tests: Start port-i/o mocking framework

This will be used to mock the i/o needs of indvidiual programmer
drivers. For each programmer driver, a `struct io_mock` can be
registered to dispatch inb()/outb() and friends.

Change-Id: I8df02832deba80761b57435244a29d0d9b4e2649
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/52794
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>

1 files changed, 49 insertions, 0 deletions

diff --git a/tests/io_mock.h b/tests/io_mock.h
new file mode 100644
index 000000000..056e6bff1
--- /dev/null
+++ b/tests/io_mock.h
@@ -0,0 +1,49 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (c) 2021 Nico Huber <nico.h@gmx.de>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the author nor the names of its contributors
+ *    may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _IO_MOCK_H_
+#define _IO_MOCK_H_
+
+struct io_mock {
+	void *priv;
+
+	void (*outb)(void *priv, unsigned char value, unsigned short port);
+	unsigned char (*inb)(void *priv, unsigned short port);
+
+	void (*outw)(void *priv, unsigned short value, unsigned short port);
+	unsigned short (*inw)(void *priv, unsigned short port);
+
+	void (*outl)(void *priv, unsigned int value, unsigned short port);
+	unsigned int (*inl)(void *priv, unsigned short port);
+};
+
+void io_mock_register(const struct io_mock *io);
+
+#endif