bs3TestInit("bs3-locking-1");
206
207	/*
208	* Since this is a host-side test and we don't have raw-mode any more, we
209	* just stay in raw-mode when doing the test.
210	*/
211	for (i = 0; i < RT_ELEMENTS(g_aLockingTests); i++)
212	{
213	uint64_t const nsStart = Bs3TestNow();
214	uint64_t cNsElapsed = 0;
215	uint32_t cTotal = 0;
216	uint32_t j;
217
218	Bs3TestSub(g_aLockingTests[i].pszName);
219	ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_LO, g_aLockingTests[i].uCtrlLo);
220	ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_HI, g_aLockingTests[i].uCtrlHi);
221
222	for (j = 0; j < _2M && cTotal < _1G; j++)
223	{
224
225	/* The inner loop should avoid calling Bs3TestNow too often, while not overshooting the . */
226	unsigned iInner = (unsigned)g_aLockingTests[i].cInnerLoops;
227	cTotal += iInner;
228	while (iInner-- > 0)
229	ASMInU32(VMMDEV_TESTING_IOPORT_LOCKED_LO);
230
231	cNsElapsed = Bs3TestNow() - nsStart;
232	if (cNsElapsed >= cNsPerTest)
233	break;
234	}
235
236	/* Disable locking. */
237	ASMOutU32(VMMDEV_TESTING_IOPORT_LOCKED_HI, 0);
238
239	Bs3TestValue("Loops", cTotal, VMMDEV_TESTING_UNIT_OCCURRENCES);
240	Bs3TestValue("Elapsed", cNsElapsed, VMMDEV_TESTING_UNIT_NS);
241	Bs3TestValue("PerLoop", cNsElapsed / cTotal, VMMDEV_TESTING_UNIT_NS_PER_OCCURRENCE);
242	}
243
244	Bs3TestTerm();
245	}
246

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source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bs3-locking-1.c@ 96407

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